Accumulated Other Comprehensive Income (Loss) (AOCI balances) (Details 2) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of	$ 4,001,868	$ 3,752,661
Other Comprehensive (Loss) Income, Net of Tax	(22,492)	585
As of	4,070,482	3,769,730
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of	614,337
Other comprehensive (loss) income before reclassifications	(12,337)
Net amount reclassified from accumulated other comprehensive income (loss)	(10,155)
Other Comprehensive (Loss) Income, Net of Tax	(22,492)
As of	591,845
Cumulative Foreign Currency Translation Adjustment [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of	(32,711)
Other comprehensive (loss) income before reclassifications	(13,284)
Net amount reclassified from accumulated other comprehensive income (loss)	0
Other Comprehensive (Loss) Income, Net of Tax	(13,284)	8,994
As of	(45,995)
Unrealized Gain on Pensions and Other Postretirement Plans [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of	649,185
Other comprehensive (loss) income before reclassifications	0
Net amount reclassified from accumulated other comprehensive income (loss)	(10,030)	(7,693)
Other Comprehensive (Loss) Income, Net of Tax	(10,030)	(7,693)
As of	639,155
Cash Flow Hedges [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
As of	(2,137)
Other comprehensive (loss) income before reclassifications	947
Net amount reclassified from accumulated other comprehensive income (loss)	(125)
Other Comprehensive (Loss) Income, Net of Tax	822	$ (716)
As of	$ (1,315)