Stock-based compensation (Options Assumptions) (Details) - Stock Option Plan - $ / shares |
12 Months Ended | ||
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Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Assumptions (1) | |||
| Grant price (in dollars per share) | $ 143.19 | $ 166.61 | $ 157.89 |
| Expected stock price volatility | 22.00% | 23.00% | 23.00% |
| Expected term (years) | 5 years 3 months 18 days | 5 years 4 months 24 days | 5 years 6 months |
| Risk-free interest rate | 2.67% | 3.50% | 2.98% |
| Dividend rate (in dollars per share) | $ 3.55 | $ 3.38 | $ 3.16 |
| Weighted-average grant date fair value (in dollars per share) | $ 26.36 | $ 36.53 | $ 32.96 |
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- Definition The estimated dividend rate (per share) to be paid (expected dividends) to holders of the underlying shares over the term. No definition available.
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- Definition The stock option grant price used in assumptions in determining the value of awards granted to employees. No definition available.
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- References 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 The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. 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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- Details
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