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Share Plans (Tables)
9 Months Ended
Oct. 01, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation Expense
Total share-based compensation expense for the quarters ended October 1, 2023, and September 25, 2022, was as follows:
Third QuarterYear-to-date
In millions2023202220232022
Total share-based compensation charges$0.7 $0.9 $2.0 $1.8 
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The following table illustrates the assumptions used in deriving the fair value of share options granted during 2023 and the year-ended December 31, 2022:
20232022
Dividend yield (%)
3.15 - 3.32
2.75 - 3.41
Expected volatility range (%)
31.54 - 43.49
36.11 - 49.43
Risk-free interest rate (%)
3.67 - 5.16
1.28 - 2.99
Expected life of share options range (years)
1.00 - 4.00
0.50 - 4.00
Forfeiture rate (%)5.00 5.00 
Weighted average exercise price ($)$1.00$1.00
Model usedBlack-Scholes & Monte-CarloBlack-Scholes & Monte-Carlo