Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 2,066	$ 2,062	$ 1,826
Other comprehensive income (loss), net of income taxes:
Unrealized gain (loss) on available-for-sale debt securities	(10)	(3)	5
Foreign currency translation gain (loss)	(26)	11	(1)
Total other comprehensive income (loss), net	(36)	8	4
Comprehensive income	$ 2,030	$ 2,070	$ 1,830