Income taxes - provision for income taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2022
Current provision
Federal	$ 91	$ 242	$ 39
State	52	(13)	37
Non–U.S.	185	283	260
Total current provisions for income taxes	328	512	336
Deferred provision
Federal	910	(1,886)	(78)
State	259	(364)	(20)
Non–U.S.	(251)	(120)	(268)
Total non-current provisions for income taxes	918	(2,370)	(366)
Income tax provision (benefit)	$ 1,246	$ (1,858)	$ (30)