Condensed Consolidated Statements Of Earnings - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2017	Jan. 31, 2016
Income Statement [Abstract]
Net sales	$ 550.6	$ 517.2	$ 1,103.6	$ 1,055.2
Cost of sales	362.7	346.4	721.5	706.3
Gross profit	187.9	170.8	382.1	348.9
Operating expenses	118.5	117.1	236.3	239.7
Operating income	69.4	53.7	145.8	109.2
Other income, net	(1.7)	(1.2)	(9.8)	(4.1)
Interest expense	4.8	5.5	9.6	10.5
Earnings before income taxes	66.3	49.4	146.0	102.8
Income taxes	19.8	11.4	41.5	26.3
Net earnings	$ 46.5	$ 38.0	$ 104.5	$ 76.5
Weighted average share - basic (in shares)	132.9	133.7	133.2	133.8
Weighted average shares - diluted (in shares)	134.4	134.4	134.5	134.7
Net earnings per share - basic (in usd per share)	$ 0.35	$ 0.28	$ 0.78	$ 0.57
Net earnings per share - diluted (in usd per share)	0.35	0.28	0.78	0.57
Dividends paid per share (in usd per share)	$ 0.175	$ 0.170	$ 0.350	$ 0.340