Condensed Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Condensed Consolidated Statements Of Earnings [Abstract]
Net sales	$ 599,384	$ 588,947
Cost of sales	384,990	390,654
Gross profit	214,394	198,293
Operating expenses	122,647	124,756
Operating income, net	91,747	73,537
Interest expense	2,614	2,671
Other income, net	(1,654)	(5,812)
Earnings before income taxes	90,787	76,678
Income taxes	29,195	22,565
Net earnings	$ 61,592	$ 54,113
Weighted average shares - basic	147,323,138	149,149,429
Weighted average shares - diluted	149,360,875	151,524,125
Net earnings per share - basic	$ 0.42	$ 0.36
Net earnings per share - diluted	$ 0.41	$ 0.36
Dividends paid per share	$ 0.13	$ 0.09