Quarterly report [Sections 13 or 15(d)]

Summary of Significant Accounting Policies - Other (Details)

v3.25.3
Summary of Significant Accounting Policies - Other (Details)
$ in Thousands, shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
item
shares
Sep. 30, 2024
USD ($)
shares
Sep. 30, 2025
USD ($)
item
segment
shares
Sep. 30, 2024
USD ($)
shares
Dec. 31, 2024
USD ($)
Schedule Of Significant Accounting Policies [Line Items]          
Antidilutive securities excluded from computation of earnings per share | shares 0.3 2.5 2.6 6.1  
Number of reportable segments | segment     1    
Foreign currency transaction gain (loss) $ 6,800 $ (32,100) $ (174,200) $ (16,500)  
Accounts receivable, net 252,626   252,626   $ 221,412
Ship, carrying value $ 18,940,034   $ 18,940,034   $ 16,810,650
Number of cruise ships | item 34   34    
Sales Revenue, Net | Geographic Concentration Risk          
Schedule Of Significant Accounting Policies [Line Items]          
Concentration risk, benchmark     No other individual country’s revenues exceed 10% in any given period.    
Sales Revenue, Net | Geographic Concentration Risk | Minimum          
Schedule Of Significant Accounting Policies [Line Items]          
Percentage of revenue attributable to U.S.- sourced passengers     84.00%    
Sales Revenue, Net | Geographic Concentration Risk | Maximum          
Schedule Of Significant Accounting Policies [Line Items]          
Percentage of revenue attributable to U.S.- sourced passengers     85.00%