Booz Allen Hamilton Holding (BAH) 10-Q 28 Jan 15 2015 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Dec. 31, 2014	Jan. 23, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Booz Allen Hamilton Holding Corp
Entity Central Index Key	1443646
Document Type	10-Q
Document Period End Date	31-Dec-14
Amendment Flag	FALSE
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	-28
Entity Filer Category	Large Accelerated Filer
Common stock, Class A
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		147,908,527
Non-voting common stock, Class B
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		0
Restricted common stock, Class C
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		0
Special voting common stock, Class E
Entity Listings [Line Items]
Entity Common Stock, Shares Outstanding		1,851,590

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$197,443	$259,994
Accounts receivable, net of allowance	844,745	916,737
Prepaid expenses and other current assets	112,358	79,246
Total current assets	1,154,546	1,255,977
Property and equipment, net of accumulated depreciation	105,537	129,427
Intangible assets, net of accumulated amortization	222,373	220,887
Goodwill	1,299,370	1,273,789
Other long-term assets	50,244	60,738
Total assets	2,832,070	2,940,818
Current liabilities:
Current portion of long-term debt	51,875	73,688
Accounts payable and other accrued expenses	438,022	488,807
Accrued compensation and benefits	292,184	331,440
Other current liabilities	26,774	23,169
Total current liabilities	808,855	917,104
Long-term debt, net of current portion	1,584,069	1,585,231
Other long-term liabilities	243,897	266,847
Total liabilities	2,636,821	2,769,182
Commitments and contingencies (Note 16)
Stockholders’ equity:
Treasury stock, at cost — 1,986,626 shares at December 31, 2014 and 609,625 shares at March 31, 2014	-43,522	-10,153
Additional paid-in capital	163,381	144,269
Retained earnings	80,264	42,688
Accumulated other comprehensive loss	-6,379	-6,636
Total stockholders’ equity	195,249	171,636
Total liabilities and stockholders’ equity	2,832,070	2,940,818
Common stock, Class A
Stockholders’ equity:
Common stock	1,499	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

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Mar. 31, 2014
Treasury stock, shares	1,986,626	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	149,895,153	143,962,073
Common stock, shares outstanding	147,908,527	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

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Revenue	$1,304,686	$1,273,150	$3,931,824	$4,078,861
Operating costs and expenses:
Cost of revenue	641,541	662,053	1,928,967	2,048,663
Billable expenses	366,371	320,370	1,064,994	1,083,890
General and administrative expenses	176,327	175,748	524,368	520,557
Depreciation and amortization	15,191	17,945	47,233	54,377
Total operating costs and expenses	1,199,430	1,176,116	3,565,562	3,707,487
Operating income	105,256	97,034	366,262	371,374
Interest expense	-17,863	-18,874	-54,544	-59,761
Other, net	-777	21	-1,080	-1,619
Income before income taxes	86,616	78,181	310,638	309,994
Income tax expense	33,809	31,014	121,432	124,701
Net income	$52,807	$47,167	$189,206	$185,293
Earnings per common share (Note 3):
Basic (in dollars per share)	$0.35	$0.32	$1.28	$1.31
Diluted (in dollars per share)	$0.35	$0.31	$1.24	$1.24
Dividends declared per share	$0.11	$1.10	$1.33	$1.30

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$52,807	$47,167	$189,206	$185,293
Change in postretirement plan costs, net of tax	86	419	257	1,952
Comprehensive income	$52,893	$47,586	$189,463	$187,245

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities
Net income	$189,206	$185,293
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	47,233	54,377
Stock-based compensation expense	19,954	14,119
Excess tax benefits from the exercise of stock options	-48,452	-36,844
Amortization of debt issuance costs and loss on extinguishment	9,538	9,444
Losses on dispositions and impairments	1,396	911
Changes in assets and liabilities:
Accounts receivable	73,088	140,785
Prepaid expenses and other current assets	15,008	19,963
Other long-term assets	773	-1,679
Accrued compensation and benefits	-31,390	-25,824
Accounts payable and other accrued expenses	-56,419	-15,619
Accrued interest	7,467	-630
Other current liabilities	1,582	-48,610
Other long-term liabilities	-926	-3,352
Net cash provided by operating activities	228,058	292,334
Cash flows from investing activities
Purchases of property and equipment	17,466	12,344
Cash paid for business acquisitions, net of cash acquired	23,907	-3,563
Escrow receipts	0	-3,282
Net cash used in investing activities	-41,373	-5,499
Cash flows from financing activities
Net proceeds from issuance of common stock	3,699	3,785
Stock option exercises	4,272	12,773
Excess tax benefits from the exercise of stock options	48,452	36,844
Repurchases of common stock	-33,369	-2,935
Cash dividends paid	195,924	186,828
Dividend equivalents paid to option holders	-47,006	-52,065
Debt issuance costs	-8,610	-6,223
Repayment of debt	-219,188	-289,406
Proceeds from debt issuance	198,438	250,000
Net cash used in financing activities	-249,236	-234,055
Net (decrease) increase in cash and cash equivalents	-62,551	52,780
Cash and cash equivalents-beginning of period	259,994	350,384
Cash and cash equivalents-end of period	197,443	403,164
Cash paid during the period for:
Interest	36,552	46,927
Income taxes	$114,276	$140,893

Business_Overview

Business Overview	9 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BUSINESS OVERVIEW	BUSINESS OVERVIEW
	Organization
	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, and not-for-profit organizations. The Company reports operating results and financial data in one operating segment. The Company is headquartered in McLean, Virginia, with approximately 22,300 employees as of December 31, 2014.

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION
	The Company prepared the unaudited condensed consolidated financial statements in this Quarterly Report on Form 10-Q, or Quarterly Report, in accordance with accounting principles generally accepted in the United States, or U.S. GAAP, for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. As a result, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The Company followed the accounting policies used and disclosed in the consolidated financial statements included in the Annual Report on Form 10-K for the fiscal year ended March 31, 2014 filed with the Securities and Exchange Commission on May 22, 2014, or Annual Report, and policies stated within this Quarterly Report. 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 interim financial information in this Quarterly Report reflects all adjustments, consisting of normal recurring adjustments except as otherwise disclosed, necessary for a fair presentation of the Company’s results of operations for the interim periods. The results of operations for the nine months ended December 31, 2014 are not necessarily indicative of results to be expected for the full fiscal year.
	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 allowance for doubtful accounts, 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.
	Recent Accounting Pronouncements
	In May 2014, the Financial Accounting Standards Board issued a new standard that will replace existing revenue recognition standards and significantly expand the disclosure requirements for revenue arrangements. 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). 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 applying the new standard on those periods. Under the modified retrospective approach, the new standard would only be applied 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 apply the new standard and still assessing what effect the application 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 the nine months ended December 31, 2014 and through the filing date did not or are not believed by management to have a material impact on the Company's present or historical condensed consolidated financial statements.

