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Commitments and Contingencies (Narrative) (Details) $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Aug. 11, 2021 people | Jun. 16, 2021 people | Dec. 31, 2023 USD ($) reactor case | Dec. 31, 2022 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Number of licensed nuclear reactors | reactor |  |  | 95 |
Insured public liability limit per nuclear incident |  |  | $ 16,200.0 |
Excess nuclear liability program coverage |  |  | 16,200.0 |
Pro rata assessment for each reactor owned for each incident exceeding public liability insurance |  |  | 166.0 |
Annual payment limit to pro rata assessments |  |  | 24.7 |
Industry aggregate limit |  |  | 3,200.0 |
Sublimit for non-nuclear terrorist events |  |  | 1,800.0 |
Sublimit property damage losses |  |  | 1,500.0 |
Additional nuclear accident limit |  |  | $ 1,250.0 |
Accidental outage insurance coverage initial weeks (in days) |  |  | 365 days |
Insurance coverage percentage initial weeks (as a percent) |  |  | 100.00% |
Accidental outage insurance coverage additional weeks (in days) |  |  | 770 days |
Insurance coverage percentage additional weeks (as a percent) |  |  | 80.00% |
Weeks of sublimits for accidental outage coverage (in days) |  |  | 728 days |
Sublimit accidental outage recovery |  |  | $ 328.0 |
Maximum magnitude of retroactive premiums |  |  | 10 |
Maximum period for retroactive premium assessment (in years) |  |  | 6 years |
Maximum | Pipeline and storage capacity contracts |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Long-term purchase commitment term (in years) |  |  | 19 years |
Maximum | Natural gas supply contracts fixed payment |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Long-term purchase commitment term (in years) |  |  | 2 years |
Maximum | Natural gas supply purchase commitments |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Long-term purchase commitment term (in years) |  |  | 7 years |
Texas Storm Uri Tort Litigation | Pending Litigation |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of pending claims | case |  |  | 5 |
Duke Energy Carolinas |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Primary nuclear liability program coverage |  |  | $ 450.0 |
Max retroactive premium assessments |  |  | 147.0 |
Duke Energy Carolinas | Asbestos Issue |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Asbestos-related injuries and damages reserves |  |  | 423.0 | $ 457.0
Loss contingency, receivable, noncurrent |  |  | 572.0 | 595.0
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 | 4 |  |
Number of deceased individuals | people |  | 5 |  |
Duke Energy Progress |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Primary nuclear liability program coverage |  |  | 450.0 |
Max retroactive premium assessments |  |  | 90.0 |
Duke Energy Florida |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Primary nuclear liability program coverage |  |  | 100.0 |
Max retroactive premium assessments |  |  | 1.0 |
Duke Energy and Duke Energy Carolinas | ASU 2016-13 |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Premium receivable, allowance for credit loss |  |  | $ 9.0 | $ 12.0
Catawba | Duke Energy Carolinas |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of licensed nuclear reactors | reactor |  |  | 2 |
Dedicated additional nuclear accident limit |  |  | $ 1,250.0 |
Additional Non-nuclear accident limit |  |  | 750.0 |
Accidental outage insurance coverage policy limit |  |  | $ 490.0 |
Potential obligation percentage (as a percent) |  |  | 100.00% |
McGuire | Duke Energy Carolinas |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of licensed nuclear reactors | reactor |  |  | 2 |
Oconee | Duke Energy Carolinas |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of licensed nuclear reactors | reactor |  |  | 3 |
Additional Non-nuclear accident limit |  |  | $ 750.0 |
Harris | Duke Energy Progress |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of licensed nuclear reactors | reactor |  |  | 1 |
Robinson | Duke Energy Carolinas |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Accidental outage insurance coverage policy limit |  |  | $ 378.0 |
Robinson | Duke Energy Progress |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of licensed nuclear reactors | reactor |  |  | 1 |
Brunswick | Duke Energy Carolinas |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Accidental outage insurance coverage policy limit |  |  | $ 462.0 |
Brunswick | Duke Energy Progress |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of licensed nuclear reactors | reactor |  |  | 2 |
Crystal River Unit 3 | Duke Energy Florida |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Sublimit property damage losses |  |  | $ 50.0 |

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