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Derivatives and Hedging (Schedule of Offsetting Liabilities) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | $ 603 | $ 437
Net amounts presented in Current Liabilities: Other | 235 | 144
Net amounts presented in Current Liabilities: Other | 238 | 185
Current liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 282 | 193
Gross amounts offset | $ (47) | $ (49)
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] | Current Liabilities: Other | Current Liabilities: Other
Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | $ 321 | $ 244
Gross amounts offset | $ (83) | $ (59)
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other | Other
Duke Energy Carolinas |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | $ 201 | $ 127
Net amounts presented in Current Liabilities: Other | 123 | 81
Net amounts presented in Current Liabilities: Other | 15 | 2
Duke Energy Carolinas | Current liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 143 | 96
Gross amounts offset | (20) | (15)
Duke Energy Carolinas | Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 58 | 31
Gross amounts offset | (43) | (29)
Progress Energy |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 153 | 66
Net amounts presented in Current Liabilities: Other | 82 | 18
Net amounts presented in Current Liabilities: Other | 23 |
Progress Energy | Current liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 90 | 36
Gross amounts offset | (8) | (18)
Progress Energy | Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 63 | 30
Gross amounts offset | (40) | (30)
Duke Energy Progress |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 149 | 48
Net amounts presented in Current Liabilities: Other | 82 |
Net amounts presented in Current Liabilities: Other | 19 |
Duke Energy Progress | Current liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 90 | 18
Gross amounts offset | (8) | (18)
Duke Energy Progress | Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 59 | 30
Gross amounts offset | (40) | (30)
Duke Energy Florida |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 3 | 19
Net amounts presented in Current Liabilities: Other |  | 19
Net amounts presented in Current Liabilities: Other | 3 |
Duke Energy Florida | Current liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized |  | 19
Duke Energy Florida | Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 3 |
Duke Energy Ohio |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 1 | 2
Net amounts presented in Current Liabilities: Other | 1 | 2
Duke Energy Ohio | Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 1 | 2
Duke Energy Indiana |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 28 | 16
Net amounts presented in Current Liabilities: Other | 9 |
Duke Energy Indiana | Current liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 19 | 16
Gross amounts offset | (19) | (16)
Duke Energy Indiana | Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 9 |
Piedmont |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 144 | 168
Net amounts presented in Current Liabilities: Other | 12 | 27
Net amounts presented in Current Liabilities: Other | 132 | 141
Piedmont | Current liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | 12 | 27
Piedmont | Noncurrent liabilities |  |
Offsetting Derivative Liabilities [Abstract] |  |
Gross amounts recognized | $ 132 | $ 141

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