Business Description And Significant Accounting Policies: Materials, Supplies and Fuel (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Inventory, Net [Abstract] | ||
| Materials and supplies | $ 117.3 | $ 106.1 |
| Fuel | 6.4 | 7.5 |
| Natural gas in storage | 48.7 | 40.3 |
| Total materials, supplies and fuel | $ 172.4 | $ 153.9 |
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- Definition Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of fossil fuel included in inventory classified as other. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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