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Short-term Borrowings (Tables) | 9 Months Ended
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Sep. 30, 2025
Short-Term Debt [Abstract] |
Schedule of Lines of Credit |
|  | (Millions) |  |  |  |
|  | As of September 30, 2025 |  |  |  | Line of Credit
|  | Outstanding | Available | Maximum | Credit Type |  | Expiration Date
Bank of America |  | $ | 10.0 |  |  | $ | 50.0 |  |  | $ | 60.0 |  |  | Uncommitted |  | July 31, 2026
PNC Bank |  | 28.2 |  |  | $ | 39.8 |  |  | 68.0 |  |  | Committed |  | January 31, 2027
CoBank, ACB |  | 16.8 |  |  | 3.2 |  |  | 20.0 |  |  | Committed |  | May 20, 2028
|  | $ | 55.0 |  |  | $ | 93.0 |  |  | $ | 148.0 |  |  |  |  |
Schedule of Weighted Average Daily Amounts of Borrowings Outstanding and Weighted Average Interest Rates | The weighted average daily amounts of borrowings outstanding under these credit lines and the weighted average interest rates on those amounts were as follows:
|  | (In Thousands)
|  | Three Months Ended September 30, | Nine Months Ended September 30,
|  | 2025 |  | 2024 | 2025 | 2024
Average Daily Amounts Outstanding |  | $ | 61,664 |  |  | $ | 23,476 |  |  | $ | 46,205 |  |  | $ | 44,620 |  |
Weighted Average Interest Rates |  | 5.46 | % |  | 6.41 | % |  | 5.44 | % |  | 6.42 | % |

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- Definition Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Tabular disclosure of short-term debt arrangements (having initial terms of repayment within one year or the normal operating cycle, if longer) including: (1) description of the short-term debt arrangement; (2) identification of the lender or type of lender; (3) repayment terms; (4) weighted average interest rate; (5) carrying amount of funds borrowed under the specified short-term debt arrangement as of the balance sheet date; (6) description of the refinancing of a short-term obligation when that obligation is excluded from current liabilities in the balance sheet; and (7) amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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