Transactions with Related Parties (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Related Party Transaction [Line Items]
AAG’s wholly-owned subsidiaries	$ (3,130)	$ (2,455)
American Airlines, Inc.
Related Party Transaction [Line Items]
AAG’s wholly-owned subsidiaries	(3,037)	(2,372)
Total	8,570	8,187
American Airlines, Inc. | Total
Related Party Transaction [Line Items]
Total	8,570	8,187
American Airlines, Inc. | AAG
Related Party Transaction [Line Items]
AAG	10,622	10,258
American Airlines, Inc. | AAG's wholly-owned subsidiaries
Related Party Transaction [Line Items]
AAG’s wholly-owned subsidiaries	$ (2,052)	$ (2,071)