Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating Activities
Net loss	$ (32,183)	$ (377,391)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	40,035	72,819
Impairment of long-lived assets		252,382
Amortization of acquired contract liability	(3,645)	(35,017)
Loss on sale of assets and businesses	13,629	46,020
Curtailments, settlements, and special termination benefits loss, net	20,046
Other amortization included in interest expense	7,502	21,912
Provision for credit losses	247	4,890
Share-based compensation	7,664	9,086
Changes in other assets and liabilities, excluding the effects of acquisitions and divestitures:
Trade and other receivables	30,060	169,744
Contract assets	(7,538)	55,170
Inventories	(5,165)	(2,152)
Prepaid expenses and other current assets	3,716	1,041
Accounts payable, accrued expenses, and contract liabilities	(201,476)	(375,967)
Accrued pension and other postretirement benefits	(42,195)	(36,838)
Other, net	(678)	(1,570)
Net cash used in operating activities	(169,981)	(195,871)
Investing Activities
Capital expenditures	(15,817)	(18,988)
Proceeds from sale of assets and businesses	220,550	2,380
Investment in joint venture	(2,101)
Purchase of facility related to divested businesses	(21,550)
Net cash provided by (used in) investing activities	181,082	(16,608)
Financing Activities
Net decrease in revolving credit facility		(400,000)
Proceeds from issuance of long-term debt	107	713,900
Retirement of debt and finance lease obligations	(379,021)	(95,439)
Payment of deferred financing costs	(400)	(20,215)
Premium on redemption of first lien notes	(9,108)
Repurchase of shares for share-based compensation minimum tax obligation	(3,135)	(552)
Net cash used in financing activities	(391,557)	197,694
Effect of exchange rate changes on cash	(3,287)	6,598
Net change in cash and cash equivalents	(383,743)	(8,187)
Cash and cash equivalents at beginning of period	589,882	485,463
Cash and cash equivalents at end of period	$ 206,139	$ 477,276