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Stock-based Employee Compensation, Stock Option Plans, and Deferred Compensation Plan for Directors - Stock Options Issued (Detail) | 12 Months Ended
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Dec. 31, 2024 $ / shares | Dec. 31, 2023 $ / shares | Dec. 31, 2022 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise price (in usd per share) | $ 33.79 | $ 0 | $ 44.44
Directors | 45058 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise price (in usd per share) | 33.79 |  |
Fair value per option (in usd per share) | $ 6.53 |  |
Volatility | 0.319 |  |
Expected life (years) | 5 years |  |
Assumed yield | 4.94% |  |
Risk-free rate | 3.45% |  |
Directors | 44694 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise price (in usd per share) | $ 47.90 |  |
Fair value per option (in usd per share) | $ 8.34 |  |
Volatility | 0.300 |  |
Expected life (years) | 5 years |  |
Assumed yield | 4.90% |  |
Risk-free rate | 2.89% |  |
Officers | 45058 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise price (in usd per share) | $ 33.79 |  |
Fair value per option (in usd per share) | $ 6.06 |  |
Volatility | 0.288 |  |
Expected life (years) | 7 years |  |
Assumed yield | 4.96% |  |
Risk-free rate | 3.45% |  |
Officers | 44694 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Exercise price (in usd per share) | $ 47.90 |  |
Fair value per option (in usd per share) | $ 7.66 |  |
Volatility | 0.271 |  |
Expected life (years) | 7 years |  |
Assumed yield | 4.93% |  |
Risk-free rate | 2.95% |  |

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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 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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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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. + 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)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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