Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Consolidated Statements Of Comprehensive Income [Abstract]
Net earnings	$ 72,956	$ 67,336	$ 58,340	$ 61,592	$ 72,609	$ 69,842	$ 50,813	$ 54,113	$ 260,224	$ 247,377	$ 264,301
Foreign currency translation gain (loss)									(2,122)	17,435	(98,723)
Gain (loss) on hedging derivatives, net of deferred taxes of $(69), ($196), and $117, respectively									71	120	(672)
Pension and postretirement liability adjustment, net of deferred taxes of $1,319, ($25,656), and $23,527, respectively									(6,286)	46,860	(42,520)
Total comprehensive income									$ 251,887	$ 311,792	$ 122,386