Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current assets
Cash	$ 303	$ 295
Short-term investments	4,552	4,771
Restricted cash and short-term investments	154	318
Accounts receivable, net	2,170	1,752
Aircraft fuel, spare parts and supplies, net	1,576	1,359
Prepaid expenses and other	743	651
Total current assets	9,498	9,146
Operating property and equipment
Flight equipment	40,983	40,318
Ground property and equipment	9,187	8,267
Equipment purchase deposits	1,330	1,217
Total property and equipment, at cost	51,500	49,802
Less accumulated depreciation and amortization	(17,277)	(15,646)
Total property and equipment, net	34,223	34,156
Other assets
Goodwill	4,091	4,091
Intangibles, net of accumulated amortization of $653 and $622, respectively	2,147	2,203
Deferred tax asset	1,293	1,816
Other assets	1,383	1,373
Total other assets	8,914	9,483
Total assets	52,635	52,785
Current liabilities
Current maturities of long-term debt and capital leases	2,493	2,554
Accounts payable	1,886	1,688
Accrued salaries and wages	1,386	1,672
Other accrued liabilities	2,301	2,281
Total current liabilities	16,348	15,358
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	22,274	22,511
Pension and postretirement benefits	6,898	7,497
Loyalty program liability	5,317	5,701
Other liabilities	2,366	2,498
Total noncurrent liabilities	36,855	38,207
Commitments and contingencies
Stockholders’ equity (deficit)
Common stock	5	5
Additional paid-in capital	4,946	5,714
Accumulated other comprehensive loss	(5,203)	(5,154)
Accumulated deficit	(316)	(1,345)
Total stockholders’ deficit	(568)	(780)
Total liabilities and stockholders’ equity (deficit)	52,635	52,785
Air traffic liability [Member]
Current liabilities
Deferred revenue, current	5,040	4,042
Loyalty program liability [Member]
Current liabilities
Deferred revenue, current	3,242	3,121
Noncurrent liabilities
Loyalty program liability		5,701
American Airlines, Inc. [Member]
Current assets
Cash	294	287
Short-term investments	4,542	4,768
Restricted cash and short-term investments	154	318
Accounts receivable, net	2,222	1,755
Receivables from related parties, net	10,525	8,822
Aircraft fuel, spare parts and supplies, net	1,506	1,294
Prepaid expenses and other	739	647
Total current assets	19,982	17,891
Operating property and equipment
Flight equipment	40,669	39,993
Ground property and equipment	8,906	8,006
Equipment purchase deposits	1,330	1,217
Total property and equipment, at cost	50,905	49,216
Less accumulated depreciation and amortization	(16,964)	(15,354)
Total property and equipment, net	33,941	33,862
Other assets
Goodwill	4,091	4,091
Intangibles, net of accumulated amortization of $653 and $622, respectively	2,147	2,203
Deferred tax asset	1,429	2,071
Other assets	1,280	1,283
Total other assets	8,947	9,648
Total assets	62,870	61,401
Current liabilities
Current maturities of long-term debt and capital leases	2,497	2,058
Accounts payable	1,822	1,625
Accrued salaries and wages	1,332	1,613
Other accrued liabilities	2,213	2,209
Total current liabilities	16,146	14,668
Noncurrent liabilities
Long-term debt and capital leases, net of current maturities	20,995	21,236
Pension and postretirement benefits	6,855	7,452
Loyalty program liability	5,317	5,701
Other liabilities	2,317	2,456
Total noncurrent liabilities	35,484	36,845
Commitments and contingencies
Stockholders’ equity (deficit)
Common stock	0	0
Additional paid-in capital	16,783	16,716
Accumulated other comprehensive loss	(5,301)	(5,251)
Accumulated deficit	(242)	(1,577)
Total stockholders’ deficit	11,240	9,888
Total liabilities and stockholders’ equity (deficit)	62,870	61,401
American Airlines, Inc. [Member] | Air traffic liability [Member]
Current liabilities
Deferred revenue, current	5,040	4,042
American Airlines, Inc. [Member] | Loyalty program liability [Member]
Current liabilities
Deferred revenue, current	$ 3,242	3,121
Noncurrent liabilities
Loyalty program liability		$ 5,701