Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net earnings	$ 10.1	$ 49.9	$ 66.0	$ 126.6
Other comprehensive income (loss), net:
Foreign currency translation adjustments	11.4	(6.1)	2.8	(16.1)
Pension and post-retirement liability adjustment, net of taxes of $(0.1) and $(0.1) for the three months ended December 31, 2019 and 2018, respectively; and $(0.2) and $(0.1) for the six months ended December 31, 2019 and 2018, respectively	0.4	0.4	0.7	0.4
Total other comprehensive income (loss), net	11.8	(5.7)	3.5	(15.7)
Comprehensive income	$ 21.9	$ 44.2	$ 69.5	$ 110.9