Dispositions (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations	$ (209)	$ (15)
Add: Net loss attributable to noncontrolling interest included in discontinued operations	64	27
Net income from discontinued operations attributable to Duke Energy Corporation	(145)	12
Discontinued Operations, Held-for-sale | Commercial Renewables
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Operating revenues	80	121
Operation, maintenance and other	89	81
Depreciation and amortization	0	64
Property and other taxes	10	10
Other income and expenses, net	(4)	0
Interest expense	31	19
Loss on disposal	220	0
Loss before income taxes	(274)	(53)
Income tax benefit	(65)	(38)
Loss from discontinued operations	(209)	(15)
Add: Net loss attributable to noncontrolling interest included in discontinued operations	64	27
Net income from discontinued operations attributable to Duke Energy Corporation	$ (145)	$ 12