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Derivatives and Hedging (Notional Amounts of Derivative Instruments) (Details) dth in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($) GWh dth | Dec. 31, 2024 USD ($) GWh dth
Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 5,577 | $ 6,027
Interest Rate Contracts | Designated contracts | Cash flow hedges |  |
Derivative [Line Items] |  |
Pay Notional | 1,725 | 2,825
Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 3,852 | $ 3,202
Commodity contracts | Electricity (GWh) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | GWh | 10,615 | 12,229
Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | dth | 814 | 779
Duke Energy Carolinas | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 2,175 | $ 1,150
Duke Energy Carolinas | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 2,175 | $ 1,150
Duke Energy Carolinas | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | dth | 307 | 276
Progress Energy | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,325 | $ 1,775
Progress Energy | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 1,325 | $ 1,775
Progress Energy | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | dth | 286 | 246
Duke Energy Progress | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 650 | $ 1,125
Duke Energy Progress | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 650 | $ 1,125
Duke Energy Progress | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | dth | 286 | 246
Duke Energy Florida | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 675 | $ 650
Duke Energy Florida | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | 675 | 650
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 | 1,349 | 1,287
Duke Energy Indiana | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 325 | $ 250
Duke Energy Indiana | Interest Rate Contracts | Undesignated contracts |  |
Derivative [Line Items] |  |
Pay Notional | $ 325 | $ 250
Duke Energy Indiana | Commodity contracts | Electricity (GWh) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | GWh | 9,266 | 10,942
Duke Energy Indiana | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | dth | 33 | 32
Piedmont | Commodity contracts | Natural gas (millions of Dth) |  |
Derivative [Line Items] |  |
Notional amount, energy measure, electricity (in GWh) | dth | 188 | 225

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