American Airlines (AAL) 10-Q 25 Oct 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 19, 2018
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	AAL
Entity Registrant Name	American Airlines Group Inc.
Entity Central Index Key	6,201
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		460,581,463
American Airlines, Inc. [Member]
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Entity Registrant Name	AMERICAN AIRLINES INC
Entity Central Index Key	4,515
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		1,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Operating revenues:
Operating revenues	$ 11,559	$ 10,965	$ 33,603	$ 32,011
Operating expenses:
Aircraft fuel and related taxes	2,234	1,570	6,100	4,481
Salaries, wages and benefits	3,129	3,030	9,240	8,928
Regional expenses	1,833	1,654	5,323	4,848
Maintenance, materials and repairs	526	487	1,499	1,474
Other rent and landing fees	497	471	1,448	1,363
Aircraft rent	312	304	921	892
Selling expenses	395	400	1,136	1,094
Depreciation and amortization	473	433	1,382	1,255
Special items, net	215	112	563	432
Other	1,296	1,248	3,883	3,652
Total operating expenses	10,910	9,709	31,495	28,419
Operating income	649	1,256	2,108	3,592
Nonoperating income (expense):
Interest income	29	25	84	70
Interest expense, net	(265)	(266)	(795)	(787)
Other income, net	43	48	101	112
Total nonoperating expense, net	(193)	(193)	(610)	(605)
Income before income taxes	456	1,063	1,498	2,987
Income tax provision	115	402	404	1,122
Net income	$ 341	$ 661	$ 1,094	$ 1,865
Earnings per common share:
Basic (in dollars per share)	$ 0.74	$ 1.36	$ 2.35	$ 3.78
Diluted (in dollars per share)	$ 0.74	$ 1.36	$ 2.34	$ 3.76
Weighted average shares outstanding (in thousands):
Basic (in shares)	460,526	484,772	465,452	493,164
Diluted (in shares)	461,507	486,625	466,908	495,796
Cash dividends declared per common share (in dollars per share)	$ 0.1	$ 0.1	$ 0.3000	$ 0.3
Passenger [Member]
Operating revenues:
Operating revenues	$ 10,561	$ 10,096	$ 30,714	$ 29,447
Cargo [Member]
Operating revenues:
Operating revenues	260	223	748	633
Other [Member]
Operating revenues:
Operating revenues	738	646	2,141	1,931
American Airlines, Inc. [Member]
Operating revenues:
Operating revenues	11,556	10,962	33,594	32,003
Operating expenses:
Aircraft fuel and related taxes	2,234	1,570	6,100	4,481
Salaries, wages and benefits	3,127	3,027	9,231	8,920
Regional expenses	1,810	1,662	5,275	4,860
Maintenance, materials and repairs	526	487	1,499	1,474
Other rent and landing fees	497	471	1,448	1,363
Aircraft rent	312	304	921	892
Selling expenses	395	400	1,136	1,094
Depreciation and amortization	473	433	1,382	1,255
Special items, net	215	112	563	432
Other	1,298	1,247	3,885	3,652
Total operating expenses	10,887	9,713	31,440	28,423
Operating income	669	1,249	2,154	3,580
Nonoperating income (expense):
Interest income	85	56	240	158
Interest expense, net	(262)	(250)	(771)	(738)
Other income, net	44	48	102	112
Total nonoperating expense, net	(133)	(146)	(429)	(468)
Income before income taxes	536	1,103	1,725	3,112
Income tax provision	133	417	467	1,170
Net income	403	686	1,258	1,942
American Airlines, Inc. [Member] | Passenger [Member]
Operating revenues:
Operating revenues	10,561	10,096	30,714	29,447
American Airlines, Inc. [Member] | Cargo [Member]
Operating revenues:
Operating revenues	260	223	748	633
American Airlines, Inc. [Member] | Other [Member]
Operating revenues:
Operating revenues	$ 735	$ 643	$ 2,132	$ 1,923

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net income	$ 341	$ 661	$ 1,094	$ 1,865
Other comprehensive loss, net of tax:
Pension, retiree medical and other postretirement benefits	(17)	(15)	(49)	(44)
Total comprehensive income	324	646	1,045	1,821
American Airlines, Inc. [Member]
Net income	403	686	1,258	1,942
Other comprehensive loss, net of tax:
Pension, retiree medical and other postretirement benefits	(17)	(15)	(50)	(44)
Total comprehensive income	$ 386	$ 671	$ 1,208	$ 1,898

Condensed Consolidated Balance

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

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Accumulated amortization of intangibles	$ 653	$ 622
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,750,000,000	1,750,000,000
Common stock, shares issued (in shares)	460,559,470	475,507,887
Common stock, shares outstanding (in shares)	460,559,470	475,507,887
American Airlines, Inc. [Member]
Accumulated amortization of intangibles	$ 653	$ 622
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	1,000	1,000
Common stock, shares issued (in shares)	1,000	1,000
Common stock, shares outstanding (in shares)	1,000	1,000

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017
Net cash provided by operating activities		$ 2,804	$ 4,307
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits		(2,736)	(4,563)
Proceeds from sale of property and equipment and sale-leaseback transactions		860	831
Purchases of short-term investments		(2,590)	(4,093)
Sales of short-term investments		2,816	4,714
Decrease in restricted short-term investments		72	235
Purchase of equity investment		0	(203)
Other investing activities		(5)	0
Net cash used in investing activities		(1,583)	(3,079)
Cash flows from financing activities:
Proceeds from issuance of long-term debt		2,149	2,160
Payments on long-term debt and capital leases		(2,442)	(1,813)
Deferred financing costs		(48)	(66)
Treasury stock repurchases		(837)	(1,372)
Dividend payments		(140)	(150)
Other financing activities		13	21
Net cash provided by (used in) financing activities		(1,305)	(1,220)
Net increase (decrease) in cash and restricted cash		(84)	8
Cash and restricted cash at beginning of period		398	436
Cash and restricted cash at end of period	[1]	314	444
Supplemental information:
Interest paid, net		801	778
Income taxes paid		16	15
American Airlines, Inc. [Member]
Net cash provided by operating activities		1,282	2,738
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits		(2,697)	(4,501)
Proceeds from sale of property and equipment and sale-leaseback transactions		855	816
Purchases of short-term investments		(2,582)	(4,093)
Sales of short-term investments		2,816	4,714
Decrease in restricted short-term investments		72	235
Purchase of equity investment		0	(203)
Other investing activities		(5)	0
Net cash used in investing activities		(1,541)	(3,032)
Cash flows from financing activities:
Proceeds from issuance of long-term debt		2,149	2,160
Payments on long-term debt and capital leases		(1,942)	(1,813)
Deferred financing costs		(48)	(66)
Other financing activities		15	21
Net cash provided by (used in) financing activities		174	302
Net increase (decrease) in cash and restricted cash		(85)	8
Cash and restricted cash at beginning of period		390	424
Cash and restricted cash at end of period	[2]	305	432
Supplemental information:
Interest paid, net		741	718
Income taxes paid		$ 14	$ 13
[1]	The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets:Cash$303 $340Restricted cash included in restricted cash and short-term investments11 104Total cash and restricted cash$314 $444
[2]	The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets:Cash$294 $328Restricted cash included in restricted cash and short-term investments11 104Total cash and restricted cash$305 $432

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2018		Dec. 31, 2017	Sep. 30, 2017
Cash	$ 303		$ 295	$ 340
Restricted cash included in restricted cash and short-term investments	11			104
Total cash and restricted cash	314	[1]	398	444	[1]
American Airlines, Inc. [Member]
Cash	294		287	328
Restricted cash included in restricted cash and short-term investments	11			104
Total cash and restricted cash	$ 305	[2]	$ 390	$ 432	[2]
[1]	The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets:Cash$303 $340Restricted cash included in restricted cash and short-term investments11 104Total cash and restricted cash$314 $444
[2]	The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets:Cash$294 $328Restricted cash included in restricted cash and short-term investments11 104Total cash and restricted cash$305 $432

Basis of Presentation and Recen

Basis of Presentation and Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basis of Presentation and Recent Accounting Pronouncements	Basis of Presentation and Recent Accounting Pronouncements (a) Basis of Presentation The accompanying unaudited condensed consolidated financial statements of American Airlines Group Inc. (we, us, our and similar terms, or AAG) should be read in conjunction with the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2017 . The accompanying unaudited condensed consolidated financial statements include the accounts of AAG and its wholly-owned subsidiaries. AAG’s principal subsidiary is American Airlines, Inc. (American). All significant intercompany transactions have been eliminated. On December 9, 2013, a subsidiary of AMR Corporation (AMR) merged with and into US Airways Group, Inc. (US Airways Group), a Delaware corporation, which survived as a wholly-owned subsidiary of AAG, and AAG emerged from Chapter 11 (the Merger). Upon closing of the Merger and emergence from Chapter 11, AMR changed its name to American Airlines Group Inc. On December 30, 2015, in order to simplify AAG’s internal corporate structure, US Airways Group merged with and into AAG, with AAG as the surviving corporation. Immediately thereafter, US Airways, Inc. (US Airways), a wholly-owned subsidiary of US Airways Group, merged with and into American, with American as the surviving corporation. Management believes that all adjustments necessary for the fair presentation of results, consisting of normally recurring items, have been included in the unaudited condensed consolidated financial statements for the interim periods presented. The preparation of financial statements in accordance with accounting principles generally accepted in the United States (GAAP) requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The most significant areas of judgment relate to passenger revenue recognition, impairment of goodwill, impairment of long-lived and intangible assets, the loyalty program, valuation allowance for deferred tax assets, as well as pension and retiree medical and other postretirement benefits. (b) Recent Accounting Pronouncements Standards Effective for 2018 Reporting Periods Effective January 1, 2018, we adopted the accounting pronouncements described below. ASU 2014-09: Revenue from Contracts with Customers (Topic 606) (the New Revenue Standard) The New Revenue Standard applies to all companies that enter into contracts with customers to transfer goods or services. We adopted the New Revenue Standard using the full retrospective method, which resulted in the recast of prior reporting periods. The adoption of the New Revenue Standard impacted our accounting for outstanding mileage credits earned through travel by AAdvantage loyalty program members. There was no change in accounting for sales of mileage credits to co-branded card or other partners. Prior to the adoption of the New Revenue Standard, we used the incremental cost method to account for the portion of our loyalty program liability related to mileage credits earned through travel, which were valued based on the estimated incremental cost of carrying one additional passenger. The New Revenue Standard required us to change our policy to the deferred revenue method and apply a relative selling price approach whereby a portion of each passenger ticket sale attributable to mileage credits earned is deferred and recognized in passenger revenue upon future mileage redemption. The value of the earned mileage credits is materially greater under the deferred revenue method than the value attributed to these mileage credits under the incremental cost method. The New Revenue Standard also required certain reclassifications, principally the reclassification of certain ancillary revenues previously classified and reported as other revenue to passenger revenue and as applicable to cargo revenue. Additionally, the New Revenue Standard required a gross presentation on the face of our condensed consolidated statement of operations for certain revenues and expenses that had previously been presented on a net basis. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 and recast consolidated balance sheet data as of December 31, 2017 presented below for the effects of adoption. ASU 2017-07: Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (the New Retirement Standard) The New Retirement Standard required all components of our net periodic benefit cost (income), with the exception of service cost, previously reported within operating expenses as salaries, wages and benefits, to be reclassified and reported within nonoperating income (expense). The New Retirement Standard was applied retrospectively, which resulted in the recast of each prior reporting period presented. The adoption of the New Retirement Standard had no impact on pre-tax income or net income reported. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 presented below for the effects of adoption. ASU 2016-01: Financial Instruments - Overall (Subtopic 825-10) This ASU made several modifications to Subtopic 825-10, including the elimination of the available-for-sale classification of equity investments, and it required equity investments with readily determinable fair values to be measured at fair value with changes in fair value recognized in net income. This standard was adopted prospectively as of January 1, 2018 and resulted in a $77 million cumulative effect adjustment credit to retained earnings related to our investment in China Southern Airlines Company Limited (China Southern Airlines), which was previously accounted for under the cost method. ASU 2016-18: Statement of Cash Flows (Topic 230): Restricted Cash This ASU required that the change in total cash, cash at beginning of period and cash at end of period on the statement of cash flows include restricted cash and also requires companies who report cash and restricted cash separately on the balance sheet to reconcile those amounts to the statement of cash flows. This standard was applied retrospectively, which resulted in the recast of the prior reporting period in the statement of cash flows. For the nine months ended September 30, 2018 and 2017 , $11 million and $104 million , respectively, of restricted cash is included in the total of cash and restricted cash balance at the end of period. A reconciliation of cash and restricted cash from our condensed consolidated statement of cash flows to the amounts reported within our condensed consolidated balance sheet is also included in a table below our condensed consolidated statement of cash flows . Impacts to Prior Period Results The effects of adoption of the New Revenue Standard and New Retirement Standard to our condensed consolidated statement of operations for the three and nine months ended September 30, 2017 were as follows (in millions, except per share amounts): New Revenue Standard New Retirement Standard Three Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 9,377 $ 59 $ 651 $ 9 $ — $ 10,096 Cargo 200 — 10 13 — 223 Other 1,301 — (661 ) 6 — 646 Total operating revenues 10,878 59 — 28 — 10,965 Total operating expenses 9,646 — — 28 35 9,709 Operating income 1,232 59 — — (35 ) 1,256 Total nonoperating expense, net (228 ) — — — 35 (193 ) Income before income taxes 1,004 59 — — — 1,063 Income tax provision 380 22 — — — 402 Net income $ 624 $ 37 $ — $ — $ — $ 661 Diluted earnings per common share $ 1.28 $ 1.36 New Revenue Standard New Retirement Standard Nine Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 27,114 $ 328 $ 1,976 $ 29 $ — $ 29,447 Cargo 568 — 31 34 — 633 Other 3,924 — (2,007 ) 14 — 1,931 Total operating revenues 31,606 328 — 77 — 32,011 Total operating expenses 28,238 — — 77 104 28,419 Operating income 3,368 328 — — (104 ) 3,592 Total nonoperating expense, net (709 ) — — — 104 (605 ) Income before income taxes 2,659 328 — — — 2,987 Income tax provision 998 124 — — — 1,122 Net income $ 1,661 $ 204 $ — $ — $ — $ 1,865 Diluted earnings per common share $ 3.35 $ 3.76 The effects of adoption of the New Revenue Standard to our December 31, 2017 consolidated balance sheet are as follows (in millions): As Reported New Revenue Standard As Recast Deferred tax asset $ 427 $ 1,389 $ 1,816 Air traffic liability 3,978 64 4,042 Current loyalty program liability 2,791 330 3,121 Noncurrent loyalty program liability — 5,701 5,701 Total stockholders' equity (deficit) 3,926 (4,706 ) (780 ) Standards Effective for 2019 Reporting Periods ASU 2016-02: Leases (Topic 842) (the New Lease Standard) The New Lease Standard requires lessees to recognize a lease liability and a right-of-use asset on the balance sheet and aligns many of the underlying principles of the new lessor model with those in the New Revenue Standard. The New Lease Standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. In July 2018, the FASB issued ASU 2018-11, "Leases (Topic 842) - Targeted Improvements," which provides entities an optional transition method to apply the New Lease Standard prospectively at the date of adoption instead of recasting prior reporting periods. If this optional transition method is elected, an entity would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. We will adopt the New Lease Standard effective January 1, 2019. We are currently evaluating how the adoption of the New Lease Standard will impact our consolidated financial statements. Interpretations are on-going and could have a material impact on our implementation of the New Lease Standard. Currently, we expect that the adoption of the New Lease Standard will have a material impact on our consolidated balance sheet due to the recognition of right-of-use assets and lease liabilities principally for certain leases currently accounted for as operating leases. ASU 2018-02: Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income This ASU provides financial statement preparers with an option to reclassify stranded tax effects within accumulated other comprehensive income to retained earnings due to the U.S. federal corporate income tax rate change as a result of H.R. 1, the 2017 Tax Cuts and Jobs Act (the 2017 Tax Act). The amount of the reclassification is the difference between the amount initially charged or credited directly to other comprehensive income at the previously enacted U.S. federal corporate income tax rate that remains in accumulated other comprehensive income and the amount that would have been charged or credited directly to other comprehensive income using the newly enacted U.S. federal corporate income tax rate, excluding the effect of any valuation allowance previously charged to income from continuing operations. This standard is effective for interim and annual reporting periods beginning after December 15, 2018, and early adoption is permitted. We expect we will adopt this standard effective January 1, 2019. The adoption of the standard may impact tax amounts stranded in accumulated other comprehensive income related to our pension and retiree medical and other postretirement benefit plans.
American Airlines, Inc. [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basis of Presentation and Recent Accounting Pronouncements	Basis of Presentation and Recent Accounting Pronouncements (a) Basis of Presentation The accompanying unaudited condensed consolidated financial statements of American Airlines, Inc. (American) should be read in conjunction with the consolidated financial statements contained in American’s Annual Report on Form 10-K for the year ended December 31, 2017 . American is the principal wholly-owned subsidiary of American Airlines Group Inc. (AAG). All significant intercompany transactions have been eliminated. On December 9, 2013, a subsidiary of AMR Corporation (AMR) merged with and into US Airways Group, Inc. (US Airways Group), a Delaware corporation, which survived as a wholly-owned subsidiary of AAG, and AAG emerged from Chapter 11 (the Merger). Upon closing of the Merger and emergence from Chapter 11, AMR changed its name to American Airlines Group Inc. On December 30, 2015, in order to simplify AAG’s internal corporate structure, US Airways Group merged with and into AAG, with AAG as the surviving corporation. Immediately thereafter, US Airways, Inc. (US Airways), a wholly-owned subsidiary of US Airways Group, merged with and into American, with American as the surviving corporation. Management believes that all adjustments necessary for the fair presentation of results, consisting of normally recurring items, have been included in the unaudited condensed consolidated financial statements for the interim periods presented. The preparation of financial statements in accordance with accounting principles generally accepted in the United States (GAAP) requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The most significant areas of judgment relate to passenger revenue recognition, impairment of goodwill, impairment of long-lived and intangible assets, the loyalty program, valuation allowance for deferred tax assets, as well as pension and retiree medical and other postretirement benefits. (b) Recent Accounting Pronouncements Standards Effective for 2018 Reporting Periods Effective January 1, 2018, American adopted the accounting pronouncements described below. ASU 2014-09: Revenue from Contracts with Customers (Topic 606) (the New Revenue Standard) The New Revenue Standard applies to all companies that enter into contracts with customers to transfer goods or services. American adopted the New Revenue Standard using the full retrospective method, which resulted in the recast of prior reporting periods. The adoption of the New Revenue Standard impacted American’s accounting for outstanding mileage credits earned through travel by AAdvantage loyalty program members. There was no change in accounting for sales of mileage credits to co-branded card or other partners. Prior to the adoption of the New Revenue Standard, American used the incremental cost method to account for the portion of its loyalty program liability related to mileage credits earned through travel, which were valued based on the estimated incremental cost of carrying one additional passenger. The New Revenue Standard required American to change its policy to the deferred revenue method and apply a relative selling price approach whereby a portion of each passenger ticket sale attributable to mileage credits earned is deferred and recognized in passenger revenue upon future mileage redemption. The value of the earned mileage credits is materially greater under the deferred revenue method than the value attributed to these mileage credits under the incremental cost method. The New Revenue Standard also required certain reclassifications, principally the reclassification of certain ancillary revenues previously classified and reported as other revenue to passenger revenue and as applicable to cargo revenue. Additionally, the New Revenue Standard required a gross presentation on the face of American’s condensed consolidated statement of operations for certain revenues and expenses that had previously been presented on a net basis. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 and recast consolidated balance sheet data as of December 31, 2017 presented below for the effects of adoption. ASU 2017-07: Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (the New Retirement Standard) The New Retirement Standard required all components of American’s net periodic benefit cost (income), with the exception of service cost, previously reported within operating expenses as salaries, wages and benefits, to be reclassified and reported within nonoperating income (expense). The New Retirement Standard was applied retrospectively, which resulted in the recast of each prior reporting period presented. The adoption of the New Retirement Standard had no impact on pre-tax income or net income reported. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 presented below for the effects of adoption. ASU 2016-01: Financial Instruments - Overall (Subtopic 825-10) This ASU made several modifications to Subtopic 825-10, including the elimination of the available-for-sale classification of equity investments, and it required equity investments with readily determinable fair values to be measured at fair value with changes in fair value recognized in net income. This standard was adopted prospectively as of January 1, 2018 and resulted in a $77 million cumulative effect adjustment credit to retained earnings related to American's investment in China Southern Airlines Company Limited (China Southern Airlines), which was previously accounted for under the cost method. ASU 2016-18: Statement of Cash Flows (Topic 230): Restricted Cash This ASU required that the change in total cash, cash at beginning of period and cash at end of period on the statement of cash flows include restricted cash and also requires companies who report cash and restricted cash separately on the balance sheet to reconcile those amounts to the statement of cash flows. This standard was applied retrospectively, which resulted in the recast of the prior reporting period in the statement of cash flows. For the nine months ended September 30, 2018 and 2017 , $11 million and $104 million , respectively, of restricted cash is included in the total of cash and restricted cash balance at the end of period. A reconciliation of cash and restricted cash from American's condensed consolidated statement of cash flows to the amounts reported within its condensed consolidated balance sheet is also included in a table below its condensed consolidated statement of cash flows . Impacts to Prior Period Results The effects of adoption of the New Revenue Standard and New Retirement Standard to American’s condensed consolidated statement of operations for the three and nine months ended September 30, 2017 were as follows (in millions): New Revenue Standard New Retirement Standard Three Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 9,377 $ 59 $ 651 $ 9 $ — $ 10,096 Cargo 200 — 10 13 — 223 Other 1,298 — (661 ) 6 — 643 Total operating revenues 10,875 59 — 28 — 10,962 Total operating expenses 9,650 — — 28 35 9,713 Operating income 1,225 59 — — (35 ) 1,249 Total nonoperating expense, net (181 ) — — — 35 (146 ) Income before income taxes 1,044 59 — — — 1,103 Income tax provision 395 22 — — — 417 Net income $ 649 $ 37 $ — $ — $ — $ 686 New Revenue Standard New Retirement Standard Nine Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 27,114 $ 328 $ 1,976 $ 29 $ — $ 29,447 Cargo 568 — 31 34 — 633 Other 3,916 — (2,007 ) 14 — 1,923 Total operating revenues 31,598 328 — 77 — 32,003 Total operating expenses 28,242 — — 77 104 28,423 Operating income 3,356 328 — — (104 ) 3,580 Total nonoperating expense, net (572 ) — — — 104 (468 ) Income before income taxes 2,784 328 — — — 3,112 Income tax provision 1,046 124 — — — 1,170 Net income $ 1,738 $ 204 $ — $ — $ — $ 1,942 The effects of adoption of the New Revenue Standard to American’s December 31, 2017 consolidated balance sheet are as follows (in millions): As Reported New Revenue Standard As Recast Deferred tax asset $ 682 $ 1,389 $ 2,071 Air traffic liability 3,978 64 4,042 Current loyalty program liability 2,791 330 3,121 Noncurrent loyalty program liability — 5,701 5,701 Total stockholder’s equity (deficit) 14,594 (4,706 ) 9,888 Standards Effective for 2019 Reporting Periods ASU 2016-02: Leases (Topic 842) (the New Lease Standard) The New Lease Standard requires lessees to recognize a lease liability and a right-of-use asset on the balance sheet and aligns many of the underlying principles of the new lessor model with those in the New Revenue Standard. The New Lease Standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. In July 2018, the FASB issued ASU 2018-11, "Leases (Topic 842) - Targeted Improvements," which provides entities an optional transition method to apply the New Lease Standard prospectively at the date of adoption instead of recasting prior reporting periods. If this optional transition method is elected, an entity would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. American will adopt the New Lease Standard effective January 1, 2019. American is currently evaluating how the adoption of the New Lease Standard will impact its consolidated financial statements. Interpretations are on-going and could have a material impact on American's implementation of the New Lease Standard. Currently, American expects that the adoption of the New Lease Standard will have a material impact on its consolidated balance sheet due to the recognition of right-of-use assets and lease liabilities principally for certain leases currently accounted for as operating leases. ASU 2018-02: Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income This ASU provides financial statement preparers with an option to reclassify stranded tax effects within accumulated other comprehensive income to retained earnings due to the U.S. federal corporate income tax rate change as a result of H.R. 1, the 2017 Tax Cuts and Jobs Act (the 2017 Tax Act). The amount of the reclassification is the difference between the amount initially charged or credited directly to other comprehensive income at the previously enacted U.S. federal corporate income tax rate that remains in accumulated other comprehensive income and the amount that would have been charged or credited directly to other comprehensive income using the newly enacted U.S. federal corporate income tax rate, excluding the effect of any valuation allowance previously charged to income from continuing operations. This standard is effective for interim and annual reporting periods beginning after December 15, 2018, and early adoption is permitted. American expects it will adopt this standard effective January 1, 2019. The adoption of the standard may impact tax amounts stranded in accumulated other comprehensive income related to American's pension and retiree medical and other postretirement benefit plans.

