Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 168	$ 100	$ 208	$ 328
Other comprehensive income (loss), net of income taxes:
Unrealized gain (loss) on available-for-sale debt securities	6	(1)	0	(5)
Foreign currency translation gain (loss)	18	(4)	(3)	(5)
Total other comprehensive income (loss), net	24	(5)	(3)	(10)
Comprehensive income	$ 192	$ 95	$ 205	$ 318