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Earnings (Loss) Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Numerator        
Net income (loss) $ (17.4) $ 26.5 $ (14.5) $ 50.4
Less: Net income attributable to participating securities 0.0 (1.1) 0.0 (2.0)
Net income (loss) attributable to common shareholders - Basic and Dilutive $ (17.4) $ 25.4 $ (14.5) $ 48.4
Denominators        
Basic - Weighted-average shares outstanding 120.5 119.6 120.3 119.3
Basic - Less: Weighted-average participating securities (3.4) (5.0) (3.8) (4.9)
Basic - Weighted-average common shares outstanding 117.1 114.6 116.5 114.4
Effect of dilutive securities - dilutive stock-based compensation 0.0 1.5 0.0 0.9
Diluted - Adjusted weighted-average shares after assumed conversions 117.1 116.1 116.5 115.3
Basic EPS $ (0.15) $ 0.22 $ (0.12) $ 0.42
Diluted EPS $ (0.15) $ 0.22 $ (0.12) $ 0.42