Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 40	$ 228
Other comprehensive income (loss), net of income taxes:
Unrealized loss on available-for-sale debt securities	(6)	(4)
Foreign currency translation loss	(21)	(1)
Total other comprehensive loss, net	(27)	(5)
Comprehensive income	$ 13	$ 223