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Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 4,154 | $ 3,387
Other |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 854 |
Duke Energy (Parent) | Debt Maturing April 2023, 2.875% Coupon | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 2.875% |
Current maturities of long-term debt | $ 350 |
Duke Energy (Parent) | Debt Maturing June 2023, 1.938% Coupon | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.469% |
Current maturities of long-term debt | $ 500 |
Duke Energy (Parent) | Debt Maturing October 2023, 3.950% Coupon | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.95% |
Current maturities of long-term debt | $ 400 |
Duke Energy Ohio |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 475 |
Duke Energy Ohio | Debt Maturing October 2023, 2.750% Coupon | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 4.272% |
Current maturities of long-term debt | $ 150 |
Duke Energy Ohio | Debt Maturing September 2023, 3.800% Coupon | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.80% |
Current maturities of long-term debt | $ 300 |
Duke Energy Indiana |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 303 | 84
Duke Energy Indiana | Debt Maturing October 2023, -% Coupon | Unsecured Debt |  |
Debt Instrument [Line Items] |  |
Interest Rate | 4.118% |
Current maturities of long-term debt | $ 300 |
Duke Energy Carolinas |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 1,018 | 362
Duke Energy Carolinas | Debt Maturing March 2023, 2.500% Coupon | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 2.50% |
Current maturities of long-term debt | $ 500 |
Duke Energy Carolinas | Debt Maturing March 2023, 3.050% Coupon | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.05% |
Current maturities of long-term debt | $ 500 |
Duke Energy Progress |  |
Debt Instrument [Line Items] |  |
Current maturities of long-term debt | $ 369 | $ 556
Duke Energy Progress | Debt Maturing September 2023, 3.375% Coupon | First Mortgage Bonds |  |
Debt Instrument [Line Items] |  |
Interest Rate | 3.375% |
Current maturities of long-term debt | $ 300 |

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