Changes in Accumulated Other Comprehensive Loss - Changes in AOCI by Component (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 5,085,556	$ 8,760,669
Ending balance	3,398,098	7,884,015
Changes related to cash flow derivative hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(646,473)	(650,519)
Other comprehensive income (loss) before reclassifications	207,406	42,247
Amounts reclassified from accumulated other comprehensive loss	(95,998)	19,531
Net current-period other comprehensive income (loss)	111,408	61,778
Ending balance	(535,065)	(588,741)
Changes in defined benefit plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(56,835)	(65,542)
Other comprehensive income (loss) before reclassifications	26,107	5,085
Amounts reclassified from accumulated other comprehensive loss	1,658	2,290
Net current-period other comprehensive income (loss)	27,765	7,375
Ending balance	(29,070)	(58,167)
Foreign currency translation adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(7,577)	(23,280)
Other comprehensive income (loss) before reclassifications	20,460	6,233
Amounts reclassified from accumulated other comprehensive loss	0	0
Net current-period other comprehensive income (loss)	20,460	6,233
Ending balance	12,883	(17,047)
Accumulated  other comprehensive loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(710,885)	(739,341)
Other comprehensive income (loss) before reclassifications	253,973	53,565
Amounts reclassified from accumulated other comprehensive loss	(94,340)	21,821
Net current-period other comprehensive income (loss)	159,633	75,386
Ending balance	$ (551,252)	$ (663,955)