GOODWILL AND INTANGIBLES - FINITE-LIVED INTANGIBLE ASSETS (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
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| Finite-Lived Intangible Assets | ||
| Finite-lived intangible assets, net | $ 18.6 | $ 17.4 |
| Amortization to be recorded as a decrease to operating revenues | ||
| Amortization to be recorded in the next five years | ||
| 2026 | 59.9 | |
| 2027 | 59.9 | |
| 2028 | 59.9 | |
| 2029 | 59.9 | |
| 2030 | 59.9 | |
| Maple Flats | ||
| Finite-Lived Intangible Assets | ||
| Finite-lived intangible assets, accumulated amortization | 2.0 | $ 1.4 |
| Maple Flats | Amortization to be recorded as a decrease to operating revenues | ||
| Amortization to be recorded in the next five years | ||
| 2026 | 1.3 | |
| 2027 | 1.3 | |
| 2028 | 1.3 | |
| 2029 | 1.3 | |
| 2030 | 1.3 | |
| PPAs | Maple Flats | ||
| Finite-Lived Intangible Assets | ||
| Gross carrying amount | $ 18.8 | |
| Weighted average remaining useful life | 15 years |
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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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/exampleRef
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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