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Share Plans (Tables) | 9 Months Ended
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Sep. 27, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of Share-based Compensation Expense | Total share-based compensation expense for the three-quarters ended September 27, 2020, and September 29, 2019, was as follows:
|  | Third Quarter |  |  |  | Year-to-date |  |  |
| In millions | 2020 |  | 2019 |  | 2020 |  | 2019 |
| Total share-based compensation charges | $ | 0.8 |  |  | $ | 0.6 |  |  | $ | 2.1 |  |  | $ | 4.0 |  |
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:
|  | 2020 |  | 2019 |
| Dividend yield (%) | 3.39 - 4.09 |  | 2.10 |
| Expected volatility range (%) | 36.48 - 56.28 |  | 35.06 - 44.20 |
| Risk-free interest rate (%) | 0.16 - 0.49 |  | 0.74 - 2.52 |
| Expected life of share options range (years) | 0.50 - 4.00 |  | 0.50 - 4.00 |
| Weighted average exercise price ($) | $1.00 |  | $1.00 |
| Model used | Black-Scholes & Monte-Carlo |  | Black-Scholes & Monte-Carlo |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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