Regional Expenses (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Product Information [Line Items]
Aircraft fuel and related taxes	$ 500	$ 265
Salaries, wages and benefits	265	173
Capacity purchases from third-party regional carriers	347	34
Maintenance, materials and repairs	87	70
Other rent and landing fees	96	59
Aircraft rent	14	1
Selling expenses	72	37
Depreciation and amortization	53	42
Special items, net	4	2
Other	156	97
Total regional expenses	1,594	780
AA [Member]
Product Information [Line Items]
Aircraft fuel and related taxes	252	265
Salaries, wages and benefits	5	5
Capacity purchases from third-party regional carriers	296	303
Maintenance, materials and repairs	1	1
Other rent and landing fees	55	54
Aircraft rent	5	1
Selling expenses	36	37
Depreciation and amortization	37	37
Special items, net	1	0
Other	70	63
Total regional expenses	$ 758	$ 766