Special Items, Net

Special Items, Net	9 Months Ended
	Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]
Special Items, Net	Special Items, Net Special items, net in the condensed consolidated statements of operations consisted of the following expenses (income) (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Fleet restructuring expenses (1) $ 109 $ 62 $ 275 $ 174 Merger integration expenses (2) 68 62 188 192 Severance expenses (3) 20 — 20 — Mark-to-market adjustments on bankruptcy obligations, net (4) 17 (12 ) (39 ) 7 Litigation settlement — — 45 — Intangible asset impairment (5) — — 26 — Labor contract expenses — — 13 45 Other operating charges, net 1 — 35 14 Mainline operating special items, net 215 112 563 432 Regional operating special items, net 2 (5 ) 1 (1 ) Mark-to-market adjustments on equity investments, net (6) 15 — 82 — Debt refinancing and extinguishment charges — 3 13 12 Nonoperating special items, net 15 3 95 12 Income tax special items, net (7) — — 40 — (1) Fleet restructuring expenses principally included accelerated depreciation and remaining lease payments for aircraft and related equipment grounded or expected to be grounded earlier than planned. (2) Merger integration expenses included costs associated with our integration projects, principally our flight attendant, human resources and payroll, and technical operations integrations. (3) Severance expenses primarily included costs associated with reductions in headcount of management and support staff team members. (4) Bankruptcy obligations will ultimately be settled in shares of our common stock. Accordingly, fluctuations in our stock price result in mark-to-market adjustments to these obligations. (5) Intangible asset impairment includes a non-cash charge to write-off our Brazil route authority as a result of ratification of the U.S.-Brazil open skies agreement. (6) Mark-to-market adjustments on equity investments relate to net unrealized losses resulting from the change in market value primarily associated with our equity investments in China Southern Airlines and Mesa Air Group, Inc. (7) Income tax special items for the nine months ended September 30, 2018 included a $22 million charge to income tax expense to establish a required valuation allowance related to our estimated refund for Alternative Minimum Tax (AMT) credits and an $18 million charge related to an international income tax matter.
American Airlines, Inc. [Member]
Restructuring Cost and Reserve [Line Items]
Special Items, Net	Special Items, Net Special items, net in the condensed consolidated statements of operations consisted of the following expenses (income) (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Fleet restructuring expenses (1) $ 109 $ 62 $ 275 $ 174 Merger integration expenses (2) 68 62 188 192 Severance expenses (3) 20 — 20 — Mark-to-market adjustments on bankruptcy obligations, net (4) 17 (12 ) (39 ) 7 Litigation settlement — — 45 — Intangible asset impairment (5) — — 26 — Labor contract expenses — — 13 45 Other operating charges, net 1 — 35 14 Mainline operating special items, net 215 112 563 432 Regional operating special items, net — (1 ) — 3 Mark-to-market adjustments on equity investments, net (6) 15 — 82 — Debt refinancing and extinguishment charges — 3 13 12 Nonoperating special items, net 15 3 95 12 Income tax special items, net (7) — — 48 — (1) Fleet restructuring expenses principally included accelerated depreciation and remaining lease payments for aircraft and related equipment grounded or expected to be grounded earlier than planned. (2) Merger integration expenses included costs associated with American's integration projects, principally its flight attendant, human resources and payroll, and technical operations integrations. (3) Severance expenses primarily included costs associated with reductions in headcount of management and support staff team members. (4) Bankruptcy obligations will ultimately be settled in shares of AAG common stock. Accordingly, fluctuations in AAG's stock price result in mark-to-market adjustments to these obligations. (5) Intangible asset impairment includes a non-cash charge to write-off American's Brazil route authority as a result of ratification of the U.S.-Brazil open skies agreement. (6) Mark-to-market adjustments on equity investments relate to net unrealized losses resulting from the change in market value primarily associated with our equity investments in China Southern Airlines and Mesa Air Group, Inc. (7) Income tax special items for the nine months ended September 30, 2018 included a $30 million charge to income tax expense to establish a required valuation allowance related to American's estimated refund for Alternative Minimum Tax (AMT) credits and an $18 million charge related to an international income tax matter.

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share The following table sets forth the computation of basic and diluted earnings per common share (EPS) (in millions, except share and per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Basic EPS: Net income $ 341 $ 661 $ 1,094 $ 1,865 Weighted average common shares outstanding (in thousands) 460,526 484,772 465,452 493,164 Basic EPS $ 0.74 $ 1.36 $ 2.35 $ 3.78 Diluted EPS: Net income for purposes of computing diluted EPS $ 341 $ 661 $ 1,094 $ 1,865 Share computation for diluted EPS (in thousands): Basic weighted average common shares outstanding 460,526 484,772 465,452 493,164 Dilutive effect of stock awards 981 1,853 1,456 2,632 Diluted weighted average common shares outstanding 461,507 486,625 466,908 495,796 Diluted EPS $ 0.74 $ 1.36 $ 2.34 $ 3.76 Restricted stock unit awards excluded from the calculation of diluted EPS because inclusion would be antidilutive (in thousands) 1,694 66 1,128 432

Share Repurchase Programs and D

Share Repurchase Programs and Dividends	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Share Repurchase Programs and Dividends	Share Repurchase Programs and Dividends In April 2018, we announced that our Board of Directors authorized a new $2.0 billion share repurchase program that expires on December 31, 2020. Since July 2014, our Board of Directors has approved seven share repurchase programs aggregating $13.0 billion of authority. As of September 30, 2018 , there was $1.7 billion remaining authority to repurchase shares under our new $2.0 billion share repurchase program. Share repurchases under our repurchase programs may be made through a variety of methods, which may include open market purchases, privately negotiated transactions, block trades or accelerated share repurchase transactions. Any such repurchases will be made from time to time subject to market and economic conditions, applicable legal requirements and other relevant factors. We are not obligated to repurchase any specific number of shares and our repurchase of common stock may be limited, suspended or discontinued at any time at our discretion. During the nine months ended September 30, 2018 , we repurchased 16.6 million shares of AAG common stock for $800 million at a weighted average cost per share of $48.15 . Since the inception of our share repurchase programs in July 2014, we have repurchased 278.9 million shares of AAG common stock for $11.3 billion at a weighted average cost per share of $40.69 . Our Board of Directors declared a cash dividend of $0.10 per share for stockholders of record as of August 7, 2018 and paid on August 21, 2018 , totaling $ 46 million . For the first nine months of 2018 , we paid total quarterly cash dividends of $140 million .

Revenue Recognition

Revenue Recognition	9 Months Ended
	Sep. 30, 2018
Entity Information [Line Items]
Revenue Recognition	Revenue Recognition (a) Revenue Effective January 1, 2018, we adopted the New Revenue Standard using the full retrospective method, which resulted in the recast of prior reporting periods. See Recent Accounting Pronouncements in Note 1(b) above for effects of adoption on our condensed consolidated statement of operations for the three and nine months ended September 30, 2017 and on our consolidated balance sheet as of December 31, 2017 . Under the New Revenue Standard, revenue is recognized upon transfer of control of promised products or services to our customers in an amount that reflects the consideration we expect to receive in exchange for those products or services . The following are the significant categories comprising our reported operating revenues (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Passenger revenue: Passenger travel $ 9,790 $ 9,400 $ 28,278 $ 27,179 Loyalty revenue - travel (1) 771 696 2,436 2,268 Total passenger revenue 10,561 10,096 30,714 29,447 Cargo 260 223 748 633 Other: Loyalty revenue - marketing services 613 527 1,765 1,574 Other revenue 125 119 376 357 Total other revenue 738 646 2,141 1,931 Total operating revenues $ 11,559 $ 10,965 $ 33,603 $ 32,011 (1) Loyalty revenue included in passenger revenue is principally comprised of mileage credit redemptions for air travel awards from mileage credits earned through travel and mileage credits sold to co-branded card and other partners. See discussion of Loyalty Revenue below. The following is our total passenger revenue by geographic region (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Domestic $ 7,424 $ 7,162 $ 22,071 $ 21,522 Latin America 1,210 1,183 3,939 3,622 Atlantic 1,504 1,363 3,471 3,170 Pacific 423 388 1,233 1,133 Total passenger revenue $ 10,561 $ 10,096 $ 30,714 $ 29,447 We attribute passenger revenue by geographic region based upon the origin and destination of each flight segment. Passenger Revenue We recognize all revenues generated from transportation on American and our regional flights operated under the brand name American Eagle, including associated baggage fees, ticketing change fees and other inflight services, as passenger revenue when transportation is provided. Ticket and other related sales for transportation that has not yet been provided are initially deferred and recorded as air traffic liability on the condensed consolidated balance sheets. The air traffic liability principally represents tickets sold for future travel dates and estimated future refunds and exchanges of tickets sold for past travel dates. The majority of tickets sold are nonrefundable. A small percentage of tickets, some of which are partially used tickets, expire unused. Due to complex pricing structures, refund and exchange policies, and interline agreements with other airlines, certain amounts are recognized in passenger revenue using estimates regarding both the timing of the revenue recognition and the amount of revenue to be recognized. These estimates are generally based on the analysis of our historical data. We have consistently applied this accounting method to estimate revenue from forfeited tickets at the date of travel. Estimated future refunds and exchanges included in the air traffic liability are routinely evaluated based on subsequent activity to validate the accuracy of our estimates. Any adjustments resulting from periodic evaluations of the estimated air traffic liability are included in passenger revenue during the period in which the evaluations are completed. Various taxes and fees assessed on the sale of tickets to end customers are collected by us as an agent and remitted to taxing authorities. These taxes and fees have been presented on a net basis in the accompanying condensed consolidated statements of operations and recorded as a liability until remitted to the appropriate taxing authority. Loyalty Revenue We currently operate the loyalty program, AAdvantage. This program awards mileage credits to passengers who fly on American, any one world airline or other partner airlines, or by using the services of other program participants, such as the Citi and Barclays US co-branded cards, hotels and car rental companies. Mileage credits can be redeemed for travel on American and other participating partner airlines as well as other non-air travel awards such as hotels and rental cars. For mileage credits earned by AAdvantage loyalty program members, we apply the deferred revenue method in accordance with the New Revenue Standard. Mileage credits earned through travel For mileage credits earned through travel, we apply a relative selling price approach whereby the total amount collected from each passenger ticket sale is allocated between the air transportation and the mileage credits earned. The portion of each passenger ticket sale attributable to mileage credits earned is initially deferred and then recognized in passenger revenue when mileage credits are redeemed and transportation is provided. The estimated selling price of mileage credits is determined using an equivalent ticket value approach which uses historical data, including award redemption patterns by geographic region and class of service as well as similar fares as those used to settle award redemptions. The estimated selling price of miles is adjusted for an estimate of miles that will not be redeemed based on historical redemption patterns. Mileage credits sold to co-branded cards and other partners We sell mileage credits to participating airline partners and non-airline business partners including our co-branded card partners, under contracts with terms extending generally for one to nine years . Consideration received from the sale of mileage credits is variable and payment terms typically are within 30 days subsequent to the month of mileage sale. Sales of mileage credits to non-airline business partners are comprised of two components, transportation and marketing. We allocate the consideration received from these sales of mileage credits based on the relative selling price of each product or service delivered. Our most significant partner agreements are our co-branded card program agreements with Citi and Barclays US that we entered into in 2016. We identified the following revenue elements in these co-branded card agreements: the transportation component; and the use of intellectual property including the American brand and access to loyalty program member lists, which is the predominant element in the agreements, as well as advertising (collectively, the marketing component). Accordingly, we recognize the marketing component in other revenue in the period of the mileage sale following the sales-based royalty method. The transportation component represents the estimated selling price of future travel awards and is determined using the same equivalent ticket value approach described above. The portion of each mileage credit sold attributable to transportation is initially deferred and then recognized in passenger revenue when mileage credits are redeemed and transportation is provided. For the portion of our outstanding mileage credits that we estimate will not be redeemed, we recognize the associated value proportionally as the remaining mileage credits are redeemed. Our estimates are based on analysis of historical redemptions. Cargo Revenue Cargo revenue is recognized when we provide the transportation. Other Revenue Other revenue includes revenue associated with our loyalty program, which is comprised principally of the marketing component of mileage sales to co-branded card and other partners and other marketing related payments. For the three and nine months ended September 30, 2018 , loyalty revenue included in other revenue was $613 million and $1.8 billion , respectively. For the three and nine months ended September 30, 2017 , loyalty revenue included in other revenue was $527 million and $1.6 billion , respectively. The accounting and recognition for the loyalty program marketing services are discussed above in Loyalty Revenue. The remaining amounts included within other revenue relate to airport clubs, advertising and vacation-related services. (b) Contract Balances Our significant contract liabilities are comprised of (1) outstanding loyalty program mileage credits that may be redeemed for future travel and other non-air travel awards, reported as loyalty program liability on our condensed consolidated balance sheet and (2) ticket sales for transportation that has not yet been provided, reported as air traffic liability on our condensed consolidated balance sheet. September 30, 2018 December 31, 2017 (In millions) Loyalty program liability $ 8,559 $ 8,822 Air traffic liability 5,040 4,042 Total $ 13,599 $ 12,864 The balance of the loyalty program liability fluctuates based on seasonal patterns, which impact the volume of mileage credits issued through travel or sold to co-branded card and other partners (deferral of revenue) and mileage credits redeemed (recognition of revenue). Changes in loyalty program liability are as follows (in millions): Balance at December 31, 2017 $ 8,822 Deferral of revenue 2,302 Recognition of revenue (1) (2,565 ) Balance at September 30, 2018 (2) $ 8,559 (1) Principally relates to revenue recognized from the redemption of mileage credits for both air and non-air travel awards. Mileage credits are combined in one homogenous pool and are not separately identifiable. As such, the revenue is comprised of miles that were part of the loyalty program deferred revenue balance at the beginning of the period as well as miles that were issued during the period. (2) Mileage credits can be redeemed at any time and do not expire as long as that AAdvantage member has any type of qualifying activity at least every 18 months. As of September 30, 2018 , our current loyalty program liability was $3.2 billion and represents our current estimate of revenue expected to be recognized in the next twelve months based on historical trends, with the balance reflected in long-term loyalty program liability expected to be recognized as revenue in periods thereafter. The air traffic liability principally represents tickets sold for future travel dates and estimated future refunds and exchanges of tickets sold for past travel dates. The balance in our air traffic liability also fluctuates with seasonal travel patterns. The contract duration of passenger tickets is one year . Accordingly, any revenue associated with tickets sold for future travel dates will be recognized within twelve months. For the nine months ended September 30, 2018 , $3.1 billion of revenue was recognized in passenger revenue that was included in our air traffic liability at December 31, 2017 . With respect to contract receivables, reflected as accounts receivable, net on the accompanying condensed consolidated balance sheet, these primarily include receivables for tickets sold to individual passengers through the use of major credit cards. These receivables are short-term, mostly settled within seven days after sale. Bad debt losses, which have been minimal in the past, have been considered in establishing allowances for doubtful accounts.
American Airlines, Inc. [Member]
Entity Information [Line Items]
Revenue Recognition	Revenue Recognition (a) Revenue Effective January 1, 2018, American adopted the New Revenue Standard using the full retrospective method, which resulted in the recast of prior reporting periods. See Recent Accounting Pronouncements in Note 1(b) above for effects of adoption on American's condensed consolidated statement of operations for the three and nine months ended September 30, 2017 and on American's consolidated balance sheet as of December 31, 2017 . Under the New Revenue Standard, revenue is recognized upon transfer of control of promised products or services to American's customers in an amount that reflects the consideration it expects to receive in exchange for those products or services . The following are the significant categories comprising American's reported operating revenues (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Passenger revenue: Passenger travel $ 9,790 $ 9,400 $ 28,278 $ 27,179 Loyalty revenue - travel (1) 771 696 2,436 2,268 Total passenger revenue 10,561 10,096 30,714 29,447 Cargo 260 223 748 633 Other: Loyalty revenue - marketing services 613 527 1,765 1,574 Other revenue 122 116 367 349 Total other revenue 735 643 2,132 1,923 Total operating revenues $ 11,556 $ 10,962 $ 33,594 $ 32,003 (1) Loyalty revenue included in passenger revenue is principally comprised of mileage credit redemptions for air travel awards from mileage credits earned through travel and mileage credits sold to co-branded card and other partners. See discussion of Loyalty Revenue below. The following is American's total passenger revenue by geographic region (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Domestic $ 7,424 $ 7,162 $ 22,071 $ 21,522 Latin America 1,210 1,183 3,939 3,622 Atlantic 1,504 1,363 3,471 3,170 Pacific 423 388 1,233 1,133 Total passenger revenue $ 10,561 $ 10,096 $ 30,714 $ 29,447 American attributes passenger revenue by geographic region based upon the origin and destination of each flight segment. Passenger Revenue American recognizes all revenues generated from transportation on American and its regional flights operated under the brand name American Eagle, including associated baggage fees, ticketing change fees and other inflight services, as passenger revenue when transportation is provided. Ticket and other related sales for transportation that has not yet been provided are initially deferred and recorded as air traffic liability on the condensed consolidated balance sheets. The air traffic liability principally represents tickets sold for future travel dates and estimated future refunds and exchanges of tickets sold for past travel dates. The majority of tickets sold are nonrefundable. A small percentage of tickets, some of which are partially used tickets, expire unused. Due to complex pricing structures, refund and exchange policies, and interline agreements with other airlines, certain amounts are recognized in passenger revenue using estimates regarding both the timing of the revenue recognition and the amount of revenue to be recognized. These estimates are generally based on the analysis of American's historical data. American has consistently applied this accounting method to estimate revenue from forfeited tickets at the date of travel. Estimated future refunds and exchanges included in the air traffic liability are routinely evaluated based on subsequent activity to validate the accuracy of American's estimates. Any adjustments resulting from periodic evaluations of the estimated air traffic liability are included in passenger revenue during the period in which the evaluations are completed. Various taxes and fees assessed on the sale of tickets to end customers are collected by American as an agent and remitted to taxing authorities. These taxes and fees have been presented on a net basis in the accompanying condensed consolidated statements of operations and recorded as a liability until remitted to the appropriate taxing authority. Loyalty Revenue American currently operates the loyalty program, AAdvantage. This program awards mileage credits to passengers who fly on American, any one world airline or other partner airlines, or by using the services of other program participants, such as the Citi and Barclays US co-branded cards, hotels and car rental companies. Mileage credits can be redeemed for travel on American and other participating partner airlines as well as other non-air travel awards such as hotels and rental cars. For mileage credits earned by AAdvantage loyalty program members, American applies the deferred revenue method in accordance with the New Revenue Standard. Mileage credits earned through travel For mileage credits earned through travel, American applies a relative selling price approach whereby the total amount collected from each passenger ticket sale is allocated between the air transportation and the mileage credits earned. The portion of each passenger ticket sale attributable to mileage credits earned is initially deferred and then recognized in passenger revenue when mileage credits are redeemed and transportation is provided. The estimated selling price of mileage credits is determined using an equivalent ticket value approach which uses historical data, including award redemption patterns by geographic region and class of service as well as similar fares as those used to settle award redemptions. The estimated selling price of miles is adjusted for an estimate of miles that will not be redeemed based on historical redemption patterns. Mileage credits sold to co-branded cards and other partners American sells mileage credits to participating airline partners and non-airline business partners including American's co-branded card partners, under contracts with terms extending generally for one to nine years . Consideration received from the sale of mileage credits is variable and payment terms typically are within 30 days subsequent to the month of mileage sale. Sales of mileage credits to non-airline business partners are comprised of two components, transportation and marketing. American allocates the consideration received from these sales of mileage credits based on the relative selling price of each product or service delivered. American's most significant partner agreements are its co-branded card program agreements with Citi and Barclays US that American entered into in 2016. American identified the following revenue elements in these co-branded card agreements: the transportation component; and the use of intellectual property including the American brand and access to loyalty program member lists, which is the predominant element in the agreements, as well as advertising (collectively, the marketing component). Accordingly, American recognizes the marketing component in other revenue in the period of the mileage sale following the sales-based royalty method. The transportation component represents the estimated selling price of future travel awards and is determined using the same equivalent ticket value approach described above. The portion of each mileage credit sold attributable to transportation is initially deferred and then recognized in passenger revenue when mileage credits are redeemed and transportation is provided. For the portion of American's outstanding mileage credits that it estimates will not be redeemed, American recognizes the associated value proportionally as the remaining mileage credits are redeemed. American's estimates are based on analysis of historical redemptions. Cargo Revenue Cargo revenue is recognized when American provides the transportation. Other Revenue Other revenue includes revenue associated with American's loyalty program, which is comprised principally of the marketing component of mileage sales to co-branded card and other partners and other marketing related payments. For the three and nine months ended September 30, 2018 , loyalty revenue included in other revenue was $613 million and $1.8 billion , respectively. For the three and nine months ended September 30, 2017 , loyalty revenue included in other revenue was $527 million and $1.6 billion , respectively. The accounting and recognition for the loyalty program marketing services are discussed above in Loyalty Revenue. The remaining amounts included within other revenue relate to airport clubs, advertising and vacation-related services. (b) Contract Balances American's significant contract liabilities are comprised of (1) outstanding loyalty program mileage credits that may be redeemed for future travel and other non-air travel awards, reported as loyalty program liability on American's condensed consolidated balance sheet and (2) ticket sales for transportation that has not yet been provided, reported as air traffic liability on American's condensed consolidated balance sheet. September 30, 2018 December 31, 2017 (In millions) Loyalty program liability $ 8,559 $ 8,822 Air traffic liability 5,040 4,042 Total $ 13,599 $ 12,864 The balance of the loyalty program liability fluctuates based on seasonal patterns, which impact the volume of mileage credits issued through travel or sold to co-branded card and other partners (deferral of revenue) and mileage credits redeemed (recognition of revenue). Changes in loyalty program liability are as follows (in millions): Balance at December 31, 2017 $ 8,822 Deferral of revenue 2,302 Recognition of revenue (1) (2,565 ) Balance at September 30, 2018 (2) $ 8,559 (1) Principally relates to revenue recognized from the redemption of mileage credits for both air and non-air travel awards. Mileage credits are combined in one homogenous pool and are not separately identifiable. As such, the revenue is comprised of miles that were part of the loyalty program deferred revenue balance at the beginning of the period as well as miles that were issued during the period. (2) Mileage credits can be redeemed at any time and do not expire as long as that AAdvantage member has any type of qualifying activity at least every 18 months. As of September 30, 2018 , American's current loyalty program liability was $3.2 billion and represents American's current estimate of revenue expected to be recognized in the next twelve months based on historical trends, with the balance reflected in long-term loyalty program liability expected to be recognized as revenue in periods thereafter. The air traffic liability principally represents tickets sold for future travel dates and estimated future refunds and exchanges of tickets sold for past travel dates. The balance in American's air traffic liability also fluctuates with seasonal travel patterns. The contract duration of passenger tickets is one year . Accordingly, any revenue associated with tickets sold for future travel dates will be recognized within twelve months. For the nine months ended September 30, 2018 , $3.1 billion of revenue was recognized in passenger revenue that was included in American's air traffic liability at December 31, 2017 . With respect to contract receivables, reflected as accounts receivable, net on the accompanying condensed consolidated balance sheet, these primarily include receivables for tickets sold to individual passengers through the use of major credit cards. These receivables are short-term, mostly settled within seven days after sale. Bad debt losses, which have been minimal in the past, have been considered in establishing allowances for doubtful accounts.

