Share Plans (Tables)

9 Months Ended

Sep. 30, 2025

Share-Based Payment Arrangement [Abstract]

Total share-based compensation expense for the three and nine months ended September 30, 2025 and 2024 was as follows:


	Three months ended				Nine months ended
In millions	September 30, 2025		September 30, 2024		September 30, 2025		September 30, 2024
Restricted stock units	$	3.8	$	4.4	$	11.0	$	12.5
Stock options	0.6		1.3		4.1		4.0
Performance share units	1.7		4.3		12.2		9.8
Total share-based compensation expense	$	6.1	$	10.0	$	27.3	$	26.3

Schedule of Share-based Payment Award, Stock Options, 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 rate	4.12	%
Expected dividend yield	0.98	%
Expected share price volatility	31.10	%
Expected term (years)	6.9