Business Description And Significant Accounting Policies: Property, Plant and Equipment (AFUDC) (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Interest Expense Incurred Net Of Amounts Capitalized | |||
| Public Utilities, General Disclosures [Line Items] | |||
| AFUDC Debt | $ 12.9 | $ 8.7 | $ 6.0 |
| Other Nonoperating Income (Expense) | |||
| Public Utilities, General Disclosures [Line Items] | |||
| AFUDC Equity | $ 10.7 | $ 4.0 | $ 0.4 |