Debt

Debt	9 Months Ended
	Sep. 30, 2018
Debt Instrument [Line Items]
Debt	Debt Long-term debt and capital lease obligations included in the condensed consolidated balance sheets consisted of (in millions): September 30, 2018 December 31, 2017 Secured 2013 Credit Facilities, variable interest rate of 3.98%, installments through 2025 $ 1,825 $ 1,825 2014 Credit Facilities, variable interest rate of 4.13%, installments through 2021 1,228 728 April 2016 Credit Facilities, variable interest rate of 4.24%, installments through 2023 980 990 December 2016 Credit Facilities, variable interest rate of 4.16%, installments through 2023 1,238 1,238 Aircraft enhanced equipment trust certificates (EETCs), fixed interest rates ranging from 3.00% to 9.75%, averaging 4.24%, maturing from 2018 to 2029 11,884 11,881 Equipment loans and other notes payable, fixed and variable interest rates ranging from 2.18% to 8.48%, averaging 4.00%, maturing from 2018 to 2029 5,078 5,259 Special facility revenue bonds, fixed interest rates ranging from 5.00% to 8.00%, maturing from 2019 to 2035 815 857 Other secured obligations, fixed interest rates ranging from 3.81% to 12.24%, maturing from 2021 to 2028 711 773 23,759 23,551 Unsecured 5.50% senior notes, interest only payments until due in 2019 750 750 4.625% senior notes, interest only payments until due in 2020 500 500 6.125% senior notes, interest only payments until due in 2018 — 500 1,250 1,750 Total long-term debt and capital lease obligations 25,009 25,301 Less: Total unamortized debt discount, premium and issuance costs 242 236 Less: Current maturities 2,493 2,554 Long-term debt and capital lease obligations, net of current maturities $ 22,274 $ 22,511 The table below shows the maximum availability under revolving credit facilities, all of which were undrawn, as of September 30, 2018 (in millions): 2013 Revolving Facility $ 1,200 2014 Revolving Facility 1,000 April 2016 Revolving Facility 300 Total $ 2,500 The December 2016 Credit Facilities provide for a revolving credit facility that may be established in the future. 2018 Aircraft Financing Activities 2017-2 EETCs In August and October 2017, American created three pass-through trusts which issued approximately $1.0 billion aggregate face amount of Series 2017-2 Class AA, Class A and Class B EETCs (the 2017-2 EETCs). Of the approximately $1.0 billion 2017-2 EETCs, approximately $735 million of such proceeds were used in 2017 to purchase equipment notes issued by American in connection with the financing of 24 aircraft. The remaining approximately $283 million was used in the first six months of 2018 to purchase equipment notes issued by American in connection with financing the remaining 6 of 30 aircraft financed under the 2017-2 EETCs. Interest and principal payments on equipment notes issued in connection with the 2017-2 EETCs are payable semi-annually in April and October of each year, which interest payments began in April 2018 and principal payments will begin in October 2018. These equipment notes are secured by liens on the aircraft financed with the proceeds of the 2017-2 EETCs. Certain information regarding the 2017-2 EETC equipment notes as of September 30, 2018 is set forth in the table below. 2017-2 EETCs Series AA Series A Series B Aggregate principal issued $545 million $252 million $221 million Fixed interest rate per annum 3.35% 3.60% 3.70% Maturity date October 2029 October 2029 October 2025 2012-2C(R) EETCs On May 15, 2018, American created a pass-through trust which issued $100 million aggregate face amount of the Series 2012-2 Class C(R) EETCs (the 2012-2C(R) EETCs). Interest and principal payments on equipment notes issued in connection with the 2012-2C(R) EETCs are payable semiannually in June and December of each year, beginning in December 2018. American had previously issued $100 million aggregate face amount of Series 2012-2 Class C Certificates on June 6, 2013 (the 2012-2C Certificates) in connection with the financing of 11 aircraft previously delivered to American between May 2013 and October 2013. On June 1, 2018, American redeemed the Series C Equipment Notes relating to such 2012-2C Certificates (the 2012-2C Equipment Notes), which were scheduled to mature on June 3, 2018. The proceeds received from the 2012-2C(R) EETCs were used for the redemption of the 2012-2 Series C Equipment Notes and the repayment of the 2012-2C Certificates. Certain information regarding the 2012-2 Class C(R) EETC equipment notes as of September 30, 2018 is set forth in the table below. 2012-2C(R) EETCs Series C(R) Aggregate principal issued $100 million Fixed interest rate per annum 4.70% Maturity date June 2021 Other Equipment Notes Issued in 2018 In the first nine months of 2018, American entered into agreements under which it borrowed $1.3 billion in connection with the financing of certain aircraft and pre-delivery purchase deposits. Debt incurred under these agreements matures in 2021 through 2029 and bears interest at fixed and variable rates of LIBOR plus an applicable margin averaging 4.09% at September 30, 2018 . 2018 Other Financing Activities 2013 Credit Facilities In May 2018, American and AAG entered into a Fourth Amendment (the Fourth Amendment) to the Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of May 21, 2015, which amended and restated the Credit and Guaranty Agreement dated as of June 27, 2013 (as previously amended, the Credit Agreement, and the term loan and revolving credit facilities established thereunder, the 2013 Credit Facilities), pursuant to which American refinanced $1.8 billion of the existing term loans outstanding under the 2013 Credit Facilities with proceeds of term loans incurred under the Fourth Amendment (the Replacement Term Loans). The interest rate margin on the Replacement Term Loans was reduced from 2.00% to 1.75% for those loans with interest rates based on LIBOR and from 1.00% to 0.75% for those loans with interest rates based on an index. Additionally, the Fourth Amendment extended the maturity date of the Replacement Term Loans to June 2025. 2014 Credit Facilities In September 2018, American and AAG entered into a Fifth Amendment (the Fifth Amendment) to the Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of April 20, 2015 (as previously amended, the 2014 Credit Agreement, and the term loan and revolving credit facilities established thereunder, as amended by the Fifth Amendment, the 2014 Credit Facilities). The Fifth Amendment provides for incremental term loans in the amount of $500 million . The terms are substantially similar to the terms of the existing term loans under the 2014 Credit Agreement including in relation to maturity and interest rate. As of September 30, 2018 , approximately $1.2 billion was outstanding under the term loan portion of the 2014 Credit Facilities and there were no other borrowings or letters of credit outstanding thereunder.
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Debt	Debt Long-term debt and capital lease obligations included in the condensed consolidated balance sheets consisted of (in millions): September 30, 2018 December 31, 2017 Secured 2013 Credit Facilities, variable interest rate of 3.98%, installments through 2025 $ 1,825 $ 1,825 2014 Credit Facilities, variable interest rate of 4.13%, installments through 2021 1,228 728 April 2016 Credit Facilities, variable interest rate of 4.24%, installments through 2023 980 990 December 2016 Credit Facilities, variable interest rate of 4.16%, installments through 2023 1,238 1,238 Aircraft enhanced equipment trust certificates (EETCs), fixed interest rates ranging from 3.00% to 9.75%, averaging 4.24%, maturing from 2018 to 2029 11,884 11,881 Equipment loans and other notes payable, fixed and variable interest rates ranging from 2.18% to 8.48%, averaging 4.00%, maturing from 2018 to 2029 5,078 5,259 Special facility revenue bonds, fixed interest rates ranging from 5.00% to 5.50%, maturing from 2019 to 2035 786 828 Other secured obligations, fixed interest rates ranging from 3.81% to 12.24%, maturing from 2021 to 2028 711 772 Total long-term debt and capital lease obligations 23,730 23,521 Less: Total unamortized debt discount, premium and issuance costs 238 227 Less: Current maturities 2,497 2,058 Long-term debt and capital lease obligations, net of current maturities $ 20,995 $ 21,236 The table below shows the maximum availability under revolving credit facilities, all of which were undrawn, as of September 30, 2018 (in millions): 2013 Revolving Facility $ 1,200 2014 Revolving Facility 1,000 April 2016 Revolving Facility 300 Total $ 2,500 The December 2016 Credit Facilities provide for a revolving credit facility that may be established in the future. 2018 Aircraft Financing Activities 2017-2 EETCs In August and October 2017, American created three pass-through trusts which issued approximately $1.0 billion aggregate face amount of Series 2017-2 Class AA, Class A and Class B EETCs (the 2017-2 EETCs). Of the approximately $1.0 billion 2017-2 EETCs, approximately $735 million of such proceeds were used in 2017 to purchase equipment notes issued by American in connection with the financing of 24 aircraft. The remaining approximately $283 million was used in the first six months of 2018 to purchase equipment notes issued by American in connection with financing the remaining 6 of 30 aircraft financed under the 2017-2 EETCs. Interest and principal payments on equipment notes issued in connection with the 2017-2 EETCs are payable semi-annually in April and October of each year, which interest payments began in April 2018 and principal payments will begin in October 2018. These equipment notes are secured by liens on the aircraft financed with the proceeds of the 2017-2 EETCs. Certain information regarding the 2017-2 EETC equipment notes as of September 30, 2018 is set forth in the table below. 2017-2 EETCs Series AA Series A Series B Aggregate principal issued $545 million $252 million $221 million Fixed interest rate per annum 3.35% 3.60% 3.70% Maturity date October 2029 October 2029 October 2025 2012-2C(R) EETCs On May 15, 2018, American created a pass-through trust which issued $100 million aggregate face amount of the Series 2012-2 Class C(R) EETCs (the 2012-2C(R) EETCs). Interest and principal payments on equipment notes issued in connection with the 2012-2C(R) EETCs are payable semiannually in June and December of each year, beginning in December 2018. American had previously issued $100 million aggregate face amount of Series 2012-2 Class C Certificates on June 6, 2013 (the 2012-2C Certificates) in connection with the financing of 11 aircraft previously delivered to American between May 2013 and October 2013. On June 1, 2018, American redeemed the Series C Equipment Notes relating to such 2012-2C Certificates (the 2012-2C Equipment Notes), which were scheduled to mature on June 3, 2018. The proceeds received from the 2012-2C(R) EETCs were used for the redemption of the 2012-2 Series C Equipment Notes and the repayment of the 2012-2C Certificates. Certain information regarding the 2012-2 Class C(R) EETC equipment notes as of September 30, 2018 is set forth in the table below. 2012-2C(R) EETCs Series C(R) Aggregate principal issued $100 million Fixed interest rate per annum 4.70% Maturity date June 2021 Other Equipment Notes Issued in 2018 In the first nine months of 2018, American entered into agreements under which it borrowed $1.3 billion in connection with the financing of certain aircraft and pre-delivery purchase deposits. Debt incurred under these agreements matures in 2021 through 2029 and bears interest at fixed and variable rates of LIBOR plus an applicable margin averaging 4.09% at September 30, 2018 . 2018 Other Financing Activities 2013 Credit Facilities In May 2018, American and AAG entered into a Fourth Amendment (the Fourth Amendment) to the Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of May 21, 2015, which amended and restated the Credit and Guaranty Agreement dated as of June 27, 2013 (as previously amended, the Credit Agreement, and the term loan and revolving credit facilities established thereunder, the 2013 Credit Facilities), pursuant to which American refinanced $1.8 billion of the existing term loans outstanding under the 2013 Credit Facilities with proceeds of term loans incurred under the Fourth Amendment (the Replacement Term Loans). The interest rate margin on the Replacement Term Loans was reduced from 2.00% to 1.75% for those loans with interest rates based on LIBOR and from 1.00% to 0.75% for those loans with interest rates based on an index. Additionally, the Fourth Amendment extended the maturity date of the Replacement Term Loans to June 2025. 2014 Credit Facilities In September 2018, American and AAG entered into a Fifth Amendment (the Fifth Amendment) to the Amended and Restated Credit and Guaranty Agreement, amending the Amended and Restated Credit and Guaranty Agreement dated as of April 20, 2015 (as previously amended, the 2014 Credit Agreement, and the term loan and revolving credit facilities established thereunder, as amended by the Fifth Amendment, the 2014 Credit Facilities). The Fifth Amendment provides for incremental term loans in the amount of $500 million . The terms are substantially similar to the terms of the existing term loans under the 2014 Credit Agreement including in relation to maturity and interest rate. As of September 30, 2018 , approximately $1.2 billion was outstanding under the term loan portion of the 2014 Credit Facilities and there were no other borrowings or letters of credit outstanding thereunder.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Taxes [Line Items]
Income Taxes	Income Taxes At December 31, 2017 , we had approximately $10.0 billion of federal net operating losses (NOLs) carried over from prior taxable years (NOL Carryforwards) to reduce future federal taxable income, substantially all of which we expect to be available for use in 2018 . The federal NOL Carryforwards will expire beginning in 2022 if unused. We also had approximately $3.4 billion of NOL Carryforwards to reduce future state taxable income at December 31, 2017 , which will expire in years 2018 through 2037 if unused. At December 31, 2017 , we had an AMT credit carryforward of approximately $339 million available for federal income tax purposes, which is expected to be substantially refunded no later than 2021 as a result of the repeal of corporate AMT. During the three and nine months ended September 30, 2018 , we recorded an income tax provision of $115 million and $404 million , respectively, which was substantially non-cash as we utilized our NOLs described above. For the nine months ended September 30, 2018 , our income tax provision included a $22 million special income tax charge to establish a required valuation allowance related to our estimated refund for AMT credits, which is now subject to a sequestration reduction rate of approximately 6% and an $18 million special income tax charge related to an international income tax matter. Substantially all of our income before income taxes is attributable to the United States. The 2017 Tax Act was enacted on December 22, 2017. The 2017 Tax Act is the most comprehensive tax change in more than 30 years . As of September 30, 2018 , we have not completed our evaluation of the 2017 Tax Act; however, to the extent possible, we have made a reasonable estimate of its effects, including the impact of lower corporate income tax rates (21% vs. 35%) on our deferred tax assets and liabilities and the one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred. The 2017 Tax Act is unclear in many respects and could be subject to potential amendments and technical corrections, as well as interpretations and implementation guidance by the U.S. Department of Treasury and the Internal Revenue Service. In addition, it is unclear how these U.S. federal income tax changes will affect state and local taxation, which often uses federal taxable income as a starting point for computing state and local tax liabilities. Accordingly, we have not yet been able to make a reasonable estimate of the impact of certain items and continue to account for those items based on the tax laws in effect prior to the 2017 Tax Act. As further interpretations, clarifications and amendments to the 2017 Tax Act are made, our future financial statements could be materially impacted.
American Airlines, Inc. [Member]
Income Taxes [Line Items]
Income Taxes	Income Taxes At December 31, 2017 , American had approximately $10.6 billion of federal net operating losses (NOLs) carried over from prior taxable years (NOL Carryforwards) to reduce future federal taxable income, substantially all of which, American expects to be available for use in 2018 . American is a member of AAG’s consolidated federal and certain state income tax returns. The amount of federal NOL Carryforwards available in those returns is $10.0 billion , substantially all of which is expected to be available for use in 2018 . The federal NOL Carryforwards will expire beginning in 2022 if unused. American also had approximately $3.2 billion of NOL Carryforwards to reduce future state taxable income at December 31, 2017 , which will expire in years 2018 through 2037 if unused. At December 31, 2017 , American had an AMT credit carryforward of approximately $452 million available for federal income tax purposes. During the three and nine months ended September 30, 2018 , American recorded an income tax provision of $133 million and $467 million , respectively, which was substantially non-cash as American utilized the NOLs described above. For the nine months ended September 30, 2018 , American's income tax provision included a $30 million special income tax charge to establish a required valuation allowance related to American's estimated refund for AMT credits, which is now subject to a sequestration reduction rate of approximately 6% and an $18 million special income tax charge related to an international income tax matter. Substantially all of American’s income before income taxes is attributable to the United States. The 2017 Tax Act was enacted on December 22, 2017. The 2017 Tax Act is the most comprehensive tax change in more than 30 years. As of September 30, 2018 , American has not completed its evaluation of the 2017 Tax Act; however, to the extent possible, American has made a reasonable estimate of its effects, including the impact of lower corporate income tax rates (21% vs. 35%) on its deferred tax assets and liabilities and the one-time transition tax on earnings of certain foreign subsidiaries that were previously tax deferred. The 2017 Tax Act is unclear in many respects and could be subject to potential amendments and technical corrections, as well as interpretations and implementation guidance by the U.S. Department of Treasury and the Internal Revenue Service. In addition, it is unclear how these U.S. federal income tax changes will affect state and local taxation, which often uses federal taxable income as a starting point for computing state and local tax liabilities. Accordingly, American has not yet been able to make a reasonable estimate of the impact of certain items and continues to account for those items based on the tax laws in effect prior to the 2017 Tax Act. As further interpretations, clarifications and amendments to the 2017 Tax Act are made, American's future financial statements could be materially impacted.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements Assets Measured at Fair Value on a Recurring Basis We utilize the market approach to measure fair value for our financial assets. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets. Our short-term investments classified as Level 2 primarily utilize broker quotes in a non-active market for valuation of these securities. No changes in valuation techniques or inputs occurred during the nine months ended September 30, 2018 . Assets measured at fair value on a recurring basis are summarized below (in millions): Fair Value Measurements as of September 30, 2018 Total Level 1 Level 2 Level 3 Short-term investments (1) (2) : Money market funds $ 68 $ 68 $ — $ — Corporate obligations 1,443 — 1,443 — Bank notes/certificates of deposit/time deposits 2,801 — 2,801 — Repurchase agreements 240 — 240 — 4,552 68 4,484 — Restricted cash and short-term investments (1) 154 12 142 — Long-term investments (3) 211 211 — — Total $ 4,917 $ 291 $ 4,626 $ — (1) Unrealized gains or losses on short-term investments are recorded in accumulated other comprehensive loss at each measurement date. (2) All short-term investments are classified as available-for-sale and stated at fair value. Our short-term investments mature in one year or less except for $942 million of bank notes/certificates of deposit/time deposits and $150 million of corporate obligations. (3) Long-term investments primarily include our equity investment in China Southern Airlines and are classified in other assets on our condensed consolidated balance sheets. Fair Value of Debt The fair value of our long-term debt was estimated using quoted market prices or discounted cash flow analyses, based on our current estimated incremental borrowing rates for similar types of borrowing arrangements. If our long-term debt was measured at fair value, it would have been classified as Level 2 in the fair value hierarchy. The carrying value and estimated fair value of our long-term debt, including current maturities, were as follows (in millions): September 30, 2018 December 31, 2017 Carrying Fair Carrying Fair Long-term debt, including current maturities $ 24,767 $ 24,932 $ 25,065 $ 25,848
American Airlines, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements Assets Measured at Fair Value on a Recurring Basis American utilizes the market approach to measure fair value for its financial assets. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets. American’s short-term investments classified as Level 2 primarily utilize broker quotes in a non-active market for valuation of these securities. No changes in valuation techniques or inputs occurred during the nine months ended September 30, 2018 . Assets measured at fair value on a recurring basis are summarized below (in millions): Fair Value Measurements as of September 30, 2018 Total Level 1 Level 2 Level 3 Short-term investments (1) (2) : Money market funds $ 59 $ 59 $ — $ — Corporate obligations 1,443 — 1,443 — Bank notes/certificates of deposit/time deposits 2,800 — 2,800 — Repurchase agreements 240 — 240 — 4,542 59 4,483 — Restricted cash and short-term investments (1) 154 12 142 — Long-term investments (3) 211 211 — — Total $ 4,907 $ 282 $ 4,625 $ — (1) Unrealized gains or losses on short-term investments are recorded in accumulated other comprehensive loss at each measurement date. (2) All short-term investments are classified as available-for-sale and stated at fair value. American’s short-term investments mature in one year or less except for $942 million of bank notes/certificates of deposit/time deposits and $150 million of corporate obligations. (3) Long-term investments primarily include American's equity investment in China Southern Airlines and are classified in other assets on its condensed consolidated balance sheets. Fair Value of Debt The fair value of American’s long-term debt was estimated using quoted market prices or discounted cash flow analyses, based on American’s current estimated incremental borrowing rates for similar types of borrowing arrangements. If American’s long-term debt was measured at fair value, it would have been classified as Level 2 in the fair value hierarchy. The carrying value and estimated fair value of American’s long-term debt, including current maturities, were as follows (in millions): September 30, 2018 December 31, 2017 Carrying Fair Carrying Fair Long-term debt, including current maturities $ 23,492 $ 23,640 $ 23,294 $ 24,029

