Debt - Guarantees (Details)	Dec. 31, 2018 USD ($)
Secured Debt [Member] \| Special Facility Revenue Bonds [Member]
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 769,000,000
Secured Debt [Member] \| Credit Facilities And Certain EETC Financings [Member]
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 8,400,000,000
Unsecured Debt [Member] \| Senior Notes 5.50% Due in 2019 [Member]
Debt Instrument [Line Items]
Fixed interest rate	5.50%
Unsecured Debt [Member] \| Senior Notes 4.625% Due in 2020 [Member]
Debt Instrument [Line Items]
Fixed interest rate	4.625%
American Airlines, Inc. [Member] \| Unsecured Debt [Member] \| Senior Notes 5.50% Due in 2019 [Member]
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 750,000,000
American Airlines, Inc. [Member] \| Unsecured Debt [Member] \| Senior Notes 4.625% Due in 2020 [Member]
Debt Instrument [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 500,000,000

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=6877327&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=115931803&loc=d3e12069-110248

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