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Share-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2023

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:

		Year ended December 31,
		2023				2022				2021
		(in millions)
Expense:
RSUs		$	38.4			$	57.9			$	47.7
PRSUs			4.5				2.8				—
Employee stock purchase plan			6.2				6.6				5.9
		$	49.1			$	67.3			$	53.6

Summary of RSU and PSRU Activity

The following table summarizes RSU and PRSU activity for the year ended December 31, 2023:

(in millions, except weighted-average grant-date fair value)		Shares				Weighted-average grant-date fair value
Unvested at December 31, 2022			0.9			$	63.01
Granted during 2023			0.8				63.73
Vested during 2023			(0.7	)			62.30
Unvested at December 31, 2023			1.0			$	64.19

X

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

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