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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Mar. 31, 2015	May 15, 2015	Sep. 30, 2014
Entity Information [Line Items]
Entity Registrant Name	Booz Allen Hamilton Holding Corp
Entity Central Index Key	0001443646
Document Type	10-K
Document Period End Date	Mar. 31, 2015
Amendment Flag	false
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,851,829,177
Common stock, Class A
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		147,236,512
Non-voting common stock, Class B
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		0
Restricted common stock, Class C
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		0
Special voting common stock, Class E
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		1,851,590

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Current assets:
Cash and cash equivalents	$ 207,217	$ 259,994
Accounts receivable, net of allowance	857,310	916,737
Deferred income taxes	14,539	29,687
Prepaid expenses and other current assets	84,142	49,559
Total current assets	1,163,208	1,255,977
Property and equipment, net of accumulated depreciation	111,367	129,427
Deferred income taxes	14,758	0
Intangible assets, net of accumulated amortization	219,382	220,887
Goodwill	1,304,231	1,273,789
Other long-term assets	64,547	60,738
Total assets	2,877,493	2,940,818
Current liabilities:
Current portion of long-term debt	57,063	73,688
Accounts payable and other accrued expenses	481,815	488,807
Accrued compensation and benefits	279,239	331,440
Other current liabilities	30,877	23,169
Total current liabilities	848,994	917,104
Long-term debt, net of current portion	1,569,272	1,585,231
Income tax reserve	58,444	57,406
Deferred income taxes	0	8,231
Other long-term liabilities	214,285	201,210
Total liabilities	2,690,995	2,769,182
Commitments and contingencies (Note 20)
Stockholders' equity:
Treasury stock, at cost	(72,293)	(10,153)
Additional paid-in capital	174,985	144,269
Retained earnings	104,457	42,688
Accumulated other comprehensive loss	(22,159)	(6,636)
Total stockholders' equity	186,498	171,636
Total liabilities and stockholders' equity	2,877,493	2,940,818
Common stock, Class A
Stockholders' equity:
Common stock	1,502	1,440
Non-voting common stock, Class B
Stockholders' equity:
Common stock	0	6
Restricted common stock, Class C
Stockholders' equity:
Common stock	0	9
Special voting common stock, Class E
Stockholders' equity:
Common stock	$ 6	$ 13

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2015	Mar. 31, 2014
Treasury stock, shares	2,999,393	609,625
Common stock, Class A
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	600,000,000	600,000,000
Common stock, shares issued	150,237,675	143,962,073
Common stock, shares outstanding	147,238,282	143,352,448
Non-voting common stock, Class B
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	16,000,000	16,000,000
Common stock, shares issued	0	582,080
Common stock, shares outstanding	0	582,080
Restricted common stock, Class C
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	5,000,000	5,000,000
Common stock, shares issued	0	935,871
Common stock, shares outstanding	0	935,871
Special voting common stock, Class E
Common stock, par value	$ 0.003	$ 0.003
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	1,851,589	4,424,814
Common stock, shares outstanding	1,851,589	4,424,814

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Revenue	$ 5,274,770	$ 5,478,693	$ 5,758,059
Operating costs and expenses:
Cost of revenue	2,593,849	2,716,113	2,871,240
Billable expenses	1,406,527	1,487,115	1,532,590
General and administrative expenses	752,912	742,527	833,986
Depreciation and amortization	62,660	72,327	74,009
Total operating costs and expenses	4,815,948	5,018,082	5,311,825
Operating income	458,822	460,611	446,234
Interest expense	(71,832)	(78,030)	(70,284)
Other, net	(1,072)	(1,794)	(7,639)
Income before income taxes	385,918	380,787	368,311
Income tax expense	153,349	148,599	149,253
Net income	$ 232,569	$ 232,188	$ 219,058
Earnings per common share (Note 3):
Basic (in dollars per share)	$ 1.58	$ 1.62	$ 1.56
Diluted (in dollars per share)	$ 1.52	$ 1.54	$ 1.45

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 43,363	$ 52,807	$ 65,284	$ 71,115	$ 46,895	$ 47,167	$ 67,813	$ 70,313	$ 232,569	$ 232,188	$ 219,058
Change in postretirement plan costs, net of tax									(15,523)	7,151	(5,072)
Comprehensive income									$ 217,046	$ 239,339	$ 213,986

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities
Net income	$ 232,569	$ 232,188	$ 219,058
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	62,660	72,327	74,009
Stock-based compensation expense	26,163	20,065	24,841
Deferred income taxes	(2,543)	(26,371)	(48,088)
Excess tax benefits from the exercise of stock options	(50,800)	(38,185)	(26,860)
Amortization of debt issuance costs and loss on extinguishment	11,582	11,682	17,224
Losses on dispositions and impairments	1,541	1,024	1,106
Gain on sales of businesses	0	0	(254)
Changes in assets and liabilities:
Accounts receivable	60,533	110,308	125,125
Income taxes receivable / payable	36,456	(1,903)	104,877
Prepaid expenses and other current assets	(1,591)	(5,923)	10,006
Other long-term assets	(8,240)	(4,773)	2,723
Accrued compensation and benefits	(44,329)	(72,881)	(26,832)
Accounts payable and other accrued expenses	(35,443)	39,178	(23,760)
Accrued interest	5,262	0	(3,563)
Income tax reserves	1,038	388	1,736
Other current liabilities	5,127	(1,090)	11,367
Other long-term liabilities	9,973	(3,316)	1,939
Net cash provided by operating activities	309,958	332,718	464,654
Cash flows from investing activities
Purchases of property and equipment	(36,041)	(20,905)	(33,113)
Cash paid for business acquisitions, net of cash acquired	(24,534)	3,563	(157,964)
Proceeds from sales of businesses	0	0	625
Escrow receipts	0	3,786	0
Net cash used in investing activities	(60,575)	(13,556)	(190,452)
Cash flows from financing activities
Net proceeds from issuance of common stock	5,020	5,078	6,373
Stock option exercises	6,099	14,620	14,977
Excess tax benefits from the exercise of stock options	50,800	38,185	26,860
Repurchases of common stock	(62,140)	(3,709)	(1,067)
Cash dividends paid	(215,094)	(345,802)	(1,122,457)
Dividend equivalents paid to option holders	(47,110)	(56,138)	(49,765)
Debt issuance costs	(8,610)	(6,223)	(29,607)
Repayment of debt	(279,563)	(355,563)	(993,250)
Proceeds from debt issuance	248,438	300,000	1,739,750
Net cash used in financing activities	(302,160)	(409,552)	(408,186)
Net decrease in cash and cash equivalents	(52,777)	(90,390)	(133,984)
Cash and cash equivalents-beginning of year	259,994	350,384	484,368
Cash and cash equivalents-end of year	207,217	259,994	350,384
Supplemental disclosures of cash flow information
Interest	50,074	61,050	58,847
Income taxes	$ 122,912	$ 178,411	$ 90,146

Consolidated Statements of Stockholders Equity Statement - USD ($) $ in Thousands	Total	Common Stock Common stock, Class A	Common Stock Non-voting common stock, Class B	Common Stock Restricted common stock, Class C	Common Stock Special voting common stock, Class E	Treasury Stock	Additional Paid-in Capital	(Accumulated Deficit) Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance (shares) at Mar. 31, 2012		128,726,324	2,487,125	1,533,020	10,140,067	(333,775)
Balance at Mar. 31, 2012	$ 1,185,185	$ 1,287	$ 25	$ 15	$ 30	$ (5,377)	$ 898,541	$ 299,379	$ (8,715)
Issuance of common stock, in shares		1,182,004
Issuance of common stock	6,373	$ 12					6,361
Stock options exercised, in shares		5,204,890			(2,661,545)
Stock options exercised	14,977	$ 52			$ (8)		14,933
Excess tax benefits from the exercise of stock options	26,860						26,860
Share exchange, in shares		1,344,226	(1,035,525)	(308,701)
Share exchange	0	$ 13	$ (10)	$ (3)
Repurchase of common stock, in shares						(72,068)
Repurchase of common stock	(1,067)					$ (1,067)
Recognition of liability related to future stock option exercises (Note 17)	(121,905)						(121,905)
Net income	219,058							219,058
Change in postretirement plan costs, net of tax	(5,072)								(5,072)
Comprehensive income	213,986
Dividends paid	(1,122,457)						(728,795)	(393,662)
Stock-based compensation expense	24,841						24,841
Balance (shares) at Mar. 31, 2013		136,457,444	1,451,600	1,224,319	7,478,522	(405,843)
Balance at Mar. 31, 2013	226,793	$ 1,364	$ 15	$ 12	$ 22	$ (6,444)	120,836	124,775	(13,787)
Issuance of common stock, in shares		1,047,160
Issuance of common stock	5,078	$ 10					5,068
Stock options exercised, in shares		5,299,501			(3,053,708)
Stock options exercised	14,620	$ 54			$ (9)		14,575
Excess tax benefits from the exercise of stock options	38,185						38,185
Share exchange, in shares		1,157,968	(869,520)	(288,448)
Share exchange	0	$ 12	$ (9)	$ (3)
Repurchase of common stock, in shares						(203,782)
Repurchase of common stock	(3,709)					$ (3,709)
Recognition of liability related to future stock option exercises (Note 17)	(22,933)						(22,933)
Net income	232,188							232,188
Change in postretirement plan costs, net of tax	7,151								7,151
Comprehensive income	239,339
Dividends paid	(345,802)						(31,527)	(314,275)
Stock-based compensation expense	20,065						20,065
Balance (shares) at Mar. 31, 2014		143,962,073	582,080	935,871	4,424,814	(609,625)
Balance at Mar. 31, 2014	171,636	$ 1,440	$ 6	$ 9	$ 13	$ (10,153)	144,269	42,688	(6,636)
Issuance of common stock, in shares		1,365,008
Issuance of common stock	5,020	$ 14					5,006
Stock options exercised, in shares		3,392,643			(2,573,225)
Stock options exercised	6,099	$ 33			$ (7)		6,073
Excess tax benefits from the exercise of stock options	50,800						50,800
Share exchange, in shares		1,517,951	(582,080)	(935,871)
Share exchange	0	$ 15	$ (6)	$ (9)
Repurchase of common stock, in shares						(2,389,768)
Repurchase of common stock	(62,140)					$ (62,140)
Recognition of liability related to future stock option exercises (Note 17)	(13,032)						(13,032)
Net income	232,569
Change in postretirement plan costs, net of tax	(15,523)								(15,523)
Comprehensive income	217,046
Dividends paid	(215,094)						(44,294)	(170,800)
Stock-based compensation expense	26,163						26,163
Balance (shares) at Mar. 31, 2015		150,237,675	0	0	1,851,589	(2,999,393)
Balance at Mar. 31, 2015	$ 186,498	$ 1,502	$ 0	$ 0	$ 6	$ (72,293)	$ 174,985	$ 104,457	$ (22,159)

Business Overview	12 Months Ended
Business Overview	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BUSINESS OVERVIEW	BUSINESS OVERVIEW Our Business Booz Allen Hamilton Holding Corporation, including its wholly owned subsidiaries, or Holding or the Company, is an affiliate of The Carlyle Group, or Carlyle, and was incorporated in Delaware in May 2008. The Company provides management consulting, technology, and engineering services to the U.S. government in the defense, intelligence, and civil markets. Additionally, the Company provides its management and technology consulting services to major corporations, institutions, not-for-profit organizations, and international clients. The Company reports operating results and financial data in one operating segment. The Company is headquartered in McLean, Virginia, with approximately 22,500 employees as of March 31, 2015.

Summary of Significant Accounting Policies	12 Months Ended
Summary of Significant Accounting Policies	Mar. 31, 2015
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, and have been prepared in accordance with accounting principles generally accepted in the United States, or U.S. GAAP. All intercompany balances and transactions have been eliminated in consolidation. The Company’s fiscal year ends on March 31 and unless otherwise noted, references to fiscal year or fiscal are for fiscal years ended March 31. The accompanying consolidated financial statements present the financial position of the Company as of March 31, 2015 and 2014 and the Company’s results of operations for fiscal 2015, fiscal 2014, and fiscal 2013. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. Areas of the financial statements where estimates may have the most significant effect include contractual and regulatory reserves, valuation and lives of tangible and intangible assets, contingent consideration related to business acquisitions, impairment of long-lived assets, accrued liabilities, revenue recognition, bonus and other incentive compensation, stock-based compensation, realization of deferred tax assets, provisions for income taxes, and postretirement obligations. Actual results experienced by the Company may differ materially from management's estimates. Revenue Recognition Substantially all of the Company’s revenue is derived from services and solutions provided to the U.S. government and its agencies, primarily by the Company’s consulting staff and, to a lesser extent, subcontractors. The Company generates its revenue from the following types of contractual arrangements: cost-reimbursable-plus-fee contracts, time-and-materials contracts, and fixed-price contracts. Revenue on cost-reimbursable-plus-fee contracts is recognized as services are performed, generally based on the allowable costs incurred during the period plus any recognizable earned fee. The Company considers fixed fees under cost-reimbursable-plus-fee contracts to be earned in proportion to the allowable costs incurred in performance of the contract. For cost-reimbursable-plus-fee contracts that include performance-based fee incentives, which are principally award fee arrangements, the Company recognizes income when such fees are probable and estimable. Estimates of the total fee to be earned are made based on contract provisions, prior experience with similar contracts or clients, and management’s evaluation of the performance on such contracts. Contract costs, including indirect expenses, are subject to audit by the Defense Contract Audit Agency, or DCAA, and, accordingly, are subject to possible cost disallowances. Executive compensation that we determine to be allowable for cost reimbursement based on management's estimates is recognized as revenue, net of reserves. Management's estimates in this regard are based on a number of factors that may change over time, including executive compensation survey data, our and other government contractors' experiences with the DCAA audit practices in our industry, and relevant decisions of courts and boards of contract appeals. Revenue earned under time-and-materials contracts is recognized as hours are worked based on contractually billable rates to the client. Costs on time-and-materials contracts are expensed as incurred. Revenue on fixed-price contracts is primarily recognized using the percentage of completion method based on actual costs incurred relative to total estimated costs for the contract. On some fixed-price contracts the Company may use an alternative input method to calculate the percent complete, such as labor hours or labor dollars. This method is used when a contract contains significant, up-front material purchases resulting in costs incurred that are not representative of the actual progress on the contract. In either method, these estimated costs are updated during the term of the contract, and may result in revision by the Company of recognized revenue and estimated costs in the period in which the changes in estimated costs are identified. Profits on fixed-price contracts result from the difference between incurred costs used to calculate the percentage of completion and revenue earned. Contract accounting requires significant judgment relative to assessing risks, estimating contract revenue and costs, and making assumptions for schedule and technical issues. Due to the size and nature of many of the Company’s contracts, developing total revenue and cost at completion estimates requires the use of significant judgment. Contract costs include direct labor and billable expenses, an allocation of allowable indirect costs, and warranty obligations. Billable expenses is comprised of subcontracting costs and other “out of pocket” costs that often include, but are not limited to, travel-related costs and telecommunications charges. The Company recognizes revenue and billable expenses from these transactions on a gross basis because it is the primary obligor on our contracts with customers. Assumptions regarding the length of time to complete the contract also include expected increases in wages and prices for materials. Estimates of total contract revenue and costs are monitored during the term of the contract and are subject to revision as the contract progresses. Anticipated losses on contracts are recognized in the period they are deemed probable and can be reasonably estimated. The Company’s contracts may include the delivery of a combination of one or more of the Company’s service offerings. In these situations, the Company determines whether such arrangements with multiple service offerings should be treated as separate units of accounting based on how the elements are bid or negotiated, whether the customer can accept separate elements of the arrangement, and the relationship between the pricing on the elements individually and combined. Cash and Cash Equivalents Cash and cash equivalents include cash on hand and highly liquid investments having an original maturity of three months or less. The Company’s cash equivalents consist primarily of institutional money market funds. The Company maintains its cash and cash equivalents in bank accounts that, at times, exceed the federally insured limits. The Company has not experienced any losses in such accounts. Valuation of Accounts Receivable The Company maintains allowances for doubtful accounts against certain billed receivables based upon the latest information regarding whether invoices are ultimately collectible. Assessing the collectability of customer receivables requires management judgment. The Company determines its allowance for doubtful accounts by specifically analyzing individual accounts receivable, historical bad debts, customer credit-worthiness, current economic conditions, and accounts receivable aging trends. Valuation reserves are periodically re-evaluated and adjusted as more information about the ultimate collectability of accounts receivable becomes available. Upon determination that a receivable is uncollectible, the receivable balance and any associated reserve are written off. Concentrations of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents and accounts receivable. The Company’s cash equivalents are generally invested in Prime or U.S. government money market funds, which minimizes the credit risk. The Company believes that credit risk, for accounts receivable is limited as the receivables are primarily with the U.S. government. Property and Equipment Property and equipment are recorded at cost, and the balances are presented net of accumulated depreciation. The cost of software purchased or internally developed is capitalized, as appropriate. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets. Furniture and equipment is depreciated over five to ten years, computer equipment is depreciated over four years, and software purchased or developed for internal use is depreciated over three to five years. Leasehold improvements are amortized over the shorter of the useful life of the asset or the lease term. Maintenance and repairs are charged to expense as incurred. Rent expense is recorded on a straight-line basis over the life of the respective lease. The difference between the cash payment and rent expense is recorded as deferred rent in either accounts payable and other accrued expenses or other long-term liabilities in the consolidated balance sheets, depending on when the amounts will be recognized. The Company receives incentives for tenant improvements on certain of its leases. The cash expended on such improvements is recorded as property and equipment and amortized over the life of the associated asset, or lease term, whichever is shorter. Incentives for tenant improvements are recorded as deferred rent in either accounts payable and other accrued expenses or other long-term liabilities in the consolidated balance sheets depending on when the amounts will be recognized. Then they are amortized on a straight line basis over the lease term. Business Combinations The accounting for the Company’s business combinations consists of allocating the purchase price to tangible and intangible assets acquired and liabilities assumed based on their fair values, with the excess recorded as goodwill. The Company has one year from the acquisition date to use additional information obtained to adjust the fair value of the acquired assets and liabilities which may result in changes to their recorded values with an offsetting adjustment to goodwill. During the fiscal year ended March 31, 2015, the Company entered into a contingent consideration arrangement in connection with a business acquisition which required a fair value measurement using inputs such as projected cash flows and volatility. See Note 18 to our consolidated financial statements for further information about the valuation of the contingent consideration liability and the inputs used in the fair value measurement. Intangible Assets Intangible assets primarily consist of the Company's trade name, customer relationships, and other amortizable intangible assets. Customer relationships are amortized on an accelerated basis over the expected life based on projected future cash flows of approximately seven to nine years. The Company's trade name is not amortized, but is tested on at least an annual basis as of January 1 and more frequently if interim indicators of impairment exist. The trade name is considered to be impaired if the carrying value exceeds its estimated fair value. The Company used the relief from royalty method to estimate the fair value. The fair value of the asset is the present value of the license fees avoided by owning the asset, or the royalty savings. During the fiscal years ended March 31, 2015, 2014, and 2013 the Company did not record any impairment of intangible assets. Goodwill The Company assesses goodwill for impairment on at least an annual basis on January 1 unless interim indicators of impairment exist. Goodwill is considered to be impaired when the net book value of a reporting unit exceeds its estimated fair value. The Company operates as a single operating segment and as a single reporting unit for the purpose of evaluating goodwill. As of January 1, 2015, the Company performed its annual impairment test of goodwill by comparing the fair value of the Company (primarily based on market capitalization) to the carrying value of equity, and concluded that the fair value of the reporting unit was greater than the carrying amount. During the fiscal years ended March 31, 2015, 2014, and 2013 the Company did not record any impairment of goodwill. Long-Lived Assets The Company reviews its long-lived assets, including property and equipment and intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amounts of the assets may not be fully recoverable. If the total of the expected undiscounted future net cash flows is less than the carrying amount of the asset, a loss is recognized for any excess of the carrying amount over the fair value of the asset. During the fiscal years ended March 31, 2015, 2014, and 2013 the Company did not record any impairment charges. Income Taxes The Company provides for income taxes as a “C” corporation on income earned from operations. The Company is subject to federal, state, and foreign taxation in various jurisdictions. Deferred tax assets and liabilities are recorded to recognize the expected future tax benefits or costs of events that have been, or will be, reported in different years for financial statement purposes than for tax purposes. Deferred tax assets and liabilities are computed based on the difference between the financial statement carrying amount and tax basis of assets and liabilities using enacted tax rates and laws for the years in which these items are expected to reverse. If management determines that some portion or all of a deferred tax asset is not “more likely than not” to be realized, a valuation allowance is recorded as a component of the income tax provision to reduce the deferred tax asset to an appropriate level in that period. In determining the need for a valuation allowance, management considers all positive and negative evidence, including historical earnings, projected future taxable income, future reversals of existing taxable temporary differences, taxable income in prior carryback periods, and prudent, feasible tax-planning strategies. The Company periodically assesses its tax positions for all periods open to examination by tax authorities based on the latest available information. Where it is not more likely that not that the Company’s tax position will be sustained, the Company records its best estimate of the resulting tax liability, penalties, and interest in the consolidated financial statements. These uncertain tax positions are recorded as a component of income tax expense. As uncertain tax positions in periods open to examination are closed out, or as new information becomes available, the resulting change is reflected in the recorded liability and income tax expense. Penalties and interest recognized related to the reserves for uncertain tax positions are recorded as a component of income tax expense. Comprehensive Income Comprehensive income is the change in equity of a business enterprise during a period from transactions and other events and circumstances from nonowner sources, and is presented in the consolidated statements of comprehensive income. Accumulated other comprehensive income (loss) as of March 31, 2015 and 2014 consisted of net unrealized losses on the Company’s defined and postretirement benefit plans. Share-Based Payments Share-based payments to employees are recognized in the consolidated statements of operations based on their grant date fair values with the expense recognized on an accelerated basis over the vesting period. The Company uses the Black-Scholes option-pricing model to determine the fair value of its awards at the time of the grant. Defined Benefit Plan and Other Postretirement Benefits The Company recognizes the underfunded status of defined benefit plans on the consolidated balance sheets. Gains and losses and prior service costs and credits that have not yet been recognized through net periodic benefit cost are recognized in accumulated other comprehensive income (loss), net of tax effects, and will be amortized as a component of net periodic cost in future periods. The measurement date, the date at which the benefit obligations are measured, is the Company’s fiscal year end. Self-Funded Medical Plans The Company maintains self-funded medical insurance. Self-funded plans include a health maintenance organization, high-deductible, and traditional choice. Further, self-funded plans also include prescription drug and dental benefits. The Company records an incurred but unreported claim liability in the accrued compensation and benefits line of the consolidated balance sheets for self-funded plans based on an actuarial valuation. Data that drives this estimate are primarily based on claims and enrollment data provided by a third party valuation firm for medical and pharmacy related costs. Deferred Compensation Plan The Company accounts for its deferred compensation plan in accordance with the terms of the underlying plan agreement. To the extent the terms of the contract attribute all or a portion of the expected future benefit to an individual year of the employee’s service, the cost of the benefits is recognized in that year. Therefore, the Company estimates the cost of future benefits that are expected to be paid and expenses the present value of those costs in the year as services are provided. As of March 31, 2015, there is no liability associated with the Company's deferred compensation plan. Fair Value Measurements Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In determining fair value, we consider the principal or most advantageous market in which the asset or liability would transact, and if necessary, consider assumptions that market participants would use when pricing the asset or liability. The accounting guidance for fair value measurements establishes a three level fair value hierarchy that prioritizes the inputs used in measuring fair value as follows: observable inputs such as quoted prices in active markets (Level 1); inputs other than quoted prices in active markets that are observable either directly or indirectly (Level 2); and unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions (Level 3). Assets and liabilities are classified in their entirety within the fair value hierarchy based on the lowest level input that is significant to the fair value measurement. See Note 18 for additional information on the Company’s fair value measurements. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued a new standard that will replace existing revenue recognition standards and significantly expand the disclosure requirements for revenue arrangements. In April 2015, the FASB proposed a one-year delay in the effective date of the standard to January 1, 2018, with an option that would permit companies to adopt the standard as early as the original effective date. Early adoption prior to the effective date is not permitted. A final decision on the effective date is expected in 2015. The new standard will be effective for the Company beginning on April 1, 2017 (i.e., beginning with the first quarter fiscal 2018 interim financial statements) or April 1, 2018 if the one-year delay is enacted. The new standard may be adopted retrospectively for all periods presented, or adopted using a modified retrospective approach. Under the retrospective approach, the fiscal 2017 and 2016 financial statements would be adjusted to reflect the effects of adopting the new standard in those periods. Under the modified retrospective approach, the new standard would only be adopted for the period beginning April 1, 2017 to new contracts and those contracts that are not yet complete at April 1, 2017, with a cumulative catch-up adjustment recorded to beginning retained earnings for existing contracts that still require performance. Management is still in the process of determining which transition method to utilize in order to adopt the new standard and still assessing what effect the adoption of this standard may have on the timing of our revenue recognition and our financial statements. Other recent accounting pronouncements issued by the FASB during fiscal 2015 and through the filing date did not and are not believed by management to have a material impact on the Company's present or historical consolidated financial statements.

