Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 2,087	$ 1,794	$ 2,295	$ 2,122
Other comprehensive income (loss), net of income taxes:
Unrealized gain (loss) on available-for-sale debt securities	1	(5)	1	(10)
Foreign currency translation gain (loss)	1	(14)	(2)	(19)
Total other comprehensive income (loss), net	2	(19)	(1)	(29)
Comprehensive income	$ 2,089	$ 1,775	$ 2,294	$ 2,093