Income Taxes (Schedule Of Tax Years Affecting Uncertain Tax Positions By Major Tax Jurisdictions) (Details)	6 Months Ended
	Jan. 31, 2012
Belgium [Member]
Income Tax Examination [Line Items]
Open Tax Years	2010 through 2011
China [Member]
Income Tax Examination [Line Items]
Open Tax Years	2001 through 2010
France [Member]
Income Tax Examination [Line Items]
Open Tax Years	2009 through 2011
Germany [Member]
Income Tax Examination [Line Items]
Open Tax Years	2009 through 2011
Italy [Member]
Income Tax Examination [Line Items]
Open Tax Years	2003 through 2011
Japan [Member]
Income Tax Examination [Line Items]
Open Tax Years	2009 through 2011
Mexico [Member]
Income Tax Examination [Line Items]
Open Tax Years	2006 through 2010
Thailand [Member]
Income Tax Examination [Line Items]
Open Tax Years	2005 through 2011
United Kingdom [Member]
Income Tax Examination [Line Items]
Open Tax Years	2010 through 2011
United States [Member]
Income Tax Examination [Line Items]
Open Tax Years	2008, 2011