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Variable Interest Entities (Narrative) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Consolidated VIEs |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Financial support |  | $ 0 | $ 0 | $ 0
FES |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
Power Purchase Participation Rate | 4.85% |  |  |
ACP | Non-consolidated VIEs |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Ownership interest |  | 47.00% |  |
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% |  |
OVEC | Duke Energy Ohio | Non-consolidated VIEs |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE 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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- Definition Percent of proceeds from accounts receivable securitization received as subordinated note. + References No definition available. + Details
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- Definition Power Purchase Participation Rate + 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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- Definition Variation in Credit Losses + References No definition available. + Details
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- Definition Variation in Discount Rates + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + 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=121559654&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=121559654&loc=SL6759159-111685 + Details
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