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Stock-Based Compensation Plans (Narrative) (Details) - USD ($) $ in Millions		9 Months Ended
	Feb. 17, 2023	Sep. 30, 2023
Performance Based TSR [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vesting period, years		3 years
Cumulative compensation expense	$ 5.1
Performance Based EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares vesting period, years		3 years
Cumulative compensation expense	$ 4.2
Compensation/Incentive Committee [Member] | Performance Based TSR [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of stock granted	6,078
Compensation/Incentive Committee [Member] | Performance Based EPS [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of stock granted	6,078

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- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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