XML 58 R39.htm IDEA: XBRL DOCUMENT v3.25.0.1
Share Plans (Tables)
 12 Months Ended
Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Compensation Cost
Total share-based compensation expense for 2024, 2023 and 2022 was as follows:
December 31
In millions202420232022
Stock options$5.3 $4.3 $3.7 
Restricted stock units16.1 15.0 14.6 
Performance share units18.3 9.8 6.6 
Total share-based compensation expense$39.7 $29.1 $24.9 
Stock Option Activity
The following table summarizes stock option activity under all plans for the year ended December 31, 2024:
Shares and intrinsic value in millionsNumber of sharesWeighted-
average
exercise
price		Weighted-
average
remaining
contractual life
(years)		Aggregate
intrinsic
value
Outstanding as of January 1, 20242.3 $45.07 
Granted0.2 72.78 
Exercised(0.8)40.20 
Outstanding as of December 31, 20241.7 $50.35 5.6$86.8 
Options exercisable as of December 31, 20241.2 $46.36 4.5$67.2 
Options expected to vest as of December 31, 20240.5 $60.38 8.3$19.2 
Stock Option Fair Value 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:
 December 31
 202420232022
Risk-free interest rate4.44 %4.00 %1.18 %
Expected dividend yield1.43 %2.02 %1.14 %
Expected share price volatility30.90 %30.40 %29.60 %
Expected term (years)6.56.16.4
Restricted Stock Activity
The following table summarizes restricted stock unit activity under all plans for the year ended December 31, 2024:
Shares in millionsNumber of
shares		Weighted
average
grant date
fair value
Outstanding as of January 1, 20240.6 $53.88 
Granted0.3 75.88 
Vested(0.3)54.93 
Forfeited(0.1)62.86 
Outstanding as of December 31, 20240.5 $62.93 
Performance Shares Award Outstanding Activity
The following table summarizes performance share unit activity under all plans for the year ended December 31, 2024:
Shares in millionsNumber of
shares		Weighted
average
grant date
fair value
Outstanding as of January 1, 20240.4 $54.06 
Granted0.2 71.97 
Vested(0.2)52.41 
Outstanding as of December 31, 20240.4 $59.68