Revenue (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Capitalized Contract Cost [Line Items]
Total revenues	$ 8,840,540	$ 1,532,133	$ 2,208,805
Contract liabilities	1,800,000	800,000
Customer deposit	500,000
Credit card processor agreement, maximum exposure	133,000
Contract assets	167,900	52,900
Commissions, transportation and other
Capitalized Contract Cost [Line Items]
Capitalized contract costs	98,400	75,400
Port Costs
Capitalized Contract Cost [Line Items]
Total revenues	$ 638,800	$ 104,800	$ 125,000
Minimum
Capitalized Contract Cost [Line Items]
Duration of cruises	2 days
Maximum
Capitalized Contract Cost [Line Items]
Duration of cruises	19 days