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Earnings (Loss) Per Share - Schedule of Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Numerator:        
Net income (loss), basic $ (5.9) $ 24.8 $ 22.7 $ 68.1
Add convertible notes interest 0.0 0.2 0.6 0.8
Net income (loss), diluted $ (5.9) $ 25.0 $ 23.3 $ 68.9
Denominator:        
Weighted average shares outstanding, basic (in shares) 43.1 44.1 43.4 44.0
Dilutive effect of stock-based awards (in shares) 0.0 2.1 1.1 2.0
Dilutive effect of convertible notes (in shares) 0.0 1.7 1.7 2.0
Weighted average shares outstanding, diluted (in shares) 43.1 47.9 46.2 48.0
Basic earnings (loss) per share $ (0.13) $ 0.56 $ 0.52 $ 1.55
Diluted earnings (loss) per share $ (0.13) $ 0.51 $ 0.49 $ 1.43