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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]  
Valuation and Qualifying Accounts Valuation and Qualifying Accounts (in millions)
Balance at Beginning 
of Year		Additions Charged to Statement of Operations AccountsDeductions
and Other		Balance at
End of Year
Allowance for obsolescence of spare parts
Year ended December 31, 2024$728 $116 $(47)$797 
Year ended December 31, 2023616 98 14 728 
Year ended December 31, 2022634 96 (114)616 
American Airlines, Inc.  
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]  
Valuation and Qualifying Accounts Valuation and Qualifying Accounts (in millions)
Balance at Beginning 
of Year		Additions Charged to Statement of Operations AccountsDeductions
and Other		Balance at
End of Year
Allowance for obsolescence of spare parts
Year ended December 31, 2024$675 $94 $(24)$745 
Year ended December 31, 2023566 83 26 675 
Year ended December 31, 2022588 82 (104)566