Debt - Guarantees (Details)	Dec. 31, 2021 USD ($)
Secured Debt
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 19,800,000,000
Secured Debt \| Special Facility Revenue Bonds
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 1,100,000,000
Unsecured Debt \| Senior Notes 6.50% Due 2025
Debt Instrument [Line Items]
Fixed interest rate per annum	6.50%
Unsecured Debt \| Senior Notes 5.000% Due 2022
Debt Instrument [Line Items]
Fixed interest rate per annum	5.00%
Unsecured Debt \| Senior Notes 3.75% Matures 2025
Debt Instrument [Line Items]
Fixed interest rate per annum	3.75%
American Airlines, Inc. \| Unsecured Debt \| PSP1 Promissory Note
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 1,800,000,000
American Airlines, Inc. \| Unsecured Debt \| PSP2 Promissory Note
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	1,000,000,000
American Airlines, Inc. \| Unsecured Debt \| PSP3 Promissory Note
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	946,000,000
American Airlines, Inc. \| Unsecured Debt \| Senior Notes 6.50% Due 2025
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 1,000,000,000
Fixed interest rate per annum	6.50%
American Airlines, Inc. \| Unsecured Debt \| Senior Notes 5.000% Due 2022
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 750,000,000
American Airlines, Inc. \| Unsecured Debt \| 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%

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611

Reference 2: 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.

+ References

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=124440162&loc=d3e12069-110248

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