Earnings (Loss) 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)	$ 10.0	$ (17.4)	$ 48.7	$ (14.5)
Less: Net income attributable to participating securities	(0.4)	0.0	(1.7)	0.0
Net income (loss) attributable to common shareholders - Basic and Dilutive	$ 9.6	$ (17.4)	$ 47.0	$ (14.5)
Denominators
Basic - Weighted-average shares outstanding	122.0	120.5	121.6	120.3
Basic - Less: Weighted-average participating securities	(4.4)	(3.4)	(4.1)	(3.8)
Basic - Weighted-average common shares outstanding	117.6	117.1	117.5	116.5
Effect of dilutive securities - dilutive stock-based compensation	0.2	0.0	0.1	0.0
Diluted - Adjusted weighted-average shares after assumed conversions	117.8	117.1	117.6	116.5
Basic EPS	$ 0.08	$ (0.15)	$ 0.40	$ (0.12)
Diluted EPS	$ 0.08	$ (0.15)	$ 0.40	$ (0.12)

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