Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition (Details)

v3.20.2
Revenue Recognition (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Sep. 30, 2020
USD ($)
segment
Dec. 31, 2019
USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Number of reportable segments | segment   1  
Receivables from customers included in accounts receivable, net $ 4.1 $ 4.1 $ 15.3
Advanced ticket sales $ 33.4 $ 33.4 $ 1,400.0
Percentage refundable on cancellation 20.00% 20.00%  
Revenue recognized included in contract liability   $ 900.0  
Costs to obtain contract $ 15.5 $ 160.4  
Revenue      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Concentration risk, benchmark   No other individual country’s revenues exceed 10% in any given period.  
Revenue | Minimum      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Percentage of revenue attributable to U.S.- sourced passengers   75.00%  
Revenue | Maximum      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Percentage of revenue attributable to U.S.- sourced passengers   80.00%