XML 94 R53.htm IDEA: XBRL DOCUMENT
v3.22.1

Regulatory Matters (Schedule of Net Carrying Value Of Facilities and Megawatt Capacity) (Details) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 USD ($) MW | Dec. 31, 2034 asset | Dec. 31, 2021 USD ($)
Public Utilities, General Disclosures [Line Items] |  |  |
Public utilities, property, plant and equipment, net | $ 112,316 |  | $ 111,408
Duke Energy Carolinas |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Public utilities, property, plant and equipment, net | 34,463 |  | 34,122
Duke Energy Progress |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Public utilities, property, plant and equipment, net | 23,694 |  | 23,657
Duke Energy Florida |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Public utilities, property, plant and equipment, net | 18,254 |  | 18,046
Duke Energy Indiana |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Public utilities, property, plant and equipment, net | $ 11,801 |  | $ 11,760
Generation facilities to be retired |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 8,386 |  |
Public utilities, property, plant and equipment, net | $ 6,094 |  |
Generation facilities to be retired | Duke Energy Carolinas | Allen Steam Station Unit 1 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 167 |  |
Public utilities, property, plant and equipment, net | $ 12 |  |
Generation facilities to be retired | Duke Energy Carolinas | Allen Steam Station Unit 5 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 259 |  |
Public utilities, property, plant and equipment, net | $ 265 |  |
Generation facilities to be retired | Duke Energy Carolinas | Cliffside Unit 5 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 546 |  |
Public utilities, property, plant and equipment, net | $ 358 |  |
Generation facilities to be retired | Duke Energy Progress | Mayo Unit 1 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 713 |  |
Public utilities, property, plant and equipment, net | $ 621 |  |
Generation facilities to be retired | Duke Energy Progress | Roxboro Units 3-4 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 1,409 |  |
Public utilities, property, plant and equipment, net | $ 450 |  |
Generation facilities to be retired | Duke Energy Florida | Crystal River Units 4-5 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 1,442 |  |
Public utilities, property, plant and equipment, net | $ 1,636 |  |
Generation facilities to be retired | Duke Energy Florida | Crystal River Units 4 and 5 | Forecast |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Facilities retiring ahead of schedule | asset |  | 2 |
Facilities retiring ahead of schedule, years ahead |  | 8 years |
Generation facilities to be retired | Duke Energy Indiana | Gibson Units 1-5 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 2,845 |  |
Public utilities, property, plant and equipment, net | $ 2,076 |  |
Generation facilities to be retired | Duke Energy Indiana | Cayuga Units 1-2 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 1,005 |  |
Public utilities, property, plant and equipment, net | $ 676 |  |

X
- Definition Coal-Fired Generation Capacity, in Megawatts + References No definition available. + Details
Name: | duk_CoalFiredGenerationCapacityPotentialPlantsToBeRetiredInMegawatts
Namespace Prefix: | duk_
Data Type: | dtr-types:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Facilities Retiring Ahead of Schedule, Years Ahead + References No definition available. + Details
Name: | duk_FacilitiesRetiringAheadOfScheduleYearsAhead
Namespace Prefix: | duk_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Facilities To Be Retired Earlier Than Scheduled + References No definition available. + Details
Name: | duk_FacilitiesToBeRetiredEarlierThanScheduled
Namespace Prefix: | duk_
Data Type: | xbrli:integerItemType
Balance Type: | na
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 Period end amount of total net PPE. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=duk_GenerationFacilitiesToBeRetiredMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_AllenSteamStationUnit1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_AllenSteamStationUnit5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_CliffsideUnit5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_MayoUnit1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_RoxboroUnits34Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_CrystalRiverUnits45Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_CrystalRiverUnits4And5Member
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: | us-gaap_PublicUtilityAxis=duk_GibsonUnits1Through5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PublicUtilityAxis=duk_CayugaUnits1And2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |