Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Statement of Comprehensive Income [Abstract]
Net earnings	$ 56,433	$ 47,776	$ 47,955	$ 55,947	$ 72,956	$ 67,336	$ 58,340	$ 61,592	$ 208,111	$ 260,224	$ 247,377
Foreign currency translation gain (loss)									(119,094)	(2,122)	17,435
Gain (loss) on hedging derivatives, net of deferred taxes of $378, ($69), and ($196), respectively									(491)	71	120
Pension and postretirement liability adjustment, net of deferred taxes of ($154), $1,320, and $(25,656), respectively									3,405	(6,286)	46,860
Total comprehensive income		$ 46,989	$ 1,786						$ 91,931	$ 251,887	$ 311,792