Financial Information for Subsidiary Guarantors and Non-guarantor Subsidiaries - Condensed Consolidating Statement of Cash Flows (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	$ 6,249	$ 3,080	$ 675
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits	(6,151)	(5,311)	(3,114)
Purchases of short-term investments	(8,126)	(5,380)	(3,342)
Sales of short-term investments	8,517	7,179	2,161
Decrease in restricted cash and short-term investments	79	261	147
Net proceeds from slot transaction		307
Proceeds from sale of an investment	52
Proceeds from sale of property and equipment	35	33	128
Net cash provided by (used in) investing activities	(5,594)	(2,911)
Cash flows from financing activities:
Payments on long-term debt and capital leases	(2,153)	(3,132)	(2,926)
Proceeds from issuance of long-term debt	5,009	3,302	5,134
Deferred financing costs	(87)	(106)	(120)
Sale-leaseback transactions	43	811	1,700
Exercise of stock options		10
Treasury stock repurchases	(3,846)	(1,062)
Dividend payments	(278)	(144)
Other financing activities	53	6	11
Net cash provided by (used in) financing activities	(1,259)	(315)	3,799
Net increase (decrease) in cash	(604)	(146)	660
Cash at beginning of year	994	1,140	480
Cash at end of year	390	994	1,140
American Airlines, Inc. [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	2,587	2,578	627
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits	(6,075)	(5,256)	(3,099)
Purchases of short-term investments	(8,126)	(5,380)	(3,342)
Sales of short-term investments	8,517	7,179	2,159
Decrease in restricted cash and short-term investments	79	261	147
Net proceeds from slot transaction		307
Proceeds from sale of property and equipment	26	20	115
Cash flows from financing activities:
Payments on long-term debt and capital leases	(2,153)	(2,955)	(2,925)
Proceeds from issuance of long-term debt	4,509	2,552	5,134
Deferred financing costs	(80)	(95)	(120)
Sale-leaseback transactions	43	811	1,700
Funds transferred to affiliates, net		(176)	53
Other financing activities	53	6	9
Net cash provided by (used in) financing activities	2,372	143	3,851
Net increase (decrease) in cash	(620)	(148)	658
Cash at beginning of year	984	1,132	474
Cash at end of year	364	984	1,132
Reportable Legal Entities [Member] | American Airlines Group (Parent Company Only) [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	3,595	458
Cash flows from investing activities:
Proceeds from sale of an investment	52
Net cash provided by (used in) investing activities	52
Cash flows from financing activities:
Proceeds from issuance of long-term debt	500	750
Deferred financing costs	(7)	(11)
Exercise of stock options		10
Treasury stock repurchases	(3,846)	(1,062)
Dividend payments	(278)	(144)
Net cash provided by (used in) financing activities	(3,631)	(457)
Net increase (decrease) in cash	16	1
Cash at beginning of year	3	2
Cash at end of year	19	3	2
Reportable Legal Entities [Member] | American Airlines, Inc. [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	2,587	2,578
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits	(6,075)	(5,256)
Purchases of short-term investments	(8,126)	(5,380)
Sales of short-term investments	8,517	7,179
Decrease in restricted cash and short-term investments	79	261
Net proceeds from slot transaction		307
Proceeds from sale of property and equipment	26	20
Net cash provided by (used in) investing activities	(5,579)	(2,869)
Cash flows from financing activities:
Payments on long-term debt and capital leases	(2,153)	(2,955)
Proceeds from issuance of long-term debt	4,509	2,552
Deferred financing costs	(80)	(95)
Sale-leaseback transactions	43	811
Funds transferred to affiliates, net		(176)
Other financing activities	53	6
Net cash provided by (used in) financing activities	2,372	143
Net increase (decrease) in cash	(620)	(148)
Cash at beginning of year	984	1,132
Cash at end of year	364	984	1,132
Reportable Legal Entities [Member] | Non-Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by operating activities	67	44
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits	(76)	(55)
Proceeds from sale of property and equipment	9	13
Net cash provided by (used in) investing activities	(67)	(42)
Cash flows from financing activities:
Payments on long-term debt and capital leases		(1)
Net cash provided by (used in) financing activities		(1)
Net increase (decrease) in cash		1
Cash at beginning of year	7	6
Cash at end of year	$ 7	7	$ 6
Eliminations and Reclassifications [Member]
Cash flows from financing activities:
Payments on long-term debt and capital leases		(176)
Funds transferred to affiliates, net		$ 176