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Regulatory Matters (Regulatory Matters Narrative - Duke Energy Progress) (Details) | Jun. 16, 2022 | Oct. 16, 2020
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Duke Energy Progress | FERC | FERC Return on Equity Complaint, NCEMC |  |
Public Utilities, General Disclosures [Line Items] |  |
Approved return on equity percentage (as a percent) | 10.00% | 11.00%

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