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Debt and Credit Facilities (Short Term Obligations Classified As Long Term) (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | $ 937 | $ 937
Tax-exempt bonds |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 312 | 312
Commercial Paper |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 625 | 625
Duke Energy Carolinas |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 300 | 300
Duke Energy Carolinas | Tax-exempt bonds |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt |  | 0
Duke Energy Carolinas | Commercial Paper |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 300 | 300
Duke Energy Progress |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 150 | 150
Duke Energy Progress | Tax-exempt bonds |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt |  | 0
Duke Energy Progress | Commercial Paper |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 150 | 150
Duke Energy Ohio |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 52 | 52
Duke Energy Ohio | Tax-exempt bonds |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 27 | 27
Duke Energy Ohio | Commercial Paper |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 25 | 25
Duke Energy Indiana |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 435 | 435
Duke Energy Indiana | Tax-exempt bonds |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | 285 | 285
Duke Energy Indiana | Commercial Paper |  |
Debt Instrument [Line Items] |  |
Short term obligations classified as long-term debt | $ 150 | $ 150

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