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Business Segments (Narrative) (Details) $ in Millions | 9 Months Ended
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Sep. 30, 2020 USD ($) segment
Duke Energy Ohio |
Segment Reporting Information [Line Items] |
Number of reportable segments | segment | 2
Wind and solar | Nonregulated |
Segment Reporting Information [Line Items] |
Renewable merchant plants | $ | $ 150
Joint owner ownership percentage | 51.00%

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- Details
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