Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Consolidated Statements Of Earnings [Abstract]
Net sales	$ 2,473,466	$ 2,436,948	$ 2,493,248
Cost of sales	1,595,640	1,589,821	1,619,485
Gross profit	877,826	847,127	873,763
Selling, general, and administrative	460,250	441,168	451,158
Research and development	61,837	62,630	59,589
Operating income	355,739	343,329	363,016
Other income, net	(15,164)	(15,762)	(19,253)
Interest expense	10,200	10,910	11,489
Earnings before income taxes	360,703	348,181	370,780
Income taxes	100,479	100,804	106,479
Net earnings	$ 260,224	$ 247,377	$ 264,301
Weighted average shares - basic	145,594,300	148,273,904	150,286,403
Weighted average shares - diluted	147,641,113	150,455,193	152,940,605
Net earnings per share - basic	$ 1.79	$ 1.67	$ 1.76
Net earnings per share - diluted	$ 1.76	$ 1.64	$ 1.73