Consolidated Statements Of Earnings (USD $) In Thousands, except Share data	12 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2009
Consolidated Statements Of Earnings
Net sales	$ 2,294,029	$ 1,877,064	$ 1,868,629
Cost of sales	1,480,233	1,218,316	1,278,923
Gross margin	813,796	658,748	589,706
Selling, general and administrative	443,227	376,018	379,108
Research and development	55,286	44,486	40,643
Operating income	315,283	238,244	169,955
Interest expense	12,525	11,975	17,018
Other income, net	(9,505)	(3,907)	(8,488)
Earnings before income taxes	312,263	230,176	161,425
Income taxes	86,972	64,013	29,518
Net earnings	$ 225,291	$ 166,163	$ 131,907
Weighted average shares - basic	77,196,370	77,848,528	77,967,141
Weighted average shares - diluted	78,598,459	79,177,772	79,199,838
Net earnings per share - basic	$ 2.92	$ 2.13	$ 1.69
Net earnings per share - diluted	$ 2.87	$ 2.10	$ 1.67