Derivatives and Hedging (Schedule of Offsetting Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 434	$ 189
Net amounts presented in Current Assets: Other	238	59
Net amounts presented in Other Noncurrent Assets: Other	130	91
Foreign Currency Contracts
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	5	44
Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	267	61
Offset	$ (29)	$ (2)
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Current Assets: Other	Current Assets: Other
Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 167	$ 128
Offset	$ (37)	$ (37)
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other (including amounts related to VIEs)	Other (including amounts related to VIEs)
Noncurrent assets \| Foreign Currency Contracts
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 5
Duke Energy Carolinas
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	94	$ 35
Net amounts presented in Current Assets: Other	24	5
Net amounts presented in Other Noncurrent Assets: Other	36	15
Duke Energy Carolinas \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	39	6
Offset	(15)	(1)
Duke Energy Carolinas \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	55	29
Offset	(19)	(14)
Progress Energy
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	127	34
Net amounts presented in Current Assets: Other	58	2
Net amounts presented in Other Noncurrent Assets: Other	38	9
Progress Energy \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	72	3
Offset	(14)	(1)
Progress Energy \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	55	31
Offset	(17)	(22)
Duke Energy Progress
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	109	32
Net amounts presented in Current Assets: Other	47
Net amounts presented in Other Noncurrent Assets: Other	31	9
Duke Energy Progress \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	61	1
Offset	(14)	(1)
Duke Energy Progress \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	48	31
Offset	(17)	(22)
Duke Energy Florida
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	18	2
Net amounts presented in Current Assets: Other	11	2
Net amounts presented in Other Noncurrent Assets: Other	7
Duke Energy Florida \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	11	2
Duke Energy Florida \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	7
Duke Energy Ohio
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	1	1
Net amounts presented in Current Assets: Other	1	1
Duke Energy Ohio \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	1	1
Duke Energy Indiana
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	44	25
Net amounts presented in Current Assets: Other	44	18
Net amounts presented in Other Noncurrent Assets: Other		7
Duke Energy Indiana \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	44	18
Duke Energy Indiana \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized		7
Piedmont
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	1	1
Net amounts presented in Current Assets: Other	1	1
Piedmont \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 1	$ 1

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