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

Long-Term Debt - Summary of Exchangeable Notes (Details)

v3.25.4
Long-Term Debt - Summary of Exchangeable Notes (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2025
Dec. 31, 2025
Apr. 30, 2025
Dec. 31, 2024
Debt Instrument [Line Items]        
Fair Value   $ 14,100,000   $ 12,800,000
Exchangeable Senior Notes Due 2025        
Debt Instrument [Line Items]        
Principal amount       449,990
Unamortized debt discount, including deferred financing fees       (1,463)
Net carrying amount       $ 448,527
Interest rate   5.375%   5.38%
Common share issuance for NCLC Exchangeable Notes 5,120,487      
1.125% Exchangeable Senior Notes Due 2027        
Debt Instrument [Line Items]        
Principal amount   $ 192,037   $ 1,150,000
Unamortized debt discount, including deferred financing fees   (1,097)   (12,289)
Net carrying amount   $ 190,940   $ 1,137,711
Interest rate   1.125%   1.13%
2.5% Exchangeable Senior Notes Due 2027        
Debt Instrument [Line Items]        
Principal amount   $ 24,138   $ 473,175
Unamortized debt discount, including deferred financing fees   (149)   (5,411)
Net carrying amount   $ 23,989   $ 467,764
Interest rate   2.50%   2.50%
0.875% Exchangeable Senior Notes Due 2030        
Debt Instrument [Line Items]        
Principal amount   $ 353,876    
Unamortized debt discount, including deferred financing fees   (2,829)    
Net carrying amount   $ 351,047    
Interest rate   0.875% 0.875%  
0.750% Exchangeable Senior Notes Due 2030        
Debt Instrument [Line Items]        
Principal amount   $ 1,407,000    
Unamortized debt discount, including deferred financing fees   (25,139)    
Net carrying amount   $ 1,381,861    
Interest rate 0.75% 0.75%    
Level 2 | Exchangeable Senior Notes Due 2025        
Debt Instrument [Line Items]        
Fair Value       $ 641,560
Level 2 | 1.125% Exchangeable Senior Notes Due 2027        
Debt Instrument [Line Items]        
Fair Value   $ 190,988   1,177,347
Level 2 | 2.5% Exchangeable Senior Notes Due 2027        
Debt Instrument [Line Items]        
Fair Value   24,285   $ 492,395
Level 2 | 0.875% Exchangeable Senior Notes Due 2030        
Debt Instrument [Line Items]        
Fair Value   387,692    
Level 2 | 0.750% Exchangeable Senior Notes Due 2030        
Debt Instrument [Line Items]        
Fair Value   $ 1,354,111