Revenue Recognition - Narrative (Details) - Air traffic liability $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Contract term	one year
Revenue recognition term	12 months
Recognition of revenue	$ 838
Travel credits related to unused tickets	$ 2,100
New revenue recognition term in response to Covid-19	12 months
American Airlines, Inc.
Disaggregation of Revenue [Line Items]
Recognition of revenue	$ 838

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Contract With Customer, Liability, Travel Credits

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130549-203045

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Description of timing for satisfying performance obligation in contract with customer. Includes, but is not limited to, as services are rendered, and upon shipment, delivery or completion of service.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
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