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Commitments and Contingencies (Narrative) (Details) $ in Millions | Jun. 16, 2021 people | Mar. 31, 2023 USD ($) case | Dec. 31, 2022 USD ($)
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Texas Storm Uri Tort Litigation | Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, pending claims, number | case |  | 5 |
Duke Energy Carolinas | Ruben Villano, et al. v. Duke Energy Carolinas, LLC | Pending Litigation |  |  |
Loss Contingencies [Line Items] |  |  |
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 | $ |  | $ 451 | $ 457
Probable insurance recoveries | $ |  | 595 | 595
Duke Energy and Duke Energy Carolinas | ASU 2016-13 |  |  |
Loss Contingencies [Line Items] |  |  |
Reserve for credit losses for insurance receivables | $ |  | $ 12 | $ 12

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