Debt - Components of Long-Term Debt - Equipment Loans and Other Notes Payable Issued in 2017 (Detail) - Secured Debt [Member] - Equipment Loans and Other Notes Payable [Member] $ in Millions	3 Months Ended
Mar. 31, 2017 USD ($)
Debt Instrument [Line Items]
Proceeds from notes payable	$ 155
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Proceeds from notes payable	$ 155

The cash inflow from borrowings supported by a written promise to pay an obligation that is collateralized (backed by pledge, mortgage or other lien in the entity's assets).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration