Business Segment Information: Capital Expenditures and Asset Acquisitions (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Segment Reporting [Line Items] | ||
| Capital Expenditures | $ 583.2 | $ 369.9 |
| Corporate, Non-Segment | ||
| Segment Reporting [Line Items] | ||
| Capital Expenditures | 4.9 | 4.3 |
| Electric Utilities | Operating Segments | ||
| Segment Reporting [Line Items] | ||
| Capital Expenditures | 399.3 | 211.8 |
| Gas Utilities | Operating Segments | ||
| Segment Reporting [Line Items] | ||
| Capital Expenditures | $ 179.0 | $ 153.8 |
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- Definition Amount of increase (decrease) in property, plant, and equipment. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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