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Share-based Compensation (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Summary of service-based share awards activity

Service-based share awards						Number
Outstanding at January 1, 2023						739,356
Granted						766,929
Vested						(293,404)
Forfeited						(56,107)
Outstanding at December 31, 2023						1,156,774
Performance-based share awards						Number
Outstanding at January 1, 2023						444,056
Granted						407,808
Vested						(45,605)
Forfeited						(203,695)
Outstanding at December 31, 2023						602,564

			Year ended December 31,
Service-based share awards			2023						2022						2021
Weighted average per share fair value of service-based share grants			$	12.58					$	17.30					$	9.97

Summary of share-based compensation expense

The following table summarizes the compensation cost recognized for the years ended December 31, 2023, 2022 and 2021 for all service-based and performance-based share awards. The compensation cost is included as part of selling, general and administrative expenses in our Consolidated Statements of Operations.

			Year ended December 31,
			2023						2022						2021
Share-based compensation (benefit) expense reported:
Performance-based share (benefit) expense			$	2.0					$	(5.0)					$	12.5
Service-based share expense			4.6						4.4						8.3
Total share-based compensation (benefit) expense before income tax			6.6						(0.6)						20.8
Income tax			—						—						—
Total share-based compensation (benefit) expense, net of income tax			$	6.6					$	(0.6)					$	20.8

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- References

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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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Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value.

+ References

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

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

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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