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Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) Mcf in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) GWh Mcf | Dec. 31, 2021 USD ($) GWh Mcf
Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 3,479 | $ 3,592
Interest Rate Contracts | Designated contracts | Cash flow hedges |  |
Derivative [Line Items] |  |
Pay Notional | 500 | 2,415
Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 2,979 | $ 1,177
Commodity contracts | Electricity (GWh) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, in gigawatt-hours | GWh | 14,086 | 12,369
Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume in millions of dekatherms | Mcf | 909 | 823
Duke Energy Carolinas | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,250 | $ 350
Duke Energy Carolinas | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,250 | $ 350
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume in millions of dekatherms | Mcf | 307 | 264
Progress Energy | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 800 | $ 500
Progress Energy | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 800 | $ 500
Progress Energy | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume in millions of dekatherms | Mcf | 292 | 215
Duke Energy Progress | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 500 | $ 500
Duke Energy Progress | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 500 | $ 500
Duke Energy Progress | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume in millions of dekatherms | Mcf | 292 | 215
Duke Energy Florida | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 300 |
Duke Energy Florida | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | 300 |
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, in gigawatt-hours | GWh | 1,820 | 1,681
Duke Energy Indiana | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 300 | $ 300
Duke Energy Indiana | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 300 | $ 300
Duke Energy Indiana | Commodity contracts | Electricity (GWh) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, in gigawatt-hours | GWh | 12,266 | 10,688
Duke Energy Indiana | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume in millions of dekatherms | Mcf | 11 | 8
Piedmont | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, volume in millions of dekatherms | Mcf | 299 | 336

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