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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2025
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, 2025$797 $129 $(26)$900 
Year ended December 31, 2024728 116 (47)797 
Year ended December 31, 2023616 98 14 728 
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, 2025$745 $95 $5 $845 
Year ended December 31, 2024675 94 (24)745 
Year ended December 31, 2023566 83 26 675