Accumulated Other Comprehensive Income (Loss) (Components of OCI) (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Before Tax		$ (838,641)	$ 501,454	$ 399,354
Other Comprehensive Income (Loss), Income Tax		203,404	(133,380)	(99,335)
Other Comprehensive Income (Loss), Net of Tax		(635,237)	368,074	300,019
Foreign Currency Translation Adjustment [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(48,340)	(16,052)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		0	0
Other Comprehensive Income (Loss), Before Tax		(48,340)	(16,052)	31,642
Other Comprehensive Income (Loss), Income Tax		0	0	0
Other Comprehensive Income (Loss), Net of Tax		(48,340)	(16,052)	31,642
Pension and Other Postretirement Plans [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(540,079)	385,679
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax		(67,969)	(2,436)	3,899
Reclassification from AOCI, Current Period, Tax		17,482	627	(1,053)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(50,487)	(1,809)	2,846
Other Comprehensive Income (Loss), Before Tax		(795,066)	517,157	368,994
Other Comprehensive Income (Loss), Income Tax		204,500	(133,287)	(99,628)
Other Comprehensive Income (Loss), Net of Tax		(590,566)	383,870	269,366
Net Actuarial Loss [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax		(727,097)	519,595	365,164
Other Comprehensive Income (Loss) before Reclassifications, Tax		187,018	(133,915)	(98,594)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		(540,079)	385,680	266,570
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	(70,833)	(5,486)	1,219
Reclassification from AOCI, Current Period, Tax		18,219	1,414	(329)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		(52,614)	(4,072)	890
Net Prior Service Cost [Member]
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax			(2)	(69)
Other Comprehensive Income (Loss) before Reclassifications, Tax			1	19
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(1)	(50)
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	2,864	3,170	2,680
Reclassification from AOCI, Current Period, Tax		(737)	(817)	(724)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		2,127	2,353	1,956
Curtailments and settlements Included in Net Income [Member]
Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	[1]	0	(120)	0
Reclassification from AOCI, Current Period, Tax			30
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(90)
Cash Flow Hedges
Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax		3,276	(375)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		393	631
Other Comprehensive Income (Loss), Before Tax		4,765	349	(1,282)
Other Comprehensive Income (Loss), Income Tax		(1,096)	(93)	293
Other Comprehensive Income (Loss), Net of Tax		$ 3,669	$ 256	$ (989)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension and postretirement plan cost (see Note 15) and are included in non-operating pension and postretirement benefit income in the Company’s Consolidated Statements of Operations.