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Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2025

Share-Based Payment Arrangement [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

The following table summarizes our stock-based compensation expense, including stock options, restricted stock units ("RSUs") and performance stock units ("PSUs"), for the three and six months ended June 30, 2025 and 2024:

		Three Months Ended June 30,								Six Months Ended June 30,
(in millions)		2025				2024				2025				2024
Stock option compensation expense		$	—			$	0.1			$	0.1			$	0.3
RSU compensation expense			1.5				1.4				4.9				5.0
PSU compensation expense			(1.0	)			1.0				3.3				2.3
Total stock-based compensation expense		$	0.5			$	2.5			$	8.3			$	7.6

Schedule of Unrecognized Compensation Cost, Nonvested Awards

The following table summarizes our unrecognized compensation expense and the weighted-average period over which the expense will be recognized as of June 30, 2025:

		June 30, 2025
(in millions, except weighted average years)		Unrecognized Compensation Expense		Weighted Average Years Expense To Be Recognized Over
Stock options		—		0.2
RSUs		$9.1		2.1
PSUs		$4.7		1.5

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- Definition

Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (i)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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