Condensed Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013
Condensed Consolidated Statements Of Earnings [Abstract]
Net sales	$ 581,622	$ 596,036	$ 1,181,006	$ 1,184,983
Cost of sales	379,974	397,059	764,964	787,713
Gross profit	201,648	198,977	416,042	397,270
Operating expenses	129,540	127,785	252,187	252,541
Operating income, net	72,108	71,192	163,855	144,729
Interest expense	1,999	2,885	4,613	5,556
Other income, net	(4,773)	(2,542)	(6,427)	(8,354)
Earnings before income taxes	74,882	70,849	165,669	147,527
Income taxes	16,542	20,036	45,737	42,601
Net earnings	$ 58,340	$ 50,813	$ 119,932	$ 104,926
Weighted average shares - basic	146,957,131	147,951,535	147,140,135	148,531,306
Weighted average shares - diluted	149,021,755	149,988,832	149,204,090	150,742,467
Net earnings per share - basic	$ 0.40	$ 0.34	$ 0.82	$ 0.71
Net earnings per share - diluted	$ 0.39	$ 0.34	$ 0.80	$ 0.70
Dividends paid per share	$ 0.14	$ 0.09	$ 0.27	$ 0.18