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Variable Interest Entities (Narrative) (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Nov. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021
VIE primary beneficiary |  |  |
Variable Interest Entities [Line Items] |  |  |
Variable interest entity, financial or other support, amount |  | $ 0 | $ 0
VIE primary beneficiary | CRC |  |  |
Variable Interest Entities [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 |
VIE primary beneficiary | DECNCSF | Duke Energy Carolinas |  |  |
Variable Interest Entities [Line Items] |  |  |
Proceeds from issuance of senior secured bonds | $ 237,000,000 |  |
VIE primary beneficiary | DEPNCSF | Duke Energy Progress |  |  |
Variable Interest Entities [Line Items] |  |  |
Proceeds from issuance of senior secured bonds | $ 770,000,000 |  |
VIE not primary beneficiary | VIE With Ownership In Portfolio Of Wind Projects |  |  |
Variable Interest Entities [Line Items] |  |  |
Variable interest entity ownership interest |  | 50.00% |
VIE not primary beneficiary | OVEC |  |  |
Variable Interest Entities [Line Items] |  |  |
Variable interest entity ownership interest |  | 9.00% |

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- Definition Percent of proceeds from accounts receivable securitization received as cash. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition Percent of proceeds from accounts receivable securitization received as subordinated note. + References No definition available. + Details
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- Definition Minimum equity Balance required by Cinergy Receivables + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
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- Definition The amount of financial or other support the reporting entity has provided (explicitly or implicitly) to the Variable Interest Entity (VIE) that it was not previously contractually required to provide or that the reporting entity intends to provide, including, for example, situations in which the reporting entity assisted the VIE in obtaining another type of support. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123419778&loc=SL6759159-111685 + Details
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- Definition 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. + References No definition available. + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123419778&loc=SL6759159-111685 + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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