Income Taxes (Components Of The Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Income Taxes [Abstract]
Federal, Current	$ 45,468	$ 26,675	$ 25,455
State, Current	4,012	3,555	2,206
Foreign, Current	50,655	54,785	33,327
Income taxes, Current	100,135	85,015	60,988
Federal, Deferred	7,391	8,556	3,860
State, Deferred	722	191	20
Foreign, Deferred	(1,769)	(6,790)	(855)
Income taxes, Deferred	6,344	1,957	3,025
Total	$ 106,479	$ 86,972	$ 64,013