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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2023
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, 2023$616 $98 $14 $728 
Year ended December 31, 2022634 96 (114)616 
Year ended December 31, 2021490 177 (33)634 
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, 2023$566 $83 $26 $675 
Year ended December 31, 2022588 82 (104)566 
Year ended December 31, 2021442 165 (19)588