CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ 112.9	$ 63.9	$ 87.1
Other comprehensive income (loss), net of tax:
Currency translation	(7.0)	13.4	(1.8)
Total other comprehensive income (loss), net	44.1	0.6	(24.5)
Comprehensive income	157.0	64.5	62.6
Defined Benefit Pension Plans
Other comprehensive income (loss), net of tax:
Defined benefit plans	51.2	(12.3)	(22.2)
OPEB
Other comprehensive income (loss), net of tax:
Defined benefit plans	$ (0.1)	$ (0.5)	$ (0.5)