Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 24.8	$ 42.3
Other comprehensive income (loss)
Pension and other postretirement benefit plans activity, net of income taxes	2.5	(1.0)
Foreign currency translation adjustment	(6.2)	8.1
Total other comprehensive income (loss)	(3.7)	7.1
Comprehensive income	$ 21.1	$ 49.4