Condensed Consolidated Statements Of Earnings (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jan. 31, 2013		Jan. 31, 2012		Jan. 31, 2013		Jan. 31, 2012
Condensed Consolidated Statements Of Earnings [Abstract]
Net sales	$ 596,036		$ 580,883		$ 1,184,983		$ 1,189,178
Cost of sales	397,059		380,066		787,713		773,427
Gross margin	198,977		200,817		397,270		415,751
Operating expenses	127,785		126,049		252,541		250,656
Operating income	71,192		74,768		144,729		165,095
Interest expense	2,885		2,899		5,556		6,069
Other income, net	(2,542)		(4,550)		(8,354)		(9,410)
Earnings before income taxes	70,849		76,419		147,527		168,436
Income taxes	20,036		22,598		42,601		46,062
Net earnings	$ 50,813		$ 53,821		$ 104,926		$ 122,374
Weighted average shares - basic	147,951,535		150,105,610		148,531,306		150,309,746
Weighted average shares - diluted	149,988,832		152,825,570		150,742,467		152,961,346
Net earnings per share - basic	$ 0.34	[1]	$ 0.36	[1]	$ 0.71	[1]	$ 0.82	[1]
Net earnings per share - diluted	$ 0.34	[1]	$ 0.35	[1]	$ 0.70	[1]	$ 0.80	[1]
Dividends paid per share	$ 0.090		$ 0.075		$ 0.180		$ 0.150

[1] Prior year shares and per share amounts reflect the impact of the Company's two-for-one stock split that occurred during the third quarter of Fiscal 2012.