Condensed Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Statement of Comprehensive Income [Abstract]
Gain (loss) on hedging derivatives, deferred taxes	$ 378	$ (69)	$ (196)
Pension and postretirement liability adjustment, deferred taxes	$ (154)	$ 1,320	$ (25,656)