Debt - Summary of Availability under Revolving Credit Facilities (Detail) - Revolving Credit Facility [Member] - Secured Debt [Member]	Mar. 31, 2016 USD ($)
Line of Credit Facility [Line Items]
Revolving Facility	$ 2,425,000,000
2013 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Revolving Facility	1,400,000,000
2014 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Revolving Facility	1,025,000,000
American Airlines, Inc. [Member]
Line of Credit Facility [Line Items]
Revolving Facility	2,425,000,000
American Airlines, Inc. [Member] | 2013 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Revolving Facility	1,400,000,000
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Revolving Facility	$ 1,025,000,000