Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Condensed Consolidated Statements Of Comprehensive Income [Abstract]
Net earnings	$ 55,947	$ 61,592
Foreign currency translation gain (loss)	(42,825)	13,194
Net gain (loss) on hedging derivatives, net of deferred taxes of $(563) and $100, respectively	1,036	(172)
Pension and postretirement liability adjustment, net of deferred taxes of $1,346 and $1,619, respectively	4,890	3,226
Total comprehensive income	$ 19,048	$ 77,840