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Dispositions (Narrative) (Details) - USD ($) $ in Millions |  |  | 6 Months Ended | 12 Months Ended | 35 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2026 | Aug. 04, 2025 | Jun. 30, 2028 | Dec. 31, 2027 | Jun. 30, 2027 | Dec. 31, 2026 | Jun. 30, 2026 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Jun. 30, 2028 | Oct. 25, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contribution from NCI |  |  |  |  |  |  |  |  | $ 47.0 | $ 278.0 | [1] |  |
Florida Progress LLC |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Termination fee |  | $ 240.0 |  |  |  |  |  |  |  |  |  |  |
Florida Progress LLC | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contribution from NCI |  |  | $ 1,000.0 | $ 1,500.0 | $ 500.0 | $ 200.0 | $ 2,800.0 |  |  |  |  | $ 6,000.0 |
Investment (percent) |  |  | 19.70% |  |  |  | 9.20% |  |  |  |  | 19.70% |
Noncontrolling Interests |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Contribution from NCI |  |  |  |  |  |  |  |  | 47.0 | 278.0 | [1] |  |
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest balance |  |  |  |  |  |  |  |  | 18.0 |  |  |  |
Loss on disposal |  |  |  |  |  |  |  | $ (4.0) | (14.0) | $ (1,725.0) |  |  |
Discontinued Operations, Disposed of by Sale | Brookfield Renewable Partners |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration to be received |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,100.0
Discontinued Operations, Disposed of by Sale | Commercial Renewables Disposal Groups |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Closing period |  |  |  |  |  |  |  |  |  |  |  |  | 18 months
Discontinued Operations, Disposed of by Sale | Commercial Renewables Disposal Groups | Accounts Receivable |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration to be received |  |  |  |  |  |  |  |  | $ 551.0 |  |  |  |
Discontinued Operations, Disposed of by Sale | Piedmont Tennessee Disposal Group | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration to be received | $ 2,480.0 |  |  |  |  |  |  |  |  |  |  |  |
Termination fee as a percentage of the purchase price (percent) | 6.50% |  |  |  |  |  |  |  |  |  |  |  |
[1] | Relates to tax equity financing activity in the Commercial Renewables Disposal Groups.

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