Accumulated Other Comprehensive Income (Loss) (AOCI balances) (Details 2) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of	$ 4,322,243	$ 4,472,941	$ 4,411,669	$ 3,975,912	$ 3,864,839	$ 3,766,393	$ 4,411,669	$ 3,766,393
Other Comprehensive Loss, Net of Tax	(55,455)	(52,979)	(13,135)	(16,126)	1,080	(1,203)	(121,569)	(16,249)
As of	4,276,961	$ 4,322,243	4,472,941	3,973,738	$ 3,975,912	$ 3,864,839	4,276,961	3,973,738
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of			971,388				971,388
Other comprehensive (loss) income before reclassifications							(83,584)
Net amount reclassified from accumulated other comprehensive income (loss)							(37,985)
Other Comprehensive Loss, Net of Tax							(121,569)
As of	849,819						849,819
Cumulative Foreign Currency Translation Adjustment [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of			(6,298)				(6,298)
Other comprehensive (loss) income before reclassifications							(86,926)
Net amount reclassified from accumulated other comprehensive income (loss)							0
Other Comprehensive Loss, Net of Tax	(44,260)			(16,033)			(86,926)	(15,352)
As of	(93,224)						(93,224)
Unrealized Gain on Pensions and Other Postretirement Plans [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of			979,157				979,157
Other comprehensive (loss) income before reclassifications							0
Net amount reclassified from accumulated other comprehensive income (loss)	(12,891)			(223)			(38,443)	(1,514)
Other Comprehensive Loss, Net of Tax	(12,891)			(223)			(38,443)	(1,514)
As of	940,714						940,714
Cash Flow Hedges [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of			$ (1,471)				(1,471)
Other comprehensive (loss) income before reclassifications							3,342
Net amount reclassified from accumulated other comprehensive income (loss)							458
Other Comprehensive Loss, Net of Tax	1,696			$ 130			3,800	$ 617
As of	$ 2,329						$ 2,329