Employee Benefit Plans - Schedule of Assumption Used to Determine Benefit Obligations (Parenthetical) (Detail)	12 Months Ended
Dec. 31, 2016
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Weighted average healthcare cost trend rate assumed to decline gradually	3.77%
American Airlines, Inc. [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Weighted average healthcare cost trend rate assumed to decline gradually	3.77%

The ultimate trend rate for health care costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (l)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration