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Contingencies (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
May 31, 2022
Apr. 30, 2022
Apr. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Jun. 30, 2023
Dec. 31, 2016
Jun. 30, 2023
VAT Tax Matters                    
Loss Contingencies [Line Items]                    
Accrual related to other taxes matters               $ 9,000,000   $ 9,000,000
US Airways Litigation                    
Loss Contingencies [Line Items]                    
Damages awarded         $ 15,000,000       $ 15,000,000  
Litigation accrual             $ 32,000,000   32,000,000  
Attorney fees and expenses                 $ 17,000,000  
US Airways Litigation | Minimum                    
Loss Contingencies [Line Items]                    
Damages sought           $ 317,000,000        
US Airways Litigation | Maximum                    
Loss Contingencies [Line Items]                    
Damages sought           482,000,000        
US Airways Litigation | US Airways                    
Loss Contingencies [Line Items]                    
Damages sought           125,000,000        
Damages awarded           $ 15,000,000 $ 5,000,000      
US Airways Litigation, Retrial                    
Loss Contingencies [Line Items]                    
Damages paid   $ 3.05                
US Airways Litigation, Retrial | Minimum                    
Loss Contingencies [Line Items]                    
Damages sought       $ 204,000,000            
US Airways Litigation, Retrial | Maximum                    
Loss Contingencies [Line Items]                    
Damages sought       $ 299,000,000            
US Airways Litigation, Retrial | US Airways                    
Loss Contingencies [Line Items]                    
Damages sought $ 139,000,000                  
Damages awarded   $ 3.00 $ 1.00              
Indian Income Tax Litigation | Foreign Tax Authority                    
Loss Contingencies [Line Items]                    
Interest and penalties related to income taxes                   $ 21,000,000