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v3.24.0.1

Share-based Payments (Fair Value Assumptions) (Details) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Risk free interest rate | 4.20% | 2.20% | 0.50%
Expected dividend yield | 1.84% | 1.74% | 1.64%
Expected lives | 4 years | 4 years | 4 years
Expected volatility | 35.80% | 31.80% | 32.30%
Stock options | IAA |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Risk free interest rate | 3.90% |  |
Expected dividend yield | 2.05% |  |
Expected lives | 2 years |  |
Expected volatility | 33.30% |  |
Premium-priced stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Risk free interest rate |  | 3.00% | 1.10%
Expected dividend yield |  | 1.63% | 1.59%
Expected lives |  | 4 years | 5 years
Expected volatility |  | 30.20% | 30.60%
Performance Share Units With Market Conditions |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Risk free interest rate | 4.50% | 2.70% |
Expected dividend yield | 0.00% | 1.63% |
Expected lives | 2 years | 2 years |
Expected volatility | 32.70% | 33.40% |
Average expected volatility of comparable companies | 48.60% | 34.40% |
Employee Share Purchase Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Risk free interest rate |  | 5.30% |
Expected dividend yield |  | 1.81% |
Expected lives |  | 8 months |
Expected volatility |  | 28.10% |

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- Definition Share Based Compensation Arrangement By Share Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Of Comparable Companies + References No definition available. + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Line items represent financial concepts included in a table. 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