Changes in Accumulated Other Comprehensive Income (Loss) (Reclassifications) (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net of interest capitalized				$ (1,291,753)	$ (844,238)	$ (408,513)
Depreciation and amortization expenses				(1,292,878)	(1,279,254)	(1,245,942)
Other income (expense)	[1]			20,284	(137,085)	(24,513)
Fuel				(385,322)	(371,015)	(697,962)
Other operating				(2,657,512)	(2,765,108)	(6,062,765)
Other operating
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other operating				(945,205)	(942,232)	(1,405,698)
Reclassification out of accumulated other comprehensive income (loss)
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period				(24,630)	(150,230)	4,426
Reclassification out of accumulated other comprehensive income (loss) | Gain (loss) on cash flow derivative hedges:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period				(20,713)	(79,119)	5,205
Reclassification out of accumulated other comprehensive income (loss) | Gain (loss) on cash flow derivative hedges: | Interest rate swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense, net of interest capitalized				(43,185)	(25,267)	(4,289)
Reclassification out of accumulated other comprehensive income (loss) | Gain (loss) on cash flow derivative hedges: | Foreign currency forward contracts
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Depreciation and amortization expenses				(15,359)	(14,679)	(14,063)
Other income (expense)				(2,797)	(7,315)	(5,080)
Reclassification out of accumulated other comprehensive income (loss) | Gain (loss) on cash flow derivative hedges: | Fuel swaps
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other income (expense)				(409)	3,549	(1,292)
Fuel				41,037	(35,407)	29,929
Reclassification out of accumulated other comprehensive income (loss) | Actuarial loss
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Payroll and related				(3,917)	(2,067)	(779)
Reclassification out of accumulated other comprehensive income (loss) | Amortization of defined benefit plans:
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total reclassifications for the period				(3,917)	$ (2,067)	$ (779)
Reclassification out of accumulated other comprehensive income (loss) | Foreign currency translation adjustments | Other operating
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other operating		$ 0	$ (69,044)	$ 0

[1] Including a $62.6 million net loss related to the 2021 elimination of the Silversea Cruises reporting lag.