Earnings Per Share (Information Necessary to Calculate Basic and Diluted Net Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Earnings Per Share [Abstract]
Net earnings	$ 358.8	$ 332.8	$ 286.9
Weighted average common shares outstanding
Weighted average common shares – basic (in shares)	121.8	123.7	126.4
Dilutive impact of share-based awards (in shares)	1.8	1.5	1.8
Weighted average common shares – diluted (in shares)	123.6	125.2	128.2
Net EPS – basic (in usd per share)	$ 2.95	$ 2.69	$ 2.27
Net EPS– diluted (in usd per share)	$ 2.90	$ 2.66	$ 2.24
Stock options excluded from net EPS calculation (in shares)	0.0	1.6	0.8