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Regulatory Matters (Duke Energy Progress Narrative) (Details) |  |  |  |  |  |  | 12 Months Ended |  |
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Feb. 07, 2025 USD ($) MW | Mar. 28, 2024 USD ($) MW | Aug. 18, 2023 USD ($) | Apr. 16, 2023 | Oct. 06, 2022 | Sep. 01, 2022 USD ($) | Aug. 17, 2027 USD ($) | Aug. 17, 2026 USD ($) | Aug. 17, 2025 USD ($) | Dec. 31, 2024 USD ($) | Aug. 17, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jan. 01, 2026 MW | Apr. 25, 2024 USD ($)
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  |  |  |  | $ 38,000,000 |  | $ 85,000,000 | $ 434,000,000 |  |
Operation, maintenance and other |  |  |  |  |  |  |  |  |  | 5,389,000,000 |  | 5,625,000,000 | 5,734,000,000 |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | 7,740,000,000 |  | 9,825,000,000 |  |  |
Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  |  |  |  | 6,000,000 |  | 29,000,000 | 7,000,000 |  |
Operation, maintenance and other |  |  |  |  |  |  |  |  |  | 1,388,000,000 |  | 1,379,000,000 | 1,475,000,000 |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | 677,000,000 |  | 1,000,000,000 |  |  |
Duke Energy Progress | Storm Recovery Bonds |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 177,000,000
Duke Energy Carolinas |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  |  |  |  | 31,000,000 |  | 44,000,000 | 26,000,000 |  |
Operation, maintenance and other |  |  |  |  |  |  |  |  |  | 1,740,000,000 |  | 1,774,000,000 | $ 1,892,000,000 |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | 1,000,000,000 |  | $ 2,650,000,000 |  |  |
2022 North Carolina Rate Case | NCUC | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proposed rate period (in years) |  |  |  | 3 years | 3 years |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease) amount by state commission |  |  |  |  |  |  |  |  |  |  | $ 233,000,000 |  |  |  |
Settlement amount |  |  | $ 12,200,000,000 |  |  |  |  |  |  |  |  |  |  |  |
MYRP period (in years) |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |
Approved return on equity (as a percent) |  |  | 9.80% |  |  |  |  |  |  |  |  |  |  |  |
Impairment of assets and other charges |  |  |  |  |  |  |  |  |  | 28,000,000 |  |  |  |  |
Operation, maintenance and other |  |  |  |  |  |  |  |  |  | $ 8,000,000 |  |  |  |  |
2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved return on equity (as a percent) |  |  | 53.00% |  |  |  |  |  |  |  |  |  |  |  |
2022 North Carolina Rate Case | NCUC | Duke Energy Progress | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease) amount by state commission |  |  |  |  |  |  | $ 494,000,000 | $ 135,000,000 | $ 126,000,000 |  |  |  |  |  |
2022 North Carolina Rate Case, Retail Allocated | NCUC | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Settlement amount |  |  | $ 3,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |
2022 South Carolina Rate Case | PSCSC | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease) amount by state commission |  |  |  |  |  | $ 52,000,000 |  |  |  |  |  |  |  |  |
2022 South Carolina Rate Case, Retail Rate Case | PSCSC | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved rate increase (decrease) amount by state commission |  |  |  |  |  | $ 36,000,000 |  |  |  |  |  |  |  |  |
Approved return on equity (as a percent) |  |  |  |  |  | 9.60% |  |  |  |  |  |  |  |  |
Deferred compliance costs period (in years) |  |  |  |  |  | 33 months |  |  |  |  |  |  |  |  |
2022 South Carolina Rate Case, Retail Rate Case | PSCSC | Duke Energy Progress | Equity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved return on equity (as a percent) |  |  |  |  |  | 52.43% |  |  |  |  |  |  |  |  |
2022 South Carolina Rate Case, Coal Ash Basin Closure Costs | PSCSC | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred compliance costs period (in years) |  |  |  |  |  | 7 years |  |  |  |  |  |  |  |  |
Deferred costs not recovering |  |  |  |  |  | $ 50,000,000 |  |  |  |  |  |  |  |  |
Person County Combined Cycle CPCN | NCUC | Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease) |  | $ 98,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Combined Cycle Plants, in Megawatts | MW |  | 1,360 |  |  |  |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), percent |  | 2.60% |  |  |  |  |  |  |  |  |  |  |  |  |
Person County Combined Cycle CPCN | NCUC | Duke Energy Progress | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease) | $ 113,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Combined Cycle Plants, in Megawatts | MW | 1,360 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Requested rate increase (decrease), percent | 2.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Person County Combined Cycle CPCN | NCUC | NCEMC | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Combined Cycle Plants, in Megawatts | MW |  |  |  |  |  |  |  |  |  |  |  |  |  | 225 |
Person County Combined Cycle CPCN | NCUC | NCEMC | Forecast | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Combined Cycle Plants, in Megawatts | MW | 225 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Person County Combined Cycle CPCN | NCEMC | Duke Energy Progress | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Combined Cycle Plants, in Megawatts | MW |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,135 |

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