Condensed Consolidated Statements of Cash Flows - American Airlines Group Inc. - USD ($) $ in Millions	3 Months Ended				12 Months Ended
	Mar. 31, 2026		Mar. 31, 2025		Dec. 31, 2025
Statement of Cash Flows [Abstract]
Net cash provided by operating activities	$ 4,223		$ 2,456
Cash flows from investing activities:
Capital expenditures and aircraft purchase deposits	(811)		(824)
Purchases of short-term investments	(2,773)		(1,806)
Sales of short-term investments	1,263		1,349
Decrease in restricted short-term investments	15		85
Other investing activities	(22)		(8)
Net cash used in investing activities	(2,328)		(1,204)
Cash flows from financing activities:
Payments on long-term debt and finance leases	(2,324)		(1,362)
Proceeds from issuance of long-term debt	997		325
Net payments on fuel financing	(554)		(74)
Other financing activities	(68)		(112)
Net cash used in financing activities	(1,949)		(1,223)
Net increase (decrease) in cash and restricted cash	(54)		29
Cash and restricted cash at beginning of period	1,056		902		$ 902
Cash and restricted cash at end of period	1,002	[1]	931	[1]	$ 1,056
Non-cash transactions:
Right-of-use (ROU) assets acquired through operating leases	124		350
Property and equipment acquired through finance leases and other	154		73
Finance leases converted to operating leases	39		45
Supplemental information:
Interest paid, net	$ 454		$ 524

[1] The following table provides a reconciliation of cash and restricted cash to amounts reported within the condensed consolidated balance sheets: Cash$903 $835 Restricted cash included in restricted cash and short-term investments99 96 Total cash and restricted cash$1,002 $931