v3.25.4
Investments and Other Assets - Narrative (Details)
€ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2025
USD ($)
floating_drydock
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
USD ($)
Dec. 31, 2024
EUR (€)
iCON Infrastructure Partners VI, L.P. | Not Primary Beneficiary          
Investments in and Advances to Affiliates, Activity [Line Items]          
Ownership interest retained, percent 10.00%        
TUI Cruises          
Investments in and Advances to Affiliates, Activity [Line Items]          
Ownership interest retained, percent 50.00%        
Investments in entity $ 990     $ 814  
Underlying equity in net assets       749  
Advances to affiliate       $ 57 € 55
TUI Cruises | TUI cruise ships          
Investments in and Advances to Affiliates, Activity [Line Items]          
Reduction of current ownership interest, minimum allowed (as a percent) 37.55%        
TUI Cruises | Not Primary Beneficiary          
Investments in and Advances to Affiliates, Activity [Line Items]          
Ownership interest retained, percent 50.00%        
Grand Bahama          
Investments in and Advances to Affiliates, Activity [Line Items]          
Percentage of investment sold 33.00%        
Grand Bahama | Not Primary Beneficiary          
Investments in and Advances to Affiliates, Activity [Line Items]          
Ownership interest retained, percent 33.00% 33.00% 49.00%    
Floating Docks          
Investments in and Advances to Affiliates, Activity [Line Items]          
Percentage of investment sold 33.00%        
Floating Docks | Not Primary Beneficiary          
Investments in and Advances to Affiliates, Activity [Line Items]          
Ownership interest retained, percent 33.00% 33.00% 50.00%    
Investments in entity $ 128        
Number of floating drydocks | floating_drydock 2        
Percentage of certain installment payments payable 33.00%