Earnings_Per_Share

Earnings Per Share	9 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
EARNINGS PER SHARE	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 the three months ended September 30, 2014, 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 the first, second, and third quarters of fiscal 2015 and 2014. 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:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2014		2013		2014		2013
	Earnings for basic computations (1)	$	52,010	$	45,689	$	186,275	$	183,605
	Weighted-average Class A Common Stock outstanding	146,664,977		140,948,396		144,482,223		138,540,878
	Weighted-average Class B Non-Voting Common Stock outstanding	0		947,259		293,071		1,087,755
	Weighted-average Class C Restricted Common Stock outstanding	0		968,405		504,112		1,042,537
	Total weighted-average common shares outstanding for basic computations	146,664,977		142,864,060		145,279,406		140,671,170
	Earnings for diluted computations (1)	$	52,025	$	45,689	$	186,275	$	183,605
	Dilutive stock options and restricted stock	4,014,108		5,971,223		4,960,430		7,494,020
	Average number of common shares outstanding for diluted computations	150,679,085		148,835,283		150,239,836		148,165,190
	Earnings per common share
	Basic	$	0.35	$	0.32	$	1.28	$	1.31
	Diluted	$	0.35	$	0.31	$	1.24	$	1.24
	(1) During the three months ended December 31, 2014 and 2013, approximately 2.2 million and 1.3 million participating securities were paid dividends totaling $250,000 and $1.5 million, respectively. During the nine months ended December 31, 2014 and 2013, approximately 2.2 million and 1.3 million participating securities were paid dividends totaling $2.9 million and $1.7 million, respectively. For the three months ended December 31, 2014 there were undistributed earnings of $550,000 and $540,000 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 condensed consolidated statements of operations for the three months ended December 31, 2014 and earnings for basic computations, while only the dividends paid comprise the difference in net income for the three months ended December 31, 2013, and nine months ended December 31, 2014 and 2013 as there were no undistributed earnings.
	The EPS calculation for the three and nine months ended December 31, 2014 excludes 100,000 and 302,000 options, respectively, as their impact was anti-dilutive. The EPS calculation for the three and nine months ended December 31, 2013 excludes 101,000 and 104,000 options, respectively, as their impact was anti-dilutive.

Accounts_Receivable_Net

Accounts Receivable, Net	9 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
ACCOUNTS RECEIVABLE, NET	ACCOUNTS RECEIVABLE, NET
	Accounts receivable, net consisted of the following:
		December 31,			March 31,
		2014			2014
	Current
	Accounts receivable–billed	$	378,691		$	395,509
	Accounts receivable–unbilled	466,450			522,685
	Allowance for doubtful accounts	(396		)	(1,457		)
	Accounts receivable, net	844,745			916,737
	Long-term
	Unbilled receivables	18,284			22,877
	Total accounts receivable, net	$	863,029		$	939,614
	Unbilled amounts represent sales for which billings have not been presented to customers at quarter-end or 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 condensed consolidated balance sheets. The Company recognized a provision (benefit) for doubtful accounts (including certain unbilled reserves) of $(8,000) and $(302,000) for the three months ended December 31, 2014 and 2013, respectively, and $(987,000) and $1.2 million for the nine months ended December 31, 2014 and 2013, respectively. Because the Company's accounts receivable are primarily with the U.S. Government and its agencies, the Company does not have material exposure to accounts receivable credit risk.

Accounts_Payable_and_Other_Acc

Accounts Payable and Other Accrued Expenses	9 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
ACCOUNTS PAYABLE AND OTHER ACCRUED EXPENSES	ACCOUNTS PAYABLE AND OTHER ACCRUED EXPENSES
	Accounts payable and other accrued expenses consisted of the following:
		December 31,		March 31,
		2014		2014
	Vendor payables	$	201,438	$	265,079
	Accrued expenses	236,584		223,728
	Total accounts payable and other accrued expenses	$	438,022	$	488,807
	Accrued expenses consisted primarily of the Company’s reserve related to potential cost disallowance in conjunction with government audits. Refer to Note 16 for further discussion of this reserve.

Accrued_Compensation_and_Benef

Accrued Compensation and Benefits	9 Months Ended
	Dec. 31, 2014
Accrued Compensation and Benefits [Abstract]
ACCRUED COMPENSATION AND BENEFITS	ACCRUED COMPENSATION AND BENEFITS
	Accrued compensation and benefits consisted of the following:
		December 31,		March 31,
		2014		2014
	Bonus	$	61,135	$	75,423
	Retirement	71,702		43,405
	Vacation	99,533		117,626
	Stock-based compensation liability (Note 13)	31,738		39,922
	Deferred compensation	—		27,547
	Other	28,076		27,517
	Total accrued compensation and benefits	$	292,184	$	331,440

Debt

Debt	9 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
DEBT	DEBT
	Debt consisted of the following:
		December 31, 2014					March 31, 2014
		Interest		Outstanding			Interest		Outstanding
		Rate		Balance			Rate		Balance
	Term Loan A	2.66	%	$	806,193		2.65	%	$	660,317
	Term Loan B	3.75	%	829,751			3.75	%	998,602
	Total			1,635,944					1,658,919
	Less: Current portion of long-term debt			(51,875		)			(73,688		)
	Long-term debt, net of current portion			$	1,584,069				$	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). As of December 31, 2014, 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. 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. The Company also amended its existing debt covenants to provide for greater operational and financial flexibility.
	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. As of December 31, 2014 and March 31, 2014, there were no amounts outstanding on the revolving credit facility.
	The interest rate on borrowings under Term Loan A is LIBOR plus a 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 a 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.
	The total outstanding debt balance is recorded in the accompanying condensed consolidated balance sheets, net of unamortized discount of $14.5 million and $12.3 million as of December 31, 2014 and March 31, 2014, respectively.
	As of December 31, 2014 and March 31, 2014, the Company was in compliance with all of the Credit Agreement's debt covenants.

Income_Taxes

Income Taxes	9 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES
	The Company’s effective income tax rate was 39.0% and 39.7% for the three months ended December 31, 2014 and 2013, respectively, and 39.1% and 40.2% for the nine months ended December 31, 2014 and 2013, respectively. The three and nine months effective tax rates of 39.0% and 39.1% differ from the statutory rate of 35.0% due to state income taxes and the effect of permanent rate differences, which primarily relate to meals and entertainment.