Earnings Per Share

12 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

EARNINGS PER SHARE

The Company computes basic and diluted earnings per share amounts based on net income for the periods presented. The Company uses the weighted average number of common shares outstanding during the period to calculate basic earnings per share, or EPS. Diluted EPS adjusts the weighted average number of shares outstanding to include the dilutive effect of outstanding common stock options and other stock-based awards.

The Company currently has outstanding shares of Class A Common Stock and Class E Special Voting Common Stock. During fiscal 2015, the Company converted all issued and outstanding shares of Class B Non-Voting Common Stock and Class C Restricted Common Stock into shares of Class A Common Stock on a one-for-one basis. Class E Special Voting Common Stock shares are not included in the calculation of EPS as these shares represent voting rights only and are not entitled to participate in dividends or other distributions. Unvested Class A Restricted Common Stock holders are entitled to participate in non-forfeitable dividends or other distributions. These unvested shares participated in the Company's dividends declared and paid in each quarter of fiscal 2015, 2014, and 2013. As such, EPS is calculated using the two-class method whereby earnings are reduced by distributed earnings as well as any available undistributed earnings allocable to holders of unvested restricted shares. A reconciliation of the income used to compute basic and diluted EPS for the periods presented are as follows:



	Fiscal Year Ended March 31,
	2015		2014		2013
Earnings for basic computations (1)	$	229,093	$	229,082	$	209,994
Weighted-average Class A Common Stock outstanding	144,809,906		139,275,596		131,068,847
Weighted-average Class B Non-Voting Common Stock outstanding	222,129		1,019,051		2,080,050
Weighted-average Class C Restricted Common Stock outstanding	382,085		1,019,897		1,253,832
Total weighted-average common shares outstanding for basic computations	145,414,120		141,314,544		134,402,729
Earnings for diluted computations (1)	$	229,101	$	229,082	$	209,994
Dilutive stock options and restricted stock	4,961,411		7,366,530		10,451,995
Average number of common shares outstanding for diluted computations	150,375,531		148,681,074		144,854,724
Earnings per common share
Basic	$	1.58	$	1.62	$	1.56
Diluted	$	1.52	$	1.54	$	1.45

(1) During fiscal 2015, 2014, and 2013 approximately 2.2 million, 1.3 million, and 1.2 million shares of participating securities were paid dividends totaling $3.2 million, $3.1 million, and $9.1 million, respectively. For fiscal 2015 there were undistributed earnings of $256,000 and $248,000 allocated to the participating class of securities in basic and diluted earnings per share, respectively. The allocated undistributed earnings and the dividends paid comprise the difference between net income presented on the consolidated statements of operations for fiscal 2015 and earnings for basic and diluted computations, while only the dividends paid for fiscal 2014 and 2013 comprise the difference from net income presented on the consolidated statements of operations, as there were no undistributed earnings.

The EPS calculation for fiscal 2015, 2014, and 2013 excludes 306,000, 1,072,000, and 328,000 options as their impact was anti-dilutive.

Goodwill and Intangible Assets

12 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS

Goodwill

As of March 31, 2015 and 2014, goodwill was $1,304.2 million and $1,273.8 million, respectively. The increase in the carrying amount of goodwill is primarily attributable to the Company's business acquisitions. The Company performed an annual impairment test of goodwill as of January 1, 2015 and 2014, noting no impairment.

Intangible Assets

Intangible assets consisted of the following:



	As of March 31, 2015						As of March 31, 2014
	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Amortizable intangible assets
Customer relationships and other amortizable intangible assets	$	196,359	$	167,177	$	29,182	$	187,758	$	157,071	$	30,687
Total	$	196,359	$	167,177	$	29,182	$	187,758	$	157,071	$	30,687

Unamortizable intangible assets
Trade name	$	190,200	$	—	$	190,200	$	190,200	$	—	$	190,200
Total	$	386,559	$	167,177	$	219,382	$	377,958	$	157,071	$	220,887

Intangible assets are primarily amortized on an accelerated basis over periods ranging from 7 years to 9 years. The weighted-average remaining period of amortization for all customer relationships is 4.6 years.

The Company performed an annual impairment test of the trade name as of January 1, 2015 and 2014, noting no impairment.

Amortization expense for fiscal 2015, 2014, and 2013 was $10.7 million, $14.8 million, and $14.8 million, respectively. The following table summarizes the estimated annual amortization expense for future periods indicated below:



For the Fiscal Year Ended March 31,
2016	$	10,722
2017	9,330
2018	3,889
2019	2,677
2020	1,468
Thereafter	1,096
Total amortization expense	$	29,182

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Accounts Receivable, Net

12 Months Ended

Mar. 31, 2015

Receivables [Abstract]

ACCOUNTS RECEIVABLE, NET

Accounts receivable, net consisted of the following:



	March 31,
	2015			2014
Current
Accounts receivable–billed	$	318,464		$	395,509
Accounts receivable–unbilled	539,203			522,685
Allowance for doubtful accounts	(357		)	(1,457		)
Accounts receivable, net	857,310			916,737
Long-term
Unbilled receivables	18,496			22,877
Total accounts receivable, net	$	875,806		$	939,614

Unbilled amounts represent sales for which billings have not been presented to customers at year end. These amounts are usually billed and collected within one year. Long-term unbilled receivables not anticipated to be billed and collected within one year, which are primarily related to retainage, holdbacks, and long-term rate settlements to be billed at contract closeout, are included in other long-term assets as accounts receivable in the accompanying consolidated balance sheets. The Company recognized a provision (benefit) for doubtful accounts (including certain unbilled reserves) of $(1.0) million, $1.3 million, and $544,000 for fiscal 2015, 2014 and 2013, respectively. Because the Company's accounts receivable are primarily with U.S. Government and its agencies, the Company does not have material exposure to accounts receivable credit risk.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Property and Equipment, Net

12 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

PROPERTY AND EQUIPMENT, NET

The components of property and equipment, net were as follows:



	March 31,
	2015			2014
Furniture and equipment	$	134,378		$	104,463
Computer equipment	57,723			49,469
Software	43,881			25,380
Leasehold improvements	152,661			201,166
Total	388,643			380,478
Less: Accumulated depreciation and amortization	(277,276		)	(251,051		)
Property and equipment, net	$	111,367		$	129,427

Property and equipment, net, includes $4.9 million and $6.6 million of internally developed software, net of depreciation as of March 31, 2015 and 2014, respectively. Depreciation and amortization expense relating to property and equipment for fiscal 2015, 2014, and 2013 was $52.7 million, $57.6 million, and $59.5 million, respectively. During fiscal 2015 and 2014, the Company reduced the gross cost and accumulated depreciation and amortization by $16.3 million and $17.3 million, respectively, for zero net book value assets deemed no longer in service.

Accounts Payable and Other Accrued Expenses

12 Months Ended

Mar. 31, 2015

Payables and Accruals [Abstract]

ACCOUNTS PAYABLE AND OTHER ACCRUED EXPENSES

Accounts payable and other accrued expenses consisted of the following:



	March 31,
	2015		2014
Vendor payables	$	215,995	$	265,079
Accrued expenses	265,820		223,728
Total accounts payable and other accrued expenses	$	481,815	$	488,807

Accrued expenses consisted primarily of the Company’s reserve related to potential cost disallowance in conjunction with government audits. Refer to Note 20 for further discussion of this reserve.

Accrued Compensation and Benefits

12 Months Ended

Mar. 31, 2015

Accrued Compensation and Benefits [Abstract]

ACCRUED COMPENSATION AND BENEFITS

Accrued compensation and benefits consisted of the following:



	March 31,
	2015		2014
Bonus	$	82,237	$	75,423
Retirement	29,285		43,405
Vacation	115,657		117,626
Stock-based compensation liability (Note 17)	31,732		39,922
Deferred Compensation (1)	—		27,547
Other	20,328		27,517
Total accrued compensation and benefits	$	279,239	$	331,440

(1) The Company maintained a deferred compensation plan, or EPP, established in January 2009, for the benefit of certain employees. The EPP allowed eligible participants to defer all or a portion of their annual performance bonus, reduced by amounts withheld for the payment of taxes or other deductions required by law. The Company made no contributions to the EPP, but maintained participant accounts for deferred amounts and interest earned. The deferred balance was paid during the three months ended December 31, 2014. The EPP is no longer active as of March 31, 2015.

- Definition

The entire disclosure for compensation costs, including compensated absences accruals, compensated absences liability, deferred compensation arrangements and income statement compensation items. Deferred compensation arrangements may include a description of an arrangement with an individual employee, which is generally an employment contract between the entity and a selected officer or key employee containing a promise by the employer to pay certain amounts at designated future dates, usually including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period, the number of shares (units) issued during the period under such arrangements, and the carrying amount as of the balance sheet date of the related liability.

+ References + Details

Deferred Payment Obligation

12 Months Ended

Mar. 31, 2015

Other Liabilities Disclosure [Abstract]

DEFERRED PAYMENT OBLIGATION

Pursuant to an Agreement and Plan of Merger, or the Merger Agreement, dated as of May 15, 2008, and subsequently amended, The Carlyle Group indirectly acquired all of the issued and outstanding stock of the Company. In connection with this transaction, on July 31, 2008 the Company established a Deferred Payment Obligation, or DPO, of $158.0 million, payable 8.5 years after the Closing Date, less any settled claims. Pursuant to the Merger Agreement, $78.0 million of the $158.0 million DPO was required to be paid in full to the selling shareholders. On December 11, 2009, in connection with a recapitalization transaction, $100.4 million was paid to the selling shareholders, of which $78.0 million was the repayment of that portion of the DPO, with approximately $22.4 million representing accrued interest.

The remaining $80.0 million is available to indemnify the Company for certain pre-acquisition tax contingencies, related interest and penalties, and other matters pursuant to the Merger Agreement. Any amounts remaining after the settlement of claims will be paid out to the selling shareholders. As of March 31, 2015 and 2014, the Company has recorded $57.8 million and $56.8 million, respectively, for pre-acquisition uncertain tax positions, of which approximately $20.6 million and $19.6 million, respectively, may be indemnified under the remaining available DPO. During fiscal 2015, the Company accrued additional interest for certain pre-acquisition uncertain tax positions, thereby increasing the estimated amount to be indemnified under the remaining available DPO and decreasing the DPO amount to be paid to the selling shareholders. Offsetting this decrease in the DPO amount is interest accrued at a rate of 5% per six-month period on the unpaid DPO balance, net of any settled claims or payments, which was $80.0 million as of March 31, 2015 and 2014. Accordingly, the $60.7 million and $61.7 million DPO balance recorded as of March 31, 2015 and 2014, respectively, within other long-term liabilities, except the current portion of accrued interest expense which is recorded within short-term liabilities, represents the residual balance estimated to be paid to the selling shareholders based on consideration of contingent tax claims, accrued interest and other matters.

A reconciliation of the principal balance of the DPO to the amount recorded in the consolidated balance sheets for the periods presented are as follows:



	March 31,
	2015			2014
Deferred payment obligation	$	80,000		$	80,000
Indemnified pre-acquisition uncertain tax positions	(20,586		)	(19,556		)
Accrued interest	1,304			1,304
Amount recorded in the consolidated balance sheets	$	60,718		$	61,748

During fiscal 2015 and 2014 respectively, the Company paid $8.0 million in each year of accrued interest to the selling shareholders.

Debt

12 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

DEBT

Debt consisted of the following:



	March 31, 2015					March 31, 2014
	Interest Rate		Outstanding Balance			Interest Rate		Outstanding Balance
Term Loan A	2.68	%	$	796,024		2.65	%	$	660,317
Term Loan B	3.75	%	830,311			3.75	%	998,602
Total			1,626,335					1,658,919
Less: Current portion of long-term debt			(57,063		)			(73,688		)
Long-term debt, net of current portion			$	1,569,272				$	1,585,231

On May 7, 2014, the Company entered into the Second Amendment to the Credit Agreement, dated as of July 31, 2012 (as previously amended by the First Amendment to the Credit Agreement, dated as of August 16, 2013). Pursuant to the Second Amendment, the Company increased its borrowing under Term Loan A by approximately $168.4 million, the proceeds of which were used to pay outstanding principal on the Term Loan B. The rates for Term Loan A and Term Loan B, as amended, remain unchanged. The Second Amendment also extended the maturity date of Term Loan A and the revolving credit facility to May 31, 2019. The maturity date for Term Loan B remained unchanged at July 31, 2019. The Company also amended its existing debt covenants to provide for greater operational and financial flexibility.

As of March 31, 2015, the Credit Agreement, as amended, provided the Company with an $830.0 million Term Loan A and an $841.2 million Term Loan B, and a $500.0 million revolving credit facility, with a sublimit for letters of credit of $100.0 million. The outstanding obligations under the Credit Agreement, as amended, are secured by a security interest in substantially all of the assets of the Company, subject to certain exceptions set forth in the Credit Agreement, as amended, and related documentation.

In connection with the Second Amendment, the Company accelerated the amortization of ratable portions of the Debt Issuance Costs, or DIC, and Original Issue Discount, or OID, associated with the prior senior secured loan facilities of $1.2 million. These expenses are reflected in other expense, net in the consolidated statement of operations for fiscal 2015. Furthermore, the Company expensed third party debt issuance costs of $2.0 million that did not qualify for deferral, which are reflected in general and administrative costs in the consolidated statement of operations for fiscal 2015.

We occasionally borrow under our revolving credit facility in anticipation of cash demands. During the fiscal years ended March 31, 2015 and 2014, the Company's wholly-owned subsidiary Booz Allen Hamilton Inc. accessed a total of $80.0 million and $300.0 million, respectively, of its $500.0 million revolving credit facility. As of March 31, 2015 and 2014, no amounts were outstanding on the revolving credit facility.

The Credit Agreement, as amended, requires quarterly principal payments of 1.25% of the stated principal amount of Term Loan A, with annual incremental increases to 1.875%, 2.50%, 3.125%, and 13.0%, prior to Term Loan A's maturity date of May 31, 2019. As a result of paying approximately $168.4 million of Term Loan B principal in connection with the Second Amendment, no additional principal payments are required until the remaining balance is due on Term Loan B's maturity date of July 31, 2019. The revolving credit facility matures on May 31, 2019, at which time any outstanding principal balance is due in full.

The following table summarizes required future debt principal repayments:



	Payments Due By March 31,
	Total		2016		2017		2018		2019		2020		Thereafter
Term Loan A	$	798,875	$	57,063	$	77,813	$	98,562	$	349,637	$	215,800	$	—
Term Loan B	841,188		—		—		—		—		841,188		—
Total	$	1,640,063	$	57,063	$	77,813	$	98,562	$	349,637	$	1,056,988	$	—

The interest rate on borrowings under Term Loan A is LIBOR plus 2.50% spread. The spread ranges from 2.00% to 2.75% based on the Company's total leverage ratio. The interest rate on borrowings under Term Loan B is LIBOR plus 3.0% spread with a 0.75% floor. The spread ranges from 2.00% to 3.00% based upon either an ABR or LIBOR borrowing. The revolving credit facility margin and commitment fee are subject to the leveraged based pricing grid, as set forth in the Credit Agreement, as amended.

During fiscal 2015, interest payments of $21.0 million and $29.0 million were made for Term Loan A and Term Loan B, respectively. During fiscal 2014, interest payments of $19.0 million and $41.9 million were made for Term Loan A and Term Loan B, respectively.

The total outstanding debt balance is recorded in the accompanying consolidated balance sheets, net of unamortized discount of $13.7 million and $12.3 million as of March 31, 2015 and 2014, respectively. As of March 31, 2015 and 2014, the Company was in compliance with all of the Credit Agreement's debt covenants.

Deferred Financing Costs

12 Months Ended

Mar. 31, 2015

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

DEFERRED FINANCING COSTS

A reconciliation of the beginning and ending amount of Debt Issuance Costs, or DIC, for the periods presented are as follows:



	March 31,
	2015			2014
Beginning of year	$	25,670		$	31,820
Amortization	(5,334		)	(6,719		)
Accelerated amortization of DIC related to May 2014 Refinancing Transaction and August 2013 Repricing Transaction ¹	(1,131		)	(610		)
Additional DIC related to May 2014 Refinancing Transaction and August 2013 Repricing Transaction ²	2,035			1,179
End of year	$	21,240		$	25,670

¹ Included in "Amortization of debt issuance costs and loss on extinguishment" in the consolidated statement of cash flows.

²Included in "Debt issuance costs" in the consolidated statement of cash flows.

Costs incurred in connection with the May 7, 2014 Refinancing Transaction were $4.0 million, of which $2.0 million was recorded as other long-term assets and will be amortized and reflected in interest expense in the consolidated statements of operations over the term of the loans. Amortization of these costs will be accelerated to the extent that any prepayment is made on the Credit Agreement. The remaining amount of $2.0 million, which was not deferred, was recorded as general and administrative expenses in the consolidated statements of operations in fiscal 2015.

Costs incurred in connection with the August 16, 2013 Repricing Transaction were $2.8 million, of which $1.2 million was recorded as other long-term assets and will be amortized and reflected in interest expense in the consolidated statements of operations over the term of the loans. Amortization of these costs will be accelerated to the extent that any prepayment is made on the Credit Agreement. The remaining amount of $1.6 million, which was not deferred, was recorded as general and administrative expenses in the consolidated statements of operations in fiscal 2014.

