Accumulated Other Comprehensive Loss (Changes) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period	$ (578,433)	$ (368,576)
Other comprehensive income (loss) before reclassifications	22,165	(16,150)
Reclassifications into earnings	5,431	3,584
Other comprehensive income (loss), net of tax	27,596	(12,566)
Balances, end of period	(535,884)	(392,355)
Cash flow hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period		6,962
Other comprehensive income (loss) before reclassifications		702
Reclassifications into earnings		(1,943)
Other comprehensive income (loss), net of tax		(1,241)
Balances, end of period		5,721
Available for sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period	(29,597)	(33,463)
Other comprehensive income (loss) before reclassifications	2,616	(1,453)
Reclassifications into earnings	379	486
Other comprehensive income (loss), net of tax	2,995	(967)
Balances, end of period	(26,602)	(34,430)
Pension and postretirement benefit plans
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period	(704,818)	(757,452)
Other comprehensive income (loss) before reclassifications	0	0
Reclassifications into earnings	5,052	5,041
Other comprehensive income (loss), net of tax	5,052	5,041
Balances, end of period	(699,766)	(752,411)
Foreign currency adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period	(104,756)	(67,292)
Other comprehensive income (loss) before reclassifications	19,549	(15,399)
Reclassifications into earnings	0	0
Other comprehensive income (loss), net of tax	19,549	(15,399)
Balances, end of period	(85,207)	(82,691)
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period	(839,171)	(851,245)
Other comprehensive income (loss), net of tax	27,596	(12,566)
Balances, end of period	$ (811,575)	$ (863,811)