Regional Expenses (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Regional Expenses [Line Items]
Aircraft fuel and related taxes	$ 1,402	$ 1,029
Salaries, wages and benefits	2,825	2,652
Maintenance, materials and repairs	492	419
Other rent and landing fees	440	422
Aircraft rent	295	306
Selling expenses	318	308
Depreciation and amortization	405	355
Special items, net	119	99
Other	1,154	1,078
Total regional expenses	1,573	1,432
American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	1,402	1,029
Salaries, wages and benefits	2,823	2,650
Maintenance, materials and repairs	492	419
Other rent and landing fees	440	422
Aircraft rent	295	306
Selling expenses	318	308
Depreciation and amortization	405	355
Special items, net	119	99
Other	1,154	1,080
Total regional expenses	1,569	1,436
Regional Carrier [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	318	219
Salaries, wages and benefits	345	326
Capacity purchases from third-party regional carriers	393	394
Maintenance, materials and repairs	69	95
Other rent and landing fees	152	128
Aircraft rent	9	9
Selling expenses	80	78
Depreciation and amortization	79	68
Special items, net	2	5
Other	126	110
Total regional expenses	1,573	1,432
Regional Carrier [Member] | American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	318	219
Salaries, wages and benefits	75	84
Capacity purchases from third-party regional carriers	801	814
Maintenance, materials and repairs	1	1
Other rent and landing fees	146	109
Aircraft rent	7	7
Selling expenses	80	78
Depreciation and amortization	64	54
Special items, net	2	5
Other	75	65
Total regional expenses	$ 1,569	$ 1,436