Debt - Guarantees (Details) - Unsecured Debt	Dec. 31, 2020 USD ($)
Senior Notes 5.000% Due 2022
Debt Instrument [Line Items]
Fixed interest rate per annum	5.00%
Senior Notes 3.75% Matures 2025
Debt Instrument [Line Items]
Fixed interest rate per annum	3.75%
Senior Notes 6.50% Due 2025
Debt Instrument [Line Items]
Fixed interest rate per annum	6.50%
American Airlines, Inc. \| Senior Notes 5.000% Due 2022
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 750,000,000
American Airlines, Inc. \| Senior Notes 3.75% Matures 2025
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 500,000,000
Fixed interest rate per annum	3.75%
American Airlines, Inc. \| Senior Notes 6.50% Due 2025
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 1,000,000,000.0
Fixed interest rate per annum	6.50%
American Airlines, Inc. \| PSP1, CAREs Act
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 1,800,000,000

Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

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