Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Consolidated Statements Of Comprehensive Income [Abstract]
Net earnings	$ 72,609	$ 69,842	$ 50,813	$ 54,113	$ 70,981	$ 70,946	$ 53,821	$ 68,553	$ 247,377	$ 264,301	$ 225,291
Foreign currency translation gain (loss)									17,435	(98,723)	72,505
Gain (loss) on hedging derivatives, net of deferred taxes of ($196), ($256), and ($280), respectively									120	(672)	842
Pension and postretirement liability adjustment, net of deferred taxes of ($25,656), $23,527, and ($4,021), respectively									46,860	(42,520)	7,166
Total comprehensive income									$ 311,792	$ 122,386	$ 305,804