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Share Plans (Tables)
6 Months Ended
Jun. 28, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Share-based Compensation Expense
Total share-based compensation expense for the quarters ended June 28, 2020, and June 30, 2019, was as follows:
Second QuarterYear-to-date
In millions2020201920202019
Total share-based compensation charges$0.8  $0.8  $1.3  $3.4  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The following table illustrates the assumptions used in deriving the fair value of share options granted during 2020 and the year-ended December 31, 2019:
20202019
Dividend yield (%)2.10  2.10  
Expected volatility range (%)39.00  
35.06 - 44.20
Risk-free interest rate (%)1.60  
0.74 - 2.52
Expected life of share options range (years)
1.00 - 4.00
0.50 - 4.00
Weighted average exercise price ($)$1.00$1.00
Model usedBlack-Scholes & Monte-CarloBlack-Scholes & Monte-Carlo