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Transactions with Related Parties (Details) - USD ($) $ in Millions		9 Months Ended
	Jul. 01, 2025	Sep. 30, 2025	Dec. 31, 2024
Related Party Transaction [Line Items]
AAG’s wholly-owned subsidiaries		$ (2,833)	$ (2,455)
6.50% Senior Notes \| Senior Notes
Related Party Transaction [Line Items]
Settlement of convertible debt	$ 1,000
Interest rate		6.50%
American Airlines, Inc.
Related Party Transaction [Line Items]
AAG’s wholly-owned subsidiaries		$ (2,723)	(2,372)
Total		9,754	8,187
American Airlines, Inc. \| Total
Related Party Transaction [Line Items]
Total		9,754	8,187
American Airlines, Inc. \| AAG
Related Party Transaction [Line Items]
AAG		11,818	10,258
American Airlines, Inc. \| AAG \| 6.50% Senior Notes \| Senior Notes
Related Party Transaction [Line Items]
Settlement of convertible debt		$ 1,000
Interest rate		6.50%
American Airlines, Inc. \| AAG's wholly-owned subsidiaries
Related Party Transaction [Line Items]
AAG’s wholly-owned subsidiaries		$ (2,064)	$ (2,071)