CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ 60.1	$ (52.9)	$ 133.9	$ 8.0
Other comprehensive (loss) income:
Foreign currency translation income (loss)	23.7	55.5	(0.5)	50.4
Pension liability adjustment, net of deferred taxes of $(0.2), $(0.4), $(0.6) and $(0.9), respectively	0.5	0.2	2.1	1.0
Gain (loss) on hedging derivatives, net of deferred taxes of $0.0, $0.3, $(0.2) and $(0.9), respectively	0.0		0.5
Gain (loss) on hedging derivatives, net of deferred taxes of $0.0, $0.3, $(0.2) and $(0.9), respectively		(0.6)		1.7
Comprehensive income	$ 84.3	$ 2.2	$ 136.0	$ 61.1