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Property, Plant and Equipment (Schedule of Capitalized Interest) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | $ 201 | $ 201 | $ 118
Duke Energy Carolinas |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | 61 | 62 | 50
Progress Energy |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | 57 | 41 | 26
Duke Energy Progress |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | 52 | 35 | 19
Duke Energy Florida |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | 5 | 6 | 7
Duke Energy Ohio |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | 14 | 16 | 14
Duke Energy Indiana |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | 13 | 21 |
PISCC amortization |  |  | (3)
Piedmont |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Capitalized interest | $ 8 | $ 8 | $ 4

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