Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,532,133	$ 2,208,805	$ 10,950,661
Cruise itinerary
Disaggregation of Revenue [Line Items]
Total revenues	1,426,372	2,014,488	10,432,213
Cruise itinerary | North America
Disaggregation of Revenue [Line Items]
Total revenues	1,039,783	1,342,429	6,392,354
Cruise itinerary | Asia/Pacific
Disaggregation of Revenue [Line Items]
Total revenues	128,348	411,865	1,529,898
Cruise itinerary | Europe
Disaggregation of Revenue [Line Items]
Total revenues	180,256	18,604	1,942,057
Cruise itinerary | Other regions
Disaggregation of Revenue [Line Items]
Total revenues	77,985	241,590	567,904
Other revenues
Disaggregation of Revenue [Line Items]
Total revenues	$ 105,761	$ 194,317	$ 518,448
Passenger ticket | Other regions
Disaggregation of Revenue [Line Items]
Percentage of revenues by country	24.00%	33.00%	35.00%
Passenger ticket | United States
Disaggregation of Revenue [Line Items]
Percentage of revenues by country	76.00%	67.00%	65.00%