Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net earnings	$ 61,592	$ 54,113
Foreign currency translation gain	13,194	25,852
Net loss on hedging derivatives, net of deferred taxes of $100 and $109, respectively	(172)	(293)
Pension and postretirement liability adjustment, net of deferred taxes of $1,619 and $4,339, respectively	3,226	7,595
Total comprehensive income	$ 77,840	$ 87,267