Financial Information for Subsidiary Guarantors and Non-guarantor Subsidiaries - Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Current assets
Cash	$ 1,016	$ 994	$ 1,178	$ 1,140
Short-term investments	7,857	6,309
Restricted cash and short-term investments	710	774
Accounts receivable, net	1,828	1,771
Aircraft fuel, spare parts and supplies, net	1,010	1,004
Prepaid expenses and other	1,285	1,260
Total current assets	13,706	12,112
Operating property and equipment	26,292	23,084
Other assets
Goodwill	4,091	4,091
Intangibles, net of accumulated amortization	2,261	2,240
Other assets	2,365	2,244
Total other assets	8,717	8,575
Total assets	48,715	43,771
Current liabilities
Current maturities of long-term debt and capital leases	1,712	1,708
Accounts payable	1,525	1,377
Air traffic liability	4,811	4,252
Frequent flyer liability	2,649	2,807
Other accrued liabilities	3,464	3,291
Total current liabilities	14,161	13,435
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	18,849	16,196
Pension and postretirement benefits	7,433	7,562
Bankruptcy settlement obligations	177	325
Other liabilities	4,333	4,232
Total noncurrent liabilities	30,792	28,315
Stockholders' equity (deficit)
Common stock	6	7
Additional paid-in capital	12,852	15,135
Accumulated other comprehensive loss	(4,651)	(4,559)
Retained earnings (deficit)	(4,445)	(8,562)
Total stockholders' equity (deficit)	3,762	2,021
Total liabilities and stockholders' equity (deficit)	48,715	43,771
Eliminations and Reclassifications [Member]
Current assets
Accounts receivable, net	(12)	(13)
Receivables from related parties, net	(1,201)	(3,509)
Prepaid expenses and other		(155)
Total current assets	(1,213)	(3,677)
Other assets
Investments in subsidiaries	(13,223)	(7,717)
Goodwill	1	1
Other assets	(32)	(35)
Total other assets	(13,254)	(7,751)
Total assets	(14,467)	(11,428)
Current liabilities
Accounts payable	(2)
Payables to related parties, net	(1,201)	(3,509)
Other accrued liabilities	1	(3)
Total current liabilities	(1,202)	(3,512)
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	(35)	(35)
Other liabilities	(813)	(562)
Total noncurrent liabilities	(848)	(597)
Stockholders' equity (deficit)
Additional paid-in capital	(21,429)	(21,076)
Accumulated other comprehensive loss	4,777	4,681
Retained earnings (deficit)	4,235	9,076
Total stockholders' equity (deficit)	(12,417)	(7,319)
Total liabilities and stockholders' equity (deficit)	(14,467)	(11,428)
American Airlines Group (Parent Company Only) [Member]
Current assets
Cash	1	1		1
Receivables from related parties, net	65	1,893
Prepaid expenses and other	82
Total current assets	148	1,894
Other assets
Investments in subsidiaries	5,143	847
Other assets	27	53
Total other assets	5,170	900
Total assets	5,318	2,794
Current liabilities
Other accrued liabilities	186	14
Total current liabilities	186	14
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	1,257	758
Other liabilities	113	1
Total noncurrent liabilities	1,370	759
Stockholders' equity (deficit)
Common stock	6	7
Additional paid-in capital	12,852	15,135
Accumulated other comprehensive loss	(4,651)	(4,559)
Retained earnings (deficit)	(4,445)	(8,562)
Total stockholders' equity (deficit)	3,762	2,021
Total liabilities and stockholders' equity (deficit)	5,318	2,794
American Airlines, Inc. [Member]
Current assets
Cash	806	785	1,008	829
Short-term investments	5,405	3,290
Restricted cash and short-term investments	657	650
Accounts receivable, net	1,490	1,445
Aircraft fuel, spare parts and supplies, net	632	625
Prepaid expenses and other	795	462
Total current assets	9,785	7,257
Operating property and equipment	19,200	16,299
Other assets
Intangibles, net of accumulated amortization	871	815
Other assets	1,826	1,921
Total other assets	2,697	2,736
Total assets	31,682	26,292
Current liabilities
