Dispositions (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax benefit									$ (359)	$ (503)	$ (76)
Loss from discontinued operations	$ (139)	$ (152)	$ (955)	$ (209)	$ (1,293)	$ 3	$ (18)	$ (15)	(1,455)	(1,323)	(144)
Add: Net loss attributable to noncontrolling interest included in discontinued operations									64	108	344
Net (loss) income from discontinued operations attributable to Duke Energy Corporation									(1,391)	(1,215)	200
Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations									(1,455)	(1,323)	(144)
Discontinued Operations, Held-for-sale | Commercial Renewables Disposal Groups
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenues									330	465	476
Operation, maintenance and other									302	337	343
Depreciation and amortization									0	201	227
Property and other taxes									45	36	34
Other income and expenses, net									(8)	2	(27)
Interest expense									65	10	72
Loss on disposal									1,725	1,748	0
Loss before income taxes									(1,815)	(1,865)	(227)
Income tax benefit									(358)	(516)	(76)
Loss from discontinued operations									(1,457)	(1,349)	(151)
Add: Net loss attributable to noncontrolling interest included in discontinued operations									64	108	344
Net (loss) income from discontinued operations attributable to Duke Energy Corporation									$ (1,393)	$ (1,241)	$ 193