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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2025
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, 2025 and 2024, was as follows:
Three months endedNine months ended
In millionsSeptember 30,
2025
September 30,
2024
September 30,
2025
September 30,
2024
Restricted stock units$5.1 $3.8 $14.4 $10.3 
Performance share units3.5 2.2 10.3 5.8 
Stock options2.1 1.4 6.1 4.0 
Total$10.7 $7.4 $30.8 $20.1 
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:
2025 Annual Grant
Risk-free interest rate4.33 %
Expected dividend yield1.16 %
Expected share price volatility37.6 %
Expected term (years)6.1