CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Income Statement [Abstract]
Net sales	$ 662.0	$ 703.7	$ 1,334.7	$ 1,405.1
Cost of sales	438.8	478.3	880.3	941.3
Gross profit	223.2	225.4	454.4	463.8
Operating expenses	138.7	140.3	281.4	280.0
Operating income	84.5	85.1	173.0	183.8
Interest expense	4.5	5.3	9.0	9.5
Other income, net	(2.8)	(0.7)	(5.5)	(2.6)
Earnings before income taxes	82.8	80.5	169.5	176.9
Income taxes	18.4	20.4	40.0	43.0
Net earnings	$ 64.4	$ 60.1	$ 129.5	$ 133.9
Weighted average shares - basic (in shares)	127.1	128.3	127.0	128.6
Weighted average shares - diluted (in shares)	128.9	130.0	128.8	130.6
Net earnings per share - basic (in usd per share)	$ 0.51	$ 0.47	$ 1.02	$ 1.04
Net earnings per share - diluted (in usd per share)	$ 0.50	$ 0.46	$ 1.01	$ 1.03