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Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2024

Share-Based Payment Arrangement [Abstract]

Costs Associated with Share-Based Compensation Plans

The following table summarizes the costs associated with the Company’s share-based compensation plans:

		Three Months Ended September 30,								Nine Months Ended September 30,
(in millions)		2024				2023				2024				2023
Expense:
RSUs		$	7.0			$	6.5			$	32.8			$	32.3
PRSUs			1.1				1.0				4.6				3.5
Employee stock purchase plan			1.6				1.4				5.1				5.1
		$	9.7			$	8.9			$	42.5			$	40.9

Summary of RSU and PSRU Activity

The following table summarizes RSU and PRSU activity for the nine months ended September 30, 2024:

(in millions, except weighted-average grant-date fair value)		Shares				Weighted-average grant-date fair value
Unvested at December 31, 2023			1.0			$	64.19
Granted during 2024			0.9			$	58.79
Vested during 2024			(0.7	)		$	60.48
Unvested at September 30, 2024			1.2			$	62.27

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- References

No definition available.

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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 the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

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

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