Revenues - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Capitalized Contract Cost [Line Items]
Passenger ticket revenues	$ 4,160,453	$ 2,993,075	$ 10,568,581	$ 6,236,548
Contract liability	2,200,000		2,200,000		$ 1,800,000
Future cruise credits	400,000		400,000
Contract asset	168,100		168,100		167,900
Commission, transportation and other
Capitalized Contract Cost [Line Items]
Prepaid travel agent commissions	230,500		230,500		$ 177,500
Port Costs
Capitalized Contract Cost [Line Items]
Passenger ticket revenues	$ 252,300	$ 210,200	$ 700,000	$ 446,300
Minimum
Capitalized Contract Cost [Line Items]
Length of cruise			2 days
Maximum
Capitalized Contract Cost [Line Items]
Length of cruise			23 days