Dispositions (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ (955)	$ (18)	$ (1,164)	$ (33)
Add: Net loss attributable to noncontrolling interest included in discontinued operations	7	45	71	72
Net (loss) income from discontinued operations attributable to Duke Energy Corporation	(948)	27	(1,093)	39
Discontinued Operations, Held-for-sale | Commercial Renewables
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenues	110	122	190	243
Operation, maintenance and other	88	82	177	163
Depreciation and amortization	0	64	0	128
Property and other taxes	9	11	19	21
Other income and expenses, net	(3)	(3)	(7)	(3)
Interest expense	12	18	43	37
Loss on disposal	1,214	0	1,434	0
Loss before income taxes	(1,216)	(56)	(1,490)	(109)
Income tax benefit	(261)	(38)	(326)	(76)
Loss from discontinued operations	(955)	(18)	(1,164)	(33)
Add: Net loss attributable to noncontrolling interest included in discontinued operations	7	45	71	72
Net (loss) income from discontinued operations attributable to Duke Energy Corporation	$ (948)	$ 27	$ (1,093)	$ 39