Condensed Consolidated Statements Of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Oct. 31, 2018	Oct. 31, 2017
Income Statement [Abstract]
Net sales	$ 701.4	$ 644.8
Cost of sales	463.0	420.5
Gross profit	238.4	224.3
Operating expenses	139.7	135.2
Operating income	98.7	89.1
Interest expense	4.2	5.2
Other income, net	(1.9)	(0.8)
Earnings before income taxes	96.4	84.7
Income taxes	22.6	23.8
Net earnings	$ 73.8	$ 60.9
Weighted average shares - basic (in shares)	128.8	130.8
Weighted average shares - diluted (in shares)	131.0	132.7
Net (loss) earnings per share - basic (in usd per share)	$ 0.57	$ 0.47
Net (loss) earnings per share - diluted (in usd per share)	0.56	0.46
Cash dividends paid (in usd per share)	$ 0.19	$ 0.18