Derivatives and Hedging (Schedule of Offsetting Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 836	$ 320
Net amounts presented in Current Assets: Other	530	179
Net amounts presented in Other Noncurrent Assets: Other	145	93
Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	594	204
Gross amounts offset	$ (64)	$ (25)
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Current Assets: Other	Current Assets: Other
Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 242	$ 116
Gross amounts offset	$ (97)	$ (23)
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other (including amounts related to VIEs)	Other (including amounts related to VIEs)
Duke Energy Carolinas
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 330	$ 162
Net amounts presented in Current Assets: Other	193	83
Net amounts presented in Other Noncurrent Assets: Other	64	48
Duke Energy Carolinas \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	226	99
Gross amounts offset	(33)	(16)
Duke Energy Carolinas \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	104	63
Gross amounts offset	(40)	(15)
Progress Energy
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	248	124
Net amounts presented in Current Assets: Other	110	65
Net amounts presented in Other Noncurrent Assets: Other	51	42
Progress Energy \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	140	74
Gross amounts offset	(30)	(9)
Progress Energy \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	108	50
Gross amounts offset	(57)	(8)
Duke Energy Progress
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	230	124
Net amounts presented in Current Assets: Other	92	65
Net amounts presented in Other Noncurrent Assets: Other	51	42
Duke Energy Progress \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	122	74
Gross amounts offset	(30)	(9)
Duke Energy Progress \| Noncurrent assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	108	50
Gross amounts offset	(57)	(8)
Duke Energy Florida
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	17
Net amounts presented in Current Assets: Other	17
Duke Energy Florida \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	17
Duke Energy Ohio
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	5	2
Net amounts presented in Current Assets: Other	5	2
Duke Energy Ohio \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	5	2
Duke Energy Indiana
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	110	23
Net amounts presented in Current Assets: Other	110	23
Duke Energy Indiana \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized	$ 110	23
Piedmont
Offsetting Derivative Assets [Abstract]
Gross amounts recognized		3
Net amounts presented in Current Assets: Other		3
Piedmont \| Current Assets
Offsetting Derivative Assets [Abstract]
Gross amounts recognized		$ 3

Indicates line item in statement of financial position that includes derivative asset classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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