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(Loss) Earnings per Share - Schedule of (Loss) Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Subsidiary, Sale of Stock [Line Items]
Net (loss) income - basic	$ (76.6)	$ 13.9
Net (loss) income - diluted	$ (76.6)	$ 13.9
Weighted-average shares outstanding:
Basic (in shares)	97.1	95.3
Effect of dilutive securities:
Diluted (in shares)	97.1	97.6
(Loss) earnings per share, basic (in USD per share)	$ (0.79)	$ 0.15
(Loss) earnings per share, diluted (in USD per share)	$ (0.79)	$ 0.14
Shares excluded from diluted per share amounts because their effect would have been anti-dilutive (in shares)	15.5	6.0
2024 Notes
Effect of dilutive securities:
2024 Notes (in shares)	0.0	0.5
Stock options
Effect of dilutive securities:
Effect of dilutive securities (in shares)	0.0	1.5
Restricted stock
Effect of dilutive securities:
Effect of dilutive securities (in shares)	0.0	0.3

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