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Short-term Borrowings (Tables)
9 Months Ended
Sep. 30, 2025
Short-Term Debt [Abstract]  
Schedule of Lines of Credit
(Millions)
As of September 30, 2025Line of Credit
OutstandingAvailableMaximumCredit TypeExpiration Date
Bank of America$10.0 $50.0 $60.0 UncommittedJuly 31, 2026
PNC Bank28.2 $39.8 68.0 CommittedJanuary 31, 2027
CoBank, ACB16.8 3.2 20.0 CommittedMay 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,
2025202420252024
Average Daily Amounts Outstanding$61,664 $23,476 $46,205 $44,620 
Weighted Average Interest Rates5.46%6.41%5.44%6.42%