Accumulated Other Comprehensive Loss - Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 1,562,696
Other comprehensive income before reclassifications	14,368
Amounts reclassified from accumulated other comprehensive loss	818
Other comprehensive income (loss)	15,186	$ (30,853)
Ending balance	1,638,239	1,276,356
Accumulated Other Comprehensive Loss
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(259,828)	(260,953)
Ending balance	(244,642)	$ (291,806)
Unrecognized Net Defined Benefit Plan Costs
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(119,474)
Other comprehensive income before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	499
Other comprehensive income (loss)	499
Ending balance	(118,975)
Change in Fair Value of Derivatives
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(2,327)
Other comprehensive income before reclassifications	2,018
Amounts reclassified from accumulated other comprehensive loss	319
Other comprehensive income (loss)	2,337
Ending balance	10
Foreign Currency Translation
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(138,027)
Other comprehensive income before reclassifications	12,350
Amounts reclassified from accumulated other comprehensive loss	0
Other comprehensive income (loss)	12,350
Ending balance	$ (125,677)