Other_LongTerm_Liabilities

Other Long-Term Liabilities	9 Months Ended
	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
OTHER LONG-TERM LIABILITIES	OTHER LONG-TERM LIABILITIES
	Other long-term liabilities consisted of the following:
		December 31,		March 31,
		2014		2014
	Income tax reserve	$	57,949	$	57,406
	Deferred rent	24,416		28,527
	Stock-based compensation liability (Note 13)	—		25,966
	Deferred payment obligation	59,679		60,444
	Postretirement benefit obligations	84,917		80,527
	Other	16,936		13,977
	Total other long-term liabilities	$	243,897	$	266,847
	As of December 31, 2014 and March 31, 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 dividends 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 13 for further discussion of the special dividends.

Employee_Benefit_Plans

Employee Benefit Plans	9 Months Ended
	Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract]
EMPLOYEE BENEFIT PLANS	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 was $26.2 million and $36.4 million for the three months ended December 31, 2014 and 2013, respectively, and $81.4 million and $118.7 million for the nine months ended December 31, 2014 and 2013, respectively. The Company-paid contributions were $14.9 million and $19.3 million for the three months ended December 31, 2014 and 2013, respectively, and $53.1 million and $83.7 million for the nine months ended December 31, 2014 and 2013, 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 components of net postretirement medical expense for the Officer Medical Plan were as follows:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2014		2013		2014		2013
	Service cost	$	1,022	$	1,186	$	3,064	$	3,559
	Interest cost	892		921		2,676		2,751
	Net actuarial loss	145		704		436		2,068
	Total postretirement medical expense	$	2,059	$	2,811	$	6,176	$	8,378
	As of December 31, 2014 and March 31, 2014, the unfunded status of the post-retirement medical plan was $80.2 million and $75.9 million, respectively, which is included in other long-term liabilities in the accompanying condensed consolidated balance sheets.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	9 Months Ended
	Dec. 31, 2014
Equity [Abstract]
ACCUMULATED OTHER COMPREHENSIVE LOSS	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:
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Beginning of period	$	(6,465	)	$	(12,254	)	$	(6,636	)	$	(13,787	)
	Other comprehensive income (loss) before reclassifications	—			—			—			747
	Amounts reclassified from accumulated other comprehensive loss	86			419			257			1,205
	Net current-period other comprehensive loss	86			419			257			1,952
	End of period	$	(6,379	)	$	(11,835	)	$	(6,379	)	$	(11,835	)
	The following table presents the reclassifications out of accumulated other comprehensive loss to net income:
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Amortization of net actuarial loss included in net periodic benefit cost (See Note 10)
	Total before tax	$	144		$	704		$	432		$	2,068
	Tax benefit	(58		)	(285		)	(175		)	(863		)
	Net of tax	$	86		$	419		$	257		$	1,205

Stockholders_Equity

Stockholders' Equity	9 Months Ended
	Dec. 31, 2014
Equity [Abstract]
STOCKHOLDERS' EQUITY	STOCKHOLDERS’ EQUITY
	Common Stock
	The common stock shares activity consisted of the following:
		Class A	Class B	Class C	Class E		Treasury
		Common Stock	Non-Voting	Restricted	Special Voting		Stock
			Common Stock	Common Stock	Common Stock
	Balance at March 31, 2013	136,457,444	1,451,600	1,224,319	7,478,522		405,843
	Issuance of common stock	1,047,160	—	—	—		—
	Stock options exercised	5,299,501	—	—	-3,053,708		—
	Share exchange	1,157,968	-869,520	-288,448	—		—
	Repurchase of common stock (1)	—	—	—	—		203,782
	Balance at March 31, 2014	143,962,073	582,080	935,871	4,424,814		609,625
	Issuance of common stock	1,315,400	—	—	—		—
	Stock options exercised	3,099,729	—	—	(2,573,225	)	—
	Share exchange (3)	1,517,951	-582,080	-935,871	—		—
	Repurchase of common stock (2)	—	—	—	—		1,377,001
	Balance at December 31, 2014	149,895,153	—	—	1,851,589		1,986,626
	-1	Reflects shares repurchased on June 30, 2013 to cover the minimum statutory withholding taxes on restricted stock awards that vested on June 30, 2013 and shares repurchased on multiple dates to cover the minimum statutory withholding taxes on accelerated restricted stock vesting for departing officers.
	-2	On November 5, 2014, the Company entered into an agreement with an affiliate of The Carlyle Group to repurchase 1,000,000 shares of the Company's Class A Common Stock. The shares were repurchased at a price of $25.10 per share in a private non-underwritten transaction. The repurchase of common stock above also reflects shares repurchased on June 30, 2014 to cover the minimum statutory withholding taxes on restricted stock awards that vested on June 30, 2014, shares repurchased on September 12, 2014 to cover the minimum statutory withholding taxes on rollover stock options exercised on September 12, 2014 and shares repurchased on multiple dates to cover the minimum statutory withholding taxes on accelerated restricted stock vesting for departing officers.
	-3	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.
	For the quarterly offering period that closed on December 31, 2014, 48,029 Class A Common Stock shares were purchased by employees under the Company's Employee Stock Purchase Plan, or ESPP. Since the program's inception, 1,460,880 shares have been purchased by employees.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION
	The following table summarizes stock-based compensation expense recognized in the condensed consolidated statements of operations:
		Three Months Ended					Nine Months Ended
		December 31,					December 31,
		2014			2013		2014		2013
	Cost of revenue	$	2,303		$	1,322	$	6,601	$	3,982
	General and administrative expenses	4,764			3,456		13,353		10,137
	Total	$	7,067		$	4,778	$	19,954	$	14,119
	The following table summarizes the total stock-based compensation expense recognized in the condensed consolidated statements of operations by the following types of equity awards:
		Three Months Ended					Nine Months Ended
		December 31,					December 31,
		2014			2013		2014		2013
	Equity Incentive Plan Options	$	1,241		$	1,790	$	4,022	$	4,741
	Class A Restricted Common Stock	5,826			2,988		15,932		8,741
	Rollover Options	—			—		—		578
	Class C Restricted Stock	—			—		—		59
	Total	$	7,067		$	4,778	$	19,954	$	14,119
	As of December 31, 2014, there was $34.6 million of total unrecognized compensation cost related to unvested stock-based compensation agreements. The unrecognized compensation cost as of December 31, 2014 is expected to be amortized over 4.25 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 table summarizes the unrecognized compensation cost and the weighted average period the cost is expected to be amortized.
			December 31, 2014
			Unrecognized Compensation Cost			Weighted Average Remaining Period to be Recognized
	Equity Incentive Plan Options		$	5,862		3.02
	Class A Restricted Common Stock		28,723			2.9
	Total		$	34,585
	Equity Incentive Plan
	On October 29, 2014, 34,766 options were granted under the EIP. The estimated fair value of the grant was $6.04, resulting in a total fair value of $0.2 million. The fair value of our Class A Common Stock on October 29, 2014 at the time of the option grant was $25.19.
	On November 3, 2014, 65,310 options were granted under the EIP. The estimated fair value of the grant was $6.43, resulting in a total fair value of $0.4 million. The fair value of our Class A Common Stock on November 3, 2014 at the time of the option grant was $26.50.
	As of December 31, 2014, there were 6,679,333 EIP options outstanding, of which 2,432,594 were unvested.
	Grants of Class A Restricted Common Stock and Restricted Stock Units
	There were no grants of Class A Restricted Stock or Restricted Stock Units during the three months ended December 31, 2014.
	Special Dividends
	The Board of Directors, as the Administrator of the Officers' Rollover Stock Plan and the EIP, has discretion in how to effect the required adjustment to keep option holders whole in the event of a distribution of dividends that triggers 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 respective option's stock compensation expense is recorded in the condensed consolidated statement of operations. This 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.
	Total compensation expense recorded in conjunction with the payment of the dividend equivalents to EIP options holders for the three months ended December 31, 2014 was $0.1 million. Future compensation expense related to the payment of the dividend equivalents to holders of EIP options not yet recognized in the statement of operations is $0.6 million and is expected to be recognized over 2.50 years.
	As of December 31, 2014 and March 31, 2014, the Company calculated a total recorded and unrecorded stock-based compensation liability of $36.3 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. The recorded stock-based compensation liability is as follows:
		December 31, 2014							March 31, 2014
		EIP Options			Rollover Options		Total		EIP Options		Rollover Options		Total
	Current portion of liability (1)	$	3,703		$	28,035	$	31,738	$	3,675	$	36,247	$	39,922
	Long-term portion of liability (2)	—			—		—		—		25,966		25,966
		$	3,703		$	28,035	$	31,738	$	3,675	$	62,213	$	65,888
	(1)     Included in accrued compensation and benefits (Note 6).
	(2)     Included in other long-term liabilities (Note 9).
	As of December 31, 2014, $4.6 million related to EIP options will be recorded as liabilities as the options vest over the next 4.25 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 December 31, 2014 or March 31, 2014, as the Rollover options are fully vested.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS
	The accounting standard 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 following tables set forth by level represent the fair value of the Company's cash and cash equivalents as of December 31, 2014.
		Fair Value of Cash and Cash Equivalents as of December 31, 2014
		Level 1	Level 2	Level 3	Total
	Cash and cash equivalents	$48,005	—	—	$48,005
	Money market funds (1)	—	$149,438	—	$149,438
	Total cash and cash equivalents	$48,005	$149,438	—	$197,443
	The following table set forth by levels represents the fair value of the Company's cash and cash equivalents as of March 31, 2014.
		Fair Value of Cash and Cash Equivalents
		as of March 31, 2014
		Level 1	Level 2	Level 3	Total
	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 two 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. Depending on our short-term liquidity needs, we make regular transfers between money market funds and other cash equivalents.
	The fair value of the Company's trade accounts receivable and accounts payable approximates its carrying value at December 31, 2014 and March 31, 2014 because of the short-term nature of these instruments. The fair value of the Company's debt instruments approximates its carrying value at December 31, 2014 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).
	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 December 31, 2014 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 third quarter of fiscal 2015. Any future changes in the fair value of this contingent consideration liability will be recognized in earnings during the applicable period.

