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Commitments and Contingencies (Narrative) (Details) $ in Millions |  | 1 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 16, 2021 people | Jun. 30, 2022 USD ($) case | Apr. 30, 2022 USD ($) | Dec. 31, 2021 USD ($) | Nov. 15, 2021 lawsuit | Jun. 18, 2018 USD ($)
Texas Storm Uri Tort Litigation | Pending Litigation |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, pending claims, number | case |  | 5 |  |  |  |
Number of cases named as defendant | case |  | 3 |  |  |  |
Duke Energy Carolinas | Ruben Villano, et al. v. Duke Energy Carolinas, LLC | Pending Litigation |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Loss contingency, pending claims, number | lawsuit |  |  |  |  | 1 |
Number of individuals | people | 9 |  |  |  |  |
Number of survivors | people | 4 |  |  |  |  |
Number of deceased individuals | people | 5 |  |  |  |  |
Duke Energy Carolinas | Asbestos-related Injuries and Damages Claims |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Asbestos-related injuries and damages reserves |  | $ 488 |  | $ 501 |  |
Probable insurance recoveries |  | 644 |  | 644 |  |
Duke Energy and Duke Energy Carolinas | ASU 2016-13 |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Reserve for credit losses for insurance receivables |  | 12 |  | $ 12 |  |
Duke Energy Progress | Spent Nuclear Fuel Matters |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Gain contingency, unrecorded amount |  |  |  |  |  | $ 100
Amount awarded |  |  | $ 87 |  |  |
Duke Energy Florida | Spent Nuclear Fuel Matters |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Gain contingency, unrecorded amount |  |  |  |  |  | $ 200
Amount awarded |  | $ 180 |  |  |  |

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