Dispositions (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ (3)	$ (209)
Add: Net loss attributable to noncontrolling interest included in discontinued operations	0	64
Net loss from discontinued operations attributable to Duke Energy Corporation	(3)	(145)
Discontinued Operations, Held-for-sale | Commercial Renewables
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenues	(6)	80
Operation, maintenance and other	4	89
Property and other taxes	0	10
Other income and expenses, net	0	(4)
Interest expense	2	31
(Gain) Loss on disposal	(10)	220
Loss before income taxes	(2)	(274)
Income tax expense (benefit)	1	(65)
Loss from discontinued operations	(3)	(209)
Add: Net loss attributable to noncontrolling interest included in discontinued operations	0	64
Net loss from discontinued operations attributable to Duke Energy Corporation	$ (3)	$ (145)