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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 25.7	$ 18.1	$ (40.2)
Other comprehensive income (loss), net of income taxes
Change in unfunded pension plan obligation liability	(0.2)	6.5	(1.6)
Other	0.1	0.2	0.1
Comprehensive income (loss)	$ 25.6	$ 24.8	$ (41.7)

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