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Stock-Based Compensation - Share-based Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 0.5	$ 2.5	$ 8.3	$ 7.6
Stock option compensation expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	0.0	0.1	0.1	0.3
RSU compensation expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1.5	1.4	4.9	5.0
PSU compensation expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ (1.0)	$ 1.0	$ 3.3	$ 2.3

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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