Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2020	Mar. 31, 2020
Current assets:
Cash and cash equivalents		$ 440,211	$ 485,463	[1]
Trade and other receivables, less allowance for credit losses of $7,890 and $4,293		233,802	359,487	[1]
Contract assets		193,056	244,417	[1]
Inventory, net		465,800	452,976	[1]
Assets held for sale		115,940
Prepaid expenses and other current assets		15,727	19,289	[1]
Total current assets		1,464,536	1,561,632	[1]
Property and equipment, net		360,949	418,141	[1]
Goodwill		516,833	513,527	[1]
Intangible assets, net		116,886	381,968	[1]
Other, net		74,221	105,065	[1]
Total assets		2,533,425	2,980,333	[1]
Current liabilities:
Current portion of long-term debt		7,212	7,336	[1]
Accounts payable		242,475	457,694	[1]
Contract liabilities		175,159	295,320	[1]
Accrued expenses		196,623	227,403	[1]
Liabilities related to assets held for sale		52,573
Total current liabilities		674,042	987,753	[1]
Long-term debt, less current portion		2,014,595	1,800,171	[1]
Accrued pension and other postretirement benefits		626,851	660,065	[1]
Deferred income taxes		7,493	7,439	[1]
Other noncurrent liabilities		274,801	306,169	[1]
Stockholders' deficit:
Common stock, $.001 par value, 100,000,000 shares authorized, 52,460,920 and 52,460,920 shares issued; 52,078,690 and 51,858,089 shares outstanding		52	52	[1]
Capital in excess of par value		794,619	804,830	[1]
Treasury stock, at cost, 382,230 and 602,831 shares		(20,886)	(36,217)	[1]
Accumulated other comprehensive loss		(725,386)	(746,448)	[1]
Accumulated deficit		(1,112,756)	(803,481)	[1]
Total stockholders' deficit	[1]	(1,064,357)	(781,264)
Total liabilities and stockholders' deficit		$ 2,533,425	$ 2,980,333	[1]

[1] As adjusted; refer to Note 1.