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans The following table provides the components of net periodic benefit cost (income) (in millions): Pension Benefits Retiree Medical and Other Three Months Ended September 30, 2018 2017 2018 2017 Service cost $ 1 $ 1 $ 1 $ 1 Interest cost 169 180 9 10 Expected return on assets (226 ) (198 ) (6 ) (5 ) Amortization of: Prior service cost (benefit) 7 7 (59 ) (59 ) Unrecognized net loss (gain) 36 36 (5 ) (6 ) Net periodic benefit cost (income) $ (13 ) $ 26 $ (60 ) $ (59 ) Pension Benefits Retiree Medical and Other Nine Months Ended September 30, 2018 2017 2018 2017 Service cost $ 2 $ 2 $ 3 $ 3 Interest cost 507 541 26 29 Expected return on assets (678 ) (592 ) (17 ) (16 ) Amortization of: Prior service cost (benefit) 21 21 (178 ) (178 ) Unrecognized net loss (gain) 108 108 (15 ) (17 ) Net periodic benefit cost (income) $ (40 ) $ 80 $ (181 ) $ (179 ) Effective November 1, 2012, substantially all of our defined benefit pension plans were frozen. The components of net periodic benefit income other than the service cost component are included in nonoperating other income, net in the condensed consolidated statements of operations. During the first nine months of 2018 , we contributed $467 million to our defined benefit pension plans, including supplemental contributions of $425 million in addition to a $42 million minimum required contribution.
American Airlines, Inc. [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans The following table provides the components of net periodic benefit cost (income) (in millions): Pension Benefits Retiree Medical and Other Three Months Ended September 30, 2018 2017 2018 2017 Service cost $ 1 $ — $ 1 $ 1 Interest cost 168 179 9 10 Expected return on assets (225 ) (197 ) (6 ) (5 ) Amortization of: Prior service cost (benefit) 7 7 (59 ) (59 ) Unrecognized net loss (gain) 35 36 (5 ) (6 ) Net periodic benefit cost (income) $ (14 ) $ 25 $ (60 ) $ (59 ) Pension Benefits Retiree Medical and Other Nine Months Ended September 30, 2018 2017 2018 2017 Service cost $ 2 $ 1 $ 3 $ 3 Interest cost 504 538 26 29 Expected return on assets (675 ) (589 ) (17 ) (16 ) Amortization of: Prior service cost (benefit) 21 21 (178 ) (178 ) Unrecognized net loss (gain) 107 108 (15 ) (17 ) Net periodic benefit cost (income) $ (41 ) $ 79 $ (181 ) $ (179 ) Effective November 1, 2012, substantially all of American’s defined benefit pension plans were frozen. The components of net periodic benefit income other than the service cost component are included in nonoperating other income, net in the condensed consolidated statements of operations. During the first nine months of 2018 , American contributed $464 million to its defined benefit pension plans, including supplemental contributions of $425 million in addition to a $39 million minimum required contribution.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss (AOCI) are as follows (in millions): Pension, Retiree Unrealized Loss on Investments Income Tax (1) Total Balance at December 31, 2017 $ (4,523 ) $ (1 ) $ (630 ) $ (5,154 ) Amounts reclassified from AOCI (64 ) — 15 (2) (49 ) Net current-period other comprehensive income (loss) (64 ) — 15 (49 ) Balance at September 30, 2018 $ (4,587 ) $ (1 ) $ (615 ) $ (5,203 ) (1) Relates principally to pension, retiree medical and other postretirement benefits obligations that will not be recognized in net income until the obligations are fully extinguished. (2) Relates to pension, retiree medical and other postretirement benefits obligations and is recognized within the income tax provision on the condensed consolidated statement of operations. Reclassifications out of AOCI are as follows (in millions): Amounts reclassified from AOCI Affected line items on the AOCI Components Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Amortization of pension, retiree medical and other postretirement benefits: Prior service benefit $ (40 ) $ (33 ) $ (121 ) $ (100 ) Nonoperating other income, net Actuarial loss 23 19 72 57 Nonoperating other income, net Total reclassifications for the period, net of tax $ (17 ) $ (14 ) $ (49 ) $ (43 )
American Airlines, Inc. [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss The components of accumulated other comprehensive loss (AOCI) are as follows (in millions): Pension, Retiree Unrealized Loss on Investments Income Tax (1) Total Balance at December 31, 2017 $ (4,508 ) $ (1 ) $ (742 ) $ (5,251 ) Amounts reclassified from AOCI (65 ) — 15 (2) (50 ) Net current-period other comprehensive income (loss) (65 ) — 15 (50 ) Balance at September 30, 2018 $ (4,573 ) $ (1 ) $ (727 ) $ (5,301 ) (1) Relates principally to pension, retiree medical and other postretirement benefits obligations that will not be recognized in net income until the obligations are fully extinguished. (2) Relates to pension, retiree medical and other postretirement benefits obligations and is recognized within the income tax provision on the condensed consolidated statement of operations. Reclassifications out of AOCI are as follows (in millions): Amounts reclassified from AOCI Affected line items on the condensed consolidated statements of operations AOCI Components Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Amortization of pension, retiree medical and other postretirement benefits: Prior service benefit $ (40 ) $ (33 ) $ (121 ) $ (100 ) Nonoperating other income, net Actuarial loss 23 19 71 57 Nonoperating other income, net Total reclassifications for the period, net of tax $ (17 ) $ (14 ) $ (50 ) $ (43 )

Regional Expenses

Regional Expenses	9 Months Ended
	Sep. 30, 2018
Regional Expenses [Line Items]
Regional Expenses	Regional Expenses Expenses associated with American Eagle operations are classified as regional expenses on the condensed consolidated statements of operations. Regional expenses consist of the following (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Aircraft fuel and related taxes $ 506 $ 352 $ 1,369 $ 999 Salaries, wages and benefits 403 369 1,175 1,074 Capacity purchases from third-party regional carriers 363 404 1,081 1,210 Maintenance, materials and repairs 83 74 251 209 Other rent and landing fees 155 159 455 466 Aircraft rent 8 9 25 26 Selling expenses 94 95 276 269 Depreciation and amortization 76 79 241 235 Special items, net 2 (5 ) 1 (1 ) Other 143 118 449 361 Total regional expenses $ 1,833 $ 1,654 $ 5,323 $ 4,848
American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Regional Expenses	Regional Expenses Expenses associated with American Eagle operations are classified as regional expenses on the condensed consolidated statements of operations. Regional expenses consist of the following (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Aircraft fuel and related taxes $ 506 $ 352 $ 1,369 $ 999 Salaries, wages and benefits 86 85 254 246 Capacity purchases from third-party regional carriers 817 832 2,440 2,460 Maintenance, materials and repairs 1 2 6 5 Other rent and landing fees 148 152 436 449 Aircraft rent 7 7 20 20 Selling expenses 94 95 275 269 Depreciation and amortization 65 66 200 194 Special items, net — (1 ) — 3 Other 86 72 275 215 Total regional expenses $ 1,810 $ 1,662 $ 5,275 $ 4,860

Transactions with Related Parti

Transactions with Related Parties	9 Months Ended
	Sep. 30, 2018
American Airlines, Inc. [Member]
Entity Information [Line Items]
Transactions with Related Parties	Transactions with Related Parties The following represents the net receivables (payables) to related parties (in millions): September 30, 2018 December 31, 2017 AAG (1) $ 12,655 $ 10,968 AAG’s wholly-owned subsidiaries (2) (2,130 ) (2,146 ) Total $ 10,525 $ 8,822 (1) The increase in American’s net related party receivable from AAG is primarily due to American providing the cash funding for AAG’s dividend and share repurchase programs as well as the repayment of AAG's 6.125% senior notes. (2) The net payable to AAG’s wholly-owned subsidiaries consists primarily of amounts due under regional capacity purchase agreements with AAG’s wholly-owned regional airlines operating under the brand name of American Eagle.

Legal Proceedings

Legal Proceedings	9 Months Ended
	Sep. 30, 2018
Long-term Purchase Commitment [Line Items]
Legal Proceedings	Legal Proceedings Chapter 11 Cases . On November 29, 2011, AMR, American, and certain of AMR’s other direct and indirect domestic subsidiaries (the Debtors) filed voluntary petitions for relief under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the Southern District of New York (the Bankruptcy Court). On October 21, 2013, the Bankruptcy Court entered an order approving and confirming the Debtors’ fourth amended joint plan of reorganization (as amended, the Plan). On the Effective Date, December 9, 2013, the Debtors consummated their reorganization pursuant to the Plan and completed the Merger. Pursuant to rulings of the Bankruptcy Court, the Plan established the Disputed Claims Reserve to hold shares of AAG common stock reserved for issuance to disputed claimholders at the Effective Date that ultimately become holders of allowed claims. As of September 30, 2018 , there were approximately 24.5 million shares of AAG common stock remaining in the Disputed Claims Reserve. As disputed claims are resolved, the claimants will receive distributions of shares from the Disputed Claims Reserve. However, we are not required to distribute additional shares above the limits contemplated by the Plan, even if the shares remaining for distribution are not sufficient to fully pay any additional allowed unsecured claims. To the extent that any of the reserved shares remain undistributed upon resolution of all remaining disputed claims, such shares will not be returned to us but rather will be distributed to former AMR stockholders. DOJ Antitrust Civil Investigative Demand . In June 2015, we received a Civil Investigative Demand (CID) from the United States Department of Justice (DOJ) as part of an investigation into whether there have been illegal agreements or coordination of air passenger capacity. The CID seeks documents and other information from us, and other airlines have announced that they have received similar requests. We are cooperating fully with the DOJ investigation. Private Party Antitrust Action. Subsequent to announcement of the delivery of CIDs by the DOJ, we, along with Delta Air Lines, Inc., Southwest Airlines Co., United Airlines, Inc. and, in the case of litigation filed in Canada, Air Canada, have been named as defendants in approximately 100 putative class action lawsuits alleging unlawful agreements with respect to air passenger capacity. The U.S. lawsuits have been consolidated in the Federal District Court for the District of Columbia. On June 15, 2018, we reached a preliminary settlement agreement with the plaintiffs in the amount of $45 million that, once approved, will resolve all claims in the U.S. lawsuits. That settlement received preliminary approval from the Court on June 18, 2018. We expect the Court to issue final approval of the settlement later this year. Private Party Antitrust Action Related to the Merger . On August 6, 2013, a lawsuit captioned Carolyn Fjord, et al., v. AMR Corporation, et al., was filed in the United States Bankruptcy Court for the Southern District of New York. The complaint named as defendants US Airways Group, US Airways, AMR and American, alleged that the effect of the Merger may be to create a monopoly in violation of Section 7 of the Clayton Antitrust Act, and sought injunctive relief and/or divestiture. On November 27, 2013, the Bankruptcy Court denied plaintiffs’ motion to preliminarily enjoin the Merger. On August 29, 2018, the Court denied in part defendants' motion for summary judgment, and fully denied plaintiffs' cross-motion for summary judgment. A bench trial is expected to be scheduled in the next few months. We believe this lawsuit is without merit and intend to vigorously defend against the allegations. DOJ Investigation Related to the United States Postal Service . In April 2015, the DOJ informed us of an inquiry regarding American’s 2009 and 2011 contracts with the United States Postal Service for the international transportation of mail by air. In October 2015, we received a CID from the DOJ seeking certain information relating to these contracts and the DOJ has also sought information concerning certain of the airlines that transport mail on a codeshare basis. The DOJ has indicated it is investigating potential violations of the False Claims Act or other statutes. We are cooperating fully with the DOJ with regard to its investigation. General . In addition to the specifically identified legal proceedings, we and our subsidiaries are also engaged in other legal proceedings from time to time. Legal proceedings can be complex and take many months, or even years, to reach resolution, with the final outcome depending on a number of variables, some of which are not within our control. Therefore, although we will vigorously defend ourselves in each of the actions described above and such other legal proceedings, their ultimate resolution and potential financial and other impacts on us are uncertain but could be material. See Part II, Item 1A. Risk Factors – “ We may be a party to litigation in the normal course of business or otherwise, which could affect our financial position and liquidity ” for additional discussion.
American Airlines, Inc. [Member]
Long-term Purchase Commitment [Line Items]
Legal Proceedings	Legal Proceedings Chapter 11 Cases . On November 29, 2011, AMR, American, and certain of AMR’s other direct and indirect domestic subsidiaries (the Debtors) filed voluntary petitions for relief under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the Southern District of New York (the Bankruptcy Court). On October 21, 2013, the Bankruptcy Court entered an order approving and confirming the Debtors’ fourth amended joint plan of reorganization (as amended, the Plan). On the Effective Date, December 9, 2013, the Debtors consummated their reorganization pursuant to the Plan and completed the Merger. Pursuant to rulings of the Bankruptcy Court, the Plan established the Disputed Claims Reserve to hold shares of AAG common stock reserved for issuance to disputed claimholders at the Effective Date that ultimately become holders of allowed claims. As of September 30, 2018 , there were approximately 24.5 million shares of AAG common stock remaining in the Disputed Claims Reserve. As disputed claims are resolved, the claimants will receive distributions of shares from the Disputed Claims Reserve. However, American is not required to distribute additional shares above the limits contemplated by the Plan, even if the shares remaining for distribution are not sufficient to fully pay any additional allowed unsecured claims. To the extent that any of the reserved shares remain undistributed upon resolution of all remaining disputed claims, such shares will not be returned to American but rather will be distributed to former AMR stockholders. DOJ Antitrust Civil Investigative Demand . In June 2015, American received a Civil Investigative Demand (CID) from the United States Department of Justice (DOJ) as part of an investigation into whether there have been illegal agreements or coordination of air passenger capacity. The CID seeks documents and other information from American, and other airlines have announced that they have received similar requests. American is cooperating fully with the DOJ investigation. Private Party Antitrust Action. Subsequent to announcement of the delivery of CIDs by the DOJ, American, along with Delta Air Lines, Inc., Southwest Airlines Co., United Airlines, Inc. and, in the case of litigation filed in Canada, Air Canada, have been named as defendants in approximately 100 putative class action lawsuits alleging unlawful agreements with respect to air passenger capacity. The U.S. lawsuits have been consolidated in the Federal District Court for the District of Columbia. On June 15, 2018, American reached a preliminary settlement agreement with the plaintiffs in the amount of $45 million that, once approved, will resolve all claims in the U.S. lawsuits. That settlement received preliminary approval from the Court on June 18, 2018. American expects the Court to issue final approval of the settlement later this year. Private Party Antitrust Action Related to the Merger . On August 6, 2013, a lawsuit captioned Carolyn Fjord, et al., v. AMR Corporation, et al., was filed in the United States Bankruptcy Court for the Southern District of New York. The complaint named as defendants US Airways Group, US Airways, AMR and American, alleged that the effect of the Merger may be to create a monopoly in violation of Section 7 of the Clayton Antitrust Act, and sought injunctive relief and/or divestiture. On November 27, 2013, the Bankruptcy Court denied plaintiffs’ motion to preliminarily enjoin the Merger. On August 29, 2018, the Court denied in part defendants' motion for summary judgment, and fully denied plaintiffs' cross-motion for summary judgment. A bench trial is expected to be scheduled in the next few months. American believes this lawsuit is without merit and intends to vigorously defend against the allegations. DOJ Investigation Related to the United States Postal Service . In April 2015, the DOJ informed American of an inquiry regarding American’s 2009 and 2011 contracts with the United States Postal Service for the international transportation of mail by air. In October 2015, American received a CID from the DOJ seeking certain information relating to these contracts and the DOJ has also sought information concerning certain of the airlines that transport mail on a codeshare basis. The DOJ has indicated it is investigating potential violations of the False Claims Act or other statutes. American is cooperating fully with the DOJ with regard to its investigation. General . In addition to the specifically identified legal proceedings, American and its subsidiaries are also engaged in other legal proceedings from time to time. Legal proceedings can be complex and take many months, or even years, to reach resolution, with the final outcome depending on a number of variables, some of which are not within American’s control. Therefore, although American will vigorously defend itself in each of the actions described above and such other legal proceedings, their ultimate resolution and potential financial and other impacts on American are uncertain but could be material. See Part II, Item 1A. Risk Factors – “ We may be a party to litigation in the normal course of business or otherwise, which could affect our financial position and liquidity ” for additional discussion.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Event [Line Items]
Subsequent Events	Subsequent Events Dividend Declaration In October 2018, we announced that our Board of Directors declared a $0.10 per share dividend for stockholders of record as of November 6, 2018 , and payable on November 20, 2018 . Any future dividends that may be declared and paid from time to time will be subject to market and economic conditions, applicable legal requirements and other relevant factors. We are not obligated to continue a dividend for any fixed period, and the payment of dividends may be suspended at any time at our discretion. Equipment Notes In October 2018, American issued equipment notes in the principal amount of $74 million in connection with the financing of certain aircraft. These equipment notes are secured by liens on the aircraft financed and mature in October 2023.
American Airlines, Inc. [Member]
Subsequent Event [Line Items]
Subsequent Events	Subsequent Event Equipment Notes In October 2018, American issued equipment notes in the principal amount of $74 million in connection with the financing of certain aircraft. These equipment notes are secured by liens on the aircraft financed and mature in October 2023.

