Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 59.5	$ 54.8	$ 38.0	$ 38.5	$ 56.4	$ 47.8	$ 48.0	$ 55.9	$ 190.8	$ 208.1	$ 260.2
Foreign currency translation loss									(18.5)	(119.1)	(2.1)
Pension and postretirement liability adjustment, net of deferred taxes of $14.4, $(0.2) and $1.3, respectively									(25.2)	3.4	(6.3)
Gain (loss) on hedging derivatives, net of deferred taxes of $(0.1), $0.4 and $(0.1), respectively									0.1	(0.5)	0.1
Net other comprehensive loss									(43.6)	(116.2)	(8.3)
Total comprehensive income									$ 147.2	$ 91.9	$ 251.9