Condensed Consolidated Statements Of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Income Statement [Abstract]
Net sales	$ 700.0	$ 608.2	$ 2,009.5	$ 1,711.8
Cost of sales	460.4	396.7	1,326.7	1,118.2
Gross profit	239.6	211.5	682.8	593.6
Operating expenses	138.7	123.0	409.6	359.3
Operating income	100.9	88.5	273.2	234.3
Interest expense	5.4	4.8	15.7	14.4
Other income, net	(3.5)	(0.6)	(2.6)	(10.4)
Earnings before income taxes	99.0	84.3	260.1	230.3
Income taxes	29.1	24.2	182.2	65.7
Net earnings	$ 69.9	$ 60.1	$ 77.9	$ 164.6
Weighted average shares - basic (in shares)	130.1	132.5	130.5	133.0
Weighted average shares - diluted (in shares)	131.9	134.1	132.5	134.4
Net (loss) earnings per share - basic (in usd per share)	$ 0.54	$ 0.45	$ 0.60	$ 1.24
Net (loss) earnings per share - diluted (in usd per share)	0.53	0.45	0.59	1.23
Cash dividends paid (in usd per share)	$ 0.18	$ 0.175	$ 0.54	$ 0.525