Basis of Presentation and Rec_2

Basis of Presentation and Recent Accounting Pronouncements (Policies)	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of American Airlines Group Inc. (we, us, our and similar terms, or AAG) should be read in conjunction with the consolidated financial statements contained in our Annual Report on Form 10-K for the year ended December 31, 2017 . The accompanying unaudited condensed consolidated financial statements include the accounts of AAG and its wholly-owned subsidiaries. AAG’s principal subsidiary is American Airlines, Inc. (American). All significant intercompany transactions have been eliminated. On December 9, 2013, a subsidiary of AMR Corporation (AMR) merged with and into US Airways Group, Inc. (US Airways Group), a Delaware corporation, which survived as a wholly-owned subsidiary of AAG, and AAG emerged from Chapter 11 (the Merger). Upon closing of the Merger and emergence from Chapter 11, AMR changed its name to American Airlines Group Inc. On December 30, 2015, in order to simplify AAG’s internal corporate structure, US Airways Group merged with and into AAG, with AAG as the surviving corporation. Immediately thereafter, US Airways, Inc. (US Airways), a wholly-owned subsidiary of US Airways Group, merged with and into American, with American as the surviving corporation. Management believes that all adjustments necessary for the fair presentation of results, consisting of normally recurring items, have been included in the unaudited condensed consolidated financial statements for the interim periods presented. The preparation of financial statements in accordance with accounting principles generally accepted in the United States (GAAP) requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The most significant areas of judgment relate to passenger revenue recognition, impairment of goodwill, impairment of long-lived and intangible assets, the loyalty program, valuation allowance for deferred tax assets, as well as pension and retiree medical and other postretirement benefits.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Standards Effective for 2018 Reporting Periods Effective January 1, 2018, we adopted the accounting pronouncements described below. ASU 2014-09: Revenue from Contracts with Customers (Topic 606) (the New Revenue Standard) The New Revenue Standard applies to all companies that enter into contracts with customers to transfer goods or services. We adopted the New Revenue Standard using the full retrospective method, which resulted in the recast of prior reporting periods. The adoption of the New Revenue Standard impacted our accounting for outstanding mileage credits earned through travel by AAdvantage loyalty program members. There was no change in accounting for sales of mileage credits to co-branded card or other partners. Prior to the adoption of the New Revenue Standard, we used the incremental cost method to account for the portion of our loyalty program liability related to mileage credits earned through travel, which were valued based on the estimated incremental cost of carrying one additional passenger. The New Revenue Standard required us to change our policy to the deferred revenue method and apply a relative selling price approach whereby a portion of each passenger ticket sale attributable to mileage credits earned is deferred and recognized in passenger revenue upon future mileage redemption. The value of the earned mileage credits is materially greater under the deferred revenue method than the value attributed to these mileage credits under the incremental cost method. The New Revenue Standard also required certain reclassifications, principally the reclassification of certain ancillary revenues previously classified and reported as other revenue to passenger revenue and as applicable to cargo revenue. Additionally, the New Revenue Standard required a gross presentation on the face of our condensed consolidated statement of operations for certain revenues and expenses that had previously been presented on a net basis. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 and recast consolidated balance sheet data as of December 31, 2017 presented below for the effects of adoption. ASU 2017-07: Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (the New Retirement Standard) The New Retirement Standard required all components of our net periodic benefit cost (income), with the exception of service cost, previously reported within operating expenses as salaries, wages and benefits, to be reclassified and reported within nonoperating income (expense). The New Retirement Standard was applied retrospectively, which resulted in the recast of each prior reporting period presented. The adoption of the New Retirement Standard had no impact on pre-tax income or net income reported. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 presented below for the effects of adoption. ASU 2016-01: Financial Instruments - Overall (Subtopic 825-10) This ASU made several modifications to Subtopic 825-10, including the elimination of the available-for-sale classification of equity investments, and it required equity investments with readily determinable fair values to be measured at fair value with changes in fair value recognized in net income. This standard was adopted prospectively as of January 1, 2018 and resulted in a $77 million cumulative effect adjustment credit to retained earnings related to our investment in China Southern Airlines Company Limited (China Southern Airlines), which was previously accounted for under the cost method. ASU 2016-18: Statement of Cash Flows (Topic 230): Restricted Cash This ASU required that the change in total cash, cash at beginning of period and cash at end of period on the statement of cash flows include restricted cash and also requires companies who report cash and restricted cash separately on the balance sheet to reconcile those amounts to the statement of cash flows. This standard was applied retrospectively, which resulted in the recast of the prior reporting period in the statement of cash flows. For the nine months ended September 30, 2018 and 2017 , $11 million and $104 million , respectively, of restricted cash is included in the total of cash and restricted cash balance at the end of period. A reconciliation of cash and restricted cash from our condensed consolidated statement of cash flows to the amounts reported within our condensed consolidated balance sheet is also included in a table below our condensed consolidated statement of cash flows . Impacts to Prior Period Results The effects of adoption of the New Revenue Standard and New Retirement Standard to our condensed consolidated statement of operations for the three and nine months ended September 30, 2017 were as follows (in millions, except per share amounts): New Revenue Standard New Retirement Standard Three Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 9,377 $ 59 $ 651 $ 9 $ — $ 10,096 Cargo 200 — 10 13 — 223 Other 1,301 — (661 ) 6 — 646 Total operating revenues 10,878 59 — 28 — 10,965 Total operating expenses 9,646 — — 28 35 9,709 Operating income 1,232 59 — — (35 ) 1,256 Total nonoperating expense, net (228 ) — — — 35 (193 ) Income before income taxes 1,004 59 — — — 1,063 Income tax provision 380 22 — — — 402 Net income $ 624 $ 37 $ — $ — $ — $ 661 Diluted earnings per common share $ 1.28 $ 1.36 New Revenue Standard New Retirement Standard Nine Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 27,114 $ 328 $ 1,976 $ 29 $ — $ 29,447 Cargo 568 — 31 34 — 633 Other 3,924 — (2,007 ) 14 — 1,931 Total operating revenues 31,606 328 — 77 — 32,011 Total operating expenses 28,238 — — 77 104 28,419 Operating income 3,368 328 — — (104 ) 3,592 Total nonoperating expense, net (709 ) — — — 104 (605 ) Income before income taxes 2,659 328 — — — 2,987 Income tax provision 998 124 — — — 1,122 Net income $ 1,661 $ 204 $ — $ — $ — $ 1,865 Diluted earnings per common share $ 3.35 $ 3.76 The effects of adoption of the New Revenue Standard to our December 31, 2017 consolidated balance sheet are as follows (in millions): As Reported New Revenue Standard As Recast Deferred tax asset $ 427 $ 1,389 $ 1,816 Air traffic liability 3,978 64 4,042 Current loyalty program liability 2,791 330 3,121 Noncurrent loyalty program liability — 5,701 5,701 Total stockholders' equity (deficit) 3,926 (4,706 ) (780 ) Standards Effective for 2019 Reporting Periods ASU 2016-02: Leases (Topic 842) (the New Lease Standard) The New Lease Standard requires lessees to recognize a lease liability and a right-of-use asset on the balance sheet and aligns many of the underlying principles of the new lessor model with those in the New Revenue Standard. The New Lease Standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. In July 2018, the FASB issued ASU 2018-11, "Leases (Topic 842) - Targeted Improvements," which provides entities an optional transition method to apply the New Lease Standard prospectively at the date of adoption instead of recasting prior reporting periods. If this optional transition method is elected, an entity would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. We will adopt the New Lease Standard effective January 1, 2019. We are currently evaluating how the adoption of the New Lease Standard will impact our consolidated financial statements. Interpretations are on-going and could have a material impact on our implementation of the New Lease Standard. Currently, we expect that the adoption of the New Lease Standard will have a material impact on our consolidated balance sheet due to the recognition of right-of-use assets and lease liabilities principally for certain leases currently accounted for as operating leases. ASU 2018-02: Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income This ASU provides financial statement preparers with an option to reclassify stranded tax effects within accumulated other comprehensive income to retained earnings due to the U.S. federal corporate income tax rate change as a result of H.R. 1, the 2017 Tax Cuts and Jobs Act (the 2017 Tax Act). The amount of the reclassification is the difference between the amount initially charged or credited directly to other comprehensive income at the previously enacted U.S. federal corporate income tax rate that remains in accumulated other comprehensive income and the amount that would have been charged or credited directly to other comprehensive income using the newly enacted U.S. federal corporate income tax rate, excluding the effect of any valuation allowance previously charged to income from continuing operations. This standard is effective for interim and annual reporting periods beginning after December 15, 2018, and early adoption is permitted. We expect we will adopt this standard effective January 1, 2019. The adoption of the standard may impact tax amounts stranded in accumulated other comprehensive income related to our pension and retiree medical and other postretirement benefit plans.
American Airlines, Inc. [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements of American Airlines, Inc. (American) should be read in conjunction with the consolidated financial statements contained in American’s Annual Report on Form 10-K for the year ended December 31, 2017 . American is the principal wholly-owned subsidiary of American Airlines Group Inc. (AAG). All significant intercompany transactions have been eliminated. On December 9, 2013, a subsidiary of AMR Corporation (AMR) merged with and into US Airways Group, Inc. (US Airways Group), a Delaware corporation, which survived as a wholly-owned subsidiary of AAG, and AAG emerged from Chapter 11 (the Merger). Upon closing of the Merger and emergence from Chapter 11, AMR changed its name to American Airlines Group Inc. On December 30, 2015, in order to simplify AAG’s internal corporate structure, US Airways Group merged with and into AAG, with AAG as the surviving corporation. Immediately thereafter, US Airways, Inc. (US Airways), a wholly-owned subsidiary of US Airways Group, merged with and into American, with American as the surviving corporation. Management believes that all adjustments necessary for the fair presentation of results, consisting of normally recurring items, have been included in the unaudited condensed consolidated financial statements for the interim periods presented. The preparation of financial statements in accordance with accounting principles generally accepted in the United States (GAAP) requires management to make certain estimates and assumptions that affect the reported amounts of assets and liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities at the date of the financial statements. Actual results could differ from those estimates. The most significant areas of judgment relate to passenger revenue recognition, impairment of goodwill, impairment of long-lived and intangible assets, the loyalty program, valuation allowance for deferred tax assets, as well as pension and retiree medical and other postretirement benefits.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Standards Effective for 2018 Reporting Periods Effective January 1, 2018, American adopted the accounting pronouncements described below. ASU 2014-09: Revenue from Contracts with Customers (Topic 606) (the New Revenue Standard) The New Revenue Standard applies to all companies that enter into contracts with customers to transfer goods or services. American adopted the New Revenue Standard using the full retrospective method, which resulted in the recast of prior reporting periods. The adoption of the New Revenue Standard impacted American’s accounting for outstanding mileage credits earned through travel by AAdvantage loyalty program members. There was no change in accounting for sales of mileage credits to co-branded card or other partners. Prior to the adoption of the New Revenue Standard, American used the incremental cost method to account for the portion of its loyalty program liability related to mileage credits earned through travel, which were valued based on the estimated incremental cost of carrying one additional passenger. The New Revenue Standard required American to change its policy to the deferred revenue method and apply a relative selling price approach whereby a portion of each passenger ticket sale attributable to mileage credits earned is deferred and recognized in passenger revenue upon future mileage redemption. The value of the earned mileage credits is materially greater under the deferred revenue method than the value attributed to these mileage credits under the incremental cost method. The New Revenue Standard also required certain reclassifications, principally the reclassification of certain ancillary revenues previously classified and reported as other revenue to passenger revenue and as applicable to cargo revenue. Additionally, the New Revenue Standard required a gross presentation on the face of American’s condensed consolidated statement of operations for certain revenues and expenses that had previously been presented on a net basis. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 and recast consolidated balance sheet data as of December 31, 2017 presented below for the effects of adoption. ASU 2017-07: Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (the New Retirement Standard) The New Retirement Standard required all components of American’s net periodic benefit cost (income), with the exception of service cost, previously reported within operating expenses as salaries, wages and benefits, to be reclassified and reported within nonoperating income (expense). The New Retirement Standard was applied retrospectively, which resulted in the recast of each prior reporting period presented. The adoption of the New Retirement Standard had no impact on pre-tax income or net income reported. See recast condensed consolidated statement of operations data for the three and nine months ended September 30, 2017 presented below for the effects of adoption. ASU 2016-01: Financial Instruments - Overall (Subtopic 825-10) This ASU made several modifications to Subtopic 825-10, including the elimination of the available-for-sale classification of equity investments, and it required equity investments with readily determinable fair values to be measured at fair value with changes in fair value recognized in net income. This standard was adopted prospectively as of January 1, 2018 and resulted in a $77 million cumulative effect adjustment credit to retained earnings related to American's investment in China Southern Airlines Company Limited (China Southern Airlines), which was previously accounted for under the cost method. ASU 2016-18: Statement of Cash Flows (Topic 230): Restricted Cash This ASU required that the change in total cash, cash at beginning of period and cash at end of period on the statement of cash flows include restricted cash and also requires companies who report cash and restricted cash separately on the balance sheet to reconcile those amounts to the statement of cash flows. This standard was applied retrospectively, which resulted in the recast of the prior reporting period in the statement of cash flows. For the nine months ended September 30, 2018 and 2017 , $11 million and $104 million , respectively, of restricted cash is included in the total of cash and restricted cash balance at the end of period. A reconciliation of cash and restricted cash from American's condensed consolidated statement of cash flows to the amounts reported within its condensed consolidated balance sheet is also included in a table below its condensed consolidated statement of cash flows . Impacts to Prior Period Results The effects of adoption of the New Revenue Standard and New Retirement Standard to American’s condensed consolidated statement of operations for the three and nine months ended September 30, 2017 were as follows (in millions): New Revenue Standard New Retirement Standard Three Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 9,377 $ 59 $ 651 $ 9 $ — $ 10,096 Cargo 200 — 10 13 — 223 Other 1,298 — (661 ) 6 — 643 Total operating revenues 10,875 59 — 28 — 10,962 Total operating expenses 9,650 — — 28 35 9,713 Operating income 1,225 59 — — (35 ) 1,249 Total nonoperating expense, net (181 ) — — — 35 (146 ) Income before income taxes 1,044 59 — — — 1,103 Income tax provision 395 22 — — — 417 Net income $ 649 $ 37 $ — $ — $ — $ 686 New Revenue Standard New Retirement Standard Nine Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 27,114 $ 328 $ 1,976 $ 29 $ — $ 29,447 Cargo 568 — 31 34 — 633 Other 3,916 — (2,007 ) 14 — 1,923 Total operating revenues 31,598 328 — 77 — 32,003 Total operating expenses 28,242 — — 77 104 28,423 Operating income 3,356 328 — — (104 ) 3,580 Total nonoperating expense, net (572 ) — — — 104 (468 ) Income before income taxes 2,784 328 — — — 3,112 Income tax provision 1,046 124 — — — 1,170 Net income $ 1,738 $ 204 $ — $ — $ — $ 1,942 The effects of adoption of the New Revenue Standard to American’s December 31, 2017 consolidated balance sheet are as follows (in millions): As Reported New Revenue Standard As Recast Deferred tax asset $ 682 $ 1,389 $ 2,071 Air traffic liability 3,978 64 4,042 Current loyalty program liability 2,791 330 3,121 Noncurrent loyalty program liability — 5,701 5,701 Total stockholder’s equity (deficit) 14,594 (4,706 ) 9,888 Standards Effective for 2019 Reporting Periods ASU 2016-02: Leases (Topic 842) (the New Lease Standard) The New Lease Standard requires lessees to recognize a lease liability and a right-of-use asset on the balance sheet and aligns many of the underlying principles of the new lessor model with those in the New Revenue Standard. The New Lease Standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. In July 2018, the FASB issued ASU 2018-11, "Leases (Topic 842) - Targeted Improvements," which provides entities an optional transition method to apply the New Lease Standard prospectively at the date of adoption instead of recasting prior reporting periods. If this optional transition method is elected, an entity would recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. American will adopt the New Lease Standard effective January 1, 2019. American is currently evaluating how the adoption of the New Lease Standard will impact its consolidated financial statements. Interpretations are on-going and could have a material impact on American's implementation of the New Lease Standard. Currently, American expects that the adoption of the New Lease Standard will have a material impact on its consolidated balance sheet due to the recognition of right-of-use assets and lease liabilities principally for certain leases currently accounted for as operating leases. ASU 2018-02: Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income This ASU provides financial statement preparers with an option to reclassify stranded tax effects within accumulated other comprehensive income to retained earnings due to the U.S. federal corporate income tax rate change as a result of H.R. 1, the 2017 Tax Cuts and Jobs Act (the 2017 Tax Act). The amount of the reclassification is the difference between the amount initially charged or credited directly to other comprehensive income at the previously enacted U.S. federal corporate income tax rate that remains in accumulated other comprehensive income and the amount that would have been charged or credited directly to other comprehensive income using the newly enacted U.S. federal corporate income tax rate, excluding the effect of any valuation allowance previously charged to income from continuing operations. This standard is effective for interim and annual reporting periods beginning after December 15, 2018, and early adoption is permitted. American expects it will adopt this standard effective January 1, 2019. The adoption of the standard may impact tax amounts stranded in accumulated other comprehensive income related to American's pension and retiree medical and other postretirement benefit plans.

Basis of Presentation and Rec_3

Basis of Presentation and Recent Accounting Pronouncements (Tables)	9 Months Ended
	Sep. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The effects of adoption of the New Revenue Standard and New Retirement Standard to our condensed consolidated statement of operations for the three and nine months ended September 30, 2017 were as follows (in millions, except per share amounts): New Revenue Standard New Retirement Standard Three Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 9,377 $ 59 $ 651 $ 9 $ — $ 10,096 Cargo 200 — 10 13 — 223 Other 1,301 — (661 ) 6 — 646 Total operating revenues 10,878 59 — 28 — 10,965 Total operating expenses 9,646 — — 28 35 9,709 Operating income 1,232 59 — — (35 ) 1,256 Total nonoperating expense, net (228 ) — — — 35 (193 ) Income before income taxes 1,004 59 — — — 1,063 Income tax provision 380 22 — — — 402 Net income $ 624 $ 37 $ — $ — $ — $ 661 Diluted earnings per common share $ 1.28 $ 1.36 New Revenue Standard New Retirement Standard Nine Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 27,114 $ 328 $ 1,976 $ 29 $ — $ 29,447 Cargo 568 — 31 34 — 633 Other 3,924 — (2,007 ) 14 — 1,931 Total operating revenues 31,606 328 — 77 — 32,011 Total operating expenses 28,238 — — 77 104 28,419 Operating income 3,368 328 — — (104 ) 3,592 Total nonoperating expense, net (709 ) — — — 104 (605 ) Income before income taxes 2,659 328 — — — 2,987 Income tax provision 998 124 — — — 1,122 Net income $ 1,661 $ 204 $ — $ — $ — $ 1,865 Diluted earnings per common share $ 3.35 $ 3.76 The effects of adoption of the New Revenue Standard to our December 31, 2017 consolidated balance sheet are as follows (in millions): As Reported New Revenue Standard As Recast Deferred tax asset $ 427 $ 1,389 $ 1,816 Air traffic liability 3,978 64 4,042 Current loyalty program liability 2,791 330 3,121 Noncurrent loyalty program liability — 5,701 5,701 Total stockholders' equity (deficit) 3,926 (4,706 ) (780 )
American Airlines, Inc. [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The effects of adoption of the New Revenue Standard and New Retirement Standard to American’s condensed consolidated statement of operations for the three and nine months ended September 30, 2017 were as follows (in millions): New Revenue Standard New Retirement Standard Three Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 9,377 $ 59 $ 651 $ 9 $ — $ 10,096 Cargo 200 — 10 13 — 223 Other 1,298 — (661 ) 6 — 643 Total operating revenues 10,875 59 — 28 — 10,962 Total operating expenses 9,650 — — 28 35 9,713 Operating income 1,225 59 — — (35 ) 1,249 Total nonoperating expense, net (181 ) — — — 35 (146 ) Income before income taxes 1,044 59 — — — 1,103 Income tax provision 395 22 — — — 417 Net income $ 649 $ 37 $ — $ — $ — $ 686 New Revenue Standard New Retirement Standard Nine Months Ended As Reported Deferred Revenue Method Ancillary Revenue Reclassifications Gross Versus Net Presentation Reclassifications As Recast Operating revenues: Passenger $ 27,114 $ 328 $ 1,976 $ 29 $ — $ 29,447 Cargo 568 — 31 34 — 633 Other 3,916 — (2,007 ) 14 — 1,923 Total operating revenues 31,598 328 — 77 — 32,003 Total operating expenses 28,242 — — 77 104 28,423 Operating income 3,356 328 — — (104 ) 3,580 Total nonoperating expense, net (572 ) — — — 104 (468 ) Income before income taxes 2,784 328 — — — 3,112 Income tax provision 1,046 124 — — — 1,170 Net income $ 1,738 $ 204 $ — $ — $ — $ 1,942 The effects of adoption of the New Revenue Standard to American’s December 31, 2017 consolidated balance sheet are as follows (in millions): As Reported New Revenue Standard As Recast Deferred tax asset $ 682 $ 1,389 $ 2,071 Air traffic liability 3,978 64 4,042 Current loyalty program liability 2,791 330 3,121 Noncurrent loyalty program liability — 5,701 5,701 Total stockholder’s equity (deficit) 14,594 (4,706 ) 9,888

Special Items, Net (Tables)

