CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands	12 Months Ended
Mar. 31, 2011	Mar. 31, 2010	Mar. 31, 2009
Operating Activities
Net income	$ 313,711	$ 278,944	$ 140,953
Adjustments to net income to arrive at cash provided by operating activities:
Depreciation	100,041	93,739	80,137
Amortization of intangible assets	11,145	6,091	5,616
Amortization of debt discount	17,168	19,867	23,921
Amortization of deferred financing costs	5,157	2,839	2,857
Trade name and goodwill impairments		38,008	108,500
Other asset impairment		11,405	7,920
Deferred income taxes	23,018	(3,338)	108,353
Loss on disposal of property	2,281	5,756	1,110
Share-based plans expense	9,740	16,664	18,952
Excess tax benefits from share-based plans	(540)	(1,691)	(3,287)
Changes in assets and liabilities:
Net receivables	(153,723)	(81,279)	(94,239)
Net inventories	(6,400)	57	(15,610)
Accounts payable	20,065	(16,221)	64,345
Contract advances and allowances	15,108	20,739	4,456
Accrued compensation	(53,616)	800	15,312
Accrued income taxes	(40,164)	59,154	(70,019)
Pension and other postretirement benefits	86,955	(241,560)	23,306
Other assets and liabilities	71,124	(16,312)	2,404
Cash provided by operating activities	421,070	193,662	424,987
Investing Activities
Capital expenditures	(130,201)	(143,472)	(111,481)
Acquisition of business, net of cash acquired	(172,251)	5,002	(75,615)
Proceeds from the disposition of property, plant, and equipment	3,001	5,845	569
Cash used for investing activities	(299,451)	(132,625)	(186,527)
Financing Activities
Payments made on bank debt	(13,438)	(13,916)
Payments made to extinguish debt	(537,576)		(618)
Proceeds from issuance of long-term debt	750,000
Payments made for debt issue costs	(19,883)		(5)
Purchase of treasury shares			(31,609)
Dividends paid	(6,700)
Proceeds from employee stock compensation plans	13,819	8,381	7,412
Excess tax benefits from share-based plans	540	1,691	3,287
Cash provided by (used for) financing activities	186,762	(3,844)	(21,533)
Increase in cash and cash equivalents	308,381	57,193	216,927
Cash and cash equivalents at beginning of year	393,893	336,700	119,773
Cash and cash equivalents at end of year	702,274	393,893	336,700
Noncash investing activity:
Capital expenditures included in accounts payable	(14,118)	(15,621)	(20,538)
Capital expenditures financed through operating leases			$ 9,722

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The component of interest income or expense representing the periodic increase in or charge against earnings to reflect amortization of debt discounts and premiums over the life of the related debt instruments, which are liabilities of the entity.

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.

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Designated to encapsulate the entire footnote disclosure that gives information on the supplemental cash flow activities for noncash (or part noncash) transactions for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations.

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Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from share-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities.

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Gain or loss recognized on sale of property; includes oil and gas property and timber property.

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Change in recurring obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and sale of goods and services.

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The net change during the period in the amount of cash payments due to taxing authorities for taxes that are based on the reporting entity's earnings.

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The net change during the reporting period in the amount of prepayments by customers for goods or services to be provided at a later date.

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The net change during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.

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For entities with classified balance sheets, the net change during the reporting period in the value of other assets or liabilities used in operating activities, that are not otherwise defined in the taxonomy. For entities with unclassified balance sheets, the net change during the reporting period in the value of all other assets or liabilities used in operating activities.

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The net change during the reporting period in the amount due to fund pension and non-pension benefits to employees, retired and disabled former employees.

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The net change during the reporting period in the total amount due within one year (or one operating cycle) from all parties, associated with underlying transactions that are classified as operating activities.

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The net cash inflow (outflow) from financing activity for the period.

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The net cash inflow (outflow) from investing activity.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income.

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The cash outflow to reacquire common stock during the period.

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The total cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards, including stock option exercises.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock options, amortization of restricted stock, and adjustment for officers compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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