Shareholders' Equity (Schedule Of Total Accumulated Other Comprehensive Income (Loss) And Its Components) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2012	Jul. 31, 2011
Shareholders' Equity [Abstract]
Foreign currency translation adjustment	$ 74,307	$ 131,699
Net gain on hedging derivatives, net of deferred taxes	359	380
Pension and postretirement liability, net of deferred taxes	(88,603)	(92,052)
Total accumulated other comprehensive income (loss)	$ (13,937)	$ 40,027