Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Jul. 28, 2023	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Stockholders' Equity Note [Abstract]
Number of shares authorized to be repurchased (in shares)		13,000,000
Stock repurchases		2,500,000	2,900,000
Purchase of treasury stock		$ (141.8)	$ (170.6)	$ (142.2)
Remaining number of shares authorized to be repurchased (in shares)		2,900,000
Dividends paid per share (in usd per share)		$ 0.94	$ 0.89
Cash dividend declared per common share (in usd per share)	$ 0.25	$ 0.96	$ 0.90	$ 0.86