Regulatory Matters (Regulatory Matters Narrative - Duke Energy Progress) (Details)	Jun. 16, 2022	Oct. 16, 2020
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%

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.

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