XML 52 R40.htm IDEA: XBRL DOCUMENT v3.20.2
Revenue Recognition - Narrative (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
Mar. 31, 2020
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
segment
lineOfBusiness
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Disaggregation of Revenue [Line Items]            
Number of lines of business | lineOfBusiness       1    
Number of segments | segment       1    
Operating revenue $ 60,004   $ 712,189 $ 619,148 $ 1,368,940  
Revenue, performance obligation, timing       represents revenue that is expected to be realized over the next 12 months    
Ticket validity period 24 months 1 year        
Passenger revenue, excluding frequent flyer            
Disaggregation of Revenue [Line Items]            
Operating revenue $ 26,169   613,574 $ 500,304 1,181,429  
Air traffic liability 351,500     351,500   $ 426,900
Air traffic revenue recognized 400   333,900 253,600 389,800  
Frequent flyer revenue, transportation component            
Disaggregation of Revenue [Line Items]            
Operating revenue 3,593   $ 39,849 32,927 $ 73,298  
Air traffic liability $ 375,200     $ 375,200   $ 349,800
North America | Geographic Concentration Risk | Domestic Revenue Benchmark            
Disaggregation of Revenue [Line Items]            
Concentration Risk, Percentage 57.00%   73.00%