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CONDENSED CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (Unaudited) (Parentheticals)	6 Months Ended
	Jun. 30, 2025
First Mortgage Bonds due 2026-2059
Long term debt maturity period	2026-2059
Amortizing Secured Notes due 2028-2046
Long term debt maturity period	2028-2046
State Revolving Trust Notes due 2026-2044
Long term debt maturity period	2026-2044
Minimum | First Mortgage Bonds due 2026-2059
Interest rate	0.00%
Minimum | Amortizing Secured Notes due 2028-2046
Interest rate	3.94%
Minimum | State Revolving Trust Notes due 2026-2044
Interest rate	0.00%
Maximum | First Mortgage Bonds due 2026-2059
Interest rate	5.50%
Maximum | Amortizing Secured Notes due 2028-2046
Interest rate	7.05%
Maximum | State Revolving Trust Notes due 2026-2044
Interest rate	4.03%

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

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Disclosure of timing of required repayments, sinking fund requirements, and other redeemable securities at fixed or determinable prices and dates in the five years immediately following the date of the latest balance sheet presented in the financial statements, and the amount thereafter to fully repay the principal of long-term debt. These disclosures may be made either on an individual debt or security basis, by type of debt or security basis, or on a combined basis.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-SubTopic 10
-Topic 470
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-1

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