RelatedParty_Transactions

Related-Party Transactions	9 Months Ended
	Dec. 31, 2014
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 12 above. The shares were repurchased at a price of $25.10 per share as part of a private non-underwritten transaction. 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 the three months ended December 31, 2014 were $312,000 and $233,000, respectively, and $961,000 and $719,000 for the nine months ended December 31, 2014, respectively. Revenue and cost associated with these related parties for the three months ended December 31, 2013 were $70,000 and $61,000, respectively, and $237,000 and $201,000 for the nine months ended December 31, 2013, 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 December 31, 2014 and March 31, 2014, respectively. The participation by such investment vehicles in the syndication of the Company's debt 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. On June 7, 2012, TC Group assigned all of its right, title and interest in, and obligations under, the management agreement to Carlyle Investment Management L.L.C., or Carlyle Investment Management. In accordance with the Management Agreement, Carlyle Investment Management provides the Company with advisory, consulting, and other services and the Company pays Carlyle Investment Management an aggregate annual fee of $1.0 million, plus expenses. For the three months ended December 31, 2014 and 2013, the Company incurred $250,000 in advisory fees. For the nine months ended December 31, 2014 and 2013, the Company incurred $750,000 in advisory fees in each period.

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES
	Leases
	As a result of the July 2008 acquisition, as described in the Company’s Annual Report, 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 December 31, 2014 or March 31, 2014. The maximum potential amount of undiscounted future payments is $10.6 million, and the leases expire in November 2015 and 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.
	Government Contracting Matters
	For the three and nine months ended December 31, 2014, approximately 97% and 98%, respectively, of the Company’s revenue was generated from contracts with U.S. government agencies or other U.S. government contractors, and approximately 98% for the three and nine months ended December 31, 2013. 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 December 31, 2014 and March 31, 2014, the Company has recorded a liability of approximately $200.0 million and $189.8 million, respectively, for its current best estimate of amounts to be refunded to customers for potential adjustments from such 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 December 31, 2014, there are no material amounts accrued in the condensed consolidated financial statements related to these proceedings.
	Six former officers and stockholders who had departed the firm prior to July 31, 2008, the date on which we became majority owned by Carlyle and certain of its affiliated investment funds, as described in the Company’s Annual Report, or 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 (three of which were amended on July 2, 2010 and then further amended into one consolidated complaint on September 7, 2010) against the Company and certain of the Company’s current and former directors and officers. 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. 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 five remaining suits are pending in the United States District Court for the Southern District of New York. As of December 31, 2014 and March 31, 2014, the aggregate alleged damages sought in the six remaining suits 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.

Subsequent_Events_Subsequent_E

Subsequent Events Subsequent Events	9 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS
	On January 27, 2015, the Board of Directors approved an increase to our share repurchase authorization from $30.0 million to up to $180.0 million.

