Condensed Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Condensed Consolidated Statements Of Earnings [Abstract]
Net sales	$ 624,234	$ 619,371	$ 1,805,240	$ 1,804,354
Cost of sales	400,773	397,870	1,165,737	1,185,583
Gross profit	223,461	221,501	639,503	618,771
Operating expenses	130,727	122,914	382,914	375,455
Operating income	92,734	98,587	256,589	243,316
Interest expense	2,374	2,719	6,987	8,275
Other income, net	(3,822)	(3,608)	(10,249)	(11,962)
Earnings before income taxes	94,182	99,476	259,851	247,003
Income taxes	26,846	29,634	72,583	72,235
Net earnings	$ 67,336	$ 69,842	$ 187,268	$ 174,768
Weighted average shares - basic	145,310,710	148,136,620	146,543,727	148,404,503
Weighted average shares - diluted	147,339,425	150,234,445	148,608,748	150,591,003
Net earnings per share - basic	$ 0.46	$ 0.47	$ 1.28	$ 1.18
Net earnings per share - diluted	$ 0.46	$ 0.46	$ 1.26	$ 1.16
Dividends paid per share	$ 0.14	$ 0.10	$ 0.41	$ 0.28