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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement of Comprehensive Income [Abstract]      
Net income (loss) $ 33.9 $ (63.7) $ 25.7
Other comprehensive income (loss), net of income taxes:      
Change in unfunded pension plan obligation liability 2.3 1.2 (0.2)
Other 0.0 0.1 0.1
Comprehensive income (loss) $ 36.3 $ (62.4) $ 25.6