Condensed Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Condensed Consolidated Statements Of Earnings [Abstract]
Net sales	$ 596,510	$ 599,384
Cost of sales	387,458	384,990
Gross profit	209,052	214,394
Operating expenses	132,080	122,647
Operating income	76,972	91,747
Other income, net	(3,825)	(1,654)
Interest expense	3,514	2,614
Earnings before income taxes	77,283	90,787
Income taxes	21,336	29,195
Net earnings	$ 55,947	$ 61,592
Weighted average shares - basic	139,581,380	147,323,138
Weighted average shares - diluted	141,480,267	149,360,875
Net earnings per share - basic	$ 0.40	$ 0.42
Net earnings per share - diluted	$ 0.40	$ 0.41
Dividends paid per share	$ 0.165	$ 0.130