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Stock and Stock-Based Compensation Plan Summary (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($) installment $ / shares shares	Jun. 30, 2024 USD ($)
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	$ 4.1	$ 3.5	$ 5.8	$ 10.1
PRSUs
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	1.6	1.4	$ 2.1	5.2
PRSUs and/or RSUs grants | shares			0.3
RSUs
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	2.3	2.2	$ 6.0	5.1
PRSUs and/or RSUs grants | shares			0.7
Number of equal annual installments | installment			3
PRSUs and/or RSUs grant date fair value | $ / shares			$ 21.05
Service options
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	0.1	0.2	$ 0.0	0.3
Market Options
Stock and Stock-Based Compensation Plans
Stock-based compensation expense (in dollars)	$ 0.1	$ (0.3)	$ (2.3)	$ (0.5)
PRSUs - Adjusted EBITDA
Stock and Stock-Based Compensation Plans
PRSUs vesting period			3 years
PRSUs and/or RSUs grant date fair value | $ / shares			$ 21.18
PRSUs - TSR PRSUs
Stock and Stock-Based Compensation Plans
PRSUs vesting period			3 years
PRSUs and/or RSUs grant date fair value | $ / shares			$ 33.65

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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