Condensed Consolidated Statements Of Earnings - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Statement [Abstract]
Net sales	$ 2,371,213	$ 2,473,466	$ 2,436,948
Cost of sales	1,562,629	1,595,640	1,589,821
Gross profit	808,584	877,826	847,127
Selling, general, and administrative	460,045	460,250	441,168
Research and development	60,229	61,837	62,630
Operating income	288,310	355,739	343,329
Other income, net	(15,450)	(15,164)	(15,762)
Interest expense	15,157	10,200	10,910
Earnings before income taxes	288,603	360,703	348,181
Income taxes	80,492	100,479	100,804
Net earnings	$ 208,111	$ 260,224	$ 247,377
Weighted average shares - basic	137,750,158	145,594,300	148,273,904
Weighted average shares - diluted	139,381,940	147,641,113	150,455,193
Net earnings per share - basic	$ 1.51	$ 1.79	$ 1.67
Net earnings per share - diluted	$ 1.49	$ 1.76	$ 1.64