Condensed Consolidated Statements of Comprehensive Income (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net earnings	$ 26.4	$ 35.2
Other comprehensive income (loss), net of tax:
Translation adjustments	0.1	0.9
Adjustment for net periodic pension and other postretirement benefits plans	0.6	0.6
Other comprehensive income, net of tax	0.7	1.5
Comprehensive income	$ 27.1	$ 36.7