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	9 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Reconciliation of the income used to compute basic and diluted EPS	A reconciliation of the income used to compute basic and diluted EPS for the periods presented are as follows:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2014		2013		2014		2013
	Earnings for basic computations (1)	$	52,010	$	45,689	$	186,275	$	183,605
	Weighted-average Class A Common Stock outstanding	146,664,977		140,948,396		144,482,223		138,540,878
	Weighted-average Class B Non-Voting Common Stock outstanding	0		947,259		293,071		1,087,755
	Weighted-average Class C Restricted Common Stock outstanding	0		968,405		504,112		1,042,537
	Total weighted-average common shares outstanding for basic computations	146,664,977		142,864,060		145,279,406		140,671,170
	Earnings for diluted computations (1)	$	52,025	$	45,689	$	186,275	$	183,605
	Dilutive stock options and restricted stock	4,014,108		5,971,223		4,960,430		7,494,020
	Average number of common shares outstanding for diluted computations	150,679,085		148,835,283		150,239,836		148,165,190
	Earnings per common share
	Basic	$	0.35	$	0.32	$	1.28	$	1.31
	Diluted	$	0.35	$	0.31	$	1.24	$	1.24
	(1) During the three months ended December 31, 2014 and 2013, approximately 2.2 million and 1.3 million participating securities were paid dividends totaling $250,000 and $1.5 million, respectively. During the nine months ended December 31, 2014 and 2013, approximately 2.2 million and 1.3 million participating securities were paid dividends totaling $2.9 million and $1.7 million, respectively. For the three months ended December 31, 2014 there were undistributed earnings of $550,000 and $540,000 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 condensed consolidated statements of operations for the three months ended December 31, 2014 and earnings for basic computations, while only the dividends paid comprise the difference in net income for the three months ended December 31, 2013, and nine months ended December 31, 2014 and 2013 as there were no undistributed earnings

Accounts_Receivable_Net_Accoun

Accounts Receivable, Net Account Receivable, Net (Tables)	9 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Accounts receivable, net	Accounts receivable, net consisted of the following:
		December 31,			March 31,
		2014			2014
	Current
	Accounts receivable–billed	$	378,691		$	395,509
	Accounts receivable–unbilled	466,450			522,685
	Allowance for doubtful accounts	(396		)	(1,457		)
	Accounts receivable, net	844,745			916,737
	Long-term
	Unbilled receivables	18,284			22,877
	Total accounts receivable, net	$	863,029		$	939,614

Accounts_Payable_and_Other_Acc1

Accounts Payable and Other Accrued Expenses (Tables)	9 Months Ended
	Dec. 31, 2014
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]	Accounts payable and other accrued expenses consisted of the following:
		December 31,		March 31,
		2014		2014
	Vendor payables	$	201,438	$	265,079
	Accrued expenses	236,584		223,728
	Total accounts payable and other accrued expenses	$	438,022	$	488,807

Accrued_Compensation_and_Benef1

Accrued Compensation and Benefits (Tables)	9 Months Ended
	Dec. 31, 2014
Accrued Compensation and Benefits [Abstract]
Accrued compensation and benefits	Accrued compensation and benefits consisted of the following:
		December 31,		March 31,
		2014		2014
	Bonus	$	61,135	$	75,423
	Retirement	71,702		43,405
	Vacation	99,533		117,626
	Stock-based compensation liability (Note 13)	31,738		39,922
	Deferred compensation	—		27,547
	Other	28,076		27,517
	Total accrued compensation and benefits	$	292,184	$	331,440

Debt_Tables

Debt (Tables)	9 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Debt	Debt consisted of the following:
		December 31, 2014					March 31, 2014
		Interest		Outstanding			Interest		Outstanding
		Rate		Balance			Rate		Balance
	Term Loan A	2.66	%	$	806,193		2.65	%	$	660,317
	Term Loan B	3.75	%	829,751			3.75	%	998,602
	Total			1,635,944					1,658,919
	Less: Current portion of long-term debt			(51,875		)			(73,688		)
	Long-term debt, net of current portion			$	1,584,069				$	1,585,231

Other_LongTerm_Liabilities_Tab

Other Long-Term Liabilities (Tables)	9 Months Ended
	Dec. 31, 2014
Other Liabilities Disclosure [Abstract]
Other Long-Term Liabilities	Other long-term liabilities consisted of the following:
		December 31,		March 31,
		2014		2014
	Income tax reserve	$	57,949	$	57,406
	Deferred rent	24,416		28,527
	Stock-based compensation liability (Note 13)	—		25,966
	Deferred payment obligation	59,679		60,444
	Postretirement benefit obligations	84,917		80,527
	Other	16,936		13,977
	Total other long-term liabilities	$	243,897	$	266,847

Employee_Benefit_Plans_Tables

Employee Benefit Plans (Tables)	9 Months Ended
	Dec. 31, 2014
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:
		Three Months Ended				Nine Months Ended
		December 31,				December 31,
		2014		2013		2014		2013
	Service cost	$	1,022	$	1,186	$	3,064	$	3,559
	Interest cost	892		921		2,676		2,751
	Net actuarial loss	145		704		436		2,068
	Total postretirement medical expense	$	2,059	$	2,811	$	6,176	$	8,378

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Dec. 31, 2014
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:
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Beginning of period	$	(6,465	)	$	(12,254	)	$	(6,636	)	$	(13,787	)
	Other comprehensive income (loss) before reclassifications	—			—			—			747
	Amounts reclassified from accumulated other comprehensive loss	86			419			257			1,205
	Net current-period other comprehensive loss	86			419			257			1,952
	End of period	$	(6,379	)	$	(11,835	)	$	(6,379	)	$	(11,835	)
Reclassification out of accumulated other comprehensive loss to net income	The following table presents the reclassifications out of accumulated other comprehensive loss to net income:
		Three Months Ended						Nine Months Ended
		December 31,						December 31,
		2014			2013			2014			2013
	Amortization of net actuarial loss included in net periodic benefit cost (See Note 10)
	Total before tax	$	144		$	704		$	432		$	2,068
	Tax benefit	(58		)	(285		)	(175		)	(863		)
	Net of tax	$	86		$	419		$	257		$	1,205