Special Items, Net (Tables)	9 Months Ended
	Sep. 30, 2018
Restructuring Cost and Reserve [Line Items]
Components of Special Items, Net Included in Condensed Consolidated Statements of Operations	Special items, net in the condensed consolidated statements of operations consisted of the following expenses (income) (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Fleet restructuring expenses (1) $ 109 $ 62 $ 275 $ 174 Merger integration expenses (2) 68 62 188 192 Severance expenses (3) 20 — 20 — Mark-to-market adjustments on bankruptcy obligations, net (4) 17 (12 ) (39 ) 7 Litigation settlement — — 45 — Intangible asset impairment (5) — — 26 — Labor contract expenses — — 13 45 Other operating charges, net 1 — 35 14 Mainline operating special items, net 215 112 563 432 Regional operating special items, net 2 (5 ) 1 (1 ) Mark-to-market adjustments on equity investments, net (6) 15 — 82 — Debt refinancing and extinguishment charges — 3 13 12 Nonoperating special items, net 15 3 95 12 Income tax special items, net (7) — — 40 — (1) Fleet restructuring expenses principally included accelerated depreciation and remaining lease payments for aircraft and related equipment grounded or expected to be grounded earlier than planned. (2) Merger integration expenses included costs associated with our integration projects, principally our flight attendant, human resources and payroll, and technical operations integrations. (3) Severance expenses primarily included costs associated with reductions in headcount of management and support staff team members. (4) Bankruptcy obligations will ultimately be settled in shares of our common stock. Accordingly, fluctuations in our stock price result in mark-to-market adjustments to these obligations. (5) Intangible asset impairment includes a non-cash charge to write-off our Brazil route authority as a result of ratification of the U.S.-Brazil open skies agreement. (6) Mark-to-market adjustments on equity investments relate to net unrealized losses resulting from the change in market value primarily associated with our equity investments in China Southern Airlines and Mesa Air Group, Inc. (7) Income tax special items for the nine months ended September 30, 2018 included a $22 million charge to income tax expense to establish a required valuation allowance related to our estimated refund for Alternative Minimum Tax (AMT) credits and an $18 million charge related to an international income tax matter.
American Airlines, Inc. [Member]
Restructuring Cost and Reserve [Line Items]
Components of Special Items, Net Included in Condensed Consolidated Statements of Operations	Special items, net in the condensed consolidated statements of operations consisted of the following expenses (income) (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Fleet restructuring expenses (1) $ 109 $ 62 $ 275 $ 174 Merger integration expenses (2) 68 62 188 192 Severance expenses (3) 20 — 20 — Mark-to-market adjustments on bankruptcy obligations, net (4) 17 (12 ) (39 ) 7 Litigation settlement — — 45 — Intangible asset impairment (5) — — 26 — Labor contract expenses — — 13 45 Other operating charges, net 1 — 35 14 Mainline operating special items, net 215 112 563 432 Regional operating special items, net — (1 ) — 3 Mark-to-market adjustments on equity investments, net (6) 15 — 82 — Debt refinancing and extinguishment charges — 3 13 12 Nonoperating special items, net 15 3 95 12 Income tax special items, net (7) — — 48 — (1) Fleet restructuring expenses principally included accelerated depreciation and remaining lease payments for aircraft and related equipment grounded or expected to be grounded earlier than planned. (2) Merger integration expenses included costs associated with American's integration projects, principally its flight attendant, human resources and payroll, and technical operations integrations. (3) Severance expenses primarily included costs associated with reductions in headcount of management and support staff team members. (4) Bankruptcy obligations will ultimately be settled in shares of AAG common stock. Accordingly, fluctuations in AAG's stock price result in mark-to-market adjustments to these obligations. (5) Intangible asset impairment includes a non-cash charge to write-off American's Brazil route authority as a result of ratification of the U.S.-Brazil open skies agreement. (6) Mark-to-market adjustments on equity investments relate to net unrealized losses resulting from the change in market value primarily associated with our equity investments in China Southern Airlines and Mesa Air Group, Inc. (7) Income tax special items for the nine months ended September 30, 2018 included a $30 million charge to income tax expense to establish a required valuation allowance related to American's estimated refund for Alternative Minimum Tax (AMT) credits and an $18 million charge related to an international income tax matter.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Computation of Basic and Diluted Earnings per Common Share	The following table sets forth the computation of basic and diluted earnings per common share (EPS) (in millions, except share and per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Basic EPS: Net income $ 341 $ 661 $ 1,094 $ 1,865 Weighted average common shares outstanding (in thousands) 460,526 484,772 465,452 493,164 Basic EPS $ 0.74 $ 1.36 $ 2.35 $ 3.78 Diluted EPS: Net income for purposes of computing diluted EPS $ 341 $ 661 $ 1,094 $ 1,865 Share computation for diluted EPS (in thousands): Basic weighted average common shares outstanding 460,526 484,772 465,452 493,164 Dilutive effect of stock awards 981 1,853 1,456 2,632 Diluted weighted average common shares outstanding 461,507 486,625 466,908 495,796 Diluted EPS $ 0.74 $ 1.36 $ 2.34 $ 3.76 Restricted stock unit awards excluded from the calculation of diluted EPS because inclusion would be antidilutive (in thousands) 1,694 66 1,128 432

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Sep. 30, 2018
Entity Information [Line Items]
Disaggregation of Revenue	The following are the significant categories comprising our reported operating revenues (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Passenger revenue: Passenger travel $ 9,790 $ 9,400 $ 28,278 $ 27,179 Loyalty revenue - travel (1) 771 696 2,436 2,268 Total passenger revenue 10,561 10,096 30,714 29,447 Cargo 260 223 748 633 Other: Loyalty revenue - marketing services 613 527 1,765 1,574 Other revenue 125 119 376 357 Total other revenue 738 646 2,141 1,931 Total operating revenues $ 11,559 $ 10,965 $ 33,603 $ 32,011 (1) Loyalty revenue included in passenger revenue is principally comprised of mileage credit redemptions for air travel awards from mileage credits earned through travel and mileage credits sold to co-branded card and other partners. See discussion of Loyalty Revenue below. The following is our total passenger revenue by geographic region (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Domestic $ 7,424 $ 7,162 $ 22,071 $ 21,522 Latin America 1,210 1,183 3,939 3,622 Atlantic 1,504 1,363 3,471 3,170 Pacific 423 388 1,233 1,133 Total passenger revenue $ 10,561 $ 10,096 $ 30,714 $ 29,447
Schedule of Contract Liabilities	September 30, 2018 December 31, 2017 (In millions) Loyalty program liability $ 8,559 $ 8,822 Air traffic liability 5,040 4,042 Total $ 13,599 $ 12,864 The balance of the loyalty program liability fluctuates based on seasonal patterns, which impact the volume of mileage credits issued through travel or sold to co-branded card and other partners (deferral of revenue) and mileage credits redeemed (recognition of revenue). Changes in loyalty program liability are as follows (in millions): Balance at December 31, 2017 $ 8,822 Deferral of revenue 2,302 Recognition of revenue (1) (2,565 ) Balance at September 30, 2018 (2) $ 8,559 (1) Principally relates to revenue recognized from the redemption of mileage credits for both air and non-air travel awards. Mileage credits are combined in one homogenous pool and are not separately identifiable. As such, the revenue is comprised of miles that were part of the loyalty program deferred revenue balance at the beginning of the period as well as miles that were issued during the period. (2) Mileage credits can be redeemed at any time and do not expire as long as that AAdvantage member has any type of qualifying activity at least every 18 months. As of September 30, 2018 , our current loyalty program liability was $3.2 billion and represents our current estimate of revenue expected to be recognized in the next twelve months based on historical trends, with the balance reflected in long-term loyalty program liability expected to be recognized as revenue in periods thereafter.
American Airlines, Inc. [Member]
Entity Information [Line Items]
Disaggregation of Revenue	The following are the significant categories comprising American's reported operating revenues (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Passenger revenue: Passenger travel $ 9,790 $ 9,400 $ 28,278 $ 27,179 Loyalty revenue - travel (1) 771 696 2,436 2,268 Total passenger revenue 10,561 10,096 30,714 29,447 Cargo 260 223 748 633 Other: Loyalty revenue - marketing services 613 527 1,765 1,574 Other revenue 122 116 367 349 Total other revenue 735 643 2,132 1,923 Total operating revenues $ 11,556 $ 10,962 $ 33,594 $ 32,003 (1) Loyalty revenue included in passenger revenue is principally comprised of mileage credit redemptions for air travel awards from mileage credits earned through travel and mileage credits sold to co-branded card and other partners. See discussion of Loyalty Revenue below. The following is American's total passenger revenue by geographic region (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Domestic $ 7,424 $ 7,162 $ 22,071 $ 21,522 Latin America 1,210 1,183 3,939 3,622 Atlantic 1,504 1,363 3,471 3,170 Pacific 423 388 1,233 1,133 Total passenger revenue $ 10,561 $ 10,096 $ 30,714 $ 29,447
Schedule of Contract Liabilities	September 30, 2018 December 31, 2017 (In millions) Loyalty program liability $ 8,559 $ 8,822 Air traffic liability 5,040 4,042 Total $ 13,599 $ 12,864 The balance of the loyalty program liability fluctuates based on seasonal patterns, which impact the volume of mileage credits issued through travel or sold to co-branded card and other partners (deferral of revenue) and mileage credits redeemed (recognition of revenue). Changes in loyalty program liability are as follows (in millions): Balance at December 31, 2017 $ 8,822 Deferral of revenue 2,302 Recognition of revenue (1) (2,565 ) Balance at September 30, 2018 (2) $ 8,559 (1) Principally relates to revenue recognized from the redemption of mileage credits for both air and non-air travel awards. Mileage credits are combined in one homogenous pool and are not separately identifiable. As such, the revenue is comprised of miles that were part of the loyalty program deferred revenue balance at the beginning of the period as well as miles that were issued during the period. (2) Mileage credits can be redeemed at any time and do not expire as long as that AAdvantage member has any type of qualifying activity at least every 18 months. As of September 30, 2018 , American's current loyalty program liability was $3.2 billion and represents American's current estimate of revenue expected to be recognized in the next twelve months based on historical trends, with the balance reflected in long-term loyalty program liability expected to be recognized as revenue in periods thereafter.

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Instrument [Line Items]
Schedule of Long-Term Debt	Long-term debt and capital lease obligations included in the condensed consolidated balance sheets consisted of (in millions): September 30, 2018 December 31, 2017 Secured 2013 Credit Facilities, variable interest rate of 3.98%, installments through 2025 $ 1,825 $ 1,825 2014 Credit Facilities, variable interest rate of 4.13%, installments through 2021 1,228 728 April 2016 Credit Facilities, variable interest rate of 4.24%, installments through 2023 980 990 December 2016 Credit Facilities, variable interest rate of 4.16%, installments through 2023 1,238 1,238 Aircraft enhanced equipment trust certificates (EETCs), fixed interest rates ranging from 3.00% to 9.75%, averaging 4.24%, maturing from 2018 to 2029 11,884 11,881 Equipment loans and other notes payable, fixed and variable interest rates ranging from 2.18% to 8.48%, averaging 4.00%, maturing from 2018 to 2029 5,078 5,259 Special facility revenue bonds, fixed interest rates ranging from 5.00% to 8.00%, maturing from 2019 to 2035 815 857 Other secured obligations, fixed interest rates ranging from 3.81% to 12.24%, maturing from 2021 to 2028 711 773 23,759 23,551 Unsecured 5.50% senior notes, interest only payments until due in 2019 750 750 4.625% senior notes, interest only payments until due in 2020 500 500 6.125% senior notes, interest only payments until due in 2018 — 500 1,250 1,750 Total long-term debt and capital lease obligations 25,009 25,301 Less: Total unamortized debt discount, premium and issuance costs 242 236 Less: Current maturities 2,493 2,554 Long-term debt and capital lease obligations, net of current maturities $ 22,274 $ 22,511
Summary of Availability under Revolving Credit Facilities	The table below shows the maximum availability under revolving credit facilities, all of which were undrawn, as of September 30, 2018 (in millions): 2013 Revolving Facility $ 1,200 2014 Revolving Facility 1,000 April 2016 Revolving Facility 300 Total $ 2,500
Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Schedule of Long-Term Debt	Certain information regarding the 2017-2 EETC equipment notes as of September 30, 2018 is set forth in the table below. 2017-2 EETCs Series AA Series A Series B Aggregate principal issued $545 million $252 million $221 million Fixed interest rate per annum 3.35% 3.60% 3.70% Maturity date October 2029 October 2029 October 2025 Certain information regarding the 2012-2 Class C(R) EETC equipment notes as of September 30, 2018 is set forth in the table below. 2012-2C(R) EETCs Series C(R) Aggregate principal issued $100 million Fixed interest rate per annum 4.70% Maturity date June 2021
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Schedule of Long-Term Debt	Long-term debt and capital lease obligations included in the condensed consolidated balance sheets consisted of (in millions): September 30, 2018 December 31, 2017 Secured 2013 Credit Facilities, variable interest rate of 3.98%, installments through 2025 $ 1,825 $ 1,825 2014 Credit Facilities, variable interest rate of 4.13%, installments through 2021 1,228 728 April 2016 Credit Facilities, variable interest rate of 4.24%, installments through 2023 980 990 December 2016 Credit Facilities, variable interest rate of 4.16%, installments through 2023 1,238 1,238 Aircraft enhanced equipment trust certificates (EETCs), fixed interest rates ranging from 3.00% to 9.75%, averaging 4.24%, maturing from 2018 to 2029 11,884 11,881 Equipment loans and other notes payable, fixed and variable interest rates ranging from 2.18% to 8.48%, averaging 4.00%, maturing from 2018 to 2029 5,078 5,259 Special facility revenue bonds, fixed interest rates ranging from 5.00% to 5.50%, maturing from 2019 to 2035 786 828 Other secured obligations, fixed interest rates ranging from 3.81% to 12.24%, maturing from 2021 to 2028 711 772 Total long-term debt and capital lease obligations 23,730 23,521 Less: Total unamortized debt discount, premium and issuance costs 238 227 Less: Current maturities 2,497 2,058 Long-term debt and capital lease obligations, net of current maturities $ 20,995 $ 21,236
Summary of Availability under Revolving Credit Facilities	The table below shows the maximum availability under revolving credit facilities, all of which were undrawn, as of September 30, 2018 (in millions): 2013 Revolving Facility $ 1,200 2014 Revolving Facility 1,000 April 2016 Revolving Facility 300 Total $ 2,500
American Airlines, Inc. [Member] | Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Schedule of Long-Term Debt	Certain information regarding the 2012-2 Class C(R) EETC equipment notes as of September 30, 2018 is set forth in the table below. 2012-2C(R) EETCs Series C(R) Aggregate principal issued $100 million Fixed interest rate per annum 4.70% Maturity date June 2021 Certain information regarding the 2017-2 EETC equipment notes as of September 30, 2018 is set forth in the table below. 2017-2 EETCs Series AA Series A Series B Aggregate principal issued $545 million $252 million $221 million Fixed interest rate per annum 3.35% 3.60% 3.70% Maturity date October 2029 October 2029 October 2025

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Summary of Assets Measured at Fair Value on Recurring Basis	Assets measured at fair value on a recurring basis are summarized below (in millions): Fair Value Measurements as of September 30, 2018 Total Level 1 Level 2 Level 3 Short-term investments (1) (2) : Money market funds $ 68 $ 68 $ — $ — Corporate obligations 1,443 — 1,443 — Bank notes/certificates of deposit/time deposits 2,801 — 2,801 — Repurchase agreements 240 — 240 — 4,552 68 4,484 — Restricted cash and short-term investments (1) 154 12 142 — Long-term investments (3) 211 211 — — Total $ 4,917 $ 291 $ 4,626 $ — (1) Unrealized gains or losses on short-term investments are recorded in accumulated other comprehensive loss at each measurement date. (2) All short-term investments are classified as available-for-sale and stated at fair value. Our short-term investments mature in one year or less except for $942 million of bank notes/certificates of deposit/time deposits and $150 million of corporate obligations. (3) Long-term investments primarily include our equity investment in China Southern Airlines and are classified in other assets on our condensed consolidated balance sheets.
Schedule of Carrying Value and Estimated Fair Value of Long-Term Debt, Including Current Maturities	The carrying value and estimated fair value of our long-term debt, including current maturities, were as follows (in millions): September 30, 2018 December 31, 2017 Carrying Fair Carrying Fair Long-term debt, including current maturities $ 24,767 $ 24,932 $ 25,065 $ 25,848
American Airlines, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Summary of Assets Measured at Fair Value on Recurring Basis	Assets measured at fair value on a recurring basis are summarized below (in millions): Fair Value Measurements as of September 30, 2018 Total Level 1 Level 2 Level 3 Short-term investments (1) (2) : Money market funds $ 59 $ 59 $ — $ — Corporate obligations 1,443 — 1,443 — Bank notes/certificates of deposit/time deposits 2,800 — 2,800 — Repurchase agreements 240 — 240 — 4,542 59 4,483 — Restricted cash and short-term investments (1) 154 12 142 — Long-term investments (3) 211 211 — — Total $ 4,907 $ 282 $ 4,625 $ — (1) Unrealized gains or losses on short-term investments are recorded in accumulated other comprehensive loss at each measurement date. (2) All short-term investments are classified as available-for-sale and stated at fair value. American’s short-term investments mature in one year or less except for $942 million of bank notes/certificates of deposit/time deposits and $150 million of corporate obligations. (3) Long-term investments primarily include American's equity investment in China Southern Airlines and are classified in other assets on its condensed consolidated balance sheets.
Schedule of Carrying Value and Estimated Fair Value of Long-Term Debt, Including Current Maturities	The carrying value and estimated fair value of American’s long-term debt, including current maturities, were as follows (in millions): September 30, 2018 December 31, 2017 Carrying Fair Carrying Fair Long-term debt, including current maturities $ 23,492 $ 23,640 $ 23,294 $ 24,029

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Components of Net Periodic Benefit Cost (Income)	The following table provides the components of net periodic benefit cost (income) (in millions): Pension Benefits Retiree Medical and Other Three Months Ended September 30, 2018 2017 2018 2017 Service cost $ 1 $ 1 $ 1 $ 1 Interest cost 169 180 9 10 Expected return on assets (226 ) (198 ) (6 ) (5 ) Amortization of: Prior service cost (benefit) 7 7 (59 ) (59 ) Unrecognized net loss (gain) 36 36 (5 ) (6 ) Net periodic benefit cost (income) $ (13 ) $ 26 $ (60 ) $ (59 ) Pension Benefits Retiree Medical and Other Nine Months Ended September 30, 2018 2017 2018 2017 Service cost $ 2 $ 2 $ 3 $ 3 Interest cost 507 541 26 29 Expected return on assets (678 ) (592 ) (17 ) (16 ) Amortization of: Prior service cost (benefit) 21 21 (178 ) (178 ) Unrecognized net loss (gain) 108 108 (15 ) (17 ) Net periodic benefit cost (income) $ (40 ) $ 80 $ (181 ) $ (179 )
American Airlines, Inc. [Member]
Defined Benefit Plan Disclosure [Line Items]
Components of Net Periodic Benefit Cost (Income)	The following table provides the components of net periodic benefit cost (income) (in millions): Pension Benefits Retiree Medical and Other Three Months Ended September 30, 2018 2017 2018 2017 Service cost $ 1 $ — $ 1 $ 1 Interest cost 168 179 9 10 Expected return on assets (225 ) (197 ) (6 ) (5 ) Amortization of: Prior service cost (benefit) 7 7 (59 ) (59 ) Unrecognized net loss (gain) 35 36 (5 ) (6 ) Net periodic benefit cost (income) $ (14 ) $ 25 $ (60 ) $ (59 ) Pension Benefits Retiree Medical and Other Nine Months Ended September 30, 2018 2017 2018 2017 Service cost $ 2 $ 1 $ 3 $ 3 Interest cost 504 538 26 29 Expected return on assets (675 ) (589 ) (17 ) (16 ) Amortization of: Prior service cost (benefit) 21 21 (178 ) (178 ) Unrecognized net loss (gain) 107 108 (15 ) (17 ) Net periodic benefit cost (income) $ (41 ) $ 79 $ (181 ) $ (179 )

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss (AOCI) are as follows (in millions): Pension, Retiree Unrealized Loss on Investments Income Tax (1) Total Balance at December 31, 2017 $ (4,523 ) $ (1 ) $ (630 ) $ (5,154 ) Amounts reclassified from AOCI (64 ) — 15 (2) (49 ) Net current-period other comprehensive income (loss) (64 ) — 15 (49 ) Balance at September 30, 2018 $ (4,587 ) $ (1 ) $ (615 ) $ (5,203 ) (1) Relates principally to pension, retiree medical and other postretirement benefits obligations that will not be recognized in net income until the obligations are fully extinguished. (2) Relates to pension, retiree medical and other postretirement benefits obligations and is recognized within the income tax provision on the condensed consolidated statement of operations.
Reclassifications out of Accumulated Other Comprehensive Loss	Reclassifications out of AOCI are as follows (in millions): Amounts reclassified from AOCI Affected line items on the AOCI Components Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Amortization of pension, retiree medical and other postretirement benefits: Prior service benefit $ (40 ) $ (33 ) $ (121 ) $ (100 ) Nonoperating other income, net Actuarial loss 23 19 72 57 Nonoperating other income, net Total reclassifications for the period, net of tax $ (17 ) $ (14 ) $ (49 ) $ (43 )
American Airlines, Inc. [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Loss	The components of accumulated other comprehensive loss (AOCI) are as follows (in millions): Pension, Retiree Unrealized Loss on Investments Income Tax (1) Total Balance at December 31, 2017 $ (4,508 ) $ (1 ) $ (742 ) $ (5,251 ) Amounts reclassified from AOCI (65 ) — 15 (2) (50 ) Net current-period other comprehensive income (loss) (65 ) — 15 (50 ) Balance at September 30, 2018 $ (4,573 ) $ (1 ) $ (727 ) $ (5,301 ) (1) Relates principally to pension, retiree medical and other postretirement benefits obligations that will not be recognized in net income until the obligations are fully extinguished. (2) Relates to pension, retiree medical and other postretirement benefits obligations and is recognized within the income tax provision on the condensed consolidated statement of operations.
Reclassifications out of Accumulated Other Comprehensive Loss	Reclassifications out of AOCI are as follows (in millions): Amounts reclassified from AOCI Affected line items on the condensed consolidated statements of operations AOCI Components Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Amortization of pension, retiree medical and other postretirement benefits: Prior service benefit $ (40 ) $ (33 ) $ (121 ) $ (100 ) Nonoperating other income, net Actuarial loss 23 19 71 57 Nonoperating other income, net Total reclassifications for the period, net of tax $ (17 ) $ (14 ) $ (50 ) $ (43 )

Regional Expenses (Tables)

Regional Expenses (Tables)	9 Months Ended
	Sep. 30, 2018
Regional Expenses [Line Items]
Components of Regional Expenses	Regional expenses consist of the following (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Aircraft fuel and related taxes $ 506 $ 352 $ 1,369 $ 999 Salaries, wages and benefits 403 369 1,175 1,074 Capacity purchases from third-party regional carriers 363 404 1,081 1,210 Maintenance, materials and repairs 83 74 251 209 Other rent and landing fees 155 159 455 466 Aircraft rent 8 9 25 26 Selling expenses 94 95 276 269 Depreciation and amortization 76 79 241 235 Special items, net 2 (5 ) 1 (1 ) Other 143 118 449 361 Total regional expenses $ 1,833 $ 1,654 $ 5,323 $ 4,848
American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Components of Regional Expenses	Regional expenses consist of the following (in millions): Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Aircraft fuel and related taxes $ 506 $ 352 $ 1,369 $ 999 Salaries, wages and benefits 86 85 254 246 Capacity purchases from third-party regional carriers 817 832 2,440 2,460 Maintenance, materials and repairs 1 2 6 5 Other rent and landing fees 148 152 436 449 Aircraft rent 7 7 20 20 Selling expenses 94 95 275 269 Depreciation and amortization 65 66 200 194 Special items, net — (1 ) — 3 Other 86 72 275 215 Total regional expenses $ 1,810 $ 1,662 $ 5,275 $ 4,860

Transactions with Related Par_2

Transactions with Related Parties (Tables)	9 Months Ended
	Sep. 30, 2018
American Airlines, Inc. [Member]
Entity Information [Line Items]
Summary of Net Receivables (Payables) to Related Parties	The following represents the net receivables (payables) to related parties (in millions): September 30, 2018 December 31, 2017 AAG (1) $ 12,655 $ 10,968 AAG’s wholly-owned subsidiaries (2) (2,130 ) (2,146 ) Total $ 10,525 $ 8,822 (1) The increase in American’s net related party receivable from AAG is primarily due to American providing the cash funding for AAG’s dividend and share repurchase programs as well as the repayment of AAG's 6.125% senior notes. (2) The net payable to AAG’s wholly-owned subsidiaries consists primarily of amounts due under regional capacity purchase agreements with AAG’s wholly-owned regional airlines operating under the brand name of American Eagle.

