Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Shares of Common Stock	Common Stock and Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning Balance (in shares) at Jul. 31, 2020		261,740
Beginning Balance at Jul. 31, 2020	$ 5,106		$ 6,182	$ (11,929)	$ (32)	$ 10,885
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	195				(3)	198
Issuance of stock under employee stock plans, net of shares withheld for employee taxes (in shares)		967
Issuance of stock under employee stock plans, net of shares withheld for employee taxes	(11)		(11)
Dividends and dividend rights declared	(157)					(157)
Share-based compensation expense	112		112
Ending Balance (in shares) at Oct. 31, 2020		262,707
Ending Balance at Oct. 31, 2020	5,245		6,283	(11,929)	(35)	10,926
Beginning Balance (in shares) at Jul. 31, 2021		273,235
Beginning Balance at Jul. 31, 2021	9,869		10,548	(12,951)	(24)	12,296
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive income	223				(5)	228
Issuance of stock under employee stock plans, net of shares withheld for employee taxes (in shares)		593
Issuance of stock under employee stock plans, net of shares withheld for employee taxes	$ (111)		(111)
Stock repurchases under stock repurchase programs (in shares)	(606)	(606)
Stock repurchases under stock repurchase programs	$ (338)			(338)
Dividends and dividend rights declared	(191)					(191)
Share-based compensation expense	281		281
Ending Balance (in shares) at Oct. 31, 2021		273,222
Ending Balance at Oct. 31, 2021	$ 9,733		$ 10,718	$ (13,289)	$ (29)	$ 12,333