Accumulated Other Comprehensive Loss - Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ 1,989,581
Other comprehensive income before reclassifications			127,948
Amounts reclassified from accumulated other comprehensive loss			3,243
Other comprehensive income (loss)	$ 13,213	$ 36,933	131,191	$ (9,236)
Ending balance	2,272,451	2,053,970	2,272,451	2,053,970
Accumulated other comprehensive loss
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(235,379)	(297,530)	(353,357)	(251,361)
Ending balance	(222,166)	$ (260,597)	(222,166)	$ (260,597)
Unrecognized Net Defined Benefit Plan Costs
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(129,988)
Other comprehensive income before reclassifications			2,204
Amounts reclassified from accumulated other comprehensive loss			3,837
Other comprehensive income (loss)			6,041
Ending balance	(123,947)		(123,947)
Change in Fair Value of Derivatives
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(5,039)
Other comprehensive income before reclassifications			854
Amounts reclassified from accumulated other comprehensive loss			(594)
Other comprehensive income (loss)			260
Ending balance	(4,779)		(4,779)
Foreign Currency Translation
Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(218,330)
Other comprehensive income before reclassifications			124,890
Amounts reclassified from accumulated other comprehensive loss			0
Other comprehensive income (loss)			124,890
Ending balance	$ (93,440)		$ (93,440)