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Variable Interest Entities (Narrative) (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Feb. 28, 2021
Consolidated VIEs |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Financial support |  | $ 0 | $ 0 | $ 0 |
ACP | Current Liabilities | Atlantic Coast Pipeline (ACP) |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Guarantor obligations settled |  |  |  |  | $ 855,000,000
Atlantic Coast Pipeline (ACP) | Current Liabilities | Atlantic Coast Pipeline (ACP) |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Guarantor obligations settled |  |  |  |  | $ 855,000,000
Atlantic Coast Pipeline (ACP) | Duke Energy (Parent) |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Ownership interest |  | 47.00% |  |  |
Repayments of debt |  |  |  | $ 855,000,000 |
CRC |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Variation in credit losses |  | 10.00% |  |  |
Variation in discount rates |  | 20.00% |  |  |
CRC | Consolidated VIEs |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Percent of proceeds received as cash |  | 75.00% |  |  |
Percent of proceeds received as subordinated note |  | 25.00% |  |  |
Minimum Equity Balance required by Cinergy Receivables |  | $ 3,000,000 |  |  |
CRC | Duke Energy Ohio | Non-consolidated VIEs |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Fixed interest rate added to LIBOR to compute variable rate |  | 1.00% |  |  |
DECNCSF | Duke Energy Carolinas | Consolidated VIEs |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Proceeds from issuance of senior secured bonds | $ 237,000,000 |  |  |  |
DEPNCSF | Duke Energy Progress | Consolidated VIEs |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |
Proceeds from issuance of senior secured bonds | $ 770,000,000 |  |  |  |

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