Absent any prepayment accelerations of DIC or the effect of changes in interest rates, the following table summarizes the estimated annual amortization expense of DIC using the effective interest rate method, as a component of interest expense, for the future fiscal periods indicated below:



	DIC Amortization Expense
	Total		2016		2017		2018		2019		2020		Thereafter
Term Loan A	$	6,012	$	1,732	$	1,622	$	1,463	$	1,108	$	87	$	—
Term Loan B	7,501		1,611		1,678		1,752		1,830		630		—
Revolver	7,727		1,858		1,853		1,853		1,853		310		—
Total	$	21,240	$	5,201	$	5,153	$	5,068	$	4,791	$	1,027	$	—

Income Taxes Income Taxes

12 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

INCOME TAXES

The components of income tax expense were as follows:



	Fiscal Year Ended March 31,
	2015			2014			2013
Current
U.S. Federal	$	133,400		$	148,908		$	161,838
State and local	22,492			26,062			35,503
Total current	155,892			174,970			197,341
Deferred
U.S. Federal	(2,938		)	(22,540		)	(40,652		)
State and local	395			(3,831		)	(7,436		)
Total deferred	(2,543		)	(26,371		)	(48,088		)
Total	$	153,349		$	148,599		$	149,253

A reconciliation of the provision for income tax to the amount computed by applying the statutory federal income tax rate to income from continuing operations before income taxes for each of the three years ended March 31 is as follows:



	Fiscal Year Ended March 31,
	2015		2014			2013
Income tax expense computed at U.S. federal statutory rate (35%)	$	135,071	$	133,275		$	128,909
Increases (reductions) resulting from:
Changes in uncertain tax positions	1,038		1,838			1,477
State income taxes, net of the federal tax benefit	15,039		13,847			17,039
Meals and entertainment	1,513		1,135			1,365
Other	688		(1,496		)	463
Income tax expense from operations	$	153,349	$	148,599		$	149,253

Significant components of the Company’s net deferred income tax (liability) asset were as follows:



	March 31,
	2015			2014
Deferred income tax assets:
Accrued expenses	$	92,747		$	96,554
Accrued compensation	36,956			40,198
Stock-based compensation	25,537			34,532
Pension and postretirement insurance	44,030			31,776
Property and equipment	14,035			7,753
Net operating loss & Capital loss carryforwards	263			532
Deferred rent and tenant allowance	13,700			11,256
Other	7,777			6,974
Total gross deferred income tax assets	235,045			229,575
Less: Valuation allowance	—			—
Total net deferred income tax assets	235,045			229,575
Deferred income tax liabilities:
Accrued compensation-IRC Section 481(a)	(10,039		)	(20,086		)
Unbilled receivables	(104,017		)	(98,129		)
Intangible assets	(81,486		)	(80,054		)
Debt issuance costs	(4,395		)	(6,650		)
Other	(5,811		)	(3,200		)
Total deferred income tax liabilities	(205,748		)	(208,119		)
Net deferred income tax asset	$	29,297		$	21,456

Deferred tax balances arise from temporary differences between the carrying amount of assets and liabilities and their tax basis and are stated at the enacted tax rates in effect for the year in which the differences are expected to reverse. A valuation allowance is provided against deferred tax assets when it is more likely than not that some or all of the deferred tax asset will not be realized. In determining if the Company's deferred tax assets are realizable, management considers all positive and negative evidence, including the history of generating book earnings, future reversals of existing taxable temporary differences, projected future taxable income, as well as any tax planning strategies. The Company believes it is more likely than not that the results of future operations will generate sufficient taxable income to realize the net deferred tax assets.

As of March 31, 2015, the Company has a minimal amount of State net operating loss, or NOL, carryforwards. The State NOL carryforwards expire in 2028. The Company believes that it is more likely than not that the Company will generate sufficient taxable income to fully realize the tax benefit of the State NOL carryforwards.

Uncertain Tax Positions

The Company maintains reserves for uncertain tax positions related to income tax benefits recognized. These reserves involve considerable judgment and estimation and are evaluated by management based on the best information available including changes in tax laws and other information. As of March 31, 2015, 2014, and 2013 the Company has recorded $58.4 million, $57.4 million, and $57.0 million respectively, of reserves for uncertain tax positions which includes potential tax benefits of $55.2 million, $55.0 million, and $55.7 million respectively, that, if recognized, would impact the effective tax rate. Of the $58.4 million, $57.4 million, and $57.0 million of reserves for uncertain tax positions as of March 31, 2015, 2014, and 2013 respectively, approximately $20.6 million , $19.6 million, and $18.5 million respectively, may be indemnified under the remaining available DPO.

A reconciliation of the beginning and ending amount of potential tax benefits for the periods presented is as follows:



	March 31,
	2015			2014			2013
Beginning of year	$	54,966		$	55,679		$	54,895
Federal benefit from change in reserve	—			—			—
Increases in prior year position	27			364			1,074
Increases in current year position	203			—			—
Settlements with taxing authorities	(32		)	(1,074		)	(11		)
Lapse of statute of limitations	—			(3		)	(279		)
End of year	$	55,164		$	54,966		$	55,679

The Company recognized accrued interest and penalties of approximately $840,000, $1.1 million and $952,000 for fiscal 2015, 2014, and 2013, respectively, related to the reserves for uncertain tax positions in the income tax provision. Included in the total reserve for uncertain tax positions are accrued penalties and interest of approximately $3.3 million, $2.4 million and $1.3 million at March 31, 2015, 2014, and 2013 respectively.

The Company did not have any material settlements or lapse of statute of limitations during fiscal year 2015. The Company is subject to taxation in the United States and various state and foreign jurisdictions. As of March 31, 2015, the Company's tax years ended July 31, 2008 and forward are open and subject to examination by the tax authorities. The jurisdictions currently under examination are not considered to be material. It is reasonably possible that during

the next twelve months the Company’s liability for uncertain tax positions, mostly relating to prior period restructurings, may be reduced significantly (approximately $57.9 million including interest and penalties) primarily due to the lapse in statute limitations.

Employee Benefit Plans

12 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

EMPLOYEE BENEFIT PLANS

Defined Contribution Plan

The Company sponsors the Employees’ Capital Accumulation Plan, or ECAP, which is a qualified defined contribution plan that covers eligible U.S. and international employees. ECAP provides for distributions, subject to certain vesting provisions, to participants by reason of retirement, death, disability, or termination of employment. Effective April 1, 2014, the Company transitioned from a discretionary employer contribution to an annual matching contribution of up to 6% of eligible annual income as determined by the Internal Revenue Code for the ECAP. Total expense recognized under ECAP for fiscal 2015, 2014, and 2013 was $110.7 million, $165.6 million, and $237.1 million, respectively, and the Company-paid contributions were $124.8 million, $205.2 million, and $242.6 million, respectively.

Defined Benefit Plan and Other Postretirement Benefit Plans

The Company maintains and administers a postretirement medical plan and a defined benefit retirement plan for current, retired, and resigned officers.

The Company established a non-qualified defined benefit plan for all Officers in May 1995, or the Retired Officers' Bonus Plan, which pays a lump-sum amount of $10,000 per year of service as an Officer, provided the Officer meets retirement vesting requirements. The Company also provides a fixed annual allowance after retirement to cover financial counseling and other expenses. The Retired Officers' Bonus Plan is not salary related, but rather is based primarily on years of service.

In addition, the Company provides postretirement healthcare benefits to former Officers under a medical indemnity insurance plan, with premiums paid by the Company. This plan is referred to as the Officer Medical Plan.

The Company recognizes a liability for the defined benefit plans' underfunded status, measures the defined benefit plans' obligations that determine its funded status as of the end of the fiscal year, and recognizes as a component of accumulated other comprehensive income the changes in the defined benefit plans' funded status that are not recognized as components of net periodic benefit cost.

As of March 31, 2015, the Company adopted new mortality tables published by the Society of Actuaries, which reflects improved life expectancies and projected mortality improvements. The result was an increase to the benefit obligation of our defined benefit plans of $9.6 million. Our defined benefit plans' benefit obligation increased by an additional $8.9 million as a result of the decrease in the discount rate assumption by 50 basis points.

The components of net postretirement medical expense for the Officer Medical Plan were as follows:



	Fiscal Year Ended March 31,
	2015		2014		2013
Service cost	$	4,086	$	4,745	$	3,892
Interest cost	3,568		3,660		3,147
Net actuarial loss	582		2,728		1,537
Total postretirement medical expense	$	8,236	$	11,133	$	8,576

The weighted-average discount rate used to determine the year-end benefit obligations was as follows:



	Fiscal Year Ended March 31,
	2015		2014		2013
Officer Medical Plan	4.25	%	4.75	%	4.75	%
Retired Officers’ Bonus Plan	4.25	%	4.75	%	4.75	%

Assumed healthcare cost trend rates for the Officer Medical Plan at March 31, 2015 and 2014 were as follows:



Pre-65 initial rate	2015		2014
Healthcare cost trend rate assumed for next year	7.00	%	7.25	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00	%	5.00	%
Year that the rate reaches the ultimate trend rate	2023		2023



Post-65 initial rate	2015		2014
Healthcare cost trend rate assumed for next year	6.75	%	7.00	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00	%	5.00	%
Year that the rate reaches the ultimate trend rate	2023		2022

Assumed healthcare cost trend rates have a significant effect on the amounts reported for the healthcare plans. A one-percentage-point change in assumed healthcare cost trend rates calculated as of March 31, 2015 would have the following effects:



	1% Increase		1% Decrease
Effect on total of service and interest cost	$	1,497	$	(1,188	)
Effect on postretirement benefit obligation	19,964		(15,774		)

Total defined benefit plan expense, consisting of service, interest, and net actuarial gain associated with the Retired Officers' Bonus Plan was $686,000, $768,000, and $743,000 for fiscal 2015, 2014, and 2013, respectively. Benefits paid associated with the Retired Officers’ Bonus Plan were $1.3 million, $1.1 million, and $361,000 for fiscal 2015, 2014, and 2013, respectively. The end-of-period benefit obligation of $4.3 million and $4.7 million as of March 31, 2015 and 2014, respectively, is included in postretirement obligations within other long-term liabilities in the accompanying consolidated balance sheets.

Accumulated other comprehensive loss as of March 31, 2015 includes unrecognized gross actuarial loss of $25.6 million, reduced by taxes of $10.1 million, that has not yet been recognized in net periodic pension cost for the Retired Officers’ Bonus Plan and the Officer Medical Plan. Accumulated other comprehensive loss as of March 31, 2014, includes unrecognized net actuarial gain of $6.7 million, net of taxes of $4.4 million, that has not yet been recognized in net periodic pension cost for the Retired Officers’ Bonus Plan and the Officer Medical Plan.

The amounts in accumulated other comprehensive income expected to be recognized as components of net periodic cost in fiscal 2016 are $3.5 million of net actuarial (gain) loss, $0 of net prior service cost (credit), and $0 of net transition (asset) obligation.

The changes in the benefit obligation, plan assets, and funded status of the Officer Medical Plan were as follows:



	Fiscal Year Ended March 31,
	2015			2014			2013
Benefit obligation, beginning of the year	$	75,902		$	78,735		$	63,585
Service cost	4,086			4,745			3,892
Interest cost	3,568			3,660			3,147
Net actuarial (gain) loss	26,293			(9,436		)	9,891
Benefits paid	(2,532		)	(1,802		)	(1,780		)
Benefit obligation, end of the year	$	107,317		$	75,902		$	78,735



Changes in plan assets
Fair value of plan assets, beginning of the year	$	—		$	—		$	—
Employer contributions	2,532			1,802			1,780
Benefits paid	(2,532		)	(1,802		)	(1,780		)
Fair value of plan assets, end of the year	$	—		$	—		$	—

As of March 31, 2015 and 2014, the unfunded status of the Officer Medical Plan was $107.3 million and $75.9 million, respectively, which is included in other long-term liabilities in the accompanying consolidated balance sheets.

Funded Status for Defined Benefit Plans

Generally, annual contributions are made at such times and in amounts as required by law and may, from time to time, exceed minimum funding requirements. The Retired Officers’ Bonus Plan is an unfunded plan and contributions are made as benefits are paid. As of March 31, 2015 and 2014, there were no plan assets for the Retired Officers’ Bonus Plan and therefore, the accumulated liability of $4.3 million and $4.7 million, respectively, is unfunded. The liability will be distributed in a lump-sum payment as each Officer retires.

The expected future medical benefit payments and related contributions are as follows:




For the Fiscal Year Ending March 31,
2016	2,672
2017	3,030
2018	3,368
2019	4,027
2020	4,454
2021-2024	27,292

Accumulated Other Comprehensive Loss (Notes)

12 Months Ended

Mar. 31, 2015

Equity [Abstract]

ACCUMULATED OTHER COMPREHENSIVE LOSS

All amounts recorded in other comprehensive loss are related to the Company's post-retirement plan. The following table represents a rollforward of amounts recognized in accumulated other comprehensive loss, net of tax:



	March 31,
	2015			2014			2013
Beginning of year	$	(6,636	)	$	(13,787	)	$	(8,715	)
Other comprehensive income (loss) before reclassifications	(15,873		)	5,499			(5,996		)
Amounts reclassified from accumulated other comprehensive loss	350			1,652			924
Net current-period other comprehensive income (loss)	(15,523		)	7,151			(5,072		)
End of year	$	(22,159	)	$	(6,636	)	$	(13,787	)

The following table presents the reclassifications out of accumulated other comprehensive loss to net income:



	March 31,
	2015			2014			2013
Amortization of net actuarial loss included in net periodic benefit cost (See Note 13)
Total before tax	$	577		$	2,728		$	1,524
Tax benefit	(227		)	(1,076		)	(600		)
Net of tax	$	350		$	1,652		$	924

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Other Long-Term Liabilities

12 Months Ended

Mar. 31, 2015

Other Liabilities Disclosure [Abstract]

OTHER LONG-TERM LIABILITIES

Other long-term liabilities consisted of the following:



	March 31,
	2015		2014
Deferred rent	$	34,732	$	28,527
Stock-based compensation liability (Note 17)	—		25,966
Deferred payment obligation	59,414		60,444
Postretirement benefit obligation	111,624		80,527
Other (1)	8,515		5,746
Total other long-term liabilities	$	214,285	$	201,210

(1) Balance at March 31, 2015 includes a contingent earnout liability of $4.5 million related to business acquisitions. Refer to Note 18 for further discussion.

In fiscal 2015 and 2014, the Company recorded a stock-based compensation liability of $31.7 million and $65.9 million, respectively, including $31.7 million and $39.9 million, respectively, expected to be paid within one year, related to special dividends paid in July and December 2009, June and August 2012, November 2013, and February and August 2014. Rollover options vested and not yet exercised that would have had an exercise price below zero as a result of the dividend were reduced to one cent, with the remaining reduction to be paid in cash upon exercise of the options. Payments of the special dividends to the Company's Amended and Restated Equity Incentive Plan, or EIP, option holders is linked to vesting. Refer to Note 17 for further discussion of the special dividends.

Stockholders' Equity

12 Months Ended

Mar. 31, 2015

Equity [Abstract]

STOCKHOLDERS' EQUITY

STOCKHOLDERS’ EQUITY

Common Stock

Holders of Class A Common Stock, Class C Restricted Common Stock, and Class E Special Voting Common Stock are entitled to one vote for each share as a holder. The holders of the Voting Common Stock shall vote together as a single class. The holders of Class B Non-Voting Common Stock have no voting rights.

Class C Restricted Common Stock was restricted in that a holder’s shares vested as set forth in the Rollover Plan. Refer to Note 17 for further discussion of the Rollover Plan.

When shares of Class B Non-Voting Common Stock or Class C Restricted Common Stock are sold on the open market, they become Class A Common Stock shares. At the annual meeting of stockholders held on July 31, 2014, the stockholders approved a proposal to amend and restate the certificate of incorporation, which had the effect of converting all issued and outstanding shares of Class B Non-Voting Common Stock and Class C Restricted Common Stock into shares of Class A Common Stock on a one-for-one basis. The conversion was effected on August 13, 2014 when the Company filed its third amended and restated certificate of incorporation with the Secretary of State of the State of Delaware. As a result of the conversion, there were no shares of Class B Non-Voting Common Stock and Class C Restricted Common Stock outstanding at such time.

Class E Special Voting Common Stock represents the voting rights that accompany the Rollover Options. Rollover Options have a fixed vesting and exercise schedule to comply with IRS section 409A. Upon exercise, the option will convert to Class A Common Stock, and the corresponding Class E Special Voting Common Stock will be repurchased by the Company and retired. Refer to Note 17 for further discussion of the Rollover Options.

Each share of common stock, except for Class E Special Voting Common Stock, is entitled to participate equally in dividends, when and if declared by the Board of Directors from time to time, such dividends and other distributions in cash, stock, or property from the Company’s assets or funds become legally available for such purposes subject to any dividend preferences that may be attributable to preferred stock that may be authorized. The Company’s ability to pay dividends to stockholders is limited as a practical matter by restrictions in the credit agreements governing the Senior Credit Facilities.

The authorized and unissued Class A Common Stock shares are available for future issuance upon share option exercises, without additional stockholder approval.

Employee Stock Purchase Plan

In connection with the Company’s initial public offering in November 2010, the Company established a tax qualified Employee Stock Purchase Plan, or ESPP, which is designed to enable eligible employees to periodically purchase shares of the Company’s Class A Common Stock up to an aggregate of 10,000,000 shares at a five percent discount from the fair market value of the Company’s common stock. The ESPP provides for quarterly offering periods, the first of which commenced on April 1, 2011. For the year ended March 31, 2015, 213,825 Class A Common Stock shares were purchased by employees under the ESPP. As of the program's inception, 1,508,895 shares have been purchased by employees.

Share Repurchase Program

On December 12, 2011, the Board of Directors approved a $30.0 million share repurchase program, to be funded from cash on hand. A special committee of the Board of Directors was appointed to evaluate market conditions and other relevant factors and initiate repurchases under the program from time to time. On January 27, 2015, the Board of Directors approved an increase to the share repurchase authorization to $180.0 million. The share repurchase program may be suspended, modified or discontinued at any time at the Company’s discretion without prior notice. On November 5, 2014, the Company entered into an agreement with an affiliate of The Carlyle Group to repurchase 1,000,000 shares of our Class A common stock pursuant to the repurchase program. The shares were repurchased at a price of $25.10 per share as part of a private non-underwritten transaction. On February 2, 2015, the Company entered into a similar agreement with an affiliate of the Carlyle Group to repurchase an additional 1,000,000 shares of our Class A common stock pursuant to the repurchase program. The shares were repurchased from the Underwriter at a price of $28.36 per share. As of March 31, 2015, the Company has $126.5 million remaining under the repurchase program.

Dividends

The following table summarizes the cash distributions recognized in the consolidated statement of cash flows:



	Fiscal Year Ended March 31,
	2015		2014		2013
Recurring dividends (1)	$	67,846	$	57,063	$	48,736
Special dividends (2)	147,248		288,739		1,073,733
Dividend equivalents (3)	47,110		56,138		59,471
Total distributions	$	262,204	$	401,940	$	1,181,940

(1) Amounts represent recurring quarterly dividends that were declared and paid for during each quarter of fiscal 2015, fiscal 2014, and fiscal 2013.

(2) Amounts represent aggregate special dividends of $1.00 per share ($1.00 paid on August 29, 2014), $2.00 per share ($1.00 paid November 29, 2013 and $1.00 paid February 28, 2014) and $8.00 per share ($1.50 paid June 29, 2012 and $6.50 paid August 31, 2012) that were declared and paid for during fiscal 2015, fiscal 2014, and fiscal 2013, respectively.

(3) Dividend equivalents are distributions made to option holders equal to the special dividends declared and paid.

On May 21, 2015, the Company announced a regular quarterly cash dividend in the amount of $0.13 per share. The quarterly dividend is payable on June 30, 2015 to stockholders of record on June 10, 2015.

For each special dividend authorized and declared, the Board of Directors, acting as the Administrator of the Officers' Rollover Stock Plan and the Equity Incentive Plan (EIP), as amended, is required to make a determination under the respective plan's antidilution provision to adjust the outstanding options. Refer to Note 17 for further discussion of the special dividends.

The total payout of the dividend and the dividend equivalents have been presented as a financing activity within the consolidated statement of cash flows.

- Definition

The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.

+ References

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Reference 19: http://www.xbrl.org/2003/role/presentationRef
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+ Details

Stock-Based Compensation

12 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK-BASED COMPENSATION

The following table summarizes stock-based compensation expense recognized in the consolidated statements of operations:



	Fiscal Year Ended March 31,
	2015		2014		2013
Cost of revenue	$	8,652	$	5,672	$	7,061
General and administrative expenses	17,511		14,393		17,780
Total	$	26,163	$	20,065	$	24,841

The following table summarizes the total stock-based compensation expense recognized in the consolidated statements of operations by the following types of equity awards:



	Fiscal Year Ended March 31,
	2015		2014		2013
Equity Incentive Plan Options	$	4,897	$	7,257	$	13,148
Class A Restricted Common Stock	21,266		12,171		8,412
Rollover Options	—		578		2,970
Class C Restricted Stock	—		59		311
Total	$	26,163	$	20,065	$	24,841

As of March 31, 2015 and 2014, there was $27.9 million and $16.4 million of total unrecognized compensation cost related to unvested stock-based compensation agreements. The unrecognized compensation cost as of March 31, 2015 is expected to be fully amortized over the next four years. Absent the effect of accelerating stock compensation cost for any departures of employees who may continue to vest in their equity awards, the following tables summarize the unrecognized compensation cost, the weighted average period the cost is expected to be amortized, and the estimated annual compensation cost for the future periods indicated below (excludes any future awards):



	Unrecognized Compensation Cost				Weighted Average Remaining Period to be Recognized
	March 31, 2015		March 31, 2014		March 31, 2015	March 31, 2014
Equity Incentive Plan Options	$	4,475	$	8,249	2.83	3.10
Class A Restricted Common Stock	23,418		8,157		2.71	2.02
Total	$	27,893	$	16,406



	Total Unrecognized Compensation Cost
	Total		2016		2017		2018		2019
Equity Incentive Plan Options	$	4,475	$	2,639	$	1,233	$	480	$	123
Class A Restricted Common Stock	23,418		14,320		6,649		2,383		66
Total	$	27,893	$	16,959	$	7,882	$	2,863	$	189

Equity Incentive Plan

The Equity Incentive Plan, or EIP, was created in connection with the Merger Agreement for employees and directors of Holding. The Company created a pool of options, or EIP Options, to draw upon for future grants that would be governed by the EIP. All options under the EIP are exercisable, upon vesting, for shares of common stock of Holding.

Stock options are granted at the discretion of the Board of Directors or its Compensation Committee and expire ten years from the grant date. Options generally vest over a five-year period based upon required service and performance conditions. Starting on February 1, 2012, the Board of Directors or its Compensation Committee updated vesting conditions for stock options, whereby stock options only vest upon a required service condition. The Company calculates the pool of additional paid-in capital associated with excess tax benefits using the “simplified method.”

In addition to options, the Board of Directors also grants restricted stock awards to members of the Board as compensation for services rendered to the Company. These awards generally vest over one year.

During fiscal 2015, the Company issued two equity awards in the form of restricted stock to certain senior executives and newly hired officers of the Company. These awards will vest over a four-year period.

The aggregate grant date fair value of the EIP Options issued during fiscal 2015, 2014, and 2013, was $1.7 million, $4.9 million, and $4.2 million, respectively, and is being recorded as expense over the vesting period. The total fair value of EIP Options vested during fiscal 2015 and 2014 was $14.0 million and $17.5 million, respectively. The total intrinsic value of EIP options exercised during fiscal 2015 and 2014 was $15.0 million and $31.8 million, respectively. As of March 31, 2015 and 2014, there were 12,753,436 and 9,197,629 options, respectively, available for future grant under the EIP.

