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	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Earnings Per Share [Abstract]
Net earnings	$ 83.0	$ 84.4	$ 231.8	$ 202.6
Weighted average common shares outstanding
Weighted average common shares - basic (in shares)	123.4	126.4	123.9	126.6
Dilutive impact of share-based awards (in shares)	1.2	1.9	1.7	1.6
Weighted average common shares - diluted (in shares)	124.6	128.3	125.6	128.2
Net earnings per share - basic (in usd per share)	$ 0.67	$ 0.67	$ 1.87	$ 1.60
Net earnings per share - diluted (in usd per share)	$ 0.67	$ 0.66	$ 1.85	$ 1.58
Options excluded from the diluted net earnings per share calculation (in shares)	1.7	0.0	1.6	0.8