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	9 Months Ended
	Dec. 31, 2014
Equity [Abstract]
Common stock shares activity	The common stock shares activity consisted of the following:
		Class A	Class B	Class C	Class E		Treasury
		Common Stock	Non-Voting	Restricted	Special Voting		Stock
			Common Stock	Common Stock	Common Stock
	Balance at March 31, 2013	136,457,444	1,451,600	1,224,319	7,478,522		405,843
	Issuance of common stock	1,047,160	—	—	—		—
	Stock options exercised	5,299,501	—	—	-3,053,708		—
	Share exchange	1,157,968	-869,520	-288,448	—		—
	Repurchase of common stock (1)	—	—	—	—		203,782
	Balance at March 31, 2014	143,962,073	582,080	935,871	4,424,814		609,625
	Issuance of common stock	1,315,400	—	—	—		—
	Stock options exercised	3,099,729	—	—	(2,573,225	)	—
	Share exchange (3)	1,517,951	-582,080	-935,871	—		—
	Repurchase of common stock (2)	—	—	—	—		1,377,001
	Balance at December 31, 2014	149,895,153	—	—	1,851,589		1,986,626
	-1	Reflects shares repurchased on June 30, 2013 to cover the minimum statutory withholding taxes on restricted stock awards that vested on June 30, 2013 and shares repurchased on multiple dates to cover the minimum statutory withholding taxes on accelerated restricted stock vesting for departing officers.
	-2	On November 5, 2014, the Company entered into an agreement with an affiliate of The Carlyle Group to repurchase 1,000,000 shares of the Company's Class A Common Stock. The shares were repurchased at a price of $25.10 per share in a private non-underwritten transaction. The repurchase of common stock above also reflects shares repurchased on June 30, 2014 to cover the minimum statutory withholding taxes on restricted stock awards that vested on June 30, 2014, shares repurchased on September 12, 2014 to cover the minimum statutory withholding taxes on rollover stock options exercised on September 12, 2014 and shares repurchased on multiple dates to cover the minimum statutory withholding taxes on accelerated restricted stock vesting for departing officers.
	-3	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.

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based compensation expense recognized in the condensed consolidated statements of operations	The following table summarizes stock-based compensation expense recognized in the condensed consolidated statements of operations:
		Three Months Ended					Nine Months Ended
		December 31,					December 31,
		2014			2013		2014		2013
	Cost of revenue	$	2,303		$	1,322	$	6,601	$	3,982
	General and administrative expenses	4,764			3,456		13,353		10,137
	Total	$	7,067		$	4,778	$	19,954	$	14,119
	The following table summarizes the total stock-based compensation expense recognized in the condensed consolidated statements of operations by the following types of equity awards:
		Three Months Ended					Nine Months Ended
		December 31,					December 31,
		2014			2013		2014		2013
	Equity Incentive Plan Options	$	1,241		$	1,790	$	4,022	$	4,741
	Class A Restricted Common Stock	5,826			2,988		15,932		8,741
	Rollover Options	—			—		—		578
	Class C Restricted Stock	—			—		—		59
	Total	$	7,067		$	4,778	$	19,954	$	14,119
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 table summarizes the unrecognized compensation cost and the weighted average period the cost is expected to be amortized.
			December 31, 2014
			Unrecognized Compensation Cost			Weighted Average Remaining Period to be Recognized
	Equity Incentive Plan Options		$	5,862		3.02
	Class A Restricted Common Stock		28,723			2.9
	Total		$	34,585
Recorded stock-based compensation liabilities	As of December 31, 2014 and March 31, 2014, the Company calculated a total recorded and unrecorded stock-based compensation liability of $36.3 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. The recorded stock-based compensation liability is as follows:
		December 31, 2014							March 31, 2014
		EIP Options			Rollover Options		Total		EIP Options		Rollover Options		Total
	Current portion of liability (1)	$	3,703		$	28,035	$	31,738	$	3,675	$	36,247	$	39,922
	Long-term portion of liability (2)	—			—		—		—		25,966		25,966
		$	3,703		$	28,035	$	31,738	$	3,675	$	62,213	$	65,888
	(1)     Included in accrued compensation and benefits (Note 6).
	(2)     Included in other long-term liabilities (Note 9).

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair value of cash and cash equivalents	The following tables set forth by level represent the fair value of the Company's cash and cash equivalents as of December 31, 2014.
		Fair Value of Cash and Cash Equivalents as of December 31, 2014
		Level 1	Level 2	Level 3	Total
	Cash and cash equivalents	$48,005	—	—	$48,005
	Money market funds (1)	—	$149,438	—	$149,438
	Total cash and cash equivalents	$48,005	$149,438	—	$197,443
	The following table set forth by levels represents the fair value of the Company's cash and cash equivalents as of March 31, 2014.
		Fair Value of Cash and Cash Equivalents
		as of March 31, 2014
		Level 1	Level 2	Level 3	Total
	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 two 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. Depending on our short-term liquidity needs, we make regular transfers between money market funds and other cash equivalents.

Business_Overview_Business_Ove

Business Overview Business Overview (Details)	Dec. 31, 2014
	employees
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of employees	22,300

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Earnings for basic computations	$52,010,000	$45,689,000	$186,275,000	$183,605,000
Weighted-average common shares outstanding for basic computations	146,664,977	142,864,060	145,279,406	140,671,170
Earnings for diluted computations	52,025,000	45,689,000	186,275,000	183,605,000
Dilutive stock options and restricted stock	4,014,108	5,971,223	4,960,430	7,494,020
Average number of common shares outstanding for diluted computations	150,679,085	148,835,283	150,239,836	148,165,190
Earnings per common share, Basic	$0.35	$0.32	$1.28	$1.31
Earnings per common share, Diluted	$0.35	$0.31	$1.24	$1.24
Unvested shares, cash dividends paid			47,006,000	52,065,000
Restricted stock
Earnings Per Share, Basic, 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	2,200,000	1,300,000
Unvested shares, cash dividends paid	300,000	1,500,000	2,900,000	1,700,000
Undistributed earnings allocated to participating securities, basic	550,000	0	0	0
Undistributed earnings allocated to participating securities, diluted	$540,000	$0	$0	$0
Stock options
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive options excluded from the computation of EPS	100,000	101,000	302,000	104,000
Common stock, Class A
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted-average common shares outstanding for basic computations	146,664,977	140,948,396	144,482,223	138,540,878
Non-voting common stock, Class B
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted-average common shares outstanding for basic computations	0	947,259	293,071	1,087,755
Restricted common stock, Class C
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Weighted-average common shares outstanding for basic computations	0	968,405	504,112	1,042,537

Accounts_Receivable_Net_Acount

Accounts Receivable, Net Acounts Receivable, Net (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
Current
Accounts receivable–billed	$378,691		$378,691		$395,509
Accounts receivable–unbilled	466,450		466,450		522,685
Allowance for doubtful accounts	-396		-396		-1,457
Accounts receivable, net	844,745		844,745		916,737
Long-term
Unbilled receivables	18,284		18,284		22,877
Total accounts receivable, net	863,029		863,029		939,614
Provision for doubtful accounts	($8)	($302)	($987)	$1,200

