Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive (Loss) by Component (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent [Roll Forward]
Beginning balance	$ 4,416,985	$ 3,804,447
Other comprehensive income (loss) before reclassifications	25,359	(60,262)
Amounts reclassified from accumulated other comprehensive loss	8,661	5,542
Other comprehensive income (loss), net of income taxes	34,020	(54,720)
Ending balance	4,710,154	4,201,275
Pension and Other Post-Retirement Benefits
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(517,941)	(506,610)
Other comprehensive income (loss) before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive loss	8,661	5,735
Other comprehensive income (loss), net of income taxes	8,661	5,735
Ending balance	(509,280)	(500,875)
Cash Flow Hedges
AOCI Attributable to Parent [Roll Forward]
Beginning balance	0	(2,572)
Other comprehensive income (loss) before reclassifications	0	2,765
Amounts reclassified from accumulated other comprehensive loss	0	(193)
Other comprehensive income (loss), net of income taxes	0	2,572
Ending balance	0	0
Foreign Currency Translation
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(458,931)	(523,360)
Other comprehensive income (loss) before reclassifications	25,359	(63,027)
Amounts reclassified from accumulated other comprehensive loss	0	0
Other comprehensive income (loss), net of income taxes	25,359	(63,027)
Ending balance	(433,572)	(586,387)
Total
AOCI Attributable to Parent [Roll Forward]
Beginning balance	(976,872)	(1,032,542)
Ending balance	$ (942,852)	$ (1,087,262)