Condensed Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Condensed Consolidated Statements Of Earnings [Abstract]
Net sales	$ 568,013	$ 624,234	$ 1,761,467	$ 1,805,240
Cost of sales	376,040	400,773	1,154,967	1,165,737
Gross profit	191,973	223,461	606,500	639,503
Operating expenses	126,984	130,727	396,313	382,914
Operating income	64,989	92,734	210,187	256,589
Interest expense	3,914	2,374	11,156	6,987
Other income, net	(4,647)	(3,822)	(11,785)	(10,249)
Earnings before income taxes	65,722	94,182	210,816	259,851
Income taxes	19,350	26,846	58,967	72,583
Net earnings	$ 46,372	$ 67,336	$ 151,849	$ 187,268
Weighted average shares - basic	137,246,854	145,310,710	138,272,093	146,543,727
Weighted average shares - diluted	138,787,914	147,339,425	140,012,046	148,608,748
Net earnings per share - basic	$ 0.34	$ 0.46	$ 1.10	$ 1.28
Net earnings per share - diluted	$ 0.33	$ 0.46	$ 1.08	$ 1.26
Dividends paid per share	$ 0.165	$ 0.140	$ 0.495	$ 0.410