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Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) GWh Mcf | Dec. 31, 2023 USD ($) GWh Mcf
Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 6,027 | $ 5,027
Interest Rate Contracts | Designated contracts | Cash flow hedges |  |
Derivative [Line Items] |  |
Pay Notional | 2,825 | 2,300
Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 3,202 | $ 2,727
Commodity contracts | Electricity (GWh) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | GWh | 12,229 | 13,608
Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume of natural gas (in millions of Dth) | Mcf | 779 | 846
Duke Energy Carolinas | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,150 | $ 1,050
Duke Energy Carolinas | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,150 | $ 1,050
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume of natural gas (in millions of Dth) | Mcf | 276 | 279
Progress Energy | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,775 | $ 1,250
Progress Energy | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,775 | $ 1,250
Progress Energy | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume of natural gas (in millions of Dth) | Mcf | 246 | 274
Duke Energy Progress | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,125 | $ 925
Duke Energy Progress | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,125 | $ 925
Duke Energy Progress | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume of natural gas (in millions of Dth) | Mcf | 246 | 274
Duke Energy Florida | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 650 | $ 325
Duke Energy Florida | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | 650 | 325
Duke Energy Ohio | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | 27 | 27
Duke Energy Ohio | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 27 | $ 27
Duke Energy Ohio | Commodity contracts | Electricity (GWh) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | GWh | 1,287 | 1,616
Duke Energy Indiana | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 250 | $ 400
Duke Energy Indiana | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 250 | $ 400
Duke Energy Indiana | Commodity contracts | Electricity (GWh) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | GWh | 10,942 | 11,992
Duke Energy Indiana | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume of natural gas (in millions of Dth) | Mcf | 32 | 30
Piedmont | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume of natural gas (in millions of Dth) | Mcf | 225 | 263

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