Share-based compensation - Fair Value and Valuation Assumptions (Details) - $ / shares |
9 Months Ended | |
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Sep. 28, 2024 |
Sep. 30, 2023 |
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| —SARs | ||
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Weighted average grant date fair value (in usd per share) | $ 6.95 | $ 6.71 |
| Expected volatility (as a percent) | 41.70% | 43.40% |
| Expected option life (in years) | 6 years | 6 years |
| Risk-free interest rate (as a percent) | 4.20% | 4.10% |
| —RSUs | ||
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Weighted average grant date fair value (in usd per share) | $ 14.91 | $ 13.86 |
| —PRSUs | ||
| Share-based Compensation Arrangement by Share-based Payment Award | ||
| Weighted average grant date fair value (in usd per share) | $ 16.37 | $ 15.88 |
| Expected volatility (as a percent) | 31.60% | 37.70% |
| Risk-free interest rate (as a percent) | 4.40% | 4.60% |
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. No definition available.
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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