Consolidated Statements of Earnings - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2016
Income Statement [Abstract]
Net sales	$ 2,734.2	$ 2,371.9	$ 2,220.3
Cost of sales	1,798.7	1,548.8	1,465.5
Gross profit	935.5	823.1	754.8
Selling, general and administrative	495.6	439.8	425.1
Research and development	59.9	54.7	55.5
Operating income	380.0	328.6	274.2
Other income, net	21.3	19.5	20.7
Interest expense	(4.9)	(12.9)	(3.9)
Earnings before income taxes	363.6	322.0	257.4
Income taxes	183.3	89.2	66.6
Net earnings	$ 180.3	$ 232.8	$ 190.8
Weighted average shares – basic (in shares)	130.3	132.6	133.8
Weighted average shares – diluted (in shares)	132.2	134.1	134.8
Net earnings per share – basic (in dollars per share)	$ 1.38	$ 1.76	$ 1.43
Net earnings per share – diluted (in dollars per share)	1.36	1.74	1.42
Dividends paid per share (in dollars per share)	$ 0.730	$ 0.700	$ 0.685