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, 2022	Jul. 31, 2021	Jul. 31, 2020
Earnings Per Share [Abstract]
Net earnings	$ 332.8	$ 286.9	$ 257.0
Weighted average common shares outstanding
Weighted average common shares – basic (in shares)	123.7	126.4	126.9
Dilutive impact of share-based awards (in shares)	1.5	1.8	1.4
Weighted average common shares – diluted (in shares)	125.2	128.2	128.3
Net EPS – basic (in dollars per share)	$ 2.69	$ 2.27	$ 2.03
Net EPS– diluted (in dollars per share)	$ 2.66	$ 2.24	$ 2.00
Stock options excluded from net EPS calculation (in shares)	1.6	0.8	1.7