Accounts_Payable_and_Other_Acc2

Accounts Payable and Other Accrued Expenses (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Payables and Accruals [Abstract]
Vendor payables	$201,438	$265,079
Accrued expenses	236,584	223,728
Total accounts payable and other accrued expenses	$438,022	$488,807

Accrued_Compensation_and_Benef2

Accrued Compensation and Benefits (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Accrued Compensation and Benefits [Abstract]
Bonus	$61,135	$75,423
Retirement	71,702	43,405
Vacation	99,533	117,626
Stock-based compensation liability	31,738	39,922
Deferred compensation	0	27,547
Other	28,076	27,517
Total accrued compensation and benefits	$292,184	$331,440

Debt_Details

Debt (Details) (USD $)	9 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	7-May-14	Mar. 31, 2014
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt	$1,635,944,000			$1,658,919,000
Less: Current portion of long-term debt	-51,875,000			-73,688,000
Long-term debt, net of current portion	1,584,069,000			1,585,231,000
Repayment of debt	-219,188,000	-289,406,000
Long-term debt, unamortized discount	14,500,000			12,300,000
Secured Debt | Term Loan A
Long-term Debt, Current and Noncurrent [Abstract]
Interest rate	2.66%			2.65%
Long-term debt	806,193,000			660,317,000
Term loan, face amount	830,000,000
Quarterly periodic payment percentage, principal			1.25%
Quarterly principal periodic payment percentage, year two			1.88%
Quarterly principal periodic payment percentage, year three			2.50%
Quarterly principal periodic payment percentage, year four			3.13%
Quarterly principal periodic payment percentage, year five			13.00%
Secured Debt | Term Loan A | Minimum
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt, basis spread on variable rate			2.00%
Secured Debt | Term Loan A | Maximum
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt, basis spread on variable rate			2.75%
Secured Debt | Term Loan A | London Interbank Offered Rate (LIBOR)
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt, basis spread on variable rate			2.50%
Secured Debt | Term Loan B
Long-term Debt, Current and Noncurrent [Abstract]
Interest rate	3.75%			3.75%
Long-term debt	829,751,000			998,602,000
Term loan, face amount	841,200,000
Repayment of debt			-168,400,000
Secured Debt | Term Loan B | Minimum
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt, basis spread on variable rate			0.75%
Secured Debt | Term Loan B | London Interbank Offered Rate (LIBOR)
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt, basis spread on variable rate			3.00%
Secured Debt | Term Loan B | London Interbank Offered Rate (LIBOR) | Maximum
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt, basis spread on variable rate			3.00%
Secured Debt | Term Loan B | Alternative Base Rate (ABR) | Minimum
Long-term Debt, Current and Noncurrent [Abstract]
Long-term debt, basis spread on variable rate			2.00%
Revolving Credit Facility
Long-term Debt, Current and Noncurrent [Abstract]
Revolving credit facility, maximum borrowing capacity	500,000,000
Revolving credit facility, amount outstanding	0			0
Letter of Credit
Long-term Debt, Current and Noncurrent [Abstract]
Revolving credit facility, maximum borrowing capacity	$100,000,000

Income_Taxes_Details

Income Taxes (Details)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Effective income tax rate	39.00%	39.70%	39.10%	40.20%
Statutory rate	35.00%		35.00%

Other_LongTerm_Liabilities_Det

Other Long-Term Liabilities (Details) (USD $)	Dec. 31, 2014	Mar. 31, 2014
Other Liabilities Disclosure [Abstract]
Income tax reserve	$57,949,000	$57,406,000
Deferred rent	24,416,000	28,527,000
Stock-based compensation	0	25,966,000
Deferred payment obligation	59,679,000	60,444,000
Postretirement benefit obligations	84,917,000	80,527,000
Other	16,936,000	13,977,000
Total other long-term liabilities	243,897,000	266,847,000
Stock-based compensation liability, current and noncurrent	31,700,000	65,900,000
Stock-based compensation liability, current	$31,738,000	$39,922,000

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	3 Months Ended		9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Employer Matching Contribution, Percent of Match			6.00%
Employees’ Capital Accumulation Plan, Total expense recognized	$26,200,000	$36,400,000	$81,400,000	$118,700,000
Employees’ Capital Accumulation Plan, Company-paid contributions	14,900,000	19,300,000	53,100,000	83,700,000
Officer Medical Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,022,000	1,186,000	3,064,000	3,559,000
Interest cost	892,000	921,000	2,676,000	2,751,000
Net actuarial loss	145,000	704,000	436,000	2,068,000
Total benefit cost	2,059,000	2,811,000	6,176,000	8,378,000
Defined benefit plan, unfunded status of plan	$80,200,000		$80,200,000		$75,900,000

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jun. 30, 2013
Equity [Abstract]
Beginning of year	($6,465)		($6,636)	($13,787)	($12,254)
Other comprehensive income (loss) before reclassifications	0	0	0	747
Amounts reclassified from accumulated other comprehensive loss	86	419	257	1,205
Net current-period other comprehensive loss	86	419	257	1,952
End of year	($6,379)	($11,835)	($6,379)	($11,835)	($12,254)

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Loss (Reclassifications out of Accumulated Other Comprehensive Loss to Net Income) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Tax benefit	($33,809)	($31,014)	($121,432)	($124,701)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	144	704	432	2,068
Tax benefit	-58	-285	-175	-863
Net of tax	$86	$419	$257	$1,205

Stockholders_Equity_Common_Sto

Stockholders' Equity (Common Stock Shares Activity) (Details) (USD $)	0 Months Ended	9 Months Ended	12 Months Ended
	Nov. 05, 2014	Dec. 31, 2014	Mar. 31, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury stock, shares, beginning of period		609,625	405,843
Repurchase of common stock	1,000,000	1,377,001	203,782
Treasury stock, shares, end of period		1,986,626	609,625
Repurchase of common stock, price per share	$25.10
Common stock, Class A
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares issued, beginning of period		143,962,073	136,457,444
Issuance of common stock		1,315,400	1,047,160
Stock options exercised		3,099,729	5,299,501
Share exchange		1,517,951	1,157,968
Common stock, shares issued, end of period		149,895,153	143,962,073
Non-voting common stock, Class B
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares issued, beginning of period		582,080	1,451,600
Share exchange		-582,080	-869,520
Common stock, shares issued, end of period		0	582,080
Restricted common stock, Class C
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares issued, beginning of period		935,871	1,224,319
Share exchange		-935,871	-288,448
Common stock, shares issued, end of period		0	935,871
Special voting common stock, Class E
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, shares issued, beginning of period		4,424,814	7,478,522
Stock options exercised		-2,573,225	-3,053,708
Common stock, shares issued, end of period		1,851,589	4,424,814

