XML 133 R92.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Regulatory Matters (Regulatory Matters Narrative - Duke Energy Ohio) (Details) - Duke Energy Ohio - USD ($) $ in Millions | Apr. 01, 2024 | Oct. 12, 2023 | Apr. 28, 2023 | Dec. 01, 2022 | Sep. 19, 2022 | Jul. 14, 2022 | Oct. 01, 2021
--- | --- | --- | --- | --- | --- | --- | ---
Duke Energy Ohio Electric Base Rate Case | PUCO |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  |  |  | $ 23 |  | $ 55
Requested return on equity (as a percent) |  |  |  |  | 9.50% |  |
Equity ratio (as a percent) |  |  |  |  | 50.50% |  |
Duke Energy Ohio Gas Base Rate Case | PUCO |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  | $ 32 |  |  | $ 49 |
Requested return on equity (as a percent) |  |  | 9.60% |  |  |  |
Duke Energy Ohio Gas Base Rate Case | PUCO | Maximum |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Equity ratio (as a percent) |  |  | 52.32% |  |  |  |
Duke Energy Kentucky Electric Base Rate Case | KPSC |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Requested rate increase (decrease), amount |  |  |  | $ 75 |  |  |
Approved rate increase (decrease), amount |  | $ 48 |  |  |  |  |
Duke Energy Kentucky Electric Base Rate Case | KPSC | Maximum |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Equity ratio (as a percent) |  | 52.145% |  |  |  |  |
Duke Energy Kentucky Electric Base Rate Case, Electric Riders | KPSC |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Approved return on equity percentage (as a percent) |  | 9.65% |  |  |  |  |
Duke Energy Kentucky Electric Base Rate Case, Electric Base Rates | KPSC |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Approved return on equity percentage (as a percent) |  | 9.75% |  |  |  |  |
Duke Energy Ohio Energy Security Plan | PUCO | Subsequent event |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |
Settlement rate, period (in years) | 3 years |  |  |  |  |  |

X
- Definition Public Utilities, Equity Ratio + References No definition available. + Details
Name: | duk_PublicUtilitiesEquityRatio
Namespace Prefix: | duk_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Public Utilities, Settlement Rate, Period + References No definition available. + Details
Name: | duk_PublicUtilitiesSettlementRatePeriod
Namespace Prefix: | duk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of public utility's approved rate increase (decrease) by regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of public utility's approved return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesApprovedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_PublicUtilitiesGeneralDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of public utility's requested rate increase (decrease) with regulatory agency. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedRateIncreaseDecreaseAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage of public utility's requested return on equity. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesRequestedReturnOnEquityPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=duk_DukeEnergyOhioElectricBaseRateCaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=duk_PublicUtilitiesCommissionOfOhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=duk_DukeEnergyOhioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=duk_DukeEnergyOhioGasBaseRateCaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=duk_DukeEnergyKentuckyElectricBaseRateCaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAgencyAxis=duk_KPSCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=duk_DukeEnergyKentuckyElectricBaseRateCaseElectricRidersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=duk_DukeEnergyKentuckyElectricBaseRateCaseElectricBaseRatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilitiesRegulatoryProceedingAxis=duk_DukeEnergyOhioEnergySecurityPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |