Quarterly report [Sections 13 or 15(d)]

Summary of Significant Accounting Policies - Other (Details)

v3.26.3
Summary of Significant Accounting Policies - Other (Details)
$ in Thousands, shares in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
item
shares
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2026
USD ($)
segment
item
shares
Sep. 30, 2025
USD ($)
shares
Dec. 31, 2025
USD ($)
Schedule Of Significant Accounting Policies [Line Items]          
Antidilutive securities excluded from computation of earnings per share | shares 1.2 0.3 3.1 2.6  
Number of reportable segments | segment     1    
Foreign currency transaction gain (loss) $ 19,900 $ 6,800 $ 94,700 $ (174,200)  
Accounts receivable, net 241,186   241,186   $ 291,659
Ship, carrying value $ 20,364,242   $ 20,364,242   $ 19,068,807
Number of cruise ships | item 33   33    
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.    
UNITED STATES | Sales Revenue, Net | Geographic Concentration Risk | Passenger [Member]          
Schedule Of Significant Accounting Policies [Line Items]          
Percentage of revenue attributable to U.S.- sourced passengers     84.00%