Adoption of Annual Incentive Plan

On October 1, 2010, the Board of Directors adopted a new compensation plan in connection with the initial public offering to more appropriately align the Company’s compensation programs with those of similarly situated companies. The amount of the annual incentive payment will be determined based on performance targets established by the Board of Directors and a portion of the bonus may be paid in the form of equity (including stock and other awards under the EIP). If the Board of Directors elects to make payments in equity, the value of the overall award will be increased by 20%, related to the portion paid in equity. Equity awards vest based on the passage of time, subject to the officer’s continued employment by the Company. The portion to be paid in the form of equity will be recognized in the accompanying consolidated statements of operations based on grant date fair value over the vesting period of three years. The portion to be paid in cash is accrued ratably during the fiscal year in which the employees provide service and paid out during the first quarter of the subsequent fiscal year.

Grants of Class A Restricted Common Stock and Restricted Stock Units

On May 2, 2014, the Board of Directors granted 896,060 shares of Class A Restricted Stock to certain senior executives. The aggregate value of this award was estimated at $21.0 million based on the stock price of $23.45 on the grant date. This award will vest over a four year period subject to the executives' continued employment with the Company.

On June 23, 2014, the Board of Directors granted 196,095 shares of Class A Restricted Stock to certain newly hired partners. The aggregate value was estimated at $4.2 million based on the stock price of $21.57 on the grant date. This award will vest over four years based upon required service and performance conditions.

On July 1, 2014 the Board of Directors granted 465,886 Restricted Stock Units in conjunction with the Annual Incentive Plan adopted on October 1, 2010, or Annual Incentive Plan. The amount of the annual incentive payment was determined based on performance targets established by the Compensation Committee and a portion of the incentive payment awarded under the Annual Incentive Plan was paid in the form of Restricted Stock Units. A Restricted Stock Unit represents a contingent right to receive one share of Class A Common Stock upon vesting. The Restricted Stock Units will vest based on the passage of time, subject to the participant’s continued employment with the Company. The aggregate value was estimated at $10.1 million based on the stock price of $21.57 on the grant date.

On July 1, 2014, the Board of Directors granted the Chief Executive Officer 23,282 shares of Class A Restricted Stock. The amount of the annual incentive payment was determined based on performance targets established by the Compensation Committee and a portion of the bonus awarded under the Annual Incentive Plan to the Chief Executive Officer was paid in the form of Class A Restricted Stock. The aggregate value of this award was estimated at $0.5 million based on the stock price of $21.57 on the grant date.

On August 8, 2014, the Board of Directors granted 26,915 shares of Class A Restricted Stock to certain members of the Board of Directors. The aggregate value of this award was estimated at $0.6 million based on the stock price of $21.18 on the grant date.

On September 2, 2014, the Board of Directors granted 7,238 shares of Class A Restricted Stock to a new member of the Board of Directors. The aggregate value was estimated at $0.2 million based on the stock price of $22.69 on the grant date.

On February 5, 2015, the Board of Directors granted 1,593 shares of Class A Restricted Stock to a member of the Board of Directors. The aggregate value of this award was estimated at $0.05 million based on the stock price of $29.17 on the grant date.

The total fair value of restricted stock shares vested during fiscal 2015 and 2014 was $15.0 million and $8.7 million, respectively.

Officers’ Rollover Stock Plan

The Rollover Plan was adopted as a mechanism to enable Company Officers to exchange a portion of their previous equity interests in the pre-acquisition Company for equity interests in the Company. Among the equity interests that were eligible for exchange were common stock and stock rights, both vested and unvested.

Unvested stock rights that would have vested in 2008 were exchanged for 2,028,270 shares of new Class C Restricted Stock issued by the Company at an estimated fair value of $10.00 on August 1, 2008. The aggregate grant date fair value of the Class C Restricted Stock issued of $20.3 million was recorded as expense over the vesting period. For the fiscal year ended March 31, 2014, 136,200 cumulative shares of Class C Restricted Stock vested. As of March 31, 2015 all shares of class C Restricted Stock were fully vested. At March 31, 2015 and 2014, 3,971,730 shares of Class C Restricted Stock were authorized but unissued under the Plan. Notwithstanding the foregoing, Class C Restricted Stock was intended to be issued only in connection with the exchange process described above.

In addition to the conversion of the stock rights that would have vested in 2008 to Class C Restricted Stock, Options were issued in exchange for old stock rights held by the U.S. government consulting partners of the pre-acquisition Company. The Rollover Options were granted based on the retirement eligibility of the Officer. For the purposes of these options, there were two categories of Officers - retirement eligible and non-retirement eligible. Those individuals who were considered retirement eligible also were given the opportunity to make a one-time election to be treated as non-retirement eligible. The determination of retirement eligibility was made as of a set point in time and could not be changed at a future date. The aggregate grant date fair value of the Rollover Options issued of $127.1 million was recorded as compensation expense over the vesting period. Rollover Options granted to retirement eligible Officers had different vesting and exercise schedules than those granted to non-retirement eligible Officers. The total grant date fair value of Rollover Options vested during fiscal 2014 was $16.2 million. The Rollover Options were fully vested as of March 31, 2015. Rollover Options granted to retirement-eligible Officers were fully exercised as of March 31, 2015. Rollover Options granted to non-retirement eligible Officers are scheduled to be fully exercised in fiscal 2016.

As permitted under the terms of the EIP and Rollover Plans, the Compensation Committee as Administrator of the Plans, authorized the withholding of taxes not to exceed the minimum statutory withholding amount, through the surrender of shares of Class A common stock issuable upon the exercise of Rollover Options and the vesting or accelerated vesting of Restricted Stock. For those holders who elected to participate, the trade dates were as listed in the table below. As a result of these transactions, the Company repurchased a total of 388,824 shares and recorded them as treasury shares at a cost of $8.6 million, detailed as follows:



Total Shares Withheld to Cover Taxes
Trade Date	Shares	Cost	Total
April 1, 2014	2,111	$22.32	$	47,118
May 21, 2014	3,266	$22.17	72,407
June 30, 2014	212,445	$21.24	4,512,332
September 12, 2014	159,179	$22.85	3,637,240
March 1, 2015	943	$29.76	28,064
March 31, 2015	10,880	$28.94	314,867
Total	388,824		$	8,612,028

Methodology

The Company uses the Black-Scholes option-pricing model to determine the estimated fair value for stock-based awards. The fair value of the Company’s stock is based on the closing price on the New York Stock Exchange.

During fiscal year 2015, the Company’s Board of Directors authorized and declared three regular quarterly cash dividends of $0.11 per share and one quarterly cash dividend of $0.13 per share. Therefore, an annualized dividend yield between 1.66% and 2.04% was used in the Black-Scholes option-pricing model for all grants issued during the fiscal year. The Company has excluded any special dividends from the annualized dividend yield because of their classification as special dividends and their non-recurring nature. The Company plans to continue paying recurring dividends in the near term and assessing its excess cash resources to determine the best way to utilize its excess cash flow in order to meet its objectives. One way the Company may utilize excess cash includes the payment of special dividends. The Company does not anticipate or forecast the payment of special dividends and therefore does not include special dividends in the annual dividend yield which the company uses to calculate the fair value of stock options, as the Company does not pay these special dividends on a regular basis.

Implied volatility is calculated as of each grant date based on our historical volatility along with an assessment of the historical volatility of a peer group of publicly traded companies. Other than the expected life of the option, volatility is the most sensitive input to our option grants. To be consistent with all other implied calculations, the same peer group used to calculate other implied metrics is also used to calculate implied volatility.

The risk-free interest rate is determined by reference to the U.S. Treasury yield curve rates with the remaining term equal to the expected life assumed at the date of grant. The average expected life is calculated based on the Company's historical experience with respect to its stock plan activity in combination with an estimate of when vested and unexercised option shares will be exercised. Forfeitures were estimated based on the Company’s historical analysis of Officer and Vice-President attrition levels and actual forfeiture rates by grant date.

The weighted average assumptions used in the Black-Scholes option-pricing model for stock option awards were as follows:



	For The Fiscal Year Ended March 31,
	2015	2014	2013
Dividend yield	1.9%	2.19%	2.07%
Expected volatility	30.42%	30.97%	33.12%
Risk-free interest rate	1.60%	1.36%	1.44%
Expected life (in years)	5.00	6.64	7.00
Weighted-average grant date fair value	$5.55	$4.59	$4.69

Special Dividends

The Board of Directors, acting as the Administrator of the Officers' Rollover Stock Plan and the Equity Incentive Plan (EIP), as amended have discretion in how to effect the required adjustment to keep option holders whole in the event of a distribution of dividends that trigger certain anti-dilution clauses within the respective plans. In the event the Board of Directors elects to grant option holders a cash payment equal to the amount of the special dividend, the Company accrues a stock-based compensation liability as the EIP options are scheduled to be vested. Rollover Options are fully vested, therefore the liability associated with these options is fully recorded on the consolidated balance sheet. The obligation will be settled on the options' mandatory exercise date for Rollover Options and on the later of the date the dividend is paid or vesting for the EIP options. The stock-based compensation liability includes all special dividends declared.

On October 29, 2013, the Board of Directors authorized and declared a special cash dividend of $1.00 per share. The dividend was paid on November 29, 2013 to stockholders of record on November 11, 2013. On January 31, 2014, the Board of Directors authorized and declared a special cash dividend of $1.00 per share. The dividend was paid on February 28, 2014 to stockholders of record on February 10, 2014. On July 30, 2014, the Board of Directors authorized and declared a special cash dividend of $1.00 per share. The dividend was paid on August 29, 2014 to stockholders of record on August 11, 2014. For each special dividend declared, the Board of Directors, acting as the Administrator of the Officers' Rollover Stock Plan and the EIP, made a determination to adjust outstanding Rollover and EIP options for the special dividend to prevent the dilution of the benefit or potential benefit of the options. The adjustment was in the form of a $1.00 dividend equivalent. Holders of the Rollover options will receive a cash payment equal to the amount of the special dividend on the exercise of the option during the options' mandatory exercise period. Holders of EIP options will receive a cash payment equal to the amount of the special dividend payable on the later of the date the dividend was paid or the vesting of the EIP option, whichever is later.

On June 30, 2014 vested EIP option holders received a payment of $4.4 million, related to the special dividends declared in fiscal years 2013 and 2014. On August 29, 2014 vested outstanding EIP option holders received a dividend equivalent payment of $4.5 million related to the special dividend declared in fiscal year 2015. On September 30, 2014, Rollover Options holders received a dividend equivalent payment of $37.8 million related to special dividends declared in fiscal years 2010, 2013, 2014, and 2015. On March 31, 2015, vested EIP option holders received a payment of $0.1 million, related to the special dividends declared in fiscal years 2013, 2014, and 2015.

Payment of the dividend equivalents were accounted for as modifications resulting in incremental benefit to the option holders resulting in additional compensation expense of $0.6 million. Total compensation expense recorded in conjunction with the payment of all dividend equivalent to holders of unvested EIP options for the fiscal year ended March 31, 2015 was $1.0 million. Future compensation cost related to payment of the dividend equivalents to holders of EIP options not yet recognized in the statement of operations is $0.5 million and is expected to be recognized over 2.25 years.

As of March 31, 2015 and 2014, the Company calculated a total recorded and unrecorded stock-based compensation liability of $35.8 million and $73.1 million, respectively, related to the special dividends paid in July and December 2009, June and August 2012, November 2013, and February and August 2014, as follows:



	March 31, 2015						March 31, 2014
	EIP Options		Rollover Options		Total		EIP Options		Rollover Options		Total
Current portion of liability¹	$	3,697	$	28,035	$	31,732	$	3,675	$	36,247	$	39,922
Long-term portion of liability²	—		—		—		—		25,966		25,966
	$	3,697	$	28,035	$	31,732	$	3,675	$	62,213	$	65,888

¹ Included in accrued compensation and benefits (Note 8).

²Included in other long-term liabilities.

As of March 31, 2015, $4.1 million related to EIP Options will be recorded as liabilities as the options vest over the next four years. As of March 31, 2014, there was an unrecorded liability of $7.2 million related to EIP options. There is no unrecorded liability related to Rollover options as of March 31, 2015 or 2014, as the Rollover options are fully vested.

The following table summarizes unvested restricted stock activity for the periods presented:



	Number of Shares	Weighted Average Grant Date Fair Value

Unvested Restricted Stock Awards
Unvested at March 31, 2014	1,296,013	17.06
Granted	1,617,069	22.62
Vested	693,228	17.34
Forfeited	1,839	21.57
Unvested at March 31, 2015	2,218,015	21.02

The following table summarizes stock option activity for the periods presented:



	Number of Options	Weighted Average Exercise Price
Officers’ Rollover Stock Plan Options
Retirement Eligible:
Options outstanding at March 31, 2014	728,550	$	0.01	*
Granted	—
Forfeited	—
Expired	—
Exercised	728,550	0.01		*
Options outstanding at March 31, 2015	—			*
Non-Retirement Eligible:
Options outstanding at March 31, 2014	3,696,103	$	0.01	*
Granted	—
Forfeited	—
Expired	—
Exercised	1,838,977	0.01		*
Options outstanding at March 31, 2015	1,857,126	$	0.01	*
Equity Incentive Plan Options
Options outstanding at March 31, 2014	7,050,965	$	9.39
Granted	306,262	23.38
Forfeited	246,710	13.38
Expired	—	—
Exercised	833,712	7.30
Options outstanding at March 31, 2015	6,276,805	$	10.19	**

* Amount reduced for $4.642 dividend issued December 11, 2009, $1.087 dividend issued July 27, 2009, $1.50 dividend issued May 29, 2012, and the $6.50 dividend issued July 30, 2012.

** Reflects exercise price adjustment of $6.36 per grant for the $6.50 dividend per share issued July 30, 2012.

The following table summarizes unvested stock options for the periods presented:



	Number of Options	Weighted Average Grant Date Fair Value
Equity Incentive Plan Options
Unvested at March 31, 2014	3,403,059	$	5.78
Granted	306,262	5.55
Vested	1,232,686	6.00
Forfeited	246,710	5.31
Unvested at March 31, 2015	2,229,925	$	5.68

The following table summarizes stock options outstanding at March 31, 2015:



Range of exercise prices	Stock Options Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Intrinsic Value		Stock Options Exercisable	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Intrinsic Value
				(In years)					(In years)
Officers’ Rollover Stock Plan
$0.01	1,857,126	$0.01	(1)	0.25	$53,727		1,857,126	$0.01	0.25	$53,727
Equity Incentive Plan
$4.28 - $29.38	6,276,805	$10.19	(2)	5.71	$	117,663	4,046,880	$7.81	4.91	$85,511

(1) Amount reduced for $ 4.642 dividend issued December 11, 2009, $1.087 dividend issued July 27, 2009, $1.50 dividend issued May 29, 2012 and the $6.50 dividend issued July 30, 2012.

(2) Reflects exercise price adjustment of $6.36 per grant for the $6.50 dividend per share issued July 30, 2012.

Fair Value Measurements

12 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS

The accounting guidance for fair value measurements establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: observable inputs such as quoted prices in active markets (Level 1); inputs other than quoted prices in active markets that are observable either directly or indirectly (Level 2); and unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions (Level 3).

A financial instrument's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The financial instruments measured at fair value in the accompanying consolidated balance sheets consist of the following:



	Recurring Fair Value Measurements as of March 31, 2015
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents:
Cash and cash equivalents	$	48,942	$	—	$	—	$	48,942
Money market funds (1)	—		158,275		—		158,275
Total cash and cash equivalents	$	48,942	$	158,275	$	—	$	207,217
Liabilities:
Contingent earnout liability (2)	—		—		4,500		4,500
Total liabilities	$	—	$	—	$	4,500	$	4,500



	Recurring Fair Value Measurements as of March 31, 2014
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents:
Cash and cash equivalents	$	37,886	$	—	$	—	$	37,886
Money market funds (1)	—		222,108		—		222,108
Total cash and cash equivalents	$	37,886	$	222,108	$	—	$	259,994

(1) Level 2 cash and cash equivalents are invested in money market funds that are intended to maintain a stable net asset value of $1.00 per share by investing in liquid, high quality U.S. dollar-denominated money market instruments. Therefore, the fair value approximates the carrying value. Depending on our short-term liquidity needs, we make regular transfers between money market funds and other cash equivalents.

(2) On October 9, 2014, the Company entered into a contingent consideration arrangement in connection with a business acquisition. Under the arrangement, the Company agreed to pay up to a maximum of $9 million in cash to the seller if certain financial performance thresholds are achieved in calendar years 2016 and 2017. The fair value of the contingent consideration liability as of March 31, 2015 was $4.5 million and is a Level 3 fair value measurement recorded within other long-term liabilities. It was valued using a Monte Carlo simulation and the key input besides projected cash flows was volatility, estimated as 30% based on the asset volatility of comparable publicly-traded companies. An increase (decrease) in volatility in isolation would result in a lower (higher) fair value measurement. After the initial recording of this liability as a part of the purchase accounting, there were no subsequent changes in fair value recorded during the six months ended March 31, 2015. Any future changes in the fair value of this contingent consideration liability will be recognized in earnings during the applicable period.

The fair value of the Company's debt instruments approximates its carrying value at March 31, 2015 and March 31, 2014. The fair value of debt is determined based on interest rates available for debt with terms and maturities similar to the Company's existing debt arrangements (Level 2 inputs).

The following table presents a summary of changes in the fair value of the Company's contingent earnout liability categorized as Level 3 for the fiscal year ended March 31, 2015:



	Contingent Earnout Liability
Balance at March 31, 2014	$	—
Issuances	4,500
Balance at March 31, 2015	$	4,500

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Related-Party Transactions	12 Months Ended
Related-Party Transactions	Mar. 31, 2015
Related Party Transactions [Abstract]
RELATED-PARTY TRANSACTIONS	RELATED-PARTY TRANSACTIONS The Carlyle Group is the largest shareholder of the Company. On November 5, 2014, the Company entered into an agreement with an affiliate of The Carlyle Group to repurchase 1,000,000 shares of our Class A common stock pursuant to the repurchase program described in Note 16 above. The shares were repurchased at a price of $25.10 per share as part of a private non-underwritten transaction. On February 2, 2015, the Company entered into an underwriting agreement with an affiliate of the Carlyle Group, or the selling stockholder, and Morgan Stanley & Co. LLC, or the underwriter, pursuant to which (i) the selling stockholder sold 12,000,000 shares of our Class A Common Stock to the underwriter and (ii) the Company repurchased 1,000,000 shares of our Class A common stock from the underwriter. The shares were repurchased at a price of $28.36 per share from the underwriter. From time to time, and in the ordinary course of business: (1) other Carlyle portfolio companies engage the Company as a subcontractor or service provider, and (2) the Company engages other Carlyle portfolio companies as subcontractors or service providers. Revenue and cost associated with these related parties for fiscal 2015 were $1.1 million and $857,000, respectively. Revenue and cost associated with these related parties for fiscal 2014 were $444,000 and $368,000, respectively. Revenue and cost associated with these related party transactions for fiscal 2013 were $739,000 and $657,000, respectively. In addition, investment vehicles affiliated with The Carlyle Group participated in a lender syndicate in the Company’s outstanding debt in the amounts of $47.0 million and $55.5 million at March 31, 2015 and 2014, respectively. The participation by such investment vehicles in the syndication of the Company's debt during fiscal 2015 and 2014 was done on an arm’s length basis. On July 31, 2008, the Company entered into a management agreement, or Management Agreement, with TC Group V US, L.L.C., or TC Group, a company affiliated with Carlyle. In accordance with the Management Agreement, TC Group provides the Company with advisory, consulting and other services and the Company pays TC Group an aggregate annual fee of $1.0 million plus expenses. In addition, the Company made a one-time payment to TC Group of $20.0 million for investment banking, financial advisory, and other services provided to the Company in connection with the acquisition of Booz Allen Hamilton, Inc. in 2008 by The Carlyle Group. For fiscal 2015, 2014, and 2013, the Company incurred $1.0 million per year in advisory fees.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References + Details

Commitments and Contingencies

12 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

Leases

The Company leases office space under noncancelable operating leases that expire at various dates through 2026. The terms for the facility leases generally provide for rental payments on a graduated scale, which are recognized on a straight-line basis over the terms of the leases, including reasonably assured renewal periods, from the time the Company controls the leased property. Lease incentives are recorded as a deferred credit and recognized as a reduction to rent expense on a straight-line basis over the lease term. Rent expense was approximately $92.9 million, net of $696,000 of sublease income, $103.5 million, net of $2.5 million of sublease income, and $105.9 million, net of $5.5 million of sublease income, for fiscal 2015, 2014, and 2013, respectively.

Future minimum operating lease payments for noncancelable operating leases and future minimum income for noncancelable sublease rentals are summarized as follows:



For the Fiscal Year Ending March 31,	Operating Lease Payments		Operating Sublease Income
2016	$	70,158	$	198
2017	43,014		47
2018	31,608		17
2019	26,305		10
2020	22,172		4
Thereafter	48,464		—
	$	241,721	$	276

Rent expense is included in occupancy costs, a component of general and administrative expenses, as shown on the consolidated statements of operations, and includes rent, sublease income from third parties, real estate taxes, utilities, parking, security, repairs and maintenance, and storage costs.

As a result of the July 2008 acquisition, the Company assigned a total of nine leases to Booz & Co, which has subsequently changed its name to Strategy&. The Company remains liable for two leases for facilities located in Chicago and London under the terms of the original leases should Strategy& default on its obligations. All other leases assigned to Strategy& have expired. There were no events of default under these leases as of March 31, 2015 or 2014, and the maximum potential amount of undiscounted future payments is $9.3 million. The Chicago lease expires in November 2015 and the London lease expires in March 2017. Based on the Company’s assessment of the likelihood of future payment, no amounts have been recorded related to the Company’s contingent liability on such leases.

