CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Comprehensive (loss) income:
Net (loss) income	$ (38.6)	$ 17.7
Other comprehensive (loss) income before income tax effect:
Net (loss) income on foreign currency cash flow hedges reclassified as income	(0.1)	0.0
Defined benefit plans and other postretirement benefits:
Amortization of prior service benefit during the period	(0.0)	(0.4)
Amortization of net gain during the period	1.2	1.1
Other comprehensive income before income tax effect	1.1	0.7
Income tax effect	0.0	(0.1)
Other comprehensive income	1.1	0.6
Total comprehensive (loss) income	$ (37.5)	$ 18.3