Condensed Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Millions	Total	American Airlines, Inc. [Member]	Common Stock [Member]	Common Stock [Member] American Airlines, Inc. [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] American Airlines, Inc. [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member] American Airlines, Inc. [Member]	Retained Earnings (Deficit) [Member]	Retained Earnings (Deficit) [Member] American Airlines, Inc. [Member]
Beginning Balance at Dec. 31, 2018	$ (169)	$ 11,770	$ 5	$ 0	$ 4,964	$ 16,802	$ (5,896)	$ (5,992)	$ 758	$ 960
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	185	230							185	230
Other comprehensive loss, net	(13)	(13)					(13)	(13)
Purchase and retirement of AAG common stock	(610)				(610)
Dividends declared on AAG common stock	(46)								(46)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(8)				(8)
Share-based compensation expense	25	25			25	25
Ending Balance at Mar. 31, 2019	(636)	12,012	5	0	4,371	16,827	(5,909)	(6,005)	897	1,190
Beginning Balance at Dec. 31, 2018	(169)	11,770	5	0	4,964	16,802	(5,896)	(5,992)	758	960
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	847	944
Other comprehensive loss, net	(31)	(31)
Ending Balance at Jun. 30, 2019	(22)	12,740	5	0	4,386	16,859	(5,927)	(6,023)	1,514	1,904
Beginning Balance at Mar. 31, 2019	(636)	12,012	5	0	4,371	16,827	(5,909)	(6,005)	897	1,190
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	662	714							662	714
Other comprehensive loss, net	(18)	(18)					(18)	(18)
Dividends declared on AAG common stock	(45)								(45)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(17)				(17)
Settlement of single-dip unsecured claims held in Disputed Claims Reserve	7				7
Share-based compensation expense	25	25			25	25
Intercompany equity transfer		7				7
Ending Balance at Jun. 30, 2019	(22)	12,740	5	0	4,386	16,859	(5,927)	(6,023)	1,514	1,904
Beginning Balance at Dec. 31, 2019	(118)	13,422	4	0	3,945	16,903	(6,331)	(6,423)	2,264	2,942
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,241)	(2,169)							(2,241)	(2,169)
Other comprehensive loss, net	(149)	(149)					(149)	(149)
Purchase and retirement of AAG common stock	(145)				(145)
Dividends declared on AAG common stock	(44)								(44)
Issuance of shares of AAG common stock pursuant to employee stock plans net of shares withheld for cash taxes	(13)				(13)
Settlement of single-dip unsecured claims held in Disputed Claims Reserve	56				56
Share-based compensation expense	18	18			18	18
Intercompany equity transfer		56				56
Ending Balance at Mar. 31, 2020	(2,636)	11,178	4	0	3,861	16,977	(6,480)	(6,572)	(21)	773
Beginning Balance at Dec. 31, 2019	(118)	13,422	4	0	3,945	16,903	(6,331)	(6,423)	2,264	2,942
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(4,308)	(4,137)
Other comprehensive loss, net	(132)	(132)
Purchase and retirement of AAG common stock	(145)
Issuance of AAG common stock pursuant to a public stock offering	1,100
Ending Balance at Jun. 30, 2020	(3,169)	9,258	5	0	5,377	17,008	(6,463)	(6,555)	(2,088)	(1,195)
Beginning Balance at Mar. 31, 2020	(2,636)	11,178	4	0	3,861	16,977	(6,480)	(6,572)	(21)	773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(2,067)	(1,968)							(2,067)	(1,968)
Other comprehensive loss, net	17	17					17	17
Settlement of single-dip unsecured claims held in Disputed Claims Reserve	(2)				(2)
Payroll Support Program Warrants	55				55
Equity component of convertible debt issued, net of tax and offering costs	320				320
Issuance of AAG common stock pursuant to a public stock offering	1,113		1		1,112
Share-based compensation expense	31	31			31	31
Ending Balance at Jun. 30, 2020	$ (3,169)	$ 9,258	$ 5	$ 0	$ 5,377	$ 17,008	$ (6,463)	$ (6,555)	$ (2,088)	$ (1,195)