Letters of Credit and Third-Party Guarantees

As of March 31, 2015 and 2014, the Company was contingently liable under open standby letters of credit and bank guarantees issued by our banks in favor of third parties that totaled $5.3 million and $2.4 million, respectively. These letters of credit and bank guarantees primarily support insurance and bid and performance obligations. At March 31, 2015 and 2014, approximately $5.2 million and $2.4 million of these instruments reduce the available borrowings under the revolving credit facility. The remainder are guaranteed under a separate $5.0 million facility established in fiscal 2015, $4.9 million of which was available to the Company at March 31, 2015.

Government Contracting Matters

For fiscal 2015, 2014, and 2013, approximately 98%, 98%, and 99%, respectively, of the Company’s revenue was generated from contracts where the end client was an agency or department of the U.S. government, including contracts where Booz Allen performed in either a prime or subcontract position, and regardless of the geographic location in which the work was performed. Contracts with the U.S. government are subject to extensive legal and regulatory requirements and, from time to time and in the ordinary course of business, agencies of the U.S. government investigate whether the Company’s operations are conducted in accordance with these requirements and the terms of the relevant contracts by using investigative techniques such as subpoenas or civil investigative demands. U.S. government investigations of the Company, whether related to the Company’s U.S. government contracts or conducted for other reasons, could result in administrative, civil, or criminal liabilities, including repayments, fines, or penalties being imposed upon the Company, or could lead to suspension or debarment from future U.S. government contracting. Management believes it has adequately reserved for any losses that may be experienced from any investigation of which it is aware. The Defense Contract Management Agency Administrative Contracting Officer has negotiated annual final indirect cost rates through fiscal year 2007. Audits of subsequent years may result in cost reductions and/or penalties. Management believes it has adequately reserved for any losses that may be experienced from any such reductions and/or penalties. As of March 31, 2015 and 2014, the Company has recorded a liability of approximately $205.3 million and $189.8 million, respectively, for its current best estimate, amounts to be refunded to customers for potential adjustments from audits or reviews of contract costs incurred subsequent to fiscal year 2007.

Litigation

The Company is involved in legal proceedings and investigations arising in the ordinary course of business, including those relating to employment matters, relationships with clients and contractors, intellectual property disputes, and other business matters. These legal proceedings seek various remedies, including claims for monetary damages in varying amounts that currently range up to $40 million or are unspecified as to amount. Although the outcome of any such matter is inherently uncertain and may be materially adverse, based on current information, management does not expect any of the currently ongoing audits, reviews, investigations, or litigation to have a material adverse effect on the Company’s financial condition and results of operations. As of March 31, 2015 and 2014, there are no material amounts accrued in the consolidated financial statements related to these proceedings.

Six former officers and stockholders who had departed the company prior to the acquisition have filed a total of nine suits in various jurisdictions, with original filing dates ranging from July 3, 2008 through December 15, 2009, against us and certain of our current and former directors and officers. Three of these suits were amended on July 2, 2010 and then further amended into one consolidated complaint on September 7, 2010. Another two of the original nine suits were consolidated into one complaint on September 24, 2014. Each of the suits arises out of the acquisition and alleges that the former stockholders are entitled to certain payments that they would have received if they had held their stock at the time of the acquisition. Some of the suits also allege that the acquisition price paid to stockholders was insufficient. The various suits assert claims for breach of contract, tortious interference with contract, breach of fiduciary duty, civil Racketeer Influenced and Corrupt Organizations Act, or RICO, violations, violations of the Employee Retirement Income Security Act, and/or securities and common law fraud. Three of these suits have been dismissed with all appeals exhausted. The two suits that were consolidated into one action on September 24, 2014 were settled on April 16, 2015. One of the remaining suits has been dismissed by the United States District Court for the Southern District of California and is on appeal before the United States Court of Appeals for the Ninth Circuit. The other three remaining suits that were previously consolidated on September 7, 2010 have been dismissed by the United States District Court for the Southern District of New York, but are still subject to appeal by the plaintiffs. As of March 31, 2015, the aggregate alleged damages sought in these four remaining suits was approximately $291.7 million (which is sought to be trebled pursuant to RICO) plus punitive damages, costs, and fees. As of March 31, 2014, the aggregate alleged damages sought was approximately $348.7 million ($291.5 million of which is sought to be trebled pursuant to RICO) plus punitive damages, costs, and fees.

Although the outcome of any of these cases is inherently uncertain and may be materially adverse, based on current information, management does not expect them to have a material adverse effect on our financial condition and results of operations.

Business Segment Information	12 Months Ended
Business Segment Information	Mar. 31, 2015
Segment Reporting [Abstract]
BUSINESS SEGMENT INFORMATION	BUSINESS SEGMENT INFORMATION The Company reports operating results and financial data in one operating and reportable segment. The Company manages its business as a single profit center in order to promote collaboration, provide comprehensive functional service offerings across its entire client base, and provide incentives to employees based on the success of the organization as a whole. Although certain information regarding served markets and functional capabilities is discussed for purposes of promoting an understanding of the Company’s complex business, the Company manages its business and allocates resources at the consolidated level of a single operating segment.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 34
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 13: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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+ Details

Unaudited Quarterly Financial Data

12 Months Ended

Mar. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

UNAUDITED QUARTERLY FINANCIAL DATA



	2015 Quarters
	First		Second		Third		Fourth
Revenue	$	1,322,297	$	1,304,841	$	1,304,686	$	1,342,946
Operating income	139,023		121,983		105,256		92,560
Income before income taxes	119,049		104,973		86,616		75,280
Net income	71,115		65,284		52,807		43,363
Earnings per common share:
Basic (1)	$	0.49	$	0.43	$	0.35	$	0.29
Diluted (1)	$	0.47	$	0.42	$	0.35	$	0.29



	2014 Quarters
	First		Second		Third		Fourth
Revenue	$	1,427,691	$	1,378,020	$	1,273,150	$	1,399,832
Operating income	138,673		135,667		97,034		89,237
Income before income taxes	118,015		113,798		78,181		70,793
Net income	70,313		67,813		47,167		46,895
Earnings per common share:
Basic (1)	$	0.51	$	0.48	$	0.32	$	0.32
Diluted (1)	$	0.48	$	0.45	$	0.31	$	0.30

(1) Earnings per share are computed independently for each of the quarters presented and therefore may not sum to the total for the fiscal year.

Supplemental Financial Information

12 Months Ended

Mar. 31, 2015

Valuation and Qualifying Accounts [Abstract]

SUPPLEMENTAL FINANCIAL INFORMATION

The following schedule summarizes valuation and qualifying accounts for the periods presented:



	Fiscal Year Ended March 31,
	2015			2014			2013
Allowance for doubtful accounts:
Beginning balance	$	1,457		$	188		$	799
Provision for doubtful accounts	(1,100		)	1,621			397
Allowance for doubtful accounts from acquisitions	—			—			32
Charges against allowance	—			(352		)	(1,040		)
Ending balance	$	357		$	1,457		$	188
Tax valuation allowance:
Beginning balance	$	—		$	—		$	36,335
Deductions and other adjustments	—			—			(36,335		)
Ending balance	$	—		$	—		$	—

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, and have been prepared in accordance with accounting principles generally accepted in the United States, or U.S. GAAP. All intercompany balances and transactions have been eliminated in consolidation. The Company’s fiscal year ends on March 31 and unless otherwise noted, references to fiscal year or fiscal are for fiscal years ended March 31. The accompanying consolidated financial statements present the financial position of the Company as of March 31, 2015 and 2014 and the Company’s results of operations for fiscal 2015, fiscal 2014, and fiscal 2013.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. Areas of the financial statements where estimates may have the most significant effect include contractual and regulatory reserves, valuation and lives of tangible and intangible assets, contingent consideration related to business acquisitions, impairment of long-lived assets, accrued liabilities, revenue recognition, bonus and other incentive compensation, stock-based compensation, realization of deferred tax assets, provisions for income taxes, and postretirement obligations. Actual results experienced by the Company may differ materially from management's estimates.
Revenue Recognition	Revenue Recognition Substantially all of the Company’s revenue is derived from services and solutions provided to the U.S. government and its agencies, primarily by the Company’s consulting staff and, to a lesser extent, subcontractors. The Company generates its revenue from the following types of contractual arrangements: cost-reimbursable-plus-fee contracts, time-and-materials contracts, and fixed-price contracts. Revenue on cost-reimbursable-plus-fee contracts is recognized as services are performed, generally based on the allowable costs incurred during the period plus any recognizable earned fee. The Company considers fixed fees under cost-reimbursable-plus-fee contracts to be earned in proportion to the allowable costs incurred in performance of the contract. For cost-reimbursable-plus-fee contracts that include performance-based fee incentives, which are principally award fee arrangements, the Company recognizes income when such fees are probable and estimable. Estimates of the total fee to be earned are made based on contract provisions, prior experience with similar contracts or clients, and management’s evaluation of the performance on such contracts. Contract costs, including indirect expenses, are subject to audit by the Defense Contract Audit Agency, or DCAA, and, accordingly, are subject to possible cost disallowances. Executive compensation that we determine to be allowable for cost reimbursement based on management's estimates is recognized as revenue, net of reserves. Management's estimates in this regard are based on a number of factors that may change over time, including executive compensation survey data, our and other government contractors' experiences with the DCAA audit practices in our industry, and relevant decisions of courts and boards of contract appeals. Revenue earned under time-and-materials contracts is recognized as hours are worked based on contractually billable rates to the client. Costs on time-and-materials contracts are expensed as incurred. Revenue on fixed-price contracts is primarily recognized using the percentage of completion method based on actual costs incurred relative to total estimated costs for the contract. On some fixed-price contracts the Company may use an alternative input method to calculate the percent complete, such as labor hours or labor dollars. This method is used when a contract contains significant, up-front material purchases resulting in costs incurred that are not representative of the actual progress on the contract. In either method, these estimated costs are updated during the term of the contract, and may result in revision by the Company of recognized revenue and estimated costs in the period in which the changes in estimated costs are identified. Profits on fixed-price contracts result from the difference between incurred costs used to calculate the percentage of completion and revenue earned. Contract accounting requires significant judgment relative to assessing risks, estimating contract revenue and costs, and making assumptions for schedule and technical issues. Due to the size and nature of many of the Company’s contracts, developing total revenue and cost at completion estimates requires the use of significant judgment. Contract costs include direct labor and billable expenses, an allocation of allowable indirect costs, and warranty obligations. Billable expenses is comprised of subcontracting costs and other “out of pocket” costs that often include, but are not limited to, travel-related costs and telecommunications charges. The Company recognizes revenue and billable expenses from these transactions on a gross basis because it is the primary obligor on our contracts with customers. Assumptions regarding the length of time to complete the contract also include expected increases in wages and prices for materials. Estimates of total contract revenue and costs are monitored during the term of the contract and are subject to revision as the contract progresses. Anticipated losses on contracts are recognized in the period they are deemed probable and can be reasonably estimated. The Company’s contracts may include the delivery of a combination of one or more of the Company’s service offerings. In these situations, the Company determines whether such arrangements with multiple service offerings should be treated as separate units of accounting based on how the elements are bid or negotiated, whether the customer can accept separate elements of the arrangement, and the relationship between the pricing on the elements individually and combined.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash on hand and highly liquid investments having an original maturity of three months or less. The Company’s cash equivalents consist primarily of institutional money market funds. The Company maintains its cash and cash equivalents in bank accounts that, at times, exceed the federally insured limits. The Company has not experienced any losses in such accounts.
Valuation of Accounts Receivable	Valuation of Accounts Receivable The Company maintains allowances for doubtful accounts against certain billed receivables based upon the latest information regarding whether invoices are ultimately collectible. Assessing the collectability of customer receivables requires management judgment. The Company determines its allowance for doubtful accounts by specifically analyzing individual accounts receivable, historical bad debts, customer credit-worthiness, current economic conditions, and accounts receivable aging trends. Valuation reserves are periodically re-evaluated and adjusted as more information about the ultimate collectability of accounts receivable becomes available. Upon determination that a receivable is uncollectible, the receivable balance and any associated reserve are written off.
Concentrations of Credit Risk	Concentrations of Credit Risk Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash equivalents and accounts receivable. The Company’s cash equivalents are generally invested in Prime or U.S. government money market funds, which minimizes the credit risk. The Company believes that credit risk, for accounts receivable is limited as the receivables are primarily with the U.S. government.
Property and Equipment	Property and Equipment Property and equipment are recorded at cost, and the balances are presented net of accumulated depreciation. The cost of software purchased or internally developed is capitalized, as appropriate. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets. Furniture and equipment is depreciated over five to ten years, computer equipment is depreciated over four years, and software purchased or developed for internal use is depreciated over three to five years. Leasehold improvements are amortized over the shorter of the useful life of the asset or the lease term. Maintenance and repairs are charged to expense as incurred. Rent expense is recorded on a straight-line basis over the life of the respective lease. The difference between the cash payment and rent expense is recorded as deferred rent in either accounts payable and other accrued expenses or other long-term liabilities in the consolidated balance sheets, depending on when the amounts will be recognized. The Company receives incentives for tenant improvements on certain of its leases. The cash expended on such improvements is recorded as property and equipment and amortized over the life of the associated asset, or lease term, whichever is shorter. Incentives for tenant improvements are recorded as deferred rent in either accounts payable and other accrued expenses or other long-term liabilities in the consolidated balance sheets depending on when the amounts will be recognized. Then they are amortized on a straight line basis over the lease term.
Business Combinations	Business Combinations The accounting for the Company’s business combinations consists of allocating the purchase price to tangible and intangible assets acquired and liabilities assumed based on their fair values, with the excess recorded as goodwill. The Company has one year from the acquisition date to use additional information obtained to adjust the fair value of the acquired assets and liabilities which may result in changes to their recorded values with an offsetting adjustment to goodwill. During the fiscal year ended March 31, 2015, the Company entered into a contingent consideration arrangement in connection with a business acquisition which required a fair value measurement using inputs such as projected cash flows and volatility. See Note 18 to our consolidated financial statements for further information about the valuation of the contingent consideration liability and the inputs used in the fair value measurement.
Intangible Assets	Intangible Assets Intangible assets primarily consist of the Company's trade name, customer relationships, and other amortizable intangible assets. Customer relationships are amortized on an accelerated basis over the expected life based on projected future cash flows of approximately seven to nine years. The Company's trade name is not amortized, but is tested on at least an annual basis as of January 1 and more frequently if interim indicators of impairment exist. The trade name is considered to be impaired if the carrying value exceeds its estimated fair value. The Company used the relief from royalty method to estimate the fair value. The fair value of the asset is the present value of the license fees avoided by owning the asset, or the royalty savings. During the fiscal years ended March 31, 2015, 2014, and 2013 the Company did not record any impairment of intangible assets.
Goodwill	Intangible Assets Intangible assets primarily consist of the Company's trade name, customer relationships, and other amortizable intangible assets. Customer relationships are amortized on an accelerated basis over the expected life based on projected future cash flows of approximately seven to nine years. The Company's trade name is not amortized, but is tested on at least an annual basis as of January 1 and more frequently if interim indicators of impairment exist. The trade name is considered to be impaired if the carrying value exceeds its estimated fair value. The Company used the relief from royalty method to estimate the fair value. The fair value of the asset is the present value of the license fees avoided by owning the asset, or the royalty savings. During the fiscal years ended March 31, 2015, 2014, and 2013 the Company did not record any impairment of intangible assets. Goodwill The Company assesses goodwill for impairment on at least an annual basis on January 1 unless interim indicators of impairment exist. Goodwill is considered to be impaired when the net book value of a reporting unit exceeds its estimated fair value. The Company operates as a single operating segment and as a single reporting unit for the purpose of evaluating goodwill. As of January 1, 2015, the Company performed its annual impairment test of goodwill by comparing the fair value of the Company (primarily based on market capitalization) to the carrying value of equity, and concluded that the fair value of the reporting unit was greater than the carrying amount. During the fiscal years ended March 31, 2015, 2014, and 2013 the Company did not record any impairment of goodwill.
Long-Lived Assets	Long-Lived Assets The Company reviews its long-lived assets, including property and equipment and intangible assets, for impairment whenever events or changes in circumstances indicate that the carrying amounts of the assets may not be fully recoverable. If the total of the expected undiscounted future net cash flows is less than the carrying amount of the asset, a loss is recognized for any excess of the carrying amount over the fair value of the asset. During the fiscal years ended March 31, 2015, 2014, and 2013 the Company did not record any impairment charges.
Income Taxes	Income Taxes The Company provides for income taxes as a “C” corporation on income earned from operations. The Company is subject to federal, state, and foreign taxation in various jurisdictions. Deferred tax assets and liabilities are recorded to recognize the expected future tax benefits or costs of events that have been, or will be, reported in different years for financial statement purposes than for tax purposes. Deferred tax assets and liabilities are computed based on the difference between the financial statement carrying amount and tax basis of assets and liabilities using enacted tax rates and laws for the years in which these items are expected to reverse. If management determines that some portion or all of a deferred tax asset is not “more likely than not” to be realized, a valuation allowance is recorded as a component of the income tax provision to reduce the deferred tax asset to an appropriate level in that period. In determining the need for a valuation allowance, management considers all positive and negative evidence, including historical earnings, projected future taxable income, future reversals of existing taxable temporary differences, taxable income in prior carryback periods, and prudent, feasible tax-planning strategies. The Company periodically assesses its tax positions for all periods open to examination by tax authorities based on the latest available information. Where it is not more likely that not that the Company’s tax position will be sustained, the Company records its best estimate of the resulting tax liability, penalties, and interest in the consolidated financial statements. These uncertain tax positions are recorded as a component of income tax expense. As uncertain tax positions in periods open to examination are closed out, or as new information becomes available, the resulting change is reflected in the recorded liability and income tax expense. Penalties and interest recognized related to the reserves for uncertain tax positions are recorded as a component of income tax expense.
Comprehensive Income	Comprehensive Income Comprehensive income is the change in equity of a business enterprise during a period from transactions and other events and circumstances from nonowner sources, and is presented in the consolidated statements of comprehensive income. Accumulated other comprehensive income (loss) as of March 31, 2015 and 2014 consisted of net unrealized losses on the Company’s defined and postretirement benefit plans.
Share-Based Payments	Share-Based Payments Share-based payments to employees are recognized in the consolidated statements of operations based on their grant date fair values with the expense recognized on an accelerated basis over the vesting period. The Company uses the Black-Scholes option-pricing model to determine the fair value of its awards at the time of the grant.
Defined Benefit Plan and Other Postretirement Benefits	Defined Benefit Plan and Other Postretirement Benefits The Company recognizes the underfunded status of defined benefit plans on the consolidated balance sheets. Gains and losses and prior service costs and credits that have not yet been recognized through net periodic benefit cost are recognized in accumulated other comprehensive income (loss), net of tax effects, and will be amortized as a component of net periodic cost in future periods. The measurement date, the date at which the benefit obligations are measured, is the Company’s fiscal year end.
Self-Funded Medical Plans	Self-Funded Medical Plans The Company maintains self-funded medical insurance. Self-funded plans include a health maintenance organization, high-deductible, and traditional choice. Further, self-funded plans also include prescription drug and dental benefits. The Company records an incurred but unreported claim liability in the accrued compensation and benefits line of the consolidated balance sheets for self-funded plans based on an actuarial valuation. Data that drives this estimate are primarily based on claims and enrollment data provided by a third party valuation firm for medical and pharmacy related costs.
Deferred Compensation Plan	Deferred Compensation Plan The Company accounts for its deferred compensation plan in accordance with the terms of the underlying plan agreement. To the extent the terms of the contract attribute all or a portion of the expected future benefit to an individual year of the employee’s service, the cost of the benefits is recognized in that year. Therefore, the Company estimates the cost of future benefits that are expected to be paid and expenses the present value of those costs in the year as services are provided. As of March 31, 2015, there is no liability associated with the Company's deferred compensation plan.
Fair Value Measurements	Fair Value Measurements Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. In determining fair value, we consider the principal or most advantageous market in which the asset or liability would transact, and if necessary, consider assumptions that market participants would use when pricing the asset or liability. The accounting guidance for fair value measurements establishes a three level fair value hierarchy that prioritizes the inputs used in measuring fair value as follows: observable inputs such as quoted prices in active markets (Level 1); inputs other than quoted prices in active markets that are observable either directly or indirectly (Level 2); and unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions (Level 3). Assets and liabilities are classified in their entirety within the fair value hierarchy based on the lowest level input that is significant to the fair value measurement. See Note 18 for additional information on the Company’s fair value measurements.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued a new standard that will replace existing revenue recognition standards and significantly expand the disclosure requirements for revenue arrangements. In April 2015, the FASB proposed a one-year delay in the effective date of the standard to January 1, 2018, with an option that would permit companies to adopt the standard as early as the original effective date. Early adoption prior to the effective date is not permitted. A final decision on the effective date is expected in 2015. The new standard will be effective for the Company beginning on April 1, 2017 (i.e., beginning with the first quarter fiscal 2018 interim financial statements) or April 1, 2018 if the one-year delay is enacted. The new standard may be adopted retrospectively for all periods presented, or adopted using a modified retrospective approach. Under the retrospective approach, the fiscal 2017 and 2016 financial statements would be adjusted to reflect the effects of adopting the new standard in those periods. Under the modified retrospective approach, the new standard would only be adopted for the period beginning April 1, 2017 to new contracts and those contracts that are not yet complete at April 1, 2017, with a cumulative catch-up adjustment recorded to beginning retained earnings for existing contracts that still require performance. Management is still in the process of determining which transition method to utilize in order to adopt the new standard and still assessing what effect the adoption of this standard may have on the timing of our revenue recognition and our financial statements. Other recent accounting pronouncements issued by the FASB during fiscal 2015 and through the filing date did not and are not believed by management to have a material impact on the Company's present or historical consolidated financial statements.

