Quarterly report [Sections 13 or 15(d)]

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

v3.25.3
Long-Term Debt - Summary of Exchangeable Notes (Details) - USD ($)
$ in Thousands
Aug. 01, 2025
Sep. 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
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   (1,343) (12,289)
Net carrying amount   $ 190,694 1,137,711
Interest rate   1.125%  
2.5% Exchangeable Senior Notes Due 2027      
Debt Instrument [Line Items]      
Principal amount   $ 24,138 473,175
Unamortized debt discount, including deferred financing fees   (182) (5,411)
Net carrying amount   $ 23,956 467,764
Interest rate   2.50%  
0.875% Exchangeable Senior Notes Due 2030      
Debt Instrument [Line Items]      
Principal amount   $ 353,876  
Unamortized debt discount, including deferred financing fees   (2,999)  
Net carrying amount   $ 350,877  
Interest rate   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   (26,454)  
Net carrying amount   $ 1,380,546  
Interest rate   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   $ 194,418 1,177,347
Level 2 | 2.5% Exchangeable Senior Notes Due 2027      
Debt Instrument [Line Items]      
Fair Value   24,749 $ 492,395
Level 2 | 0.875% Exchangeable Senior Notes Due 2030      
Debt Instrument [Line Items]      
Fair Value   409,845  
Level 2 | 0.750% Exchangeable Senior Notes Due 2030      
Debt Instrument [Line Items]      
Fair Value   $ 1,408,829