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Shareholders' Equity and Long-Term Incentive Compensation - Components Used for Calculation of Basic and Diluted Income (Loss) (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator:
Income from continuing operations	$ 201.8	$ 144.7	$ 19.8
Loss from discontinued operations, net of tax	$ (1.3)	$ (54.8)	$ (19.6)
Denominator:
Weighted-average number of common shares used in basic income per share (in shares)	46,187	45,545	45,345
Dilutive securities — Employee stock options and restricted stock units (in shares)	891	1,067	876
Weighted-average number of common shares and dilutive securities used in diluted income per share (in shares)	47,078	46,612	46,221

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Amount after tax of income (loss) from continuing operations attributable to the parent.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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