Basis of Presentation and Rec_4

Basis of Presentation and Recent Accounting Pronouncements (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	$ 11	$ 104	$ 11	$ 104
Operating revenues:
Operating revenues	11,559	10,965	33,603	32,011
Total operating expenses	10,910	9,709	31,495	28,419
Operating income	649	1,256	2,108	3,592
Total nonoperating expense, net	(193)	(193)	(610)	(605)
Income before income taxes	456	1,063	1,498	2,987
Income tax provision	115	402	404	1,122
Net income	$ 341	$ 661	$ 1,094	$ 1,865
Diluted earnings per common share (in dollars per share)	$ 0.74	$ 1.36	$ 2.34	$ 3.76
Deferred tax asset	$ 1,293		$ 1,293			$ 1,816
Noncurrent loyalty program liability	5,317		5,317			5,701
Total stockholders' equity (deficit)	(568)		(568)			(780)
As Reported [Member]
Operating revenues:
Operating revenues		$ 10,878		$ 31,606
Total operating expenses		9,646		28,238
Operating income		1,232		3,368
Total nonoperating expense, net		(228)		(709)
Income before income taxes		1,004		2,659
Income tax provision		380		998
Net income		$ 624		$ 1,661
Diluted earnings per common share (in dollars per share)		$ 1.28		$ 3.35
Deferred tax asset						427
Total stockholders' equity (deficit)						3,926
Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member]
Operating revenues:
Deferred tax asset						1,389
Total stockholders' equity (deficit)						(4,706)
Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Deferred Revenue Method [Member]
Operating revenues:
Operating revenues		$ 59		$ 328
Operating income		59		328
Income before income taxes		59		328
Income tax provision		22		124
Net income		37		204
Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		28		77
Total operating expenses		28		77
Restatement Adjustment [Member] | Accounting Standards Update 2017-07 [Member]
Operating revenues:
Total operating expenses		35		104
Operating income		(35)		(104)
Total nonoperating expense, net		35		104
Retained Earnings [Member] | Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption					$ 77
Passenger [Member]
Operating revenues:
Operating revenues	10,561	10,096	30,714	29,447
Passenger [Member] | As Reported [Member]
Operating revenues:
Operating revenues		9,377		27,114
Passenger [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Deferred Revenue Method [Member]
Operating revenues:
Operating revenues		59		328
Passenger [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Ancillary Revenue Reclassifications [Member]
Operating revenues:
Operating revenues		651		1,976
Passenger [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		9		29
Cargo [Member]
Operating revenues:
Operating revenues	260	223	748	633
Cargo [Member] | As Reported [Member]
Operating revenues:
Operating revenues		200		568
Cargo [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Ancillary Revenue Reclassifications [Member]
Operating revenues:
Operating revenues		10		31
Cargo [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		13		34
Other [Member]
Operating revenues:
Operating revenues	738	646	2,141	1,931
Other [Member] | As Reported [Member]
Operating revenues:
Operating revenues		1,301		3,924
Other [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Ancillary Revenue Reclassifications [Member]
Operating revenues:
Operating revenues		(661)		(2,007)
Other [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		6		14
Air traffic liability [Member]
Operating revenues:
Deferred revenue, current	5,040		5,040			4,042
Air traffic liability [Member] | As Reported [Member]
Operating revenues:
Deferred revenue, current						3,978
Air traffic liability [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member]
Operating revenues:
Deferred revenue, current						64
Loyalty program liability [Member]
Operating revenues:
Deferred revenue, current	3,242		3,242			3,121
Noncurrent loyalty program liability						5,701
Loyalty program liability [Member] | As Reported [Member]
Operating revenues:
Deferred revenue, current						2,791
Noncurrent loyalty program liability						0
Loyalty program liability [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member]
Operating revenues:
Deferred revenue, current						330
Noncurrent loyalty program liability						5,701
American Airlines, Inc. [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash	11	104	11	104
Operating revenues:
Operating revenues	11,556	10,962	33,594	32,003
Total operating expenses	10,887	9,713	31,440	28,423
Operating income	669	1,249	2,154	3,580
Total nonoperating expense, net	(133)	(146)	(429)	(468)
Income before income taxes	536	1,103	1,725	3,112
Income tax provision	133	417	467	1,170
Net income	403	686	1,258	1,942
Deferred tax asset	1,429		1,429			2,071
Noncurrent loyalty program liability	5,317		5,317			5,701
Total stockholders' equity (deficit)	11,240		11,240			9,888
American Airlines, Inc. [Member] | As Reported [Member]
Operating revenues:
Operating revenues		10,875		31,598
Total operating expenses		9,650		28,242
Operating income		1,225		3,356
Total nonoperating expense, net		(181)		(572)
Income before income taxes		1,044		2,784
Income tax provision		395		1,046
Net income		649		1,738
Deferred tax asset						682
Total stockholders' equity (deficit)						14,594
American Airlines, Inc. [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member]
Operating revenues:
Deferred tax asset						1,389
Total stockholders' equity (deficit)						(4,706)
American Airlines, Inc. [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Deferred Revenue Method [Member]
Operating revenues:
Operating revenues		59		328
Operating income		59		328
Income before income taxes		59		328
Income tax provision		22		124
Net income		37		204
American Airlines, Inc. [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		28		77
Total operating expenses		28		77
American Airlines, Inc. [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2017-07 [Member]
Operating revenues:
Total operating expenses		35		104
Operating income		(35)		(104)
Total nonoperating expense, net		35		104
American Airlines, Inc. [Member] | Retained Earnings [Member] | Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect of new accounting principle in period of adoption					$ 77
American Airlines, Inc. [Member] | Passenger [Member]
Operating revenues:
Operating revenues	10,561	10,096	30,714	29,447
American Airlines, Inc. [Member] | Passenger [Member] | As Reported [Member]
Operating revenues:
Operating revenues		9,377		27,114
American Airlines, Inc. [Member] | Passenger [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Deferred Revenue Method [Member]
Operating revenues:
Operating revenues		59		328
American Airlines, Inc. [Member] | Passenger [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Ancillary Revenue Reclassifications [Member]
Operating revenues:
Operating revenues		651		1,976
American Airlines, Inc. [Member] | Passenger [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		9		29
American Airlines, Inc. [Member] | Cargo [Member]
Operating revenues:
Operating revenues	260	223	748	633
American Airlines, Inc. [Member] | Cargo [Member] | As Reported [Member]
Operating revenues:
Operating revenues		200		568
American Airlines, Inc. [Member] | Cargo [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Ancillary Revenue Reclassifications [Member]
Operating revenues:
Operating revenues		10		31
American Airlines, Inc. [Member] | Cargo [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		13		34
American Airlines, Inc. [Member] | Other [Member]
Operating revenues:
Operating revenues	735	643	2,132	1,923
American Airlines, Inc. [Member] | Other [Member] | As Reported [Member]
Operating revenues:
Operating revenues		1,298		3,916
American Airlines, Inc. [Member] | Other [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Ancillary Revenue Reclassifications [Member]
Operating revenues:
Operating revenues		(661)		(2,007)
American Airlines, Inc. [Member] | Other [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09, Gross Versus Net Presentation [Member]
Operating revenues:
Operating revenues		$ 6		$ 14
American Airlines, Inc. [Member] | Air traffic liability [Member]
Operating revenues:
Deferred revenue, current	5,040		5,040			4,042
American Airlines, Inc. [Member] | Air traffic liability [Member] | As Reported [Member]
Operating revenues:
Deferred revenue, current						3,978
American Airlines, Inc. [Member] | Air traffic liability [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member]
Operating revenues:
Deferred revenue, current						64
American Airlines, Inc. [Member] | Loyalty program liability [Member]
Operating revenues:
Deferred revenue, current	$ 3,242		$ 3,242			3,121
Noncurrent loyalty program liability						5,701
American Airlines, Inc. [Member] | Loyalty program liability [Member] | As Reported [Member]
Operating revenues:
Deferred revenue, current						2,791
Noncurrent loyalty program liability						0
American Airlines, Inc. [Member] | Loyalty program liability [Member] | Restatement Adjustment [Member] | Accounting Standards Update 2014-09 [Member]
Operating revenues:
Deferred revenue, current						330
Noncurrent loyalty program liability						$ 5,701

Special Items, Net (Details)

Special Items, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restructuring Cost and Reserve [Line Items]
Fleet restructuring expenses	$ 109	$ 62	$ 275	$ 174
Merger integration expenses	68	62	188	192
Severance expenses	20	0	20	0
Mark-to-market adjustments on bankruptcy obligations, net	17	(12)	(39)	7
Litigation settlement	0	0	45	0
Intangible asset impairment	0	0	26	0
Labor contract expenses	0	0	13	45
Other operating charges, net	1	0	35	14
Mainline operating special items, net	215	112	563	432
Regional operating special items, net	2	(5)	1	(1)
Mark-to-market adjustments on equity investments, net	15	0	82	0
Debt refinancing and extinguishment charges	0	3	13	12
Nonoperating special items, net	15	3	95	12
Income tax special items, net	0	0	40	0
Foreign Tax Authority [Member]
Restructuring Cost and Reserve [Line Items]
Income tax special items, net			18
Alternative Minimum Tax Credit Carryforward [Member]
Restructuring Cost and Reserve [Line Items]
Change in deferred tax assets valuation allowance			22
American Airlines, Inc. [Member]
Restructuring Cost and Reserve [Line Items]
Fleet restructuring expenses	109	62	275	174
Merger integration expenses	68	62	188	192
Severance expenses	20	0	20	0
Mark-to-market adjustments on bankruptcy obligations, net	17	(12)	(39)	7
Litigation settlement	0	0	45	0
Intangible asset impairment	0	0	26	0
Labor contract expenses	0	0	13	45
Other operating charges, net	1	0	35	14
Mainline operating special items, net	215	112	563	432
Regional operating special items, net	0	(1)	0	3
Mark-to-market adjustments on equity investments, net	15	0	82	0
Debt refinancing and extinguishment charges	0	3	13	12
Nonoperating special items, net	15	3	95	12
Income tax special items, net	$ 0	$ 0	48	$ 0
American Airlines, Inc. [Member] | Foreign Tax Authority [Member]
Restructuring Cost and Reserve [Line Items]
Income tax special items, net			18
American Airlines, Inc. [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Restructuring Cost and Reserve [Line Items]
Change in deferred tax assets valuation allowance			$ 30

Earnings Per Common Share (Deta

Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic EPS:
Net income	$ 341	$ 661	$ 1,094	$ 1,865
Weighted average common shares outstanding (in thousands) (in shares)	460,526	484,772	465,452	493,164
Basic EPS (in dollars per share)	$ 0.74	$ 1.36	$ 2.35	$ 3.78
Diluted EPS:
Net income for purposes of computing diluted EPS	$ 341	$ 661	$ 1,094	$ 1,865
Share computation for diluted EPS (in thousands):
Basic weighted average common shares outstanding (in shares)	460,526	484,772	465,452	493,164
Dilutive effect of stock awards (in shares)	981	1,853	1,456	2,632
Diluted weighted average common shares outstanding (in shares)	461,507	486,625	466,908	495,796
Diluted EPS (in dollars per share)	$ 0.74	$ 1.36	$ 2.34	$ 3.76
Restricted stock unit awards excluded from the calculation of diluted EPS because inclusion would be antidilutive (in thousands) (in shares)	1,694	66	1,128	432

Share Repurchase Programs and_2

Share Repurchase Programs and Dividends - Share Repurchase Programs (Details) $ / shares in Units, shares in Millions	9 Months Ended	51 Months Ended
	Sep. 30, 2018USD ($)$ / sharesshares	Sep. 30, 2018USD ($)program$ / sharesshares	Apr. 30, 2018USD ($)
Equity, Class of Treasury Stock [Line Items]
Stock repurchase programs, authorized amount	$ 13,000,000,000	$ 13,000,000,000
Number of share repurchase programs authorized | program		7
Stock repurchase programs, remaining authorized amount	$ 1,700,000,000	$ 1,700,000,000
Stock repurchased (in shares) | shares	16.6	278.9
Aggregate stock repurchase price	$ 800,000,000	$ 11,300,000,000
Average cost per share (in dollars per share) | $ / shares	$ 48.15	$ 40.69
Share Repurchase Program April 2018 [Member]
Equity, Class of Treasury Stock [Line Items]
Stock repurchase programs, authorized amount			$ 2,000,000,000

Share Repurchase Programs and_3

Share Repurchase Programs and Dividends - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Equity [Abstract]
Cash dividends declared (in dollars per share)	$ 0.1	$ 0.1	$ 0.3000	$ 0.3
Payments of dividends	$ 46		$ 140

Revenue Recognition - Significa

Revenue Recognition - Significant Categories of Reported Operating Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue from External Customer [Line Items]
Operating revenues	$ 11,559	$ 10,965	$ 33,603	$ 32,011
Passenger [Member]
Revenue from External Customer [Line Items]
Operating revenues	10,561	10,096	30,714	29,447
Passenger travel [Member]
Revenue from External Customer [Line Items]
Operating revenues	9,790	9,400	28,278	27,179
Loyalty revenue - travel [Member]
Revenue from External Customer [Line Items]
Operating revenues	771	696	2,436	2,268
Cargo [Member]
Revenue from External Customer [Line Items]
Operating revenues	260	223	748	633
Other [Member]
Revenue from External Customer [Line Items]
Operating revenues	738	646	2,141	1,931
Loyalty revenue - marketing services [Member]
Revenue from External Customer [Line Items]
Operating revenues	613	527	1,765	1,574
Other revenue [Member]
Revenue from External Customer [Line Items]
Operating revenues	125	119	376	357
American Airlines, Inc. [Member]
Revenue from External Customer [Line Items]
Operating revenues	11,556	10,962	33,594	32,003
American Airlines, Inc. [Member] | Passenger [Member]
Revenue from External Customer [Line Items]
Operating revenues	10,561	10,096	30,714	29,447
American Airlines, Inc. [Member] | Passenger travel [Member]
Revenue from External Customer [Line Items]
Operating revenues	9,790	9,400	28,278	27,179
American Airlines, Inc. [Member] | Loyalty revenue - travel [Member]
Revenue from External Customer [Line Items]
Operating revenues	771	696	2,436	2,268
American Airlines, Inc. [Member] | Cargo [Member]
Revenue from External Customer [Line Items]
Operating revenues	260	223	748	633
American Airlines, Inc. [Member] | Other [Member]
Revenue from External Customer [Line Items]
Operating revenues	735	643	2,132	1,923
American Airlines, Inc. [Member] | Loyalty revenue - marketing services [Member]
Revenue from External Customer [Line Items]
Operating revenues	613	527	1,765	1,574
American Airlines, Inc. [Member] | Other revenue [Member]
Revenue from External Customer [Line Items]
Operating revenues	$ 122	$ 116	$ 367	$ 349

Revenue Recognition - Passenger

Revenue Recognition - Passenger Revenue by Geographic Region (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Airline Destination Disclosure [Line Items]
Operating revenues	$ 11,559	$ 10,965	$ 33,603	$ 32,011
Passenger [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	10,561	10,096	30,714	29,447
Passenger [Member] | Domestic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	7,424	7,162	22,071	21,522
Passenger [Member] | Latin America [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,210	1,183	3,939	3,622
Passenger [Member] | Atlantic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,504	1,363	3,471	3,170
Passenger [Member] | Pacific [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	423	388	1,233	1,133
American Airlines, Inc. [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	11,556	10,962	33,594	32,003
American Airlines, Inc. [Member] | Passenger [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	10,561	10,096	30,714	29,447
American Airlines, Inc. [Member] | Passenger [Member] | Domestic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	7,424	7,162	22,071	21,522
American Airlines, Inc. [Member] | Passenger [Member] | Latin America [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,210	1,183	3,939	3,622
American Airlines, Inc. [Member] | Passenger [Member] | Atlantic [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	1,504	1,363	3,471	3,170
American Airlines, Inc. [Member] | Passenger [Member] | Pacific [Member]
Airline Destination Disclosure [Line Items]
Operating revenues	$ 423	$ 388	$ 1,233	$ 1,133

Revenue Recognition - Narrative

Revenue Recognition - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)	Sep. 30, 2017USD ($)	Sep. 30, 2018USD ($)component	Sep. 30, 2017USD ($)
Disaggregation of Revenue [Line Items]
Operating revenues	$ 11,559	$ 10,965	$ 33,603	$ 32,011
Contract receivables settlement duration			7 days
Loyalty program [Member]
Disaggregation of Revenue [Line Items]
Contract term			one to nine years
Payment term			30 days
Number of revenue components | component			2
Recognition of revenue			$ 2,565
Loyalty revenue - marketing services [Member]
Disaggregation of Revenue [Line Items]
Operating revenues	613	527	$ 1,765	1,574
Air traffic liability [Member]
Disaggregation of Revenue [Line Items]
Contract term			one year
Recognition of revenue			$ 3,100
American Airlines, Inc. [Member]
Disaggregation of Revenue [Line Items]
Operating revenues	11,556	10,962	$ 33,594	32,003
Contract receivables settlement duration			7 days
American Airlines, Inc. [Member] | Loyalty program [Member]
Disaggregation of Revenue [Line Items]
Contract term			one to nine years
Payment term			30 days
Number of revenue components | component			2
Recognition of revenue			$ 2,565
American Airlines, Inc. [Member] | Loyalty revenue - marketing services [Member]
Disaggregation of Revenue [Line Items]
Operating revenues	$ 613	$ 527	$ 1,765	$ 1,574
American Airlines, Inc. [Member] | Air traffic liability [Member]
Disaggregation of Revenue [Line Items]
Contract term			one year
Recognition of revenue			$ 3,100

Revenue Recognition - Signifi_2

Revenue Recognition - Significant Contract Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Contract balances, liability	$ 13,599	$ 12,864
Loyalty program liability [Member]
Disaggregation of Revenue [Line Items]
Contract balances, liability	8,559	8,822
Air traffic liability [Member]
Disaggregation of Revenue [Line Items]
Contract balances, liability	5,040	4,042
American Airlines, Inc. [Member]
Disaggregation of Revenue [Line Items]
Contract balances, liability	13,599	12,864
American Airlines, Inc. [Member] | Loyalty program liability [Member]
Disaggregation of Revenue [Line Items]
Contract balances, liability	8,559	8,822
American Airlines, Inc. [Member] | Air traffic liability [Member]
Disaggregation of Revenue [Line Items]
Contract balances, liability	$ 5,040	$ 4,042

Revenue Recognition - Changes i

Revenue Recognition - Changes in Loyalty Program Liability (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 12,864
Ending balance	$ 13,599
Inactive period before expiration of mileage credits	18 months
Loyalty program liability [Member]
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 8,822
Deferral of revenue	2,302
Recognition of revenue	(2,565)
Ending balance	8,559
Deferred revenue, current	3,242	$ 3,121
American Airlines, Inc. [Member]
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	12,864
Ending balance	$ 13,599
Inactive period before expiration of mileage credits	18 months
American Airlines, Inc. [Member] | Loyalty program liability [Member]
Movement In Contract With Customer, Liability [Roll Forward]
Beginning balance	$ 8,822
Deferral of revenue	2,302
Recognition of revenue	(2,565)
Ending balance	8,559
Deferred revenue, current	$ 3,242	$ 3,121

