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Business Description And Significant Accounting Policies: Property, Plant and Equipment (AFUDC) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest expense incurred net of amounts capitalized
AFUDC Debt	$ 8.7	$ 6.0	$ 5.6
Other Nonoperating Income (Expense)
AFUDC Equity	$ 4.0	$ 0.4	$ 0.6

X

- Definition

The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 980
-SubTopic 835
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478698/980-835-25-1

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-Topic 980
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-Section 45
-Paragraph 1
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- Definition

Amount capitalized of allowance for funds used during construction.

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-Section 25
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