Summary Of Significant Accounting Policies (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Summary Of Significant Accounting Policies [Abstract]
Foreign currency translation adjustment	$ 32,976	$ 131,699	$ 59,194
Net gain (loss) on cash flow hedging dervatives, net of deferred taxes	(292)	380	(462)
Pension and postretirement liability, net of deferred taxes	(134,572)	(92,052)	(99,218)
Total accumulated other comprehensive income (loss)	$ (101,888)	$ 40,027	$ (40,486)