Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details)

v3.21.2
Revenue Recognition (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]          
Receivables from customers included in accounts receivable, net $ 900,000   $ 900,000   $ 1,000,000.0
Advanced ticket sales 50,500,000   50,500,000   $ 23,100,000,000
Revenue recognized included in contract liability     0 $ 900,000,000  
Costs to obtain contract $ 11,200,000 $ 38,600,000 $ 26,000,000.0 $ 130,600,000  
Sales Revenue, Net | Geographic Concentration Risk | Minimum          
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]          
Percentage of revenue attributable to U.S.- sourced passengers     75.00%    
Sales Revenue, Net | Geographic Concentration Risk | Maximum          
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]          
Percentage of revenue attributable to U.S.- sourced passengers     85.00%