Dispositions (Income Statement) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax benefit									$ (503)	$ (76)	$ (65)
Loss from discontinued operations	$ (1,293)	$ 3	$ (18)	$ (15)	$ (36)	$ (57)	$ (25)	$ (26)	(1,323)	(144)	(7)
Add: Net loss attributable to noncontrolling interest included in discontinued operations									108	344	296
Net income from discontinued operations attributable to Duke Energy Corporation									(1,215)	200	289
Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations									(1,323)	(144)	(7)
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									465	476	502
Operation, maintenance and other									337	343	292
Depreciation and amortization									201	227	200
Property and other taxes									36	34	26
Other income and expenses, net									2	(27)	1
Interest expense									10	72	66
Loss on disposal									1,748	0	0
Loss before income taxes									(1,865)	(227)	(81)
Income tax benefit									(516)	(76)	(67)
Loss from discontinued operations									(1,349)	(151)	(14)
Add: Net loss attributable to noncontrolling interest included in discontinued operations									108	344	296
Net income from discontinued operations attributable to Duke Energy Corporation									$ (1,241)	$ 193	$ 282