Condensed Consolidated Statements Of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Income Statement [Abstract]
Net sales	$ 2,220.3	$ 2,371.2	$ 2,473.5
Cost of sales	1,465.5	1,562.6	1,595.7
Gross profit	754.8	808.6	877.8
Selling, general and administrative	425.1	460.1	460.3
Research and development	55.5	60.2	61.8
Operating income	274.2	288.3	355.7
Other income, net	(3.9)	(15.5)	(15.2)
Interest expense	20.7	15.2	10.2
Earnings before income taxes	257.4	288.6	360.7
Earnings before income taxes	66.6	80.5	100.5
Net earnings	$ 190.8	$ 208.1	$ 260.2
Weighted average common shares – basic (in shares)	133.8	137.8	145.6
Weighted average common shares – diluted (in shares)	134.8	139.4	147.6
Net earnings per share – basic (in dollars per share)	$ 1.43	$ 1.51	$ 1.79
Net earnings per share – diluted (in dollars per share)	1.42	1.49	1.76
Dividends declared per share (in dollars per share)	$ 0.690	$ 0.670	$ 0.610