Accumulated Other Comprehensive Loss (Changes) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period	$ (392,355)	$ 59,964	$ (368,576)	$ 60,653
Other comprehensive income (loss) before reclassifications			(21,296)	20,531
Reclassifications into earnings			7,018	7,040
Other comprehensive (loss) income, net of tax	(1,712)	11,985	(14,278)	27,571
Balances, end of period	(427,889)	(75,487)	(427,889)	(75,487)
Cash flow hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period			6,962	12,503
Other comprehensive income (loss) before reclassifications			964	(1,506)
Reclassifications into earnings			(3,881)	(181)
Other comprehensive (loss) income, net of tax			(2,917)	(1,687)
Balances, end of period	4,045	10,816	4,045	10,816
Available for sale securities
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period			(33,463)	(39,440)
Other comprehensive income (loss) before reclassifications			(1,843)	1,957
Reclassifications into earnings			851	(7)
Other comprehensive (loss) income, net of tax			(992)	1,950
Balances, end of period	(34,455)	(37,490)	(34,455)	(37,490)
Pension and postretirement benefit plans
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period			(757,452)	(716,056)
Other comprehensive income (loss) before reclassifications			0	0
Reclassifications into earnings			10,048	7,228
Other comprehensive (loss) income, net of tax			10,048	7,228
Balances, end of period	(747,404)	(708,828)	(747,404)	(708,828)
Foreign currency adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period			(67,292)	(92,571)
Other comprehensive income (loss) before reclassifications			(20,417)	20,080
Reclassifications into earnings			0	0
Other comprehensive (loss) income, net of tax			(20,417)	20,080
Balances, end of period	(87,709)	(72,491)	(87,709)	(72,491)
Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balances, beginning of period	(863,811)	(819,978)	(851,245)	(835,564)
Other comprehensive (loss) income, net of tax	(1,712)	11,985	(14,278)	27,571
Balances, end of period	$ (865,523)	$ (807,993)	$ (865,523)	$ (807,993)