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Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense

Total share-based compensation expense for the three and nine months ended September 30, 2023 and 2022, was as follows:

			Three months ended						Nine months ended
In millions			September 30, 2023			September 30, 2022			September 30, 2023			September 30, 2022
Restricted stock units			$	3.0		$	2.5		$	8.4		$	7.4
Performance share units			1.9			2.3			5.7			7.3
Stock options			1.2			1.1			3.4			3.1
Total			$	6.1		$	5.9		$	17.5		$	17.8

Schedule of Valuation Assumptions

We estimated the fair value of each stock option award issued in the annual share-based compensation grant using a Black-Scholes option pricing model, modified for dividends, and using the following assumptions:

			2023 Annual Grant
Risk-free interest rate			3.77		%
Expected dividend yield			1.73		%
Expected share price volatility			36.6		%
Expected term (years)			6.5

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Tabular disclosure of share-based payment arrangement.

+ References

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

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (f)(2)
-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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