XML 131 R89.htm IDEA: XBRL DOCUMENT
v3.25.3

Regulatory Matters (Regulatory Matters Narrative - Duke Energy Carolinas and Duke Energy Progress) (Details) - USD ($) |  | 9 Months Ended | 15 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 25, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2026 | Mar. 21, 2025 | Dec. 31, 2024
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Capital expenditures |  | $ 9,881,000,000 | $ 9,191,000,000 |  |  |
Debt issuances |  | 6,794,000,000 |  |  |  |
Regulatory liabilities |  | 15,377,000,000 |  |  |  | $ 14,521,000,000
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Debby and Helene |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm restoration costs incurred |  | 789,000,000 |  |  |  |
Capital expenditures, cumulative |  | 494,000,000 |  |  |  |
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Debby and Helene | Forecast |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Capital expenditures |  |  |  | $ 40,000,000 |  |
Duke Energy Carolinas |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Capital expenditures |  | 3,159,000,000 | 2,923,000,000 |  |  |
Debt issuances |  | 1,682,000,000 |  |  |  |
Regulatory liabilities |  | 7,421,000,000 |  |  |  | 6,592,000,000
Duke Energy Carolinas | Storm Recovery Bonds |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Debt issuances |  | 582,000,000 |  |  |  |
Duke Energy Carolinas | Hurricanes Debby and Helene |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm restoration costs incurred |  | 500,000,000 |  |  |  |
Increase (reduction) in regulatory liabilities |  | (112,000,000) |  |  |  |
Capital expenditures, cumulative |  | 400,000,000 |  |  |  |
Duke Energy Progress |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Capital expenditures |  | 2,372,000,000 | $ 2,036,000,000 |  |  |
Debt issuances |  | 2,561,000,000 |  |  |  |
Regulatory liabilities |  | 4,781,000,000 |  |  |  | 4,570,000,000
Duke Energy Progress | Storm Recovery Bonds |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Debt issuances |  | 461,000,000 |  |  |  |
Duke Energy Progress | Hurricanes Debby and Helene |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm restoration costs incurred |  | 289,000,000 |  |  |  |
Increase (reduction) in regulatory liabilities |  | 41,000,000 |  |  |  |
Capital expenditures, cumulative |  | 94,000,000 |  |  |  |
PSCSC | Duke Energy Carolinas | Hurricane Helene |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm reserves |  |  |  |  | $ 25,000,000 |
Total storm restoration costs | $ 556,000,000 |  |  |  |  |
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Carolinas | North Carolina Storms |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm reserves |  |  |  |  |  | 200,000,000
Regulatory liabilities |  | 144,000,000 |  |  |  |
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Progress | North Carolina Storms |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |
Storm reserves |  |  |  |  |  | $ 100,000,000
Regulatory liabilities |  | $ 77,000,000 |  |  |  |

X
- Definition Capital Expenditures, Cumulative + References No definition available. + Details
Name: | duk_CapitalExpendituresCumulative
Namespace Prefix: | duk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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 Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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 The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_RegulatoryLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=duk_StormRecoveryBondsMember
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: |

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

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