Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive (Loss) by Component (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
AOCI Attributable to Parent [Roll Forward]
Beginning balance	$ 4,416,985	$ 3,804,447	$ 3,503,290
Other comprehensive income (loss) before reclassifications	(296,416)	48,229	(215,148)
Amounts reclassified from accumulated other comprehensive loss	11,545	7,441	40,345
Ending balance	4,351,851	4,416,985	3,804,447
Pension and Other Post-Retirement Benefits
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(517,941)	(506,610)	(463,227)
Other comprehensive income (loss) before reclassifications	(74,604)	(18,965)	(71,258)
Amounts reclassified from accumulated other comprehensive loss	11,545	7,634	27,875
Ending balance	(581,000)	(517,941)	(506,610)
Cash Flow Hedges
AOCI Attributable to Parent [Roll Forward]
Beginning balance	0	(2,572)	(15,042)
Other comprehensive income (loss) before reclassifications	0	2,765	0
Amounts reclassified from accumulated other comprehensive loss	0	(193)	12,470
Ending balance	0	0	(2,572)
Foreign Currency Translation
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(458,931)	(523,360)	(379,470)
Other comprehensive income (loss) before reclassifications	(221,812)	64,429	(143,890)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Ending balance	(680,743)	(458,931)	(523,360)
Total
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(976,872)	(1,032,542)	(857,739)
Ending balance	$ (1,261,743)	$ (976,872)	$ (1,032,542)