Stock-based Employee Compensation, Stock Option Plans, and Deferred Compensation Plan for Directors - Stock Options Issued (Details)	9 Months Ended
Sep. 30, 2023 $ / shares
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Exercise price (in usd per share)	$ 0
Directors \| May 12, 2023
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Exercise price (in usd per share)	33.79
Fair value (in usd per share)	$ 6.53
Volatility	31.90%
Expected life (years)	5 years
Assumed yield	4.94%
Risk-free rate	3.45%
Directors \| May 13, 2022
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Exercise price (in usd per share)	$ 47.90
Fair value (in usd per share)	$ 8.34
Volatility	30.00%
Expected life (years)	5 years
Assumed yield	4.90%
Risk-free rate	2.89%
Officers \| May 12, 2023
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Exercise price (in usd per share)	$ 33.79
Fair value (in usd per share)	$ 6.06
Volatility	28.80%
Expected life (years)	7 years
Assumed yield	4.96%
Risk-free rate	3.45%
Officers \| May 13, 2022
Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]
Exercise price (in usd per share)	$ 47.90
Fair value (in usd per share)	$ 7.66
Volatility	27.10%
Expected life (years)	7 years
Assumed yield	4.93%
Risk-free rate	2.95%

Share Based Compensation Arrangements By Share Based Payment Award Options [Line Items]

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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

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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

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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

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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

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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

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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

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