Commitments, Contingencies and Guarantees - Aircraft, Engine and Other Purchase Commitments (Details) $ in Millions	Dec. 31, 2019 USD ($) Aircraft	Dec. 31, 2018 USD ($)
Purchase Obligations
Equipment purchase deposits	$ 1,674	$ 1,278
Number of aircraft ordered, not delivered \| Aircraft	76
Number of aircraft ordered, not delivered, to be financed under sale-leaseback financing \| Aircraft	22
Jet Fuel, Facility Construction Projects and Information Technology Support [Member]
Unrecorded Unconditional Purchase Obligations
2020	$ 3,500
2021	3,500
2022	1,300
2023	130
2024	81
Aircraft and Engine Purchase Commitments [Member]
Purchase Obligations
2020	1,629
2021	750
2022	1,599
2023	1,543
2024	2,574
2025 and Thereafter	4,855
Total	12,950
American Airlines, Inc. [Member]
Purchase Obligations
Equipment purchase deposits	$ 1,674	$ 1,277
Number of aircraft ordered, not delivered \| Aircraft	76
Number of aircraft ordered, not delivered, to be financed under sale-leaseback financing \| Aircraft	22
American Airlines, Inc. [Member] \| Jet Fuel, Facility Construction Projects and Information Technology Support [Member]
Unrecorded Unconditional Purchase Obligations
2020	$ 3,500
2021	3,500
2022	1,300
2023	130
2024	81
2025 and thereafter	77
American Airlines, Inc. [Member] \| Aircraft and Engine Purchase Commitments [Member]
Purchase Obligations
2020	1,629
2021	750
2022	1,599
2023	1,543
2024	2,574
2025 and Thereafter	4,855
Total	$ 12,950

Number Of Aircraft Ordered, Not Delivered

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Number Of Aircraft Ordered, Not Delivered, To Be Financed Under Sale-Leaseback Transaction

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Carrying amount, at the balance sheet date, of deposits made to the manufacturer for new flight equipment still under construction. May include capitalized interest.

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Minimum amount of purchase arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

+ References

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Minimum amount of purchase arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Minimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Minimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Amount of the fixed and determinable portion of the unrecorded unconditional purchase obligation maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
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