CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Income Statement [Abstract]
Net sales	$ 629.7	$ 712.8	$ 1,964.4	$ 2,117.9
Cost of sales	420.5	472.1	1,300.7	1,413.4
Gross profit	209.2	240.7	663.7	704.5
Operating expenses	124.7	140.7	406.1	420.7
Operating income	84.5	100.0	257.6	283.8
Interest expense	4.4	5.2	13.5	14.7
Other income, net	(4.3)	(4.7)	(9.8)	(7.3)
Earnings before income taxes	84.4	99.5	253.9	276.4
Income taxes	21.0	24.3	61.0	67.3
Net earnings	$ 63.4	$ 75.2	$ 192.9	$ 209.1
Weighted average shares - basic (in shares)	126.9	128.2	127.0	128.5
Weighted average shares - diluted (in shares)	127.7	130.0	128.5	130.4
Net earnings per share - basic (in usd per share)	$ 0.50	$ 0.59	$ 1.52	$ 1.63
Net earnings per share - diluted (in usd per share)	$ 0.50	$ 0.58	$ 1.50	$ 1.60