Changes in Accumulated Other Comprehensive Loss - Schedule of Changes in AOCL by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 885,806	$ 846,957	$ 882,063	$ 833,797
Other comprehensive income (loss) before reclassification	11,769		10,230
Amounts reclassified from other comprehensive loss	17,542		14,745
Total other comprehensive income (loss)	29,311	(10,156)	24,975	(6,672)
Ending balance	896,130	853,998	896,130	853,998
Accumulated Other  Comprehensive  Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(44,013)	(34,559)	(39,677)	(38,043)
Ending balance	(14,702)	$ (44,715)	(14,702)	$ (44,715)
Retirement Obligations
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(10,727)		(10,696)
Other comprehensive income (loss) before reclassification	2,418		2,241
Amounts reclassified from other comprehensive loss	17,618		17,764
Total other comprehensive income (loss)	20,036		20,005
Ending balance	9,309		9,309
Foreign Currency
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(36,205)		(32,785)
Other comprehensive income (loss) before reclassification	12,737		9,317
Amounts reclassified from other comprehensive loss	0		0
Total other comprehensive income (loss)	12,737		9,317
Ending balance	(23,468)		(23,468)
Change in Derivatives Qualifying as Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	2,919		3,804
Other comprehensive income (loss) before reclassification	(3,386)		(1,328)
Amounts reclassified from other comprehensive loss	(76)		(3,019)
Total other comprehensive income (loss)	(3,462)		(4,347)
Ending balance	$ (543)		$ (543)