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Dispositions (Duke Energy Discontinued Operations) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
(Loss) Income from discontinued operations, net of tax | $ (1,293) | $ 3 | $ (18) | $ (15) | $ (36) | $ (57) | $ (25) | $ (26) | $ (1,323) | $ (144) | $ (7)
Discontinued Operations, Held-for-sale |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
(Loss) Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | (1,323) | (144) | (7)
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
(Loss) Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | (1,349) | (151) | (14)
Discontinued Operations, Held-for-sale | Other |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |
(Loss) Income from discontinued operations, net of tax |  |  |  |  |  |  |  |  | $ 26 | $ 7 | $ 7

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