Shareholders' Equity (Schedule Of Total Comprehensive Income And Its Components) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Shareholders' Equity [Abstract]
Net earnings	$ 68,553	$ 53,134
Foreign currency translation gain (loss)	(33,938)	35,772
Net gain (loss) on hedging derivatives, net of deferred taxes	418	(255)
Pension and postretirement liability adjustment, net of deferred taxes	(15,249)	(141)
Total comprehensive income	$ 19,784	$ 88,510