Current maturities of long-term debt and capital leases	1,212	1,230
Accounts payable	1,269	1,029
Payables to related parties, net	565	2,563
Air traffic liability	4,373	2,989
Frequent flyer liability	2,649	1,823
Other accrued liabilities	2,043	1,886
Total current liabilities	12,111	11,520
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	12,040	10,004
Pension and postretirement benefits	7,270	7,400
Bankruptcy settlement obligations	177	325
Other liabilities	2,927	2,615
Total noncurrent liabilities	22,414	20,344
Stockholders' equity (deficit)
Common stock	0	0
Additional paid-in capital	10,833	10,632
Accumulated other comprehensive loss	(4,734)	(4,645)
Retained earnings (deficit)	(8,942)	(11,559)
Total stockholders' equity (deficit)	(2,843)	(5,572)
Total liabilities and stockholders' equity (deficit)	31,682	26,292
US Airways Group [Member]
Current assets
Cash	19	2	1	1
Receivables from related parties, net		157
Total current assets	19	159
Other assets
Investments in subsidiaries	8,080	6,870
Total other assets	8,080	6,870
Total assets	8,099	7,029
Current liabilities
Payables to related parties, net	511	634
Other accrued liabilities	11	3
Total current liabilities	522	637
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	525	524
Total noncurrent liabilities	525	524
Stockholders' equity (deficit)
Additional paid-in capital	4,779	4,703
Accumulated other comprehensive loss	(19)	(16)
Retained earnings (deficit)	2,292	1,181
Total stockholders' equity (deficit)	7,052	5,868
Total liabilities and stockholders' equity (deficit)	8,099	7,029
US Airways [Member]
Current assets
Cash	181	199	164	303
Short-term investments	2,449	3,016
Restricted cash and short-term investments	53	124
Accounts receivable, net	336	324
Receivables from related parties, net	1,024	933
Aircraft fuel, spare parts and supplies, net	320	294
Prepaid expenses and other	367	912
Total current assets	4,730	5,802
Operating property and equipment	6,813	6,506
Other assets
Goodwill	4,090	4,090
Intangibles, net of accumulated amortization	1,390	1,425
Other assets	489	267
Total other assets	5,969	5,782
Total assets	17,512	18,090
Current liabilities
Current maturities of long-term debt and capital leases	500	477
Accounts payable	213	287
Payables to related parties, net		73
Air traffic liability	438	1,263
Frequent flyer liability		984
Other accrued liabilities	1,114	1,253
Total current liabilities	2,265	4,337
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	5,062	4,945
Pension and postretirement benefits	123	122
Other liabilities	2,057	1,861
Total noncurrent liabilities	7,242	6,928
Stockholders' equity (deficit)
Additional paid-in capital	5,618	5,542
Accumulated other comprehensive loss	(12)	(8)
Retained earnings (deficit)	2,399	1,291
Total stockholders' equity (deficit)	8,005	6,825
Total liabilities and stockholders' equity (deficit)	17,512	18,090
Non-Guarantor Subsidiaries [Member]
Current assets
Cash	9	7	$ 5	$ 6
Short-term investments	3	3
Accounts receivable, net	14	15
Receivables from related parties, net	112	526
Aircraft fuel, spare parts and supplies, net	58	85
Prepaid expenses and other	41	41
Total current assets	237	677
Operating property and equipment	279	279
Other assets
Other assets	55	38
Total other assets	55	38
Total assets	571	994
Current liabilities
Current maturities of long-term debt and capital leases		1
Accounts payable	45	61
Payables to related parties, net	125	239
Other accrued liabilities	109	138
Total current liabilities	279	439
Noncurrent liabilities
Pension and postretirement benefits	40	40
Other liabilities	49	317
Total noncurrent liabilities	89	357
Stockholders' equity (deficit)
Additional paid-in capital	199	199
Accumulated other comprehensive loss	(12)	(12)
Retained earnings (deficit)	16	11
Total stockholders' equity (deficit)	203	198
Total liabilities and stockholders' equity (deficit)	$ 571	$ 994