Regional Expenses (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Product Information [Line Items]
Aircraft fuel and related taxes	$ 538	$ 270	$ 1,573	$ 795
Salaries, wages and benefits	267	165	803	504
Capacity purchases from third-party regional carriers	380	50	1,102	130
Maintenance, materials and repairs	94	70	263	210
Other rent and landing fees	109	59	311	176
Aircraft rent	9	0	26	0
Selling expenses	79	35	238	106
Depreciation and amortization	52	41	156	124
Special items, net	2	0	7	3
Other	138	95	440	286
Total regional expenses	1,668	785	4,919	2,334
AA [Member]
Product Information [Line Items]
Aircraft fuel and related taxes	264	269	787	794
Salaries, wages and benefits	9	5	24	15
Capacity purchases from third-party regional carriers	314	314	932	926
Other rent and landing fees	61	54	177	162
Selling expenses	40	35	116	106
Depreciation and amortization	36	37	110	111
Special items, net	2	0	4	0
Other	64	65	202	192
Total regional expenses	$ 790	$ 779	$ 2,352	$ 2,306