Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 11.0	$ (19.1)	$ 46.6
Other comprehensive income (loss), net of income tax:
Unrealized gains (losses) on derivatives, net of income tax			0.3
Employee pension and postretirement benefit income (expense), net of income tax	15.6	(8.0)	(3.7)
Foreign currency translation adjustments	(20.5)	31.5	(1.0)
Total other comprehensive income (loss), net of income tax	(4.9)	23.5	(4.4)
Comprehensive income	$ 6.1	$ 4.4	$ 42.2