CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2012	Jan. 31, 2011
Income Statement [Abstract]
Net sales	$ 697,981	$ 645,232	$ 1,403,622	$ 1,250,709
Cost of sales	337,696	312,747	687,081	609,551
Gross profit	360,285	332,485	716,541	641,158
Selling, general and administrative expenses	215,194	197,100	429,090	379,398
Research and development	21,583	20,773	42,521	40,942
Restructuring and other charges, net	5,813	4,789	28,797	6,198
Interest expense, net	5,386	5,814	11,331	13,108
Earnings before income taxes	112,309	104,009	204,802	201,512
Provision for income taxes	27,580	28,345	50,618	54,439
Net earnings	$ 84,729	$ 75,664	$ 154,184	$ 147,073
Earnings per share:
Basic	$ 0.73	$ 0.65	$ 1.33	$ 1.26
Diluted	$ 0.72	$ 0.64	$ 1.31	$ 1.25
Dividends declared per share	$ 0.210	$ 0.175	$ 0.385	$ 0.175
Average shares outstanding:
Basic	116,196	116,476	115,997	116,405
Diluted	117,914	118,266	117,555	118,102