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Debt and Credit Arrangements (Schedule of Debt) (Parenthetical) (Details)		12 Months Ended
	Aug. 21, 2025	Dec. 31, 2025	Dec. 31, 2024
Senior debentures maturing April 15, 2026 [Member]
Debt Instrument [Line Items]
Maturity date		Apr. 15, 2026	Apr. 15, 2026
Senior debentures maturing October 15, 2025 [Member]
Debt Instrument [Line Items]
Maturity date	Oct. 15, 2025	Oct. 15, 2025	Oct. 15, 2025
Senior debentures maturing September 1, 2035 [Member]
Debt Instrument [Line Items]
Maturity date	Sep. 01, 2035	Sep. 01, 2035	Sep. 01, 2035
Senior debentures maturing September 1, 2030 [Member]
Debt Instrument [Line Items]
Maturity date		Sep. 01, 2030	Sep. 01, 2030
Subordinated debentures maturing February 3, 2027 [Member]
Debt Instrument [Line Items]
Maturity date		Feb. 03, 2027	Feb. 03, 2027

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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