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Earnings (Loss) Per Share - Reconciliation of Weighted-Average Shares (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Net Income (Loss) Attributable to Parent	$ (29.4)	$ 111.6	$ 17.3	$ 73.0
Basic (in shares)	74.8	75.0	75.0	75.0
Unvested restricted stock units	0.0	0.6	1.2	0.5
Diluted (in shares)	74.8	75.6	76.2	75.5

X

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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