Debt - Components of Long-Term

Debt - Components of Long-Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 25,009	$ 25,301
Less: Total unamortized debt discount, premium and issuance costs	242	236
Less: Current maturities	2,493	2,554
Long-term debt and capital lease obligations, net of current maturities	22,274	22,511
Secured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	23,759	23,551
Secured Debt [Member] | 2013 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 1,825	1,825
Variable interest rate	3.98%
Secured Debt [Member] | 2014 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 1,228	728
Variable interest rate	4.13%
Secured Debt [Member] | April 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 980	990
Variable interest rate	4.24%
Secured Debt [Member] | December 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 1,238	1,238
Variable interest rate	4.16%
Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 11,884	11,881
Average interest rate	4.24%
Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	3.00%
Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	9.75%
Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 5,078	5,259
Average interest rate	4.00%
Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	2.18%
Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	8.48%
Secured Debt [Member] | Special Facility Revenue Bonds [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 815	857
Secured Debt [Member] | Special Facility Revenue Bonds [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	5.00%
Secured Debt [Member] | Special Facility Revenue Bonds [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	8.00%
Secured Debt [Member] | Other Secured Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 711	773
Secured Debt [Member] | Other Secured Obligations [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	3.81%
Secured Debt [Member] | Other Secured Obligations [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	12.24%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 1,250	1,750
Unsecured Debt [Member] | 5.50% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 750	750
Interest rate	5.50%
Unsecured Debt [Member] | 4.625% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 500	500
Interest rate
Unsecured Debt [Member] | 6.125% Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 0	$ 500
Interest rate	6.125%	4.63%
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Less: Total unamortized debt discount, premium and issuance costs	$ 238	$ 227
Less: Current maturities	2,497	2,058
Long-term debt and capital lease obligations, net of current maturities	20,995	21,236
American Airlines, Inc. [Member] | Secured Debt [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	23,730	23,521
American Airlines, Inc. [Member] | Secured Debt [Member] | 2013 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 1,825	1,825
Variable interest rate	3.98%
American Airlines, Inc. [Member] | Secured Debt [Member] | 2014 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 1,228	728
Variable interest rate	4.13%
American Airlines, Inc. [Member] | Secured Debt [Member] | April 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 980	990
Variable interest rate	4.24%
American Airlines, Inc. [Member] | Secured Debt [Member] | December 2016 Credit Facilities [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 1,238	1,238
Variable interest rate	4.16%
American Airlines, Inc. [Member] | Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 11,884	11,881
Average interest rate	4.24%
American Airlines, Inc. [Member] | Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	3.00%
American Airlines, Inc. [Member] | Secured Debt [Member] | Enhanced Equipment Trust Certificates (EETC) [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	9.75%
American Airlines, Inc. [Member] | Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 5,078	5,259
Average interest rate	4.00%
American Airlines, Inc. [Member] | Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	2.18%
American Airlines, Inc. [Member] | Secured Debt [Member] | Equipment Loans and Other Notes Payable [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	8.48%
American Airlines, Inc. [Member] | Secured Debt [Member] | Special Facility Revenue Bonds [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 786	828
American Airlines, Inc. [Member] | Secured Debt [Member] | Special Facility Revenue Bonds [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	5.00%
American Airlines, Inc. [Member] | Secured Debt [Member] | Special Facility Revenue Bonds [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	5.50%
American Airlines, Inc. [Member] | Secured Debt [Member] | Other Secured Obligations [Member]
Debt Instrument [Line Items]
Total long-term debt and capital lease obligations	$ 711	$ 772
American Airlines, Inc. [Member] | Secured Debt [Member] | Other Secured Obligations [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest rate	3.81%
American Airlines, Inc. [Member] | Secured Debt [Member] | Other Secured Obligations [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest rate	12.24%

Debt - Summary of Availability

Debt - Summary of Availability under Revolving Credit Facilities (Details) - Revolving Credit Facility [Member] - Secured Debt [Member]	Sep. 30, 2018USD ($)
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 2,500,000,000
2013 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,200,000,000
2014 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,000,000,000
April 2016 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	300,000,000
American Airlines, Inc. [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	2,500,000,000
American Airlines, Inc. [Member] | 2013 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,200,000,000
American Airlines, Inc. [Member] | 2014 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	1,000,000,000
American Airlines, Inc. [Member] | April 2016 Credit Facilities [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 300,000,000

Debt - 2017-2 EETCs (Details)

Debt - 2017-2 EETCs (Details) - Enhanced Equipment Trust Certificates (EETC) [Member] - 2017-2 EETC [Member] $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Oct. 31, 2017USD ($)trust	Jun. 30, 2018USD ($)Aircraft	Dec. 31, 2017USD ($)Aircraft
Debt Instrument [Line Items]
Number of pass through trusts issued | trust	3
Debt instrument principal amount | $	$ 1,000
Repayments of long-term debt | $		$ 283	$ 735
Number of aircrafts financed through repurchased debt | Aircraft		6	24
Number of aircraft financed by debt issuance | Aircraft		30
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Number of pass through trusts issued | trust	3
Debt instrument principal amount | $	$ 1,000
Repayments of long-term debt | $		$ 283	$ 735
Number of aircrafts financed through repurchased debt | Aircraft		6	24
Number of aircraft financed by debt issuance | Aircraft		30

Debt - 2017-2 EETCs - Certain

Debt - 2017-2 EETCs - Certain Information (Details) - Enhanced Equipment Trust Certificates (EETC) [Member]	Sep. 30, 2018USD ($)
2017-2 EETC - Series AA [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 545,000,000
Debt instrument, stated interest rate percentage	3.35%
2017-2 EETC - Series A [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 252,000,000
Debt instrument, stated interest rate percentage	3.60%
2017-2 EETC - Series B [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 221,000,000
Debt instrument, stated interest rate percentage	3.70%
American Airlines, Inc. [Member] | 2017-2 EETC - Series AA [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 545,000,000
Debt instrument, stated interest rate percentage	3.35%
American Airlines, Inc. [Member] | 2017-2 EETC - Series A [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 252,000,000
Debt instrument, stated interest rate percentage	3.60%
American Airlines, Inc. [Member] | 2017-2 EETC - Series B [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 221,000,000
Debt instrument, stated interest rate percentage	3.70%

Debt - 2012-2C(R) EETCs (Detail

Debt - 2012-2C(R) EETCs (Details) - Enhanced Equipment Trust Certificates (EETC) [Member]	Sep. 30, 2018USD ($)	May 15, 2018USD ($)	Jun. 06, 2013USD ($)Aircraft
2012-2 Class C(R) EETC [Member]
Debt Instrument [Line Items]
Debt instrument principal amount	$ 100,000,000	$ 100,000,000
Number of aircraft financed by debt issuance | Aircraft			11
Class C Certificates [Member]
Debt Instrument [Line Items]
Debt instrument principal amount			$ 100,000,000
American Airlines, Inc. [Member] | 2012-2 Class C(R) EETC [Member]
Debt Instrument [Line Items]
Debt instrument principal amount	$ 100,000,000	$ 100,000,000
Number of aircraft financed by debt issuance | Aircraft			11
American Airlines, Inc. [Member] | Class C Certificates [Member]
Debt Instrument [Line Items]
Debt instrument principal amount			$ 100,000,000

Debt - 2012-2C(R) EETCs - Certa

Debt - 2012-2C(R) EETCs - Certain Information (Details) - Enhanced Equipment Trust Certificates (EETC) [Member] - 2012-2C(R) EETC - Series C(R) [Member] - USD ($)	Sep. 30, 2018	May 15, 2018
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 100,000,000	$ 100,000,000
Debt instrument, stated interest rate percentage	4.70%
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal issued	$ 100,000,000	$ 100,000,000
Debt instrument, stated interest rate percentage	4.70%

Debt - Components of Long-Ter_2

Debt - Components of Long-Term Debt - Other Equipment Notes Issued in 2018 (Details) $ in Billions	9 Months Ended
	Sep. 30, 2018USD ($)
Debt Instrument [Line Items]
Proceeds from notes payable	$ 1.3
Secured Debt [Member] | Equipment Loans and Other Notes Payable Issued in 2018 [Member]
Debt Instrument [Line Items]
Average interest rate	4.09%
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Proceeds from notes payable	$ 1.3
American Airlines, Inc. [Member] | Secured Debt [Member] | Equipment Loans and Other Notes Payable Issued in 2018 [Member]
Debt Instrument [Line Items]
Average interest rate	4.09%

Debt - Components of Long-Ter_3

Debt - Components of Long-Term Debt - 2013 Credit Facilities (Details) - Secured Debt [Member] - 2013 Credit Facilities [Member] - Term Loan Facility [Member] - USD ($) $ in Billions	Apr. 30, 2018	May 31, 2018
Debt Instrument [Line Items]
Long-term debt outstanding		$ 1.8
LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%	1.75%
Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%	0.75%
American Airlines, Inc. [Member]
Debt Instrument [Line Items]
Long-term debt outstanding		$ 1.8
American Airlines, Inc. [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%	1.75%
American Airlines, Inc. [Member] | Base Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%	0.75%

Debt - Components of Long-Ter_4

Debt - Components of Long-Term Debt - 2014 Credit Facilities (Details) - Secured Debt [Member] - 2014 Credit Facilities [Member] - Term Loan Facility [Member]	Sep. 30, 2018USD ($)
Line of Credit Facility [Line Items]
Line of credit facility, incremental loan feature	$ 500,000,000
Long-term debt, net	1,200,000,000
American Airlines, Inc. [Member]
Line of Credit Facility [Line Items]
Line of credit facility, incremental loan feature	500,000,000
Long-term debt, net	$ 1,200,000,000

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Tax Credit Carryforward [Line Items]
Income tax provision	$ 115	$ 402	$ 404	$ 1,122
Income tax special items, net	0	0	40	0
Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Change in deferred tax assets valuation allowance			22
Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Alternative minimum tax credit carryforwards					$ 339
Federal [Member]
Tax Credit Carryforward [Line Items]
Gross NOL Carryforwards					10,000
State [Member]
Tax Credit Carryforward [Line Items]
Gross NOL Carryforwards					3,400
Foreign Tax Authority [Member]
Tax Credit Carryforward [Line Items]
Income tax special items, net			18
American Airlines, Inc. [Member]
Tax Credit Carryforward [Line Items]
Income tax provision	133	417	467	1,170
Income tax special items, net	$ 0	$ 0	48	$ 0
American Airlines, Inc. [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Change in deferred tax assets valuation allowance			30
American Airlines, Inc. [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Alternative minimum tax credit carryforwards					452
American Airlines, Inc. [Member] | Federal [Member]
Tax Credit Carryforward [Line Items]
Gross NOL Carryforwards					10,600
American Airlines, Inc. [Member] | State [Member]
Tax Credit Carryforward [Line Items]
Gross NOL Carryforwards					$ 3,200
American Airlines, Inc. [Member] | Foreign Tax Authority [Member]
Tax Credit Carryforward [Line Items]
Income tax special items, net			$ 18

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 4,552	$ 4,771
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	4,552
Restricted cash and short-term investments	154
Long-term investments	211
Total	4,917
Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	68
Recurring [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	1,443
Recurring [Member] | Corporate Obligations [Member] | Maturity Dates Exceeding One Year [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	150
Recurring [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	2,801
Recurring [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member] | Maturity Dates Exceeding One Year [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	942
Recurring [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	240
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	68
Restricted cash and short-term investments	12
Long-term investments	211
Total	291
Recurring [Member] | Level 1 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	68
Recurring [Member] | Level 1 [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Recurring [Member] | Level 1 [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Recurring [Member] | Level 1 [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	4,484
Restricted cash and short-term investments	142
Long-term investments	0
Total	4,626
Recurring [Member] | Level 2 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Recurring [Member] | Level 2 [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	1,443
Recurring [Member] | Level 2 [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	2,801
Recurring [Member] | Level 2 [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	240
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Restricted cash and short-term investments	0
Long-term investments	0
Total	0
Recurring [Member] | Level 3 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Recurring [Member] | Level 3 [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Recurring [Member] | Level 3 [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Recurring [Member] | Level 3 [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	4,542	$ 4,768
American Airlines, Inc. [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	4,542
Restricted cash and short-term investments	154
Long-term investments	211
Total	4,907
American Airlines, Inc. [Member] | Recurring [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	59
American Airlines, Inc. [Member] | Recurring [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	1,443
American Airlines, Inc. [Member] | Recurring [Member] | Corporate Obligations [Member] | Maturity Dates Exceeding One Year [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	150
American Airlines, Inc. [Member] | Recurring [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	2,800
American Airlines, Inc. [Member] | Recurring [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member] | Maturity Dates Exceeding One Year [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	942
American Airlines, Inc. [Member] | Recurring [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	240
American Airlines, Inc. [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	59
Restricted cash and short-term investments	12
Long-term investments	211
Total	282
American Airlines, Inc. [Member] | Recurring [Member] | Level 1 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	59
American Airlines, Inc. [Member] | Recurring [Member] | Level 1 [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 1 [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 1 [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	4,483
Restricted cash and short-term investments	142
Long-term investments	0
Total	4,625
American Airlines, Inc. [Member] | Recurring [Member] | Level 2 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 2 [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	1,443
American Airlines, Inc. [Member] | Recurring [Member] | Level 2 [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	2,800
American Airlines, Inc. [Member] | Recurring [Member] | Level 2 [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	240
American Airlines, Inc. [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
Restricted cash and short-term investments	0
Long-term investments	0
Total	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 3 [Member] | Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 3 [Member] | Corporate Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 3 [Member] | Bank Notes / Certificates of Deposit / Time Deposits [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0
American Airlines, Inc. [Member] | Recurring [Member] | Level 3 [Member] | Repurchase Agreements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 0

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Carrying Value and Estimated Fair Value of Long-Term Debt, Including Current Maturities (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current maturities	$ 24,767	$ 25,065
Fair Value [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current maturities	24,932	25,848
American Airlines, Inc. [Member] | Carrying Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current maturities	23,492	23,294
American Airlines, Inc. [Member] | Fair Value [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current maturities	$ 23,640	$ 24,029

Employee Benefit Plans - Compon

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Income) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 2	$ 2
Interest cost	169	180	507	541
Expected return on assets	(226)	(198)	(678)	(592)
Amortization of:
Prior service cost (benefit)	7	7	21	21
Unrecognized net loss (gain)	36	36	108	108
Net periodic benefit cost (income)	(13)	26	(40)	80
Retiree Medical and Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	3	3
Interest cost	9	10	26	29
Expected return on assets	(6)	(5)	(17)	(16)
Amortization of:
Prior service cost (benefit)	(59)	(59)	(178)	(178)
Unrecognized net loss (gain)	(5)	(6)	(15)	(17)
Net periodic benefit cost (income)	(60)	(59)	(181)	(179)
American Airlines, Inc. [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	0	2	1
Interest cost	168	179	504	538
Expected return on assets	(225)	(197)	(675)	(589)
Amortization of:
Prior service cost (benefit)	7	7	21	21
Unrecognized net loss (gain)	35	36	107	108
Net periodic benefit cost (income)	(14)	25	(41)	79
American Airlines, Inc. [Member] | Retiree Medical and Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	3	3
Interest cost	9	10	26	29
Expected return on assets	(6)	(5)	(17)	(16)
Amortization of:
Prior service cost (benefit)	(59)	(59)	(178)	(178)
Unrecognized net loss (gain)	(5)	(6)	(15)	(17)
Net periodic benefit cost (income)	$ (60)	$ (59)	$ (181)	$ (179)

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Details)	9 Months Ended
	Sep. 30, 2018USD ($)
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 467,000,000
Supplemental contributions by employer	425,000,000
Minimum contributions by employer	42,000,000
American Airlines, Inc. [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	464,000,000
Supplemental contributions by employer	425,000,000
Minimum contributions by employer	$ 39,000,000

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss - Components of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
AOCI tax, attributable to parent [Roll Forward]
Beginning balance, tax			$ (630)
Amounts reclassified from AOCI, tax			15
Net current-period other comprehensive income (loss), tax			15
Ending balance, tax	$ (615)		(615)
AOCI attributable to parent, net of tax [Roll Forward]
Beginning balance, net of tax			(5,154)
Amounts reclassified from AOCI, net of tax	(17)	$ (14)	(49)	$ (43)
Total other comprehensive loss, net of tax			(49)
Ending balance, net of tax	(5,203)		(5,203)
Pension, Retiree Medical and Other Postretirement Benefits [Member]
AOCI attributable to parent, before tax [Roll Forward]
Beginning balance, before tax			(4,523)
Amounts reclassified from AOCI, before tax			(64)
Net current-period other comprehensive income (loss), before tax			(64)
Ending balance, before tax	(4,587)		(4,587)
Unrealized Loss on Investments [Member]
AOCI attributable to parent, before tax [Roll Forward]
Beginning balance, before tax			(1)
Amounts reclassified from AOCI, before tax			0
Net current-period other comprehensive income (loss), before tax			0
Ending balance, before tax	(1)		(1)
American Airlines, Inc. [Member]
AOCI tax, attributable to parent [Roll Forward]
Beginning balance, tax			(742)
Amounts reclassified from AOCI, tax			15
Net current-period other comprehensive income (loss), tax			15
Ending balance, tax	(727)		(727)
AOCI attributable to parent, net of tax [Roll Forward]
Beginning balance, net of tax			(5,251)
Amounts reclassified from AOCI, net of tax	(17)	$ (14)	(50)	$ (43)
Total other comprehensive loss, net of tax			(50)
Ending balance, net of tax	(5,301)		(5,301)
American Airlines, Inc. [Member] | Pension, Retiree Medical and Other Postretirement Benefits [Member]
AOCI attributable to parent, before tax [Roll Forward]
Beginning balance, before tax			(4,508)
Amounts reclassified from AOCI, before tax			(65)
Net current-period other comprehensive income (loss), before tax			(65)
Ending balance, before tax	(4,573)		(4,573)
American Airlines, Inc. [Member] | Unrealized Loss on Investments [Member]
AOCI attributable to parent, before tax [Roll Forward]
Beginning balance, before tax			(1)
Amounts reclassified from AOCI, before tax			0
Net current-period other comprehensive income (loss), before tax			0
Ending balance, before tax	$ (1)		$ (1)

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Loss - Reclassifications out of AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	$ (17)	$ (14)	$ (49)	$ (43)
Prior service benefit [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	(40)	(33)	(121)	(100)
Actuarial loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	23	19	72	57
American Airlines, Inc. [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	(17)	(14)	(50)	(43)
American Airlines, Inc. [Member] | Prior service benefit [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	(40)	(33)	(121)	(100)
American Airlines, Inc. [Member] | Actuarial loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassifications out of AOCI	$ 23	$ 19	$ 71	$ 57

Regional Expenses (Details)

Regional Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Regional Expenses [Line Items]
Aircraft fuel and related taxes	$ 2,234	$ 1,570	$ 6,100	$ 4,481
Salaries, wages and benefits	3,129	3,030	9,240	8,928
Maintenance, materials and repairs	526	487	1,499	1,474
Other rent and landing fees	497	471	1,448	1,363
Aircraft rent	312	304	921	892
Selling expenses	395	400	1,136	1,094
Depreciation and amortization	473	433	1,382	1,255
Special items, net	215	112	563	432
Other	1,296	1,248	3,883	3,652
Total regional expenses	1,833	1,654	5,323	4,848
Regional Carrier [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	506	352	1,369	999
Salaries, wages and benefits	403	369	1,175	1,074
Capacity purchases from third-party regional carriers	363	404	1,081	1,210
Maintenance, materials and repairs	83	74	251	209
Other rent and landing fees	155	159	455	466
Aircraft rent	8	9	25	26
Selling expenses	94	95	276	269
Depreciation and amortization	76	79	241	235
Special items, net	2	(5)	1	(1)
Other	143	118	449	361
Total regional expenses	1,833	1,654	5,323	4,848
American Airlines, Inc. [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	2,234	1,570	6,100	4,481
Salaries, wages and benefits	3,127	3,027	9,231	8,920
Maintenance, materials and repairs	526	487	1,499	1,474
Other rent and landing fees	497	471	1,448	1,363
Aircraft rent	312	304	921	892
Selling expenses	395	400	1,136	1,094
Depreciation and amortization	473	433	1,382	1,255
Special items, net	215	112	563	432
Other	1,298	1,247	3,885	3,652
Total regional expenses	1,810	1,662	5,275	4,860
American Airlines, Inc. [Member] | Regional Carrier [Member]
Regional Expenses [Line Items]
Aircraft fuel and related taxes	506	352	1,369	999
Salaries, wages and benefits	86	85	254	246
Capacity purchases from third-party regional carriers	817	832	2,440	2,460
Maintenance, materials and repairs	1	2	6	5
Other rent and landing fees	148	152	436	449
Aircraft rent	7	7	20	20
Selling expenses	94	95	275	269
Depreciation and amortization	65	66	200	194
Special items, net	0	(1)	0	3
Other	86	72	275	215
Total regional expenses	$ 1,810	$ 1,662	$ 5,275	$ 4,860

Transactions with Related Par_3

Transactions with Related Parties (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Unsecured Debt [Member] | 6.125% Senior Notes [Member]
Related Party Transaction [Line Items]
Debt instrument, stated interest rate percentage	6.125%	4.63%
American Airlines, Inc. [Member]
Related Party Transaction [Line Items]
Net receivables (payables) to related parties	$ 10,525	$ 8,822
American Airlines, Inc. [Member] | AAG [Member]
Related Party Transaction [Line Items]
Net receivables (payables) to related parties	12,655	10,968
American Airlines, Inc. [Member] | AAG's wholly-owned subsidiaries [Member]
Related Party Transaction [Line Items]
Net receivables (payables) to related parties	$ (2,130)	$ (2,146)

Legal Proceedings (Details)

Legal Proceedings (Details) shares in Millions, $ in Millions	Jun. 15, 2018USD ($)	Jun. 30, 2015lawsuit	Sep. 30, 2018shares
Long-term Purchase Commitment [Line Items]
Shares reserved for future issuance (in shares) | shares			24.5
Number of putative class action lawsuits | lawsuit		100
Preliminary settlement amount | $	$ 45
American Airlines, Inc. [Member]
Long-term Purchase Commitment [Line Items]
Number of putative class action lawsuits | lawsuit		100
Preliminary settlement amount | $	$ 45

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 25, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Subsequent Event [Line Items]
Common stock dividends per share declared (in dollars per share)		$ 0.1	$ 0.1	$ 0.3000	$ 0.3
Proceeds from notes payable				$ 1,300
Subsequent Event [Member]
Subsequent Event [Line Items]
Common stock dividends per share declared (in dollars per share)	$ 0.10
Proceeds from notes payable	$ 74
American Airlines, Inc. [Member]
Subsequent Event [Line Items]
Proceeds from notes payable				$ 1,300
American Airlines, Inc. [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from notes payable	$ 74