Description of Business and Summary of Significant Accounting Policies - Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Accounting Policies [Abstract]
Net income	$ 241	$ 40
Shares used in basic per share amounts:
Weighted-average common shares outstanding (in shares)	280	281
Shares used in diluted per share amounts:
Weighted-average common shares outstanding (in shares)	280	281
Dilutive common equivalent shares from stock options and restricted stock awards (in shares)	3	3
Dilutive weighted-average common shares outstanding (in shares)	283	284
Basic and diluted net income per share:
Basic net income per share (in dollars per share)	$ 0.86	$ 0.14
Diluted net income per share (in dollars per share)	$ 0.85	$ 0.14
Shares excluded from diluted net income per share:
Weighted-average stock options and restricted stock units that have been excluded from dilutive common equivalent shares outstanding due to their anti-dilutive effect (in shares)	1	3