Subsequent Event (Details) - USD ($)	1 Months Ended	3 Months Ended												12 Months Ended
	Jan. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 30, 2019	Oct. 31, 2019
Subsequent Event [Line Items]
Dividends declared on common stock (in dollars per share)		$ 0.10	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.40	$ 0.40	$ 0.40
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends declared on common stock (in dollars per share)	$ 0.10
Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity		$ 3,243,000,000												$ 3,243,000,000
2014 Credit Facilities [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity		1,643,000,000												1,643,000,000
2014 Credit Facilities [Member] | Secured Debt [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity		1,643,000,000												$ 1,643,000,000			$ 1,600,000,000	$ 1,500,000,000
2014 Credit Facilities [Member] | Secured Debt [Member] | LIBOR [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Basis spread on variable rate														2.00%
2014 Credit Facilities [Member] | Secured Debt [Member] | LIBOR [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,220,000,000
Basis spread on variable rate	1.75%
Floor interest rate	0.00%
2014 Credit Facilities [Member] | Secured Debt [Member] | Base Rate [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Basis spread on variable rate														1.00%
2014 Credit Facilities [Member] | Secured Debt [Member] | Base Rate [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	0.75%
American Airlines, Inc. [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity		3,243,000,000												$ 3,243,000,000
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity		1,643,000,000												1,643,000,000
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member] | Secured Debt [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity																	$ 1,600,000,000	$ 1,500,000,000
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member] | Secured Debt [Member] | LIBOR [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity		$ 1,643,000,000												$ 1,643,000,000
Basis spread on variable rate														2.00%
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member] | Secured Debt [Member] | LIBOR [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,220,000,000
Basis spread on variable rate	1.75%
Floor interest rate	0.00%
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member] | Secured Debt [Member] | Base Rate [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Basis spread on variable rate														1.00%
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member] | Secured Debt [Member] | Base Rate [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Basis spread on variable rate	0.75%