Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive (Loss) by Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
AOCI Attributable to Parent [Roll Forward]
Beginning balance	$ 3,804,447	$ 3,503,290
Other comprehensive income before reclassifications	23,827	42,132
Amounts reclassified from accumulated other comprehensive loss	1,914	10,730
Other comprehensive income, net of income taxes	25,741	52,862
Ending balance	3,939,636	3,607,876
Pension and Other Post-Retirement Benefits
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(506,610)	(463,227)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive loss	1,914	6,989
Other comprehensive income, net of income taxes	1,914	6,989
Ending balance	(504,696)	(456,238)
Cash Flow Hedges
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(2,572)	(15,042)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive loss	0	3,741
Other comprehensive income, net of income taxes	0	3,741
Ending balance	(2,572)	(11,301)
Foreign Currency Translation
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(523,360)	(379,470)
Other comprehensive income before reclassifications	23,827	42,132
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income, net of income taxes	23,827	42,132
Ending balance	(499,533)	(337,338)
Total
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(1,032,542)	(857,739)
Ending balance	$ (1,006,801)	$ (804,877)