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Revenue - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Capitalized Contract Cost [Line Items]      
Passenger ticket revenues $ 3,999 $ 3,728  
Contract liability 3,300   $ 2,800
Customer deposit 169    
Contract asset 159   161
Commission, transportation and other      
Capitalized Contract Cost [Line Items]      
Capitalized contract costs 296   $ 252
Port Costs      
Capitalized Contract Cost [Line Items]      
Passenger ticket revenues $ 275 $ 242  
Minimum      
Capitalized Contract Cost [Line Items]      
Duration of cruises 3 days    
Maximum      
Capitalized Contract Cost [Line Items]      
Duration of cruises 14 days