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Contingencies (Details) - USD ($)
1 Months Ended 9 Months Ended
Oct. 07, 2024
Jun. 30, 2023
Jun. 30, 2022
May 31, 2022
Dec. 31, 2016
Sep. 30, 2024
Sep. 30, 2022
VAT Tax Matters              
Loss Contingencies [Line Items]              
Other taxes matters accrued           $ 14,000,000  
US Airways Litigation | US Airways              
Loss Contingencies [Line Items]              
Damages awarded         $ 5,000,000    
US Airways Litigation, Retrial              
Loss Contingencies [Line Items]              
Damages paid     $ 3.05        
Estimated loss accrued             $ 15,000,000
US Airways Litigation, Retrial | US Airways              
Loss Contingencies [Line Items]              
Damages awarded     $ 3.00 $ 1.00      
Damages sought   $ 139,000,000          
US Airways Litigation, Retrial | US Airways | Subsequent Event              
Loss Contingencies [Line Items]              
Damages sought $ 139,000,000            
Indian Income Tax Litigation | Foreign Tax Authority              
Loss Contingencies [Line Items]              
Interest and penalties related to income taxes           $ 26,000,000