Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Net cash provided by (used in) operating activities		$ (1,076)	$ 2,387
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits		(1,233)	(2,323)
Proceeds from sale-leaseback transactions		376	518
Proceeds from sale of property and equipment		148	19
Purchases of short-term investments		(7,936)	(2,201)
Sales of short-term investments		2,131	1,611
Increase in restricted short-term investments		(386)	(2)
Other investing activities		(61)	(35)
Net cash used in investing activities		(6,961)	(2,413)
Cash flows from financing activities:
Proceeds from issuance of long-term debt		9,464	2,589
Payments on long-term debt and finance leases		(2,477)	(1,781)
Proceeds from issuance of equity		1,527	0
Deferred financing costs		(84)	(23)
Treasury stock repurchases		(173)	(625)
Dividend payments		(43)	(90)
Net cash provided by financing activities		8,214	70
Net increase in cash and restricted cash		177	44
Cash and restricted cash at beginning of period		290	286
Cash and restricted cash at end of period	[1]	467	330
Non-cash transactions:
Right-of-use (ROU) assets acquired through operating leases		421	708
Settlement of bankruptcy obligations		56	7
Payroll Support Program Warrants		55	0
Deferred financing costs paid through issuance of debt		17	0
Property and equipment acquired through finance leases		0	4
Supplemental information:
Interest paid, net		501	559
Income taxes paid		2	4
American Airlines, Inc. [Member]
Net cash provided by (used in) operating activities		2,295	2,335
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits		(1,208)	(2,255)
Proceeds from sale-leaseback transactions		376	518
Proceeds from sale of property and equipment		148	19
Purchases of short-term investments		(7,936)	(2,190)
Sales of short-term investments		2,131	1,611
Increase in restricted short-term investments		(386)	(2)
Other investing activities		(62)	(35)
Net cash used in investing activities		(6,937)	(2,334)
Cash flows from financing activities:
Proceeds from issuance of long-term debt		6,868	1,839
Payments on long-term debt and finance leases		(1,971)	(1,781)
Deferred financing costs		(75)	(13)
Net cash provided by financing activities		4,822	45
Net increase in cash and restricted cash		180	46
Cash and restricted cash at beginning of period		277	276
Cash and restricted cash at end of period	[2]	457	322
Non-cash transactions:
Right-of-use (ROU) assets acquired through operating leases		412	708
Settlement of bankruptcy obligations		56	7
Deferred financing costs paid through issuance of debt		17	0
Property and equipment acquired through finance leases		0	4
Supplemental information:
Interest paid, net		469	526
Income taxes paid		$ 2	$ 4

[1] The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets: Cash $ 462
  $ 319
Restricted cash included in restricted cash and short-term investments 5
  11
Total cash and restricted cash $ 467
  $ 330

[2] The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets: Cash $ 452
  $ 311
Restricted cash included in restricted cash and short-term investments 5
  11
Total cash and restricted cash $ 457
  $ 322