Stockholders_Equity_Employee_S

Stockholders' Equity (Employee Stock Purchase Plan) (Details) (USD $)	9 Months Ended	50 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Repurchase Program, Authorized Amount	30	30
Employee Stock Purchase Plan | Common stock, Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased by employees under the employee stock purchase plan	48,029	1,460,880

StockBased_Compensation_Stockb

Stock-Based Compensation (Stock-based Compensation Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$7,067	$4,778	$19,954	$14,119
Stock options | EIP
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,241	1,790	4,022	4,741
Stock options | Rollover Options
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	0	0	0	578
Restricted stock | Annual Incentive Plan | Common stock, Class A
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	5,826	2,988	15,932	8,741
Restricted stock | Rollover Options | Restricted common stock, Class C
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	0	0	0	59
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,303	1,322	6,601	3,982
General and administrative expenses
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$4,764	$3,456	$13,353	$10,137

StockBased_Compensation_Unreco

Stock-Based Compensation (Unrecognized Compensation) (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock-based compensation agreements	$34,585
Unrecognized compensation cost, amortization period	4 years 3 months
EIP | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested stock-based compensation agreements	5,862
Unrecognized compensation cost, amortization period	3 years 0 months 9 days
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	$28,723
Unrecognized compensation cost, amortization period	2 years 10 months 23 days

StockBased_Compensation_Stock_

Stock-Based Compensation (Stock Plans) (Details) (USD $)	0 Months Ended		3 Months Ended
In Millions, except Share data, unless otherwise specified	Nov. 03, 2014	Oct. 29, 2014	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price	$26.50	$25.19
Stock options | EIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	65,310	34,766
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$6.43	$6.04
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants In Period, Fair Value	$0.40	$0.20
Stock options outstanding			6,679,333
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number			2,432,594
Common stock, Class A | Restricted stock | Annual Incentive Plan
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			0
Common stock, Class A | Restricted Stock Units (RSUs) | Annual Incentive Plan
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			0

StockBased_Compensation_Record

Stock-Based Compensation (Recorded and Unrecorded Stock-based Compensation Liability) (Details) (USD $)	3 Months Ended	9 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation liability, current	$31,738,000	$31,738,000	$39,922,000
Stock-based compensation liability, noncurrent	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 3 months
Special Cash Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Recorded and unrecorded stock-based compensation liability, current and noncurrent	36,300,000	36,300,000	73,100,000
Stock options | EIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost, amortization period		3 years 0 months 9 days
Stock options | Special Cash Dividend
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation liability, current	31,738,000	31,738,000	39,922,000
Stock-based compensation liability, noncurrent	0	0	25,966,000
Stock-based compensation liability, current and noncurrent	31,738,000	31,738,000	65,888,000
Stock options | Special Cash Dividend | EIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement, plan modification, incremental compensation cost recognized in period	100,000
Share-based compensation arrangement, plan modification, incremental compensation cost, deferred	600,000	600,000
Share-based compensation arrangement, plan modification, incremental compensation cost, deferred, recognition period		2 years 6 months
Stock-based compensation liability, current	3,703,000	3,703,000	3,675,000
Stock-based compensation liability, noncurrent	0	0	0
Stock-based compensation liability, current and noncurrent	3,703,000	3,703,000	3,675,000
Unrecorded stock-based compensation liability, current and noncurrent	4,600,000	4,600,000	7,200,000
Unrecognized compensation cost, amortization period		4 years 3 months
Stock options | Special Cash Dividend | Rollover Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation liability, current	28,035,000	28,035,000	36,247,000
Stock-based compensation liability, noncurrent	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

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	3 Months Ended
	Dec. 31, 2014	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	$9,000,000
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	197,443,000	259,994,000
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	48,005,000	37,886,000
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	149,438,000	222,108,000
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	48,005,000	37,886,000
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	48,005,000	37,886,000
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cash and cash equivalents	149,438,000	222,108,000
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	149,438,000	222,108,000
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	$4,500,000

RelatedParty_Transactions_Deta

Related-Party Transactions (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 05, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Jul. 31, 2008
Related Party Transactions [Abstract]
Repurchase of common stock	1,000,000			1,377,001		203,782
Repurchase of common stock, price per share	$25.10
Revenue associated with related parties		$312,000	$70,000	$961,000	$237,000
Cost associated with related parties		233,000	61,000	719,000	201,000
Lender syndicate, outstanding debt amount		47,000,000		47,000,000		55,500,000
Management agreement, annual fee							1,000,000
Management agreement, advisory fees		$250,000	$250,000	$750,000	$750,000

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Jul. 31, 2008	Mar. 31, 2014
					leases
Commitments and Contingencies Disclosure [Abstract]
Number of facility leases assigned to Booz & Co					9
Number of facility leases assigned to Booz & Co., outstanding	2		2
Maximum potential amount of undiscounted future lease payments	10.6		10.6
Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Liability for reductions and/or penalties from U.S Governement audits	200		200			$189.80
Contracts with U.S. government agencies or other U.S. government contractors
Concentration Risk [Line Items]
Concentration risk, percentage	97.00%	98.00%	98.00%	98.00%

Commitments_and_Contingencies_1

Commitments and Contingencies (Litigation) (Details) (USD $)	9 Months Ended	12 Months Ended	18 Months Ended	57 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014	Dec. 15, 2009	Dec. 31, 2014	Jul. 02, 2010
			plaintiffs	claims	claims
			claims
Legal proceedings and investigations arising in the ordinary course of business | Maximum
Loss Contingencies [Line Items]
Loss contingencies, damages sought, value	$40
Former stockholder litigation
Loss Contingencies [Line Items]
Loss contingencies, number of plaintiffs			6
Loss contingencies, new claims filed, number			9
Loss contingencies, claims amended, number					3
Loss contingencies, claims dismissed, number				3
Loss contingencies, damages sought, value	348.7	348.7
Former stockholder litigation | United States District Court for the Southern District of New York
Loss Contingencies [Line Items]
Loss contingencies, pending claims, number	5			5
Former stockholder litigation | United States Court of Appeals for the Ninth Circuit
Loss Contingencies [Line Items]
Loss contingencies, pending claims, number	1			1
Former stockholder litigation | RICO
Loss Contingencies [Line Items]
Loss contingencies, damages sought, value	$291.50	$291.50

Subsequent_Events_Subsequent_E1

Subsequent Events Subsequent Events (Details) (USD $)	Dec. 31, 2014	Jan. 27, 2015
In Millions, unless otherwise specified
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount	$30
Subsequent Event
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount		$180