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Investments and Other Assets - Narrative (Details)
$ in Thousands, € in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Apr. 30, 2016
Mar. 31, 2023
USD ($)
Sep. 30, 2023
USD ($)
entity
Sep. 30, 2022
USD ($)
Sep. 30, 2023
EUR (€)
entity
Dec. 31, 2022
USD ($)
Dec. 31, 2022
EUR (€)
Other Assets              
Proceeds from sale of noncontrolling interest     $ 209,320 $ 0      
Property, Plant and Equipment              
Other Assets              
Credit loss     $ 81,600 $ 81,600      
Port Of Miami              
Other Assets              
Percentage of investment sold   80.00%          
Proceeds from sale of noncontrolling interest   $ 208,900          
Port Of Miami | Variable Interest Entity, Primary Beneficiary              
Other Assets              
Percentage of ownership interest   20.00%          
TUI Cruises GmbH joint venture              
Other Assets              
Percentage of ownership interest     50.00%   50.00%    
TUI Cruises GmbH joint venture | TUI cruise ships              
Other Assets              
Restriction on reduction of current ownership interest (as a percent)     37.55%   37.55%    
TUI Cruises GmbH joint venture | Not Primary Beneficiary              
Other Assets              
Percentage of ownership interest     50.00%   50.00%    
Investments in entity     $ 586,700     $ 466,000  
Underlying equity in net assets     498,500     361,500  
Advances to affiliate     $ 79,700   € 75.3 $ 93,000 € 87.2
TUI Cruises GmbH joint venture | Not Primary Beneficiary | Splendour of the Seas              
Other Assets              
Interest rate on loan provided to related party (as a percent) 6.25%            
Debt instrument, term 10 years            
Debt, guaranteed percentage 50.00%            
Grand Bahamas Shipyard Ltd. | Not Primary Beneficiary              
Other Assets              
Percentage of ownership interest     40.00%   40.00%    
Italian Entities              
Other Assets              
Number of entities | entity     2   2