Income Taxes (Schedule Of Uncertain Tax Positions By Major Tax Jurisdictions) (Details)	12 Months Ended
	Jul. 31, 2011
Belgium [Member]
Open Tax Years	2010
China [Member]
Open Tax Years	2001 through 2010
France [Member]
Open Tax Years	2008 through 2010
Germany [Member]
Open Tax Years	2009 through 2010
Italy [Member]
Open Tax Years	2003 through 2010
Japan [Member]
Open Tax Years	2009 through 2010
Mexico [Member]
Open Tax Years	2006 through 2010
Thailand [Member]
Open Tax Years	2005 through 2010
United Kingdom [Member]
Open Tax Years	2010
United States [Member]
Open Tax Years	2008 through 2010