XML 184 R122.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Regulatory Matters (Duke Energy Narrative) (Details) - USD ($) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jun. 07, 2021 | Jun. 06, 2021 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | $ 12,263 | $ 12,622 | $ 11,419
Operation, maintenance and other |  |  |  | 5,389 | 5,625 | 5,734
Regulatory assets |  |  |  | 17,010 | 17,266 |
Other Noncurrent Assets: Regulatory assets |  |  |  | $ 14,254 | 13,618 |
Nuclear Regulatory Commission |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Operating license extension (in years) |  |  |  | 20 years |  |
Hurricanes Helene, Debby and Milton |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Estimated storm restoration costs |  |  |  | $ 2,600 |  |
Hurricanes Helene, Debby and Milton | Forecast |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Estimated storm restoration costs |  |  | $ 200 |  |  |
Hurricanes Helene, Debby and Milton | Minimum |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Estimated storm restoration costs |  |  |  | $ 2,800 |  |
Duke Energy Ohio |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Limit of total capital (as a percent) |  |  |  | 30.00% |  |
Capital expenditures |  |  |  | $ 815 | 939 | 850
Operation, maintenance and other |  |  |  | 485 | 478 | 523
Regulatory assets |  |  |  | 793 | 749 |
Other Noncurrent Assets: Regulatory assets |  |  |  | $ 705 | 676 |
Duke Energy Kentucky |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Required minimum equity capital structure (as a percent) |  |  |  | 35.00% |  |
Duke Energy Carolinas and Duke Energy Progress | Natural Disasters and Other Casualty Events |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Other Noncurrent Assets: Regulatory assets |  |  |  | $ 802 | 87 |
Duke Energy Carolinas and Duke Energy Progress | Natural Disasters and Other Casualty Events | Minimum |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm costs incurred |  |  |  | 95 |  |
Capital expenditures |  |  |  | 8 |  |
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Helene, Debby and Milton | Minimum |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm costs incurred |  |  |  | 860 |  |
Capital expenditures |  |  |  | 548 |  |
Duke Energy Carolinas |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | 3,966 | 3,733 | 3,304
Operation, maintenance and other |  |  |  | 1,740 | 1,774 | 1,892
Regulatory assets |  |  |  | 4,884 | 5,480 |
Other Noncurrent Assets: Regulatory assets |  |  |  | 4,199 | 3,916 |
Duke Energy Carolinas | Oconee Nuclear Station Subsequent License Renewal | Nuclear Regulatory Commission | Oconee |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Operating license extension (in years) | 20 years |  |  |  |  |
Operating license (in years) | 80 years | 60 years |  |  |  |
Duke Energy Carolinas | Natural Disasters and Other Casualty Events |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Other Noncurrent Assets: Regulatory assets |  |  |  | 34 | 32 |
Duke Energy Carolinas | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm reserves |  |  |  | 200 |  |
Duke Energy Carolinas | Natural Disasters and Other Casualty Events | Minimum |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm costs incurred |  |  |  | 612 |  |
Capital expenditures |  |  |  | 402 |  |
Duke Energy Carolinas | Hurricanes Helene, Debby and Milton |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Other Noncurrent Assets: Regulatory assets |  |  |  | 583 |  |
Duke Energy Progress |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | 2,803 | 2,387 | 2,070
Operation, maintenance and other |  |  |  | 1,388 | 1,379 | $ 1,475
Regulatory assets |  |  |  | 5,181 | 5,488 |
Other Noncurrent Assets: Regulatory assets |  |  |  | 4,555 | 4,546 |
Duke Energy Progress | Natural Disasters and Other Casualty Events |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Other Noncurrent Assets: Regulatory assets |  |  |  | 47 | $ 55 |
Duke Energy Progress | Natural Disasters and Other Casualty Events | Hurricanes Helene, Debby and Milton | NCUC |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm reserves |  |  |  | 100 |  |
Duke Energy Progress | Natural Disasters and Other Casualty Events | Minimum |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm costs incurred |  |  |  | 248 |  |
Capital expenditures |  |  |  | 146 |  |
Duke Energy Progress | Hurricanes Helene, Debby and Milton |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Other Noncurrent Assets: Regulatory assets |  |  |  | $ 219 |  |

X
- Definition Percentage of Total Capital allowed as distribution. + References No definition available. + Details
Name: | duk_LimitofTotalCapital
Namespace Prefix: | duk_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total expenditures for long-lived assets additions other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets. + References No definition available. + Details
Name: | duk_NoncurrentAssetAdditions
Namespace Prefix: | duk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Public Utilities, Operating License Extension, Period + References No definition available. + Details
Name: | duk_PublicUtilitiesOperatingLicenseExtensionPeriod
Namespace Prefix: | duk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Required minimum equity capital structure percent + References No definition available. + Details
Name: | duk_RequiredEquityCapitalStructurePercent
Namespace Prefix: | duk_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Unusual or Infrequent Item, or Both, Total Storm Restoration Costs + References No definition available. + Details
Name: | duk_UnusualOrInfrequentItemOrBothTotalStormRestorationCosts
Namespace Prefix: | duk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Carrying amount as of the balance sheet date of the portion of the reserved funds established by a utility from customer payments to cover the repair costs of damages from major storms, which repairs are expected to be incurred beyond one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 25 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477711/980-340-25-1 + Details
Name: | us-gaap_AssetRecoveryDamagedPropertyCostsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 720 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483359/720-20-50-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 27 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482395/460-10-55-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-2 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
Name: | us-gaap_RegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
Name: | us-gaap_RegulatoryAssetsNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of operating expenses for the period that are associated with the utility's normal revenue producing operation; including selling, general, and administrative expenses, costs incurred for routine plant repairs and maintenance, and operations. + References No definition available. + Details
Name: | us-gaap_UtilitiesOperatingExpenseMaintenanceOperationsAndOtherCostsAndExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=duk_HurricanesHeleneDebbyAndMiltonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
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: | dei_LegalEntityAxis=duk_DukeEnergyKentuckyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_UnusualOrInfrequentItemAxis=us-gaap_NaturalDisastersAndOtherCasualtyEventsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_OconeeNuclearStationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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