Annual report [Section 13 and 15(d), not S-K Item 405]

Long-Term Debt - 2025 Transactions (Details)

v3.25.4
Long-Term Debt - 2025 Transactions (Details)
$ / shares in Units, € in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2025
USD ($)
item
$ / shares
shares
Apr. 30, 2025
USD ($)
$ / shares
shares
Jan. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
$ / shares
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jul. 31, 2025
EUR (€)
May 31, 2025
USD ($)
Mar. 31, 2025
EUR (€)
Debt Instrument [Line Items]                        
Loss on extinguishment of debt             $ (272,085,000) $ (29,175,000) $ (6,701,000)      
Equity offering shares | shares 3,313,868 3,358,098                    
Shares issued, price per share | $ / shares $ 24.53 $ 19.06   $ 24.53                
Senior Unsecured Notes Due 2032                        
Debt Instrument [Line Items]                        
Principal amount     $ 1,800,000,000       $ 1,800,000,000          
Interest rate     6.75%       6.75%          
Senior Unsecured Notes Due 2032 | Call Date, Scenario One                        
Debt Instrument [Line Items]                        
Redemption price as a percentage of face amount     100.00%                  
Senior Unsecured Notes Due 2032 | Call Date, Scenario Two                        
Debt Instrument [Line Items]                        
Percentage of principal amount of debt redeemed     40.00%                  
Redemption price as a percentage of face amount     106.75%                  
Percentage of thresholds, after percentage     60.00%                  
Senior Unsecured Notes Due 2026                        
Debt Instrument [Line Items]                        
Principal amount             $ 1,425,000,000          
Interest rate             5.875% 5.88%        
Debt instrument redemption amount             $ 1,200,000,000          
Senior Secured Notes Due 2028                        
Debt Instrument [Line Items]                        
Principal amount             $ 600,000,000          
Interest rate             8.375% 8.38%        
Debt instrument redemption amount             $ 600,000,000          
Revolving Loan Facility                        
Debt Instrument [Line Items]                        
Interest rate             5.54% 6.77%        
Maximum borrowing capacity     $ 1,700,000,000   $ 2,500,000,000     $ 1,200,000,000     $ 1,700,000,000  
Number of vessels | item 9                      
Revolving Loan Facility | Minimum                        
Debt Instrument [Line Items]                        
Commitment fee, percentage     0.15%                  
Revolving Loan Facility | Maximum                        
Debt Instrument [Line Items]                        
Commitment fee, percentage     0.30%                  
Revolving Loan Facility | Base Rate | Minimum                        
Debt Instrument [Line Items]                        
Basis spread on variable rate     0.00%                  
Revolving Loan Facility | Base Rate | Maximum                        
Debt Instrument [Line Items]                        
Basis spread on variable rate     1.00%                  
Revolving Loan Facility | SOFR Rate | Minimum                        
Debt Instrument [Line Items]                        
Basis spread on variable rate     1.00%                  
Revolving Loan Facility | SOFR Rate | Maximum                        
Debt Instrument [Line Items]                        
Basis spread on variable rate     2.00%                  
Revolving Loan Facility | Scenario For Maturity Date Earlier To January 22, 2030                        
Debt Instrument [Line Items]                        
Debt instrument outstanding, threshold     $ 400,000,000                  
Senior Unsecured Notes Due 2029                        
Debt Instrument [Line Items]                        
Principal amount             $ 600,000,000          
Interest rate             7.75% 7.75%        
Senior Secured Notes Due 2029                        
Debt Instrument [Line Items]                        
Principal amount             $ 790,000,000          
Interest rate             8.125% 8.13%        
Senior unsecured notes due 2026 and senior secured notes due 2028 | Interest expense, net                        
Debt Instrument [Line Items]                        
Loss on extinguishment of debt           $ (49,500,000)            
Senior Unsecured Notes Due 2030                        
Debt Instrument [Line Items]                        
Principal amount             $ 315,000,000          
Interest rate             6.25% 6.25%        
Norwegian Aqua Term Loan                        
Debt Instrument [Line Items]                        
Export credit facility financing as percentage of contract price                       80.00%
Principal amount | €                       € 1,000.0
Interest rate                       1.83%
Exchangeable Senior Notes Due 2025                        
Debt Instrument [Line Items]                        
Principal amount   $ 353,900,000         $ 450,000,000          
Interest rate             5.375% 5.38%        
Aggregate cash payment, premium   64,000,000                    
Exchangeable Senior Notes Due 2025 | Interest expense, net                        
Debt Instrument [Line Items]                        
Loss on extinguishment of debt         $ (68,400,000)              
0.875% Exchangeable Senior Notes Due 2030                        
Debt Instrument [Line Items]                        
Principal amount   $ 353,900,000         $ 353,900,000          
Interest rate   0.875%         0.875%          
Principal amount of debt that is used in conversion calculations   $ 1,000                    
Ordinary share exchange rate   38.157                    
Initial exchange price | $ / shares   $ 26.21                    
Effective interest rate             1.07%          
0.875% Exchangeable Senior Notes Due 2030 | Maximum                        
Debt Instrument [Line Items]                        
Ordinary share exchange rate   52.4658                    
Oceania Allura Term Loan                        
Debt Instrument [Line Items]                        
Export credit facility financing as percentage of contract price                   80.00%    
Principal amount | €                   € 570.4    
Interest rate                   1.50%    
0.750% Exchangeable Senior Notes Due 2030                        
Debt Instrument [Line Items]                        
Principal amount $ 1,400,000,000     $ 1,400,000,000     $ 1,407,000,000          
Interest rate 0.75%     0.75%     0.75%          
Principal amount of debt that is used in conversion calculations $ 1,000                      
Ordinary share exchange rate 29.1189                      
Initial exchange price | $ / shares $ 34.34     $ 34.34                
Effective interest rate             1.14%          
0.750% Exchangeable Senior Notes Due 2030 | Maximum                        
Debt Instrument [Line Items]                        
Ordinary share exchange rate 40.7664                      
1.125% Exchangeable Senior Notes Due 2027                        
Debt Instrument [Line Items]                        
Principal amount             $ 1,150,000,000          
Interest rate             1.125% 1.13%        
Debt instrument redemption amount $ 958,000,000                      
Debt instrument repurchase amount 1,009,500,000     $ 1,009,500,000                
Ordinary share exchange rate             29.685          
Initial exchange price | $ / shares             $ 33.69          
Effective interest rate             1.64%          
1.125% Exchangeable Senior Notes Due 2027 | Maximum                        
Debt Instrument [Line Items]                        
Ordinary share exchange rate             42.3012          
2.5% Exchangeable Senior Notes Due 2027                        
Debt Instrument [Line Items]                        
Principal amount             $ 473,200,000          
Interest rate             2.50% 2.50%        
Debt instrument redemption amount 449,000,000                      
Debt instrument repurchase amount 480,500,000     480,500,000                
Ordinary share exchange rate             28.9765          
Initial exchange price | $ / shares             $ 34.51          
Effective interest rate             3.06%          
2.5% Exchangeable Senior Notes Due 2027 | Maximum                        
Debt Instrument [Line Items]                        
Ordinary share exchange rate             44.1891          
Senior Unsecured Notes Due 2031                        
Debt Instrument [Line Items]                        
Principal amount $ 1,200,000,000     $ 1,200,000,000     $ 1,200,000,000          
Interest rate 5.875%     5.875%     5.875%          
Senior Unsecured Notes Due 2031 | Call Date, Scenario One                        
Debt Instrument [Line Items]                        
Redemption price as a percentage of face amount 100.00%                      
Senior Unsecured Notes Due 2031 | Call Date, Scenario Two                        
Debt Instrument [Line Items]                        
Percentage of principal amount of debt redeemed 40.00%                      
Redemption price as a percentage of face amount 105.875%                      
Percentage of thresholds, after percentage 60.00%                      
Senior Unsecured Notes Due 2033                        
Debt Instrument [Line Items]                        
Principal amount $ 850,000,000     $ 850,000,000     $ 850,000,000          
Interest rate 6.25%     6.25%     6.25%          
Senior Unsecured Notes Due 2033 | Call Date, Scenario One                        
Debt Instrument [Line Items]                        
Redemption price as a percentage of face amount 100.00%                      
Senior Unsecured Notes Due 2033 | Call Date, Scenario Two                        
Debt Instrument [Line Items]                        
Percentage of principal amount of debt redeemed 40.00%                      
Redemption price as a percentage of face amount 106.25%                      
Percentage of thresholds, after percentage 60.00%                      
2027 1.125% Exchangeable Notes, 2027 2.5% Exchangeable Notes, 2026 Notes, 2027 Notes and 2029 Notes                        
Debt Instrument [Line Items]                        
Loss on extinguishment of debt       $ (154,500,000)