Transactions with Related Parties - Net Receivables (Payables) to Related Parties (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
AAG's wholly-owned subsidiaries	$ (2,455)	$ (2,353)
Regional expenses	5,042	4,643	$ 4,385
American Airlines, Inc.
Related Party Transaction [Line Items]
AAG's wholly-owned subsidiaries	(2,372)	(2,232)
Total	8,187	7,070
Regional expenses	5,009	4,619	$ 4,345
American Airlines, Inc. \| AAG
Related Party Transaction [Line Items]
AAG	10,258	9,144
American Airlines, Inc. \| AAG's Wholly-owned Subsidiaries
Related Party Transaction [Line Items]
AAG's wholly-owned subsidiaries	$ (2,071)	$ (2,074)

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount, before allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

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Amount, after allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

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