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Investments - Narrative (Details)
shares in Millions, € in Billions
1 Months Ended 3 Months Ended
Mar. 31, 2022
USD ($)
Jun. 30, 2022
EUR (€)
shares
Jun. 30, 2022
USD ($)
shares
Dec. 31, 2021
USD ($)
Air France-KLM        
Investments [Line Items]        
Shares subscribed (in shares) | shares   36    
Ownership interest (percent)     3.00% 6.00%
Grupo Aeromexico        
Investments [Line Items]        
New capital stock after consolidation and exchange as percentage of previously outstanding (percent) 0.01%      
Air France-KLM        
Investments [Line Items]        
Share rights executed, value | €   € 2.3    
Number shares called by warrants (in shares) | shares     1,900  
Grupo Aeromexico        
Investments [Line Items]        
Ownership interest (percent) 20.00%   20.00% 51.00%
Carrying value     $ 420,000,000 $ 0
Virgin Atlantic        
Investments [Line Items]        
Ownership interest (percent)     49.00%  
Carrying value     $ 0  
LATAM        
Investments [Line Items]        
Carrying value     $ 0 $ 0.20
Estimated ownership pending restructuring process (percent)     10.00%  
Grupo Aeromexico        
Investments [Line Items]        
Investment in equity method investment $ 100,000,000      
LATAM        
Investments [Line Items]        
Noncurrent financing receivable     $ 71,000,000