Changes in Accumulated Other Comprehensive Loss - Reclassifications (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Reclassifications out of accumulated other comprehensive loss
Interest expense, net of interest capitalized	$ (302,706)	$ (304,811)	$ (580,365)	$ (577,325)
Depreciation and amortization expenses	(351,542)	(323,439)	(691,009)	(633,605)
Other income (expense)	6,457	24,508	3,919	29,541
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income
Reclassifications out of accumulated other comprehensive loss
Total reclassifications for the period	66,349	(9,849)	94,340	(21,821)
Loss on cash flow derivative hedges | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income
Reclassifications out of accumulated other comprehensive loss
Total reclassifications for the period	67,279	(8,302)	95,998	(19,531)
Loss on cash flow derivative hedges | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income | Interest rate swaps
Reclassifications out of accumulated other comprehensive loss
Interest expense, net of interest capitalized	(5,152)	(11,448)	(15,585)	(20,957)
Loss on cash flow derivative hedges | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income | Foreign currency forward contracts
Reclassifications out of accumulated other comprehensive loss
Depreciation and amortization expenses	(4,294)	(3,855)	(8,359)	(7,636)
Other income (expense)	(471)	(515)	(1,689)	(1,806)
Loss on cash flow derivative hedges | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income | Fuel swaps
Reclassifications out of accumulated other comprehensive loss
Other income (expense)	15	(7)	(354)	(414)
Fuel	77,181	7,523	121,985	11,282
Changes in defined benefit plans | Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income
Reclassifications out of accumulated other comprehensive loss
Payroll and related	(930)	(1,547)	(1,658)	(2,290)
Total reclassifications for the period	$ (930)	$ (1,547)	$ (1,658)	$ (2,290)