Earnings Per Share (Tables)

12 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Reconciliation of the income used to compute basic and diluted EPS



	Fiscal Year Ended March 31,
	2015		2014		2013
Earnings for basic computations (1)	$	229,093	$	229,082	$	209,994
Weighted-average Class A Common Stock outstanding	144,809,906		139,275,596		131,068,847
Weighted-average Class B Non-Voting Common Stock outstanding	222,129		1,019,051		2,080,050
Weighted-average Class C Restricted Common Stock outstanding	382,085		1,019,897		1,253,832
Total weighted-average common shares outstanding for basic computations	145,414,120		141,314,544		134,402,729
Earnings for diluted computations (1)	$	229,101	$	229,082	$	209,994
Dilutive stock options and restricted stock	4,961,411		7,366,530		10,451,995
Average number of common shares outstanding for diluted computations	150,375,531		148,681,074		144,854,724
Earnings per common share
Basic	$	1.58	$	1.62	$	1.56
Diluted	$	1.52	$	1.54	$	1.45

Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

Intangible assets consisted of the following:



	As of March 31, 2015						As of March 31, 2014
	Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Amortizable intangible assets
Customer relationships and other amortizable intangible assets	$	196,359	$	167,177	$	29,182	$	187,758	$	157,071	$	30,687
Total	$	196,359	$	167,177	$	29,182	$	187,758	$	157,071	$	30,687

Unamortizable intangible assets
Trade name	$	190,200	$	—	$	190,200	$	190,200	$	—	$	190,200
Total	$	386,559	$	167,177	$	219,382	$	377,958	$	157,071	$	220,887

Expected amortization expense for intangible assets

The following table summarizes the estimated annual amortization expense for future periods indicated below:



For the Fiscal Year Ended March 31,
2016	$	10,722
2017	9,330
2018	3,889
2019	2,677
2020	1,468
Thereafter	1,096
Total amortization expense	$	29,182

Accounts Receivable, Net (Tables)

12 Months Ended

Mar. 31, 2015

Receivables [Abstract]

Accounts receivable, net

Accounts receivable, net consisted of the following:



	March 31,
	2015			2014
Current
Accounts receivable–billed	$	318,464		$	395,509
Accounts receivable–unbilled	539,203			522,685
Allowance for doubtful accounts	(357		)	(1,457		)
Accounts receivable, net	857,310			916,737
Long-term
Unbilled receivables	18,496			22,877
Total accounts receivable, net	$	875,806		$	939,614

Property and Equipment, Net (Tables)

12 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

Components of property and equipment, net

The components of property and equipment, net were as follows:



	March 31,
	2015			2014
Furniture and equipment	$	134,378		$	104,463
Computer equipment	57,723			49,469
Software	43,881			25,380
Leasehold improvements	152,661			201,166
Total	388,643			380,478
Less: Accumulated depreciation and amortization	(277,276		)	(251,051		)
Property and equipment, net	$	111,367		$	129,427

Accounts Payable and Other Accrued Expenses (Tables)

12 Months Ended

Mar. 31, 2015

Payables and Accruals [Abstract]

Schedule of accounts payable and other accrued expenses

Accounts payable and other accrued expenses consisted of the following:



	March 31,
	2015		2014
Vendor payables	$	215,995	$	265,079
Accrued expenses	265,820		223,728
Total accounts payable and other accrued expenses	$	481,815	$	488,807

Accrued Compensation and Benefits (Tables)

12 Months Ended

Mar. 31, 2015

Accrued Compensation and Benefits [Abstract]

Accrued compensation and benefits

Accrued compensation and benefits consisted of the following:



	March 31,
	2015		2014
Bonus	$	82,237	$	75,423
Retirement	29,285		43,405
Vacation	115,657		117,626
Stock-based compensation liability (Note 17)	31,732		39,922
Deferred Compensation (1)	—		27,547
Other	20,328		27,517
Total accrued compensation and benefits	$	279,239	$	331,440

Deferred Payment Obligation (Tables)

12 Months Ended

Mar. 31, 2015

Other Liabilities Disclosure [Abstract]

Deferred payment obligation

A reconciliation of the principal balance of the DPO to the amount recorded in the consolidated balance sheets for the periods presented are as follows:



	March 31,
	2015			2014
Deferred payment obligation	$	80,000		$	80,000
Indemnified pre-acquisition uncertain tax positions	(20,586		)	(19,556		)
Accrued interest	1,304			1,304
Amount recorded in the consolidated balance sheets	$	60,718		$	61,748

Debt (Tables)

12 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Debt

Debt consisted of the following:



	March 31, 2015					March 31, 2014
	Interest Rate		Outstanding Balance			Interest Rate		Outstanding Balance
Term Loan A	2.68	%	$	796,024		2.65	%	$	660,317
Term Loan B	3.75	%	830,311			3.75	%	998,602
Total			1,626,335					1,658,919
Less: Current portion of long-term debt			(57,063		)			(73,688		)
Long-term debt, net of current portion			$	1,569,272				$	1,585,231

Future debt principal repayments

The following table summarizes required future debt principal repayments:



	Payments Due By March 31,
	Total		2016		2017		2018		2019		2020		Thereafter
Term Loan A	$	798,875	$	57,063	$	77,813	$	98,562	$	349,637	$	215,800	$	—
Term Loan B	841,188		—		—		—		—		841,188		—
Total	$	1,640,063	$	57,063	$	77,813	$	98,562	$	349,637	$	1,056,988	$	—

Deferred Financing Costs (Tables)

12 Months Ended

Mar. 31, 2015

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Reconciliation of DIC

A reconciliation of the beginning and ending amount of Debt Issuance Costs, or DIC, for the periods presented are as follows:



	March 31,
	2015			2014
Beginning of year	$	25,670		$	31,820
Amortization	(5,334		)	(6,719		)
Accelerated amortization of DIC related to May 2014 Refinancing Transaction and August 2013 Repricing Transaction ¹	(1,131		)	(610		)
Additional DIC related to May 2014 Refinancing Transaction and August 2013 Repricing Transaction ²	2,035			1,179
End of year	$	21,240		$	25,670

¹ Included in "Amortization of debt issuance costs and loss on extinguishment" in the consolidated statement of cash flows.

²Included in "Debt issuance costs" in the consolidated statement of cash flows.

Deferred financing costs, by loan



	DIC Amortization Expense
	Total		2016		2017		2018		2019		2020		Thereafter
Term Loan A	$	6,012	$	1,732	$	1,622	$	1,463	$	1,108	$	87	$	—
Term Loan B	7,501		1,611		1,678		1,752		1,830		630		—
Revolver	7,727		1,858		1,853		1,853		1,853		310		—
Total	$	21,240	$	5,201	$	5,153	$	5,068	$	4,791	$	1,027	$	—

Income Taxes (Tables)

12 Months Ended

Mar. 31, 2015

Income Tax Disclosure [Abstract]

Components of income tax expense

The components of income tax expense were as follows:



	Fiscal Year Ended March 31,
	2015			2014			2013
Current
U.S. Federal	$	133,400		$	148,908		$	161,838
State and local	22,492			26,062			35,503
Total current	155,892			174,970			197,341
Deferred
U.S. Federal	(2,938		)	(22,540		)	(40,652		)
State and local	395			(3,831		)	(7,436		)
Total deferred	(2,543		)	(26,371		)	(48,088		)
Total	$	153,349		$	148,599		$	149,253

Effective income tax rate reconciliation



	Fiscal Year Ended March 31,
	2015		2014			2013
Income tax expense computed at U.S. federal statutory rate (35%)	$	135,071	$	133,275		$	128,909
Increases (reductions) resulting from:
Changes in uncertain tax positions	1,038		1,838			1,477
State income taxes, net of the federal tax benefit	15,039		13,847			17,039
Meals and entertainment	1,513		1,135			1,365
Other	688		(1,496		)	463
Income tax expense from operations	$	153,349	$	148,599		$	149,253

Components of deferred tax assets and liabilities

Significant components of the Company’s net deferred income tax (liability) asset were as follows:



	March 31,
	2015			2014
Deferred income tax assets:
Accrued expenses	$	92,747		$	96,554
Accrued compensation	36,956			40,198
Stock-based compensation	25,537			34,532
Pension and postretirement insurance	44,030			31,776
Property and equipment	14,035			7,753
Net operating loss & Capital loss carryforwards	263			532
Deferred rent and tenant allowance	13,700			11,256
Other	7,777			6,974
Total gross deferred income tax assets	235,045			229,575
Less: Valuation allowance	—			—
Total net deferred income tax assets	235,045			229,575
Deferred income tax liabilities:
Accrued compensation-IRC Section 481(a)	(10,039		)	(20,086		)
Unbilled receivables	(104,017		)	(98,129		)
Intangible assets	(81,486		)	(80,054		)
Debt issuance costs	(4,395		)	(6,650		)
Other	(5,811		)	(3,200		)
Total deferred income tax liabilities	(205,748		)	(208,119		)
Net deferred income tax asset	$	29,297		$	21,456

Potential tax benefits roll forward

A reconciliation of the beginning and ending amount of potential tax benefits for the periods presented is as follows:



	March 31,
	2015			2014			2013
Beginning of year	$	54,966		$	55,679		$	54,895
Federal benefit from change in reserve	—			—			—
Increases in prior year position	27			364			1,074
Increases in current year position	203			—			—
Settlements with taxing authorities	(32		)	(1,074		)	(11		)
Lapse of statute of limitations	—			(3		)	(279		)
End of year	$	55,164		$	54,966		$	55,679

Employee Benefit Plans (Tables)

12 Months Ended

Mar. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Components of net postretirement medical expense

The components of net postretirement medical expense for the Officer Medical Plan were as follows:



	Fiscal Year Ended March 31,
	2015		2014		2013
Service cost	$	4,086	$	4,745	$	3,892
Interest cost	3,568		3,660		3,147
Net actuarial loss	582		2,728		1,537
Total postretirement medical expense	$	8,236	$	11,133	$	8,576

Weighted-average discount rate for benefit obligation

The weighted-average discount rate used to determine the year-end benefit obligations was as follows:



	Fiscal Year Ended March 31,
	2015		2014		2013
Officer Medical Plan	4.25	%	4.75	%	4.75	%
Retired Officers’ Bonus Plan	4.25	%	4.75	%	4.75	%

Assumed health care cost trend rates

Assumed healthcare cost trend rates for the Officer Medical Plan at March 31, 2015 and 2014 were as follows:



Pre-65 initial rate	2015		2014
Healthcare cost trend rate assumed for next year	7.00	%	7.25	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00	%	5.00	%
Year that the rate reaches the ultimate trend rate	2023		2023



Post-65 initial rate	2015		2014
Healthcare cost trend rate assumed for next year	6.75	%	7.00	%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)	5.00	%	5.00	%
Year that the rate reaches the ultimate trend rate	2023		2022

Effect of one-percentage-point change in assumed health care cost trend rates

A one-percentage-point change in assumed healthcare cost trend rates calculated as of March 31, 2015 would have the following effects:



	1% Increase		1% Decrease
Effect on total of service and interest cost	$	1,497	$	(1,188	)
Effect on postretirement benefit obligation	19,964		(15,774		)

Change in Benefit Obligation

The changes in the benefit obligation, plan assets, and funded status of the Officer Medical Plan were as follows:



	Fiscal Year Ended March 31,
	2015			2014			2013
Benefit obligation, beginning of the year	$	75,902		$	78,735		$	63,585
Service cost	4,086			4,745			3,892
Interest cost	3,568			3,660			3,147
Net actuarial (gain) loss	26,293			(9,436		)	9,891
Benefits paid	(2,532		)	(1,802		)	(1,780		)
Benefit obligation, end of the year	$	107,317		$	75,902		$	78,735

Change in fair value of plan assets



Changes in plan assets
Fair value of plan assets, beginning of the year	$	—		$	—		$	—
Employer contributions	2,532			1,802			1,780
Benefits paid	(2,532		)	(1,802		)	(1,780		)
Fair value of plan assets, end of the year	$	—		$	—		$	—

Expected future benefit payments

The expected future medical benefit payments and related contributions are as follows:




For the Fiscal Year Ending March 31,
2016	2,672
2017	3,030
2018	3,368
2019	4,027
2020	4,454
2021-2024	27,292

Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Mar. 31, 2015

Equity [Abstract]

Schedule of accumulated other comprehensive loss

The following table represents a rollforward of amounts recognized in accumulated other comprehensive loss, net of tax:



	March 31,
	2015			2014			2013
Beginning of year	$	(6,636	)	$	(13,787	)	$	(8,715	)
Other comprehensive income (loss) before reclassifications	(15,873		)	5,499			(5,996		)
Amounts reclassified from accumulated other comprehensive loss	350			1,652			924
Net current-period other comprehensive income (loss)	(15,523		)	7,151			(5,072		)
End of year	$	(22,159	)	$	(6,636	)	$	(13,787	)

Reclassifications out of accumulated other comprehensive loss to net income

The following table presents the reclassifications out of accumulated other comprehensive loss to net income:



	March 31,
	2015			2014			2013
Amortization of net actuarial loss included in net periodic benefit cost (See Note 13)
Total before tax	$	577		$	2,728		$	1,524
Tax benefit	(227		)	(1,076		)	(600		)
Net of tax	$	350		$	1,652		$	924

Other Long -Term Liabilities (Tables)

12 Months Ended

Mar. 31, 2015

Other Liabilities Disclosure [Abstract]

Other long-term liabilities

Other long-term liabilities consisted of the following:



	March 31,
	2015		2014
Deferred rent	$	34,732	$	28,527
Stock-based compensation liability (Note 17)	—		25,966
Deferred payment obligation	59,414		60,444
Postretirement benefit obligation	111,624		80,527
Other (1)	8,515		5,746
Total other long-term liabilities	$	214,285	$	201,210

Stockholders Equity (Tables)

12 Months Ended

Mar. 31, 2015

Equity [Abstract]

Dividends Declared [Table Text Block]

The following table summarizes the cash distributions recognized in the consolidated statement of cash flows:



	Fiscal Year Ended March 31,
	2015		2014		2013
Recurring dividends (1)	$	67,846	$	57,063	$	48,736
Special dividends (2)	147,248		288,739		1,073,733
Dividend equivalents (3)	47,110		56,138		59,471
Total distributions	$	262,204	$	401,940	$	1,181,940

(1) Amounts represent recurring quarterly dividends that were declared and paid for during each quarter of fiscal 2015, fiscal 2014, and fiscal 2013.

(3) Dividend equivalents are distributions made to option holders equal to the special dividends declared and paid.

Stock-Based Compensation (Tables)

12 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based compensation expense recognized in the consolidated statements of operations

The following table summarizes stock-based compensation expense recognized in the consolidated statements of operations:



	Fiscal Year Ended March 31,
	2015		2014		2013
Cost of revenue	$	8,652	$	5,672	$	7,061
General and administrative expenses	17,511		14,393		17,780
Total	$	26,163	$	20,065	$	24,841

The following table summarizes the total stock-based compensation expense recognized in the consolidated statements of operations by the following types of equity awards:



	Fiscal Year Ended March 31,
	2015		2014		2013
Equity Incentive Plan Options	$	4,897	$	7,257	$	13,148
Class A Restricted Common Stock	21,266		12,171		8,412
Rollover Options	—		578		2,970
Class C Restricted Stock	—		59		311
Total	$	26,163	$	20,065	$	24,841

Schedule of unrecognized compensation cost

Absent the effect of accelerating stock compensation cost for any departures of employees who may continue to vest in their equity awards, the following tables summarize the unrecognized compensation cost, the weighted average period the cost is expected to be amortized, and the estimated annual compensation cost for the future periods indicated below (excludes any future awards):



	Unrecognized Compensation Cost				Weighted Average Remaining Period to be Recognized
	March 31, 2015		March 31, 2014		March 31, 2015	March 31, 2014
Equity Incentive Plan Options	$	4,475	$	8,249	2.83	3.10
Class A Restricted Common Stock	23,418		8,157		2.71	2.02
Total	$	27,893	$	16,406



	Total Unrecognized Compensation Cost
	Total		2016		2017		2018		2019
Equity Incentive Plan Options	$	4,475	$	2,639	$	1,233	$	480	$	123
Class A Restricted Common Stock	23,418		14,320		6,649		2,383		66
Total	$	27,893	$	16,959	$	7,882	$	2,863	$	189

Shares withheld to cover taxes

As a result of these transactions, the Company repurchased a total of 388,824 shares and recorded them as treasury shares at a cost of $8.6 million, detailed as follows:



Total Shares Withheld to Cover Taxes
Trade Date	Shares	Cost	Total
April 1, 2014	2,111	$22.32	$	47,118
May 21, 2014	3,266	$22.17	72,407
June 30, 2014	212,445	$21.24	4,512,332
September 12, 2014	159,179	$22.85	3,637,240
March 1, 2015	943	$29.76	28,064
March 31, 2015	10,880	$28.94	314,867
Total	388,824		$	8,612,028

Black Scholes weighted average assumptions

The weighted average assumptions used in the Black-Scholes option-pricing model for stock option awards were as follows:



	For The Fiscal Year Ended March 31,
	2015	2014	2013
Dividend yield	1.9%	2.19%	2.07%
Expected volatility	30.42%	30.97%	33.12%
Risk-free interest rate	1.60%	1.36%	1.44%
Expected life (in years)	5.00	6.64	7.00
Weighted-average grant date fair value	$5.55	$4.59	$4.69

Recorded stock-based compensation liabilities



	March 31, 2015						March 31, 2014
	EIP Options		Rollover Options		Total		EIP Options		Rollover Options		Total
Current portion of liability¹	$	3,697	$	28,035	$	31,732	$	3,675	$	36,247	$	39,922
Long-term portion of liability²	—		—		—		—		25,966		25,966
	$	3,697	$	28,035	$	31,732	$	3,675	$	62,213	$	65,888

¹ Included in accrued compensation and benefits (Note 8).

²Included in other long-term liabilities.

Unvested restricted stock activity

The following table summarizes unvested restricted stock activity for the periods presented:



	Number of Shares	Weighted Average Grant Date Fair Value

Unvested Restricted Stock Awards
Unvested at March 31, 2014	1,296,013	17.06
Granted	1,617,069	22.62
Vested	693,228	17.34
Forfeited	1,839	21.57
Unvested at March 31, 2015	2,218,015	21.02

Stock options outstanding

The following table summarizes stock option activity for the periods presented:



	Number of Options	Weighted Average Exercise Price
Officers’ Rollover Stock Plan Options
Retirement Eligible:
Options outstanding at March 31, 2014	728,550	$	0.01	*
Granted	—
Forfeited	—
Expired	—
Exercised	728,550	0.01		*
Options outstanding at March 31, 2015	—			*
Non-Retirement Eligible:
Options outstanding at March 31, 2014	3,696,103	$	0.01	*
Granted	—
Forfeited	—
Expired	—
Exercised	1,838,977	0.01		*
Options outstanding at March 31, 2015	1,857,126	$	0.01	*
Equity Incentive Plan Options
Options outstanding at March 31, 2014	7,050,965	$	9.39
Granted	306,262	23.38
Forfeited	246,710	13.38
Expired	—	—
Exercised	833,712	7.30
Options outstanding at March 31, 2015	6,276,805	$	10.19	**

* Amount reduced for $4.642 dividend issued December 11, 2009, $1.087 dividend issued July 27, 2009, $1.50 dividend issued May 29, 2012, and the $6.50 dividend issued July 30, 2012.

** Reflects exercise price adjustment of $6.36 per grant for the $6.50 dividend per share issued July 30, 2012.

The following table summarizes unvested stock options for the periods presented:



	Number of Options	Weighted Average Grant Date Fair Value
Equity Incentive Plan Options
Unvested at March 31, 2014	3,403,059	$	5.78
Granted	306,262	5.55
Vested	1,232,686	6.00
Forfeited	246,710	5.31
Unvested at March 31, 2015	2,229,925	$	5.68

The following table summarizes stock options outstanding at March 31, 2015:



Range of exercise prices	Stock Options Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Intrinsic Value		Stock Options Exercisable	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Intrinsic Value
				(In years)					(In years)
Officers’ Rollover Stock Plan
$0.01	1,857,126	$0.01	(1)	0.25	$53,727		1,857,126	$0.01	0.25	$53,727
Equity Incentive Plan
$4.28 - $29.38	6,276,805	$10.19	(2)	5.71	$	117,663	4,046,880	$7.81	4.91	$85,511

(1) Amount reduced for $ 4.642 dividend issued December 11, 2009, $1.087 dividend issued July 27, 2009, $1.50 dividend issued May 29, 2012 and the $6.50 dividend issued July 30, 2012.

(2) Reflects exercise price adjustment of $6.36 per grant for the $6.50 dividend per share issued July 30, 2012.

