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Regulatory Matters (Schedule of Net Carrying Value Of Facilities and Megawatt Capacity) (Details) $ in Millions | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 USD ($) MW | Dec. 31, 2034 asset | Dec. 31, 2021 USD ($)
Public Utilities, General Disclosures [Line Items] |  |  |
Net property, plant and equipment | $ 113,851 |  | $ 111,408
Duke Energy Carolinas |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Net property, plant and equipment | 34,959 |  | 34,122
Duke Energy Progress |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Net property, plant and equipment | 23,908 |  | 23,657
Duke Energy Florida |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Net property, plant and equipment | 18,617 |  | 18,046
Duke Energy Indiana |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Net property, plant and equipment | $ 11,885 |  | $ 11,760
Generation facilities to be retired |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 8,386 |  |
Net property, plant and equipment | $ 6,049 |  |
Generation facilities to be retired | Duke Energy Carolinas | Allen Steam Station Unit 1 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 167 |  |
Net property, plant and equipment | $ 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 |  |
Net property, plant and equipment | $ 265 |  |
Generation facilities to be retired | Duke Energy Carolinas | Cliffside Unit 5 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 546 |  |
Net property, plant and equipment | $ 362 |  |
Generation facilities to be retired | Duke Energy Progress | Mayo Unit 1 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 713 |  |
Net property, plant and equipment | $ 634 |  |
Generation facilities to be retired | Duke Energy Progress | Roxboro Units 3-4 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 1,409 |  |
Net property, plant and equipment | $ 443 |  |
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 |  |
Net property, plant and equipment | $ 1,615 |  |
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 (in years) |  | 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 |  |
Net property, plant and equipment | $ 2,058 |  |
Generation facilities to be retired | Duke Energy Indiana | Cayuga Units 1-2 |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |
Capacity (in MW) | MW | 1,005 |  |
Net property, plant and equipment | $ 660 |  |

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