Changes in Accumulated Other Comprehensive Income (Loss) (Changes by Component) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	$ 8,760,669	$ 12,163,846	$ 11,105,461
Other comprehensive (loss) income before reclassifications	3,826	(91,858)	(165,553)
Amounts reclassified from accumulated other comprehensive loss	24,630	150,230	(4,426)
Net current-period other comprehensive (loss) income	28,456	58,372	(169,979)
Balance	5,085,556	8,760,669	12,163,846
Changes related to cash flow derivative hedges
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(650,519)	(688,529)	(537,216)
Other comprehensive (loss) income before reclassifications	(16,667)	(41,109)	(146,108)
Amounts reclassified from accumulated other comprehensive loss	20,713	79,119	(5,205)
Net current-period other comprehensive (loss) income	4,046	38,010	(151,313)
Balance	(646,473)	(650,519)	(688,529)
Changes in defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(65,542)	(45,558)	(26,023)
Other comprehensive (loss) income before reclassifications	4,790	(22,051)	(20,314)
Amounts reclassified from accumulated other comprehensive loss	3,917	2,067	779
Net current-period other comprehensive (loss) income	8,707	(19,984)	(19,535)
Balance	(56,835)	(65,542)	(45,558)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(23,280)	(63,626)	(64,495)
Other comprehensive (loss) income before reclassifications	15,703	(28,698)	869
Amounts reclassified from accumulated other comprehensive loss	0	69,044	0
Net current-period other comprehensive (loss) income	15,703	40,346	869
Balance	(7,577)	(23,280)	(63,626)
Accumulated other comprehensive (loss) income
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance	(739,341)	(797,713)	(627,734)
Balance	$ (710,885)	$ (739,341)	$ (797,713)