Fair Value Measurements (Tables)

12 Months Ended

Mar. 31, 2015

Fair Value Disclosures [Abstract]

Recurring Fair Value Measurements



	Recurring Fair Value Measurements as of March 31, 2015
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents:
Cash and cash equivalents	$	48,942	$	—	$	—	$	48,942
Money market funds (1)	—		158,275		—		158,275
Total cash and cash equivalents	$	48,942	$	158,275	$	—	$	207,217
Liabilities:
Contingent earnout liability (2)	—		—		4,500		4,500
Total liabilities	$	—	$	—	$	4,500	$	4,500



	Recurring Fair Value Measurements as of March 31, 2014
	Level 1		Level 2		Level 3		Total
Cash and cash equivalents:
Cash and cash equivalents	$	37,886	$	—	$	—	$	37,886
Money market funds (1)	—		222,108		—		222,108
Total cash and cash equivalents	$	37,886	$	222,108	$	—	$	259,994

Summary of Changes in Fair Value of Contingent Earnout Liability, Categorized as Level 3



	Contingent Earnout Liability
Balance at March 31, 2014	$	—
Issuances	4,500
Balance at March 31, 2015	$	4,500

Commitments and Contingencies (Tables)

12 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Future minimum operating lease payments

Future minimum operating lease payments for noncancelable operating leases and future minimum income for noncancelable sublease rentals are summarized as follows:



For the Fiscal Year Ending March 31,	Operating Lease Payments		Operating Sublease Income
2016	$	70,158	$	198
2017	43,014		47
2018	31,608		17
2019	26,305		10
2020	22,172		4
Thereafter	48,464		—
	$	241,721	$	276

- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

+ References + Details

Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Mar. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Schedule of quarterly financial information



	2015 Quarters
	First		Second		Third		Fourth
Revenue	$	1,322,297	$	1,304,841	$	1,304,686	$	1,342,946
Operating income	139,023		121,983		105,256		92,560
Income before income taxes	119,049		104,973		86,616		75,280
Net income	71,115		65,284		52,807		43,363
Earnings per common share:
Basic (1)	$	0.49	$	0.43	$	0.35	$	0.29
Diluted (1)	$	0.47	$	0.42	$	0.35	$	0.29



	2014 Quarters
	First		Second		Third		Fourth
Revenue	$	1,427,691	$	1,378,020	$	1,273,150	$	1,399,832
Operating income	138,673		135,667		97,034		89,237
Income before income taxes	118,015		113,798		78,181		70,793
Net income	70,313		67,813		47,167		46,895
Earnings per common share:
Basic (1)	$	0.51	$	0.48	$	0.32	$	0.32
Diluted (1)	$	0.48	$	0.45	$	0.31	$	0.30

Supplemental Financial Information (Tables)

12 Months Ended

Mar. 31, 2015

Valuation and Qualifying Accounts [Abstract]

Schedule of valuation and qualifying accounts

The following schedule summarizes valuation and qualifying accounts for the periods presented:



	Fiscal Year Ended March 31,
	2015			2014			2013
Allowance for doubtful accounts:
Beginning balance	$	1,457		$	188		$	799
Provision for doubtful accounts	(1,100		)	1,621			397
Allowance for doubtful accounts from acquisitions	—			—			32
Charges against allowance	—			(352		)	(1,040		)
Ending balance	$	357		$	1,457		$	188
Tax valuation allowance:
Beginning balance	$	—		$	—		$	36,335
Deductions and other adjustments	—			—			(36,335		)
Ending balance	$	—		$	—		$	—

Business Overview (Details)	12 Months Ended
Business Overview (Details)	Mar. 31, 2015 employees segments
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments \| segments	1
Number of employees \| employees	22,500

Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details)	12 Months Ended
	Mar. 31, 2015
Furniture and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Furniture and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Computer equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	4 years
Software \| Minimum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Software \| Maximum
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years

Summary of Significant Accounting Policies (Intangible Assets) (Details)	12 Months Ended
	Mar. 31, 2015
Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	9 years
Customer relationships \| Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Customer relationships \| Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	9 years

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Deferred Compensation Plan) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Compensation Related Costs [Abstract]
Deferred Compensation	$ 0	$ 27,547

Earnings Per Share (Details) - USD ($)	3 Months Ended								12 Months Ended
Earnings Per Share (Details) - USD ($)	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]
Earnings for basic computations									$ 229,093,000	$ 229,082,000	$ 209,994,000
Weighted-average common shares outstanding for basic computations									145,414,120	141,314,544	134,402,729
Earnings for diluted computations									$ 229,101,000	$ 229,082,000	$ 209,994,000
Dilutive stock options and restricted stock									4,961,411	7,366,530	10,451,995
Average number of common shares outstanding for diluted computations									150,375,531	148,681,074	144,854,724
Earnings per common share, Basic	$ 0.29	$ 0.35	$ 0.43	$ 0.49	$ 0.32	$ 0.32	$ 0.48	$ 0.51	$ 1.58	$ 1.62	$ 1.56
Earnings per common share, Diluted	$ 0.29	$ 0.35	$ 0.42	$ 0.47	$ 0.30	$ 0.31	$ 0.45	$ 0.48	$ 1.52	$ 1.54	$ 1.45
Payments of Dividends									$ 215,094,000	$ 345,802,000	$ 1,122,457,000
Restricted Stock
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]
Unvested shares participating in the payment of the Company's dividends declared									2,200,000	1,300,000	1,200,000
Payments of Dividends									$ 3,200,000	$ 3,100,000	$ 9,100,000
Undistributed earnings (loss) allocated to participating securities, basic									256,000	0	0
Undistributed earnings (loss) allocated to participating securities, diluted									$ 248,000	$ 0	$ 0
Stock Options
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive options excluded from the computation of EPS									306,000	1,072,000	328,000
Common stock, Class A
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted-average common shares outstanding for basic computations									144,809,906	139,275,596	131,068,847
Non-voting common stock, Class B
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted-average common shares outstanding for basic computations									222,129	1,019,051	2,080,050
Restricted common stock, Class C
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]
Weighted-average common shares outstanding for basic computations									382,085	1,019,897	1,253,832

Goodwill and Intangible Assets (Goodwill) (Details) - USD ($)	Jan. 01, 2015	Jan. 01, 2014	Mar. 31, 2015	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill			$ 1,304,231,000	$ 1,273,789,000
Goodwill impairment	$ 0	$ 0

Goodwill and Intangible Assets (Finite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 196,359	$ 187,758
Accumulated Amortization	167,177	157,071
Finite-Lived Intangible Assets, Net Carrying Value	29,182	30,687
Customer relationships and other amortizable intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	196,359	187,758
Accumulated Amortization	167,177	157,071
Finite-Lived Intangible Assets, Net Carrying Value	$ 29,182	$ 30,687

Goodwill and Intangilbe Assets (Indefinite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Intangible Assets
Intangible Assets, Gross	$ 386,559	$ 377,958
Accumulated Amortization	167,177	157,071
Intangible Assets, Net	219,382	220,887
Trade name
Indefinite-lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	$ 190,200	$ 190,200

Goodwill and Intangible Assets (Expected Amortization Expense) (Details) - USD ($)			12 Months Ended
	Jan. 01, 2015	Jan. 01, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Trade name impairment	$ 0	$ 0
Amortization of intangible assets			$ 10,700,000	$ 14,800,000	$ 14,800,000
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2016			10,722,000
2017			9,330,000
2018			3,889,000
2019			2,677,000
2020			1,468,000
Thereafter			1,096,000
Finite-Lived Intangible Assets, Net Carrying Value			29,182,000	30,687,000
Customer relationships and other amortizable intangible assets
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Finite-Lived Intangible Assets, Net Carrying Value			$ 29,182,000	$ 30,687,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			7 years
Minimum \| Customer relationships and other amortizable intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			7 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			9 years
Maximum \| Customer relationships and other amortizable intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			9 years
Weighted Average \| Customer relationships and other amortizable intangible assets
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			4 years 7 months

Accounts Receivable, Net (Details) - USD ($) $ in Thousands	12 Months Ended
Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable-billed	$ 318,464	$ 395,509
Allowance for doubtful accounts	(357)	(1,457)
Accounts receivable, net, current	857,310	916,737
Total accounts receivable, net	875,806	939,614
Provision for doubtful accounts	(1,000)	1,300	$ 544
Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable-unbilled	539,203	522,685
Other Noncurrent Assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable-unbilled	$ 18,496	$ 22,877

Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 388,643	$ 380,478
Accumulated depreciation and amortization	(277,276)	(251,051)
Property and equipment, net	111,367	129,427
Depreciation and amortization expense related to property and equipment	52,700	57,600	$ 59,500
Reduction to gross cost and accumulated depreciation for zero net book value assets	16,300	17,300
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	134,378	104,463
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	57,723	49,469
Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	43,881	25,380
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	152,661	201,166
Internally developed software
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 4,900	$ 6,600

Accounts Payable and Other Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Payables and Accruals [Abstract]
Vendor payables	$ 215,995	$ 265,079
Accrued expenses	265,820	223,728
Total accounts payable and other accrued expenses	$ 481,815	$ 488,807

Accrued Compensation and Benefits (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Accrued Compensation and Benefits [Abstract]
Bonus	$ 82,237	$ 75,423
Retirement	29,285	43,405
Vacation	115,657	117,626
Stock-based compensation liability, current	31,732	39,922
Deferred Compensation	0	27,547
Other	20,328	27,517
Total accrued compensation and benefits	$ 279,239	$ 331,440

Deferred Payment Obligation (Details) - USD ($) $ in Thousands			12 Months Ended
	Dec. 11, 2009	Jul. 31, 2008	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Other Liabilities Disclosure [Abstract]
Deferred payment obligation, original amount		$ 158,000
Deferred payment obligation, term		8 years 6 months
Deferred payment obligation, payment pursuant of the Merger Agreement	$ 78,000
Deferred payment obligation, payment	100,400
Deferred payment obligation, accrued interest payment	$ 22,400		$ 8,000	$ 8,000
Deferred payment obligation			80,000	80,000
Pre-acquisition uncertain tax positions			57,800	56,800
Indemnified pre-acquisition uncertain tax positions			$ (20,586)	(19,556)	$ (18,500)
Interest rate per six-month period on unpaid deferred payment obligation			5.00%
Accrued interest			$ 1,304	1,304
Deferred payment obligation, amount recorded in the consolidated balance sheets			$ 60,718	$ 61,748

Debt (Schedule of Debt) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt	$ 1,626,335	$ 1,658,919
Less: Current portion of long-term debt	(57,063)	(73,688)
Long-term debt, net of current portion	$ 1,569,272	$ 1,585,231
Secured Debt \| Term Loan A
Long-term Debt, Current and Noncurrent [Abstract]
Interest rate	2.68%	2.65%
Long-term debt	$ 796,024	$ 660,317
Secured Debt \| Term Loan B
Long-term Debt, Current and Noncurrent [Abstract]
Interest rate	3.75%	3.75%
Long-term debt	$ 830,311	$ 998,602

Debt (Details) - USD ($)		9 Months Ended	12 Months Ended
Debt (Details) - USD ($)	May 07, 2014	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Debt Instrument [Line Items]
Proceeds from debt issuance			$ 248,438,000	$ 300,000,000	$ 1,739,750,000
Amortization Of Ratable Portions Of Debt Issuance Costs And Original Issuance Discounts Not Qualifying For Deferral			1,200,000
Write off of deferred Debt Issuance Cost not Deferred			2,000,000	1,600,000
Repayment of debt			279,563,000	355,563,000	$ 993,250,000
Long-term debt, unamortized discount		$ 12,300,000	13,700,000	12,300,000
Term Loan A
Debt Instrument [Line Items]
Debt Instrument, periodic payment, interest			21,000,000	19,000,000
Term Loan B
Debt Instrument [Line Items]
Debt Instrument, periodic payment, interest			29,000,000	41,900,000
Secured Debt \| Term Loan A
Debt Instrument [Line Items]
Proceeds from debt issuance	$ 168,400,000
Term loan, face amount			$ 830,000,000
Quarterly periodic payment percentage, principal	1.25%
Quarterly principal periodic payment percentage, year two	1.875%
Quarterly principal periodic payment percentage, year three	2.50%
Quarterly principal periodic payment percentage, year four	3.125%
Quarterly principal periodic payment percentage, year five	13.00%
Secured Debt \| Term Loan A \| Minimum
Debt Instrument [Line Items]
Long-term debt, basis spread on variable rate			2.00%
Secured Debt \| Term Loan A \| Maximum
Debt Instrument [Line Items]
Long-term debt, basis spread on variable rate			2.75%
Secured Debt \| Term Loan A \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Long-term debt, basis spread on variable rate			2.50%
Secured Debt \| Term Loan B
Debt Instrument [Line Items]
Term loan, face amount			$ 841,200,000
Repayment of debt	$ 168,400,000
Secured Debt \| Term Loan B \| Minimum
Debt Instrument [Line Items]
Long-term debt, basis spread on variable rate		0.75%
Secured Debt \| Term Loan B \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Long-term debt, basis spread on variable rate		3.00%
Secured Debt \| Term Loan B \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum
Debt Instrument [Line Items]
Long-term debt, basis spread on variable rate		3.00%
Secured Debt \| Term Loan B \| Alternative Base Rate (ABR) [Member] \| Minimum
Debt Instrument [Line Items]
Long-term debt, basis spread on variable rate		2.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity			500,000,000
Proceeds from line of credit			80,000,000	300,000,000
Revolving credit facility, amount outstanding		$ 0	0	$ 0
Letter of Credit
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity			$ 100,000,000

Debt (Future debt principal repayments) (Details) - Secured Debt $ in Thousands	Mar. 31, 2015 USD ($)
Debt Instrument [Line Items]
Total	$ 1,640,063
2016	57,063
2017	77,813
2018	98,562
2019	349,637
2020	1,056,988
Thereafter	0
Term Loan A
Debt Instrument [Line Items]
Total	798,875
2016	57,063
2017	77,813
2018	98,562
2019	349,637
2020	215,800
Thereafter	0
Term Loan B
Debt Instrument [Line Items]
Total	841,188
2016	0
2017	0
2018	0
2019	0
2020	841,188
Thereafter	$ 0

Deferred Financing Costs (Details) - USD ($) $ in Thousands	12 Months Ended
Deferred Financing Costs (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Beginning of year	$ 25,670	$ 31,820
Amortization	(5,334)	(6,719)
Accelerated amortization of DIC related to May 2014 Refinancing Transaction and August 2013 Repricing Transaction	(1,131)	(610)
Additional DIC related to May 2014 Refinancing Transaction and August 2013 Repricing Transaction	2,035	1,179
End of year	21,240	25,670
Deferred finance costs, additions	4,000	2,800
Write off of deferred Debt Issuance Cost not Deferred	$ 2,000	$ 1,600

Deferred Financing Costs (DIC by Loan) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Schedule of Other Assets [Line Items]
Total	$ 21,240	$ 25,670	$ 31,820
2016	5,201
2017	5,153
2018	5,068
2019	4,791
2020	1,027
Thereafter	0
Secured Debt \| Term Loan A
Schedule of Other Assets [Line Items]
Total	6,012
2016	1,732
2017	1,622
2018	1,463
2019	1,108
2020	87
Thereafter	0
Secured Debt \| Term Loan B
Schedule of Other Assets [Line Items]
Total	7,501
2016	1,611
2017	1,678
2018	1,752
2019	1,830
2020	630
Thereafter	0
Revolving Credit Facility
Schedule of Other Assets [Line Items]
Total	7,727
2016	1,858
2017	1,853
2018	1,853
2019	1,853
2020	310
Thereafter	$ 0

Income Taxes (Components of Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Current
U.S. Federal	$ 133,400	$ 148,908	$ 161,838
State and local	22,492	26,062	35,503
Total current	155,892	174,970	197,341
Deferred
U.S. Federal	(2,938)	(22,540)	(40,652)
State and local	395	(3,831)	(7,436)
Total deferred	(2,543)	(26,371)	(48,088)
Total	$ 153,349	$ 148,599	$ 149,253

Income Taxes (Reconciliation of Income Tax) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	35.00%	35.00%	35.00%
Income tax expense computed at U.S. federal statutory rate (35%)	$ 135,071	$ 133,275	$ 128,909
Changes in uncertain tax positions	1,038	1,838	1,477
State income taxes, net of the federal tax benefit	15,039	13,847	17,039
Meals and entertainment	1,513	1,135	1,365
Other	688	(1,496)	463
Total	$ 153,349	$ 148,599	$ 149,253

Income Taxes (Components of Net Deferred Income Taxes) (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Deferred income tax assets:
Accrued expenses	$ 92,747	$ 96,554
Accrued compensation	36,956	40,198
Stock-based compensation	25,537	34,532
Pension and postretirement insurance	44,030	31,776
Property and equipment	14,035	7,753
Net operating loss & Capital loss carryforwards	263	532
Deferred rent and tenant allowance	13,700	11,256
Other	7,777	6,974
Total gross deferred income tax assets	235,045	229,575
Less: Valuation allowance	0	0
Total net deferred income tax assets	235,045	229,575
Deferred income tax liabilities:
Accrued Compensation-IRC Section 481(a)	(10,039)	(20,086)
Unbilled receivables	(104,017)	(98,129)
Intangible assets	(81,486)	(80,054)
Debt issuance costs	(4,395)	(6,650)
Other	(5,811)	(3,200)
Total deferred income tax liabilities	(205,748)	(208,119)
Net deferred income tax asset	$ 29,297	$ 21,456

Income Taxes (Uncertain Tax Positions) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income tax reserve	$ 58,444,000	$ 57,406,000	$ 57,000,000
Indemnified pre-acquisition uncertain tax positions	(20,586,000)	(19,556,000)	(18,500,000)
Reconciliation of the beginning and ending amount of potential tax benefits
Beginning of year	54,966,000	55,679,000	54,895,000
Federal benefit from change in reserve	0	0	0
Increases in prior year position	27,000	364,000	1,074,000
Increases in current year position	203,000	0	0
Settlements with taxing authorities	(32,000)	(1,074,000)	(11,000)
Lapse of statute of limitations	0	(3,000)	(279,000)
End of year	55,164,000	54,966,000	55,679,000
Accrued interest and penalties	840,000	1,100,000	952,000
Income tax reserve, accrued penalties and interest	3,300,000	$ 2,400,000	$ 1,300,000
Income tax reserve, potential reduction for lapse in statute of limitations	$ 57,900,000

Employee Benefit Plans (Additional Information) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Compensation and Retirement Disclosure [Abstract]
Employer Matching Contribution, Percent of Match	6.00%
Employees’ Capital Accumulation Plan, Total expense recognized	$ 110,700,000	$ 165,600,000	$ 237,100,000
Employees’ Capital Accumulation Plan, Company-paid contributions	124,800,000	$ 205,200,000	$ 242,600,000
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Other Changes, Mortality Assumptions	9,600,000
Defined Benefit Plan, Other Changes, Discount Rate Assumptions	$ 8,900,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate Adjustment	0.50%
Retired Officers' Bonus Plan
Defined Benefit Plan Disclosure [Line Items]
Deferred Compensation Arrangement with Individual, Annual Cash Award Granted per Year of Service, Amount	$ 10,000

Employee Benefit Plans (Components of Net Postretirement Medical Expense) (Details) - Officer Medical Plan - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4,086	$ 4,745	$ 3,892
Interest cost	3,568	3,660	3,147
Net actuarial loss	582	2,728	1,537
Total postretirement medical expense	$ 8,236	$ 11,133	$ 8,576

Employee Benefit Plans (Weighted Average Discount Rate) (Details)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Officer Medical Plan
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate for benefit obligation	4.25%	4.75%	4.75%
Retired Officers' Bonus Plan
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate for benefit obligation	4.25%	4.75%	4.75%

Employee Benefit Plans (Healthcare Cost Trend Rates) (Details) - Officer Medical Plan - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Health care cost trend rate assumed for next year, Pre 65	7.00%	7.25%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate), Pre 65	5.00%	5.00%
Year that the rate reaches the ultimate trend rate, Pre 65	2023	2023
Health care cost trend rate assumed for next year, Post 65	6.75%	7.00%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate), Post 65	5.00%	5.00%
Year that the rate reaches the ultimate trend rate, Post 65	2023	2022
Effect of one percentage point increase on total of service and interest cost	$ 1,497
Effect of one percentage point decrease on total of service and interest cost	(1,188)
Effect of one percentage point increase on postretirement benefit obligation	19,964
Effect of one percentage point decrease on postretirement benefit obligation	$ (15,774)

Employee Benefit Plans (Retired Officers' Bonus Plan) (Details) - Retired Officers' Bonus Plan - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Defined Benefit Plan Disclosure [Line Items]
Retired Officers' Bonus Plan, total pension expense	$ 686,000	$ 768,000	$ 743,000
Benefits paid	1,300,000	1,100,000	$ 361,000
Defined benefit plan, funded status of plan	$ 4,300,000	$ 4,700,000

Employee Benefit Plans (Accumulated Other Comprehensive Income) (Details) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Unrecognized gross actuarial loss	$ 25,600,000
Unrecognized net actuarial gain		$ 6,700,000
Unrecognized actuarial gain (loss), tax	10,100,000	$ 4,400,000
Amount to be amortized from accumulated other comprehensive income (loss) next fiscal year	3,500,000
Net prior service cost, accumulated other comprehensive income net periodic cost in fiscal 2016	0
Net transition (asset) obligation, accumulated other comprehensive income net periodic cost in fiscal 2016	$ 0

Employee Benefit Plans (Change in Benefit Obligation and Change in Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Officer Medical Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of the year	$ 75,902	$ 78,735	$ 63,585
Service cost	4,086	4,745	3,892
Interest cost	3,568	3,660	3,147
Net actuarial (gain) loss	26,293	(9,436)	9,891
Benefits paid	(2,532)	(1,802)	(1,780)
Benefit obligation, end of the year	107,317	75,902	78,735
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning of the year	0	0	0
Employer contributions	2,532	1,802	1,780
Benefits paid	(2,532)	(1,802)	(1,780)
Fair value of plan assets, end of the year	0	0	0
Defined benefit plan, funded status of plan	(107,300)	(75,900)
Retired Officers' Bonus Plan
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefits paid	(1,300)	(1,100)	(361)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Benefits paid	(1,300)	(1,100)	$ (361)
Defined benefit plan, funded status of plan	$ 4,300	$ 4,700

Employee Benefit Plans (Future Benefit Payments) (Details) $ in Thousands	Mar. 31, 2015 USD ($)
Compensation and Retirement Disclosure [Abstract]
2016	$ 2,672
2017	3,030
2018	3,368
2019	4,027
2020	4,454
2021-2024	$ 27,292

Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Equity [Abstract]
Beginning of year	$ (6,636)	$ (13,787)	$ (8,715)
Other comprehensive income (loss) before reclassifications	(15,873)	5,499	(5,996)
Amounts reclassified from accumulated other comprehensive loss	350	1,652	924
Net current-period other comprehensive income (loss)	(15,523)	7,151	(5,072)
End of year	$ (22,159)	$ (6,636)	$ (13,787)

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

+ References + Details

Accumulated Other Comprehensive Loss (Reclassifications out of Accumulated Other Comprehensive Loss to Net Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit	$ (153,349)	$ (148,599)	$ (149,253)
Reclassification out of Accumulated Other Comprehensive Income \| Accumulated Defined Benefit Plans Adjustment
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	577	2,728	1,524
Tax benefit	(227)	(1,076)	(600)
Net of tax	$ 350	$ 1,652	$ 924

Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Other Liabilities Disclosure [Abstract]
Deferred rent	$ 34,732	$ 28,527
Stock-based compensation liability (Note 17)	0	25,966
Deferred payment obligation	59,414	60,444
Postretirement benefit obligation	111,624	80,527
Other (1)	8,515	5,746
Total other long-term liabilities	214,285	201,210
Business Combination, Contingent Consideration, Liability	4,500
Stock-based compensation liability, current and noncurrent	31,700	65,900
Stock-based compensation liability, current	$ 31,732	$ 39,922

