Commitments, Contingencies and Guarantees - Aircraft, Engine and Other Purchase Commitments (Details) $ in Millions	Dec. 31, 2023 USD ($) aircraft	Dec. 31, 2022 USD ($)
Purchase Obligations
Equipment purchase deposits	$ 760	$ 613
B-787-9
Purchase Obligations
Number of aircraft, deferrable, scheduled to be delivered in 2024 \| aircraft	5
Aircraft Fuel, Flight Equipment Maintenance and Information Technology Support
Unrecorded Unconditional Purchase Obligations
2024	$ 4,700
2025	2,000
2026	1,400
2027	150
2028	124
2029 and thereafter	843
Aircraft and Engine Commitments
Purchase Obligations
2024	2,410
2025	3,725
2026	3,580
2027	1,118
2028	829
2029 and Thereafter	645
Total	12,307
American Airlines, Inc.
Purchase Obligations
Equipment purchase deposits	760	$ 613
American Airlines, Inc. \| Aircraft Fuel, Flight Equipment Maintenance and Information Technology Support
Unrecorded Unconditional Purchase Obligations
2024	4,700
2025	2,000
2026	1,400
2027	150
2028	124
2029 and thereafter	843
American Airlines, Inc. \| Aircraft and Engine Commitments
Purchase Obligations
2024	2,410
2025	3,725
2026	3,580
2027	1,118
2028	829
2029 and Thereafter	645
Total	$ 12,307

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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