Stockholders' Deficit - Schedule of Changes in Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands		3 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Balance		$ (787,423)	$ (818,853)
Total other comprehensive (loss) income		(5,897)	22,672
Balance		(805,287)	(826,226)
Currency Translation Adjustment [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Balance		(47,933)	(42,161)
Other comprehensive (loss) income before reclassifications		(10,382)	2,749
Total other comprehensive (loss) income		(10,382)	2,749
Balance		(58,315)	(39,412)
Unrealized Gains and Losses on Derivative Instruments [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Balance		(270)	1,015
Other comprehensive (loss) income before reclassifications		(470)	(1,719)
Amounts reclassified from AOCI		(368)	1,013
Total other comprehensive (loss) income		(838)	(706)
Balance		(1,108)	309
Defined Benefit Pension Plans and Other Postretirement Benefits [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Balance		(415,151)	(489,046)
Other comprehensive (loss) income before reclassifications			10,343
Amounts reclassified from AOCI	[1]	5,323	10,286
Total other comprehensive (loss) income		5,323	20,629
Balance		(409,828)	(468,417)
Accumulated Other Comprehensive Income (Loss) [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Balance	[2]	(463,354)	(530,192)
Other comprehensive (loss) income before reclassifications	[2]	(10,852)	11,373
Amounts reclassified from AOCI	[2]	4,955	11,299
Total other comprehensive (loss) income	[2]	(5,897)	22,672
Balance	[2]	$ (469,251)	$ (507,520)

[1] Includes amortization of actuarial losses and recognized prior service costs, which are included in net periodic pension income. Refer to Note 9 for additional disclosure regarding the Company's postretirement benefit plans.

[2] Net of tax