Stockholders' Equity (Common Stock Shares Activity) (Details)	12 Months Ended
	Mar. 31, 2015 vote / shares
Equity [Abstract]
Common stock votes per share	1

Stockholders' Equity (Employee Stock Purchase Plan and Share Repurchase Program) (Details) - USD ($) $ / shares in Units, $ in Millions									12 Months Ended	53 Months Ended
	Mar. 31, 2015	Mar. 01, 2015	Feb. 02, 2015	Nov. 05, 2014	Sep. 12, 2014	Jun. 30, 2014	May 21, 2014	Apr. 01, 2014	Mar. 31, 2015	Mar. 31, 2015	Jan. 27, 2015	Dec. 12, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share repurchase program, amount authorized											$ 180.0	$ 30.0
Repurchase of common stock, in shares	10,880	943	1,000,000	1,000,000	159,179	212,445	3,266	2,111
Repurchase of common stock, cost per share	$ 28.94	$ 29.76	$ 28.36	$ 25.10	$ 22.85	$ 21.24	$ 22.17	$ 22.32
Share repurchase program, remaining authorized repurchase amount	$ 126.5								$ 126.5	$ 126.5
Employee Stock Purchase Plan \| Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan, aggregate shares	10,000,000								10,000,000	10,000,000
Employee stock purchase plan, purchase price discount from the fair market value									5.00%
Shares purchased by employees under the employee stock purchase plan									213,825	1,508,895

Stockholders' Equity (Dividends) (Details) - USD ($) $ / shares in Units, $ in Thousands														3 Months Ended				12 Months Ended
	May 21, 2015	Aug. 29, 2014	Jul. 30, 2014	Feb. 28, 2014	Jan. 31, 2014	Nov. 29, 2013	Oct. 29, 2013	Aug. 31, 2012	Jul. 30, 2012	Jun. 29, 2012	May 29, 2012	Dec. 11, 2009	Jul. 27, 2009	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends																		$ 262,204	$ 401,940	$ 1,181,940
Special Cash Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends																		$ 147,248	$ 288,739	$ 1,073,733
Dividends paid		$ 1.00		$ 1.00		$ 1.00		$ 6.50		$ 1.50								$ 1.00	$ 2.00	$ 8.00
Dividends declared per share			$ 1.00		$ 1.00		$ 1.00		$ 6.50		$ 1.50	$ 4.642	$ 1.087
Ordinary Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends																		$ 67,846	$ 57,063	$ 48,736
Dividends declared per share														$ 0.13	$ 0.11	$ 0.11	$ 0.11
Ordinary Dividend \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per share	$ 0.13
Dividend Equivalent
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends																		$ 47,110	$ 56,138	$ 59,471

Stock-Based Compensation (Stock-based Compensation Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 26,163	$ 20,065	$ 24,841
EIP \| Stock Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	4,897	7,257	13,148
Annual Incentive Plan \| Restricted Stock \| Common stock, Class A
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	21,266	12,171	8,412
Rollover Plan \| Stock Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	0	578	2,970
Rollover Plan \| Restricted Stock \| Restricted common stock, Class C
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	0	59	311
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	8,652	5,672	7,061
General and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 17,511	$ 14,393	$ 17,780

Stock Based Compensation (Unrecognized Compensation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock-based compensation agreements	$ 27,893	$ 16,406
Unrecognized compensation cost, amortization period	4 years
2016	$ 16,959
2017	7,882
2018	2,863
2019	189
EIP \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock-based compensation agreements	$ 4,475	$ 8,249
Unrecognized compensation cost, amortization period	2 years 9 months 28 days	3 years 1 month 7 days
2016	$ 2,639
2017	1,233
2018	480
2019	123
Annual Incentive Plan \| Restricted Stock \| Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock-based compensation agreements	$ 23,418	$ 8,157
Unrecognized compensation cost, amortization period	2 years 8 months 14 days	2 years 9 days
2016	$ 14,320
2017	6,649
2018	2,383
2019	$ 66

Stock-Based Compensation (Stock Plans) (Details) - USD ($)																12 Months Ended
	Mar. 31, 2015	Mar. 01, 2015	Feb. 05, 2015	Feb. 02, 2015	Nov. 05, 2014	Sep. 12, 2014	Sep. 02, 2014	Aug. 08, 2014	Jul. 01, 2014	Jun. 30, 2014	Jun. 23, 2014	May 21, 2014	May 02, 2014	Apr. 01, 2014	Aug. 01, 2008	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price			$ 29.17				$ 22.69	$ 21.18	$ 21.57		$ 21.57		$ 23.45
Repurchase of common stock, in shares	10,880	943		1,000,000	1,000,000	159,179				212,445		3,266		2,111
Repurchase of common stock, cost per share	$ 28.94	$ 29.76		$ 28.36	$ 25.10	$ 22.85				$ 21.24		$ 22.17		$ 22.32
Repurchase of common stock	$ 314,867	$ 28,064				$ 3,637,240				$ 4,512,332		$ 72,407		$ 47,118		$ 62,140,000	$ 3,709,000	$ 1,067,000
Rollover Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement By Share-based Payment Award, Options, Grants In Period, Grant Date Fair Value															$ 127,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value																	$ 16,200,000
Rollover Plan \| Restricted Stock \| Restricted common stock, Class C
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion of Stock, Shares Issued															2,028,270
Conversion of Stock, Fair Value Per Share															$ 10.00
Conversion of Stock, Aggregate Grant Date Fair Value															$ 20,300,000
Shares vested in period																	136,200
Employee stock purchase plan, aggregate shares	3,971,730															3,971,730	3,971,730
EIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period																1,617,069
Shares vested in period																693,228
EIP \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period																10 years
Share-Based Compensation Arrangement By Share-based Payment Award, Options, Grants In Period, Grant Date Fair Value																$ 1,700,000	$ 4,900,000	$ 4,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value																14,000,000	17,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value																$ 15,000,000	$ 31,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	12,753,436															12,753,436	9,197,629
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																5 years
EIP \| Restricted Stock \| Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			1,593				7,238	26,915			196,095		896,060
Share Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value			$ 50,000				$ 200,000	$ 600,000			$ 4,200,000		$ 21,000,000			$ 15,000,000	$ 8,700,000
Annual Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement By Share-based Payment Award, Annual Incentive Payment, Equity Portion, Increase Percentage	20.00%															20.00%
Annual Incentive Plan \| Restricted Stock \| Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period									23,282
Share Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value									$ 500,000
Annual Incentive Plan \| Restricted Stock Units (RSUs) \| Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period									465,886
Share Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value									$ 10,100,000
EIP and Rollover Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Repurchase of common stock, in shares																388,824
Repurchase of common stock																$ 8,612,028
Director \| EIP \| Restricted Stock \| Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																1 year
Executive Officer \| EIP \| Restricted Stock \| Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period											4 years		4 years			4 years

Stock-Based Compensation (Stock Option Assumptions) (Details) - $ / shares	3 Months Ended				12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield					1.90%	2.19%	2.07%
Expected volatility					30.42%	30.97%	33.12%
Risk-free interest rate					1.60%	1.36%	1.44%
Expected life (in years)					5 years	6 years 7 months 19 days	7 years
Granted, weighted average grant date fair value					$ 5.55	$ 4.59	$ 4.69
Stock Options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield					1.66%
Stock Options \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield					2.04%
Ordinary Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per share	$ 0.13	$ 0.11	$ 0.11	$ 0.11

Stock-Based Compensation (Special Dividends) (Details) - USD ($)											3 Months Ended				12 Months Ended
	Sep. 30, 2014	Aug. 29, 2014	Jul. 30, 2014	Jun. 30, 2014	Jan. 31, 2014	Oct. 29, 2013	Jul. 30, 2012	May 29, 2012	Dec. 11, 2009	Jul. 27, 2009	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Dividend Equivalent, Per Share															$ 1.00
Cash payment for special dividends															$ 47,110,000	$ 56,138,000	$ 49,765,000
Stock-based compensation liability, current											$ 31,732,000				31,732,000	39,922,000
Stock-based compensation liability, non-current											0				0	25,966,000
Stock-based compensation liability, current and noncurrent											31,700,000				$ 31,700,000	65,900,000
Unrecognized compensation cost, amortization period															4 years
Special Cash Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per share			$ 1.00		$ 1.00	$ 1.00	$ 6.50	$ 1.50	$ 4.642	$ 1.087
Recorded and unrecorded stock-based compensation liability, current and noncurrent											$ 35,800,000				$ 35,800,000	$ 73,100,000
Ordinary Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividends declared per share											$ 0.13	$ 0.11	$ 0.11	$ 0.11
Stock Options \| EIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, amortization period															2 years 9 months 28 days	3 years 1 month 7 days
Stock Options \| Special Cash Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation liability, current											$ 31,732,000				$ 31,732,000	$ 39,922,000
Stock-based compensation liability, non-current											0				0	25,966,000
Stock-based compensation liability, current and noncurrent											31,732,000				31,732,000	$ 65,888,000
Stock Options \| Special Cash Dividend \| EIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash payment for special dividends		$ 4,500,000		$ 4,400,000
Share-based compensation arrangement, plan modification, incremental compensation cost															600,000
Share-based compensation arrangement, plan modification, incremental compensation cost recognized in period															1,000,000
Share-based compensation arrangement, plan modification, incremental compensation cost, deferred											500,000				500,000
Share-based compensation arrangement, plan modification, incremental compensation cost, deferred, recognition period																2 years 3 months
Stock-based compensation liability, current											3,697,000				3,697,000	$ 3,675,000
Stock-based compensation liability, current and noncurrent											3,697,000				3,697,000	3,675,000
Unrecorded stock-based compensation liability, current and noncurrent											4,100,000				4,100,000	$ 7,200,000
Unrecognized compensation cost, amortization period																4 years
Stock Options \| Special Cash Dividend \| Rollover Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash payment for special dividends	$ 37,800,000
Stock-based compensation liability, current											28,035,000				28,035,000	$ 36,247,000
Stock-based compensation liability, non-current											0				0	25,966,000
Stock-based compensation liability, current and noncurrent											28,035,000				28,035,000	62,213,000
Unrecorded stock-based compensation liability, current and noncurrent											$ 0				$ 0	$ 0

Stock-Based Compensation (Stock Option and Restricted Stock Award Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands								3 Months Ended				12 Months Ended
	Jul. 30, 2014	Jan. 31, 2014	Oct. 29, 2013	Jul. 30, 2012	May 29, 2012	Dec. 11, 2009	Jul. 27, 2009	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Aug. 31, 2012
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Granted, weighted average grant date fair value												$ 5.55	$ 4.59	$ 4.69
Rollover Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, ending balance								1,857,126				1,857,126
Outstanding, ending balance, weighted average exercise price								$ 0.01				$ 0.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, ending balance								1,857,126				1,857,126
Outstanding, ending balance, weighted average exercise price								$ 0.01				$ 0.01
Outstanding, ending balance, weighted average remaining contractual life, in years												3 months
Outstanding, intrinsic value								$ 53,727				$ 53,727
Stock options exercisable								1,857,126				1,857,126
Stock options exercisable, weighted average exercise price								$ 0.01				$ 0.01
Stock options exercisable, weighted average remaining contractual life, in years												3 months
Stock options exercisable, intrinsic value								$ 53,727				$ 53,727
Retirement Eligible \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning balance											728,550	728,550
Outstanding, beginning balance, weighted average exercise price											$ 0.01	$ 0.01
Exercised												728,550
Exercised, weighted average exercise price												$ 0.01
Outstanding, ending balance								0				0	728,550
Outstanding, ending balance, weighted average exercise price													$ 0.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, ending balance								0				0	728,550
Outstanding, ending balance, weighted average exercise price													$ 0.01
Non-Retirement Eligible \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning balance											3,696,103	3,696,103
Outstanding, beginning balance, weighted average exercise price											$ 0.01	$ 0.01
Exercised												1,838,977
Exercised, weighted average exercise price												$ 0.01
Outstanding, ending balance								1,857,126				1,857,126	3,696,103
Outstanding, ending balance, weighted average exercise price													$ 0.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, ending balance								1,857,126				1,857,126	3,696,103
Outstanding, ending balance, weighted average exercise price													$ 0.01
EIP
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Unvested, beginning balance											1,296,013	1,296,013
Unvested, beginning balance, weighted average grant date fair value								$ 21.02				$ 21.02	$ 17.06
Granted												1,617,069
Granted, weighted average grant date fair value												$ 22.62
Vested												693,228
Vested, weighted average grant date fair value												$ 17.34
Forfeited												1,839
Forfeited, weighted average grant date fair value												$ 21.57
Unvested, ending balance								2,218,015				2,218,015	1,296,013
Unvested, beginning balance, weighted average grant date fair value											$ 17.06	$ 17.06
EIP \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding, beginning balance											7,050,965	7,050,965
Outstanding, beginning balance, weighted average exercise price											$ 9.39	$ 9.39
Granted												306,262
Granted, weighted average exercise price												$ 23.38
Forfeited												246,710
Forfeited, weighted average exercise price												$ 13.38
Expired												0
Expired, weighted average exercise price												$ 0.00
Exercised												833,712
Exercised, weighted average exercise price												$ 7.30
Outstanding, ending balance								6,276,805				6,276,805	7,050,965
Outstanding, ending balance, weighted average exercise price								$ 10.19				$ 10.19	$ 9.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Unvested, beginning balance											3,403,059	3,403,059
Unvested, beginning balance, weighted average grant date fair value											$ 5.78	$ 5.78
Granted												306,262
Granted, weighted average grant date fair value												$ 5.55
Vested												1,232,686
Vested, weighted average grant date fair value												$ 6.00
Forfeited												246,710
Forfeited, weighted average grant date fair value												$ 5.31
Unvested, ending balance								2,229,925				2,229,925	3,403,059
Unvested, ending balance, weighted average grant date fair value								$ 5.68				$ 5.68	$ 5.78
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Outstanding, ending balance								6,276,805				6,276,805	7,050,965
Outstanding, ending balance, weighted average exercise price								$ 10.19				$ 10.19	$ 9.39
Outstanding, ending balance, weighted average remaining contractual life, in years												5 years 8 months 14 days
Outstanding, intrinsic value								$ 117,663				$ 117,663
Stock options exercisable								4,046,880				4,046,880
Stock options exercisable, weighted average exercise price								$ 7.81				$ 7.81
Stock options exercisable, weighted average remaining contractual life, in years												4 years 10 months 27 days
Stock options exercisable, intrinsic value								$ 85,511				$ 85,511
Ordinary Dividend
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Dividends declared per share								$ 0.13	$ 0.11	$ 0.11	$ 0.11
Special Cash Dividend
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Dividends declared per share	$ 1.00	$ 1.00	$ 1.00	$ 6.50	$ 1.50	$ 4.642	$ 1.087
Special Cash Dividend \| EIP \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Dividend, option exercise price reduction, per share															$ 6.36
Stock Options \| EIP
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Exercise price, lower range limit												$ 4.28
Exercise price, upper range limit												$ 29.38

Fair Value Measurements (Recurring Fair Value Measurements) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 9,000
Fair Value Assumptions, Expected Volatility Rate	30.00%
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	$ 207,217	$ 259,994
Total liabilities	4,500
Fair Value, Measurements, Recurring \| Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Noncurrent	4,500
Fair Value, Measurements, Recurring \| Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	48,942	37,886
Fair Value, Measurements, Recurring \| Money market fund
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	158,275	222,108
Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	48,942	37,886
Total liabilities	0
Fair Value, Measurements, Recurring \| Level 1 \| Cash and cash equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	48,942	37,886
Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	158,275	222,108
Total liabilities	0
Fair Value, Measurements, Recurring \| Level 2 \| Money market fund
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	158,275	$ 222,108
Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	0
Total liabilities	4,500
Fair Value, Measurements, Recurring \| Level 3 \| Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Noncurrent	$ 4,500

Fair Value Measurements Fair Value Measurements (Level 3 Rollforward) (Details)	12 Months Ended
	Mar. 31, 2015 USD ($)
Fair Value Disclosures [Abstract]
Balance at March 31, 2014	$ 0
Issuances	4,500,000
Balance at March 31, 2015	$ 4,500,000

Related-Party Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands									12 Months Ended
	Mar. 31, 2015	Mar. 01, 2015	Feb. 02, 2015	Nov. 05, 2014	Sep. 12, 2014	Jun. 30, 2014	May 21, 2014	Apr. 01, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Jul. 31, 2008
Related Party Transactions [Abstract]
Repurchase of common stock, in shares	10,880	943	1,000,000	1,000,000	159,179	212,445	3,266	2,111
Repurchase of common stock, cost per share	$ 28.94	$ 29.76	$ 28.36	$ 25.10	$ 22.85	$ 21.24	$ 22.17	$ 22.32
Underwriting agreement, shares sold by selling stockholder			12,000,000
Revenue associated with related parties									$ 1,100	$ 444	$ 739
Cost associated with related parties									857	368	657
Lender syndicate, outstanding debt amount	$ 47,000								47,000	55,500
Management agreement, annual fee												$ 1,000
Management agreement, one-time payment												$ 20,000
Management agreement, advisory fees									$ 1,000	$ 1,000	$ 1,000

Commitments and Contingecies (Details) $ in Thousands	12 Months Ended
Commitments and Contingecies (Details) $ in Thousands	Mar. 31, 2015 USD ($) leases	Mar. 31, 2014 USD ($)	Mar. 31, 2013 USD ($)	Jul. 31, 2008 leases
Commitments and Contingencies Disclosure [Abstract]
Rent expense, net	$ 92,900	$ 103,500	$ 105,900
Rent expense, sublease rentals	696	$ 2,500	$ 5,500
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2016	70,158
2017	43,014
2018	31,608
2019	26,305
2020	22,172
Thereafter	48,464
Operating leases, future minimum payments due	241,721
Operating Leases, Future Minimum Payments Due, Sublease Rentals, Fiscal Year Maturity [Abstract]
2016	198
2017	47
2018	17
2019	10
2020	4
Thereafter	0
Operating leases, future minimum payments due, future minimum sublease rentals	$ 276
Number of facility leases assigned to Booz & Co. \| leases				9
Number of facility leases assigned to Booz & Co., outstanding \| leases	2
Maximum potential amount of undiscounted future lease payments	$ 9,300
Contracts with U.S. government agencies or other U.S. government contractors
Concentration Risk [Line Items]
Concentration risk, percentage	98.00%	98.00%	99.00%
Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Liability for reductions and/or penalties from U.S Governement audits	$ 205,300	$ 189,800
Financial Standby Letter of Credit [Member]
Concentration Risk [Line Items]
Guarantor Obligations, Current Carrying Value	5,300	2,400
Guarantor Obligations, Liquidation Proceeds, Monetary Amount	5,200	$ 2,400
Guarantor Obligations, Facility	5,000
Guarantor Obligations, Available Amount	$ 4,900

Commitments and Contingencies (Litigation) (Details) $ in Millions		12 Months Ended		17 Months Ended	48 Months Ended
	Apr. 16, 2015 claims	Mar. 31, 2015 USD ($) claims	Mar. 31, 2014 USD ($)	Dec. 15, 2009 plaintiffs claims	Mar. 31, 2014 claims	Sep. 24, 2014 claims	Jul. 02, 2010 claims
Legal proceedings and investigations arising in the ordinary course of business \| Maximum
Loss Contingencies [Line Items]
Loss contingencies, damages sought, value \| $		$ 40.0
Former stockholder litigation
Loss Contingencies [Line Items]
Loss contingencies, number of plaintiffs \| plaintiffs				6
Loss contingencies, new claims filed, number				9
Loss contingencies, claims amended, number						2	3
Loss contingencies, claims dismissed, number					3
Loss contingencies, damages sought, value \| $			$ 348.7
Former stockholder litigation \| Subsequent Event
Loss Contingencies [Line Items]
Loss contingencies, claims settled, number	1
Former stockholder litigation \| United States Court of Appeals for the Ninth Circuit
Loss Contingencies [Line Items]
Loss contingencies, pending claims, number		1
Former stockholder litigation \| United States District Court for the Southern District of New York
Loss Contingencies [Line Items]
Loss contingencies, pending claims, number		3
Former stockholder litigation \| RICO
Loss Contingencies [Line Items]
Loss contingencies, damages sought, value \| $		$ 291.7	$ 291.5

Business Segment Information (Details)	12 Months Ended
Business Segment Information (Details)	Mar. 31, 2015 segments
Segment Reporting [Abstract]
Number of operating segments	1
Number of reportable segments	1

Unaudited Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Revenue	$ 1,342,946	$ 1,304,686	$ 1,304,841	$ 1,322,297	$ 1,399,832	$ 1,273,150	$ 1,378,020	$ 1,427,691	$ 5,274,770	$ 5,478,693	$ 5,758,059
Operating income	92,560	105,256	121,983	139,023	89,237	97,034	135,667	138,673	458,822	460,611	446,234
Income before income taxes	75,280	86,616	104,973	119,049	70,793	78,181	113,798	118,015	385,918	380,787	368,311
Net income	$ 43,363	$ 52,807	$ 65,284	$ 71,115	$ 46,895	$ 47,167	$ 67,813	$ 70,313	$ 232,569	$ 232,188	$ 219,058
Earnings per common share:
Earnings per common share, Basic	$ 0.29	$ 0.35	$ 0.43	$ 0.49	$ 0.32	$ 0.32	$ 0.48	$ 0.51	$ 1.58	$ 1.62	$ 1.56
Earnings per common share, Diluted	$ 0.29	$ 0.35	$ 0.42	$ 0.47	$ 0.30	$ 0.31	$ 0.45	$ 0.48	$ 1.52	$ 1.54	$ 1.45

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References + Details

Supplemental Financial Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	$ 1,457	$ 188	$ 799
Provision for doubtful accounts	(1,100)	1,621	397
Allowance for doubtful accounts from acquisitions	0	0	32
Charges against allowance	0	(352)	(1,040)
Ending balance	357	1,457	188
Tax valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning balance	0	0	36,335
Charges against allowance	0	0	(36,335)
Ending balance	$ 0	$ 0	$ 0