Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Class of Stock [Line Items]
Net Income Available to Duke Energy Corporation Common Stockholders	$ 765	$ 818
Accumulated preferred stock dividends adjustment	12	12
Less: Impact of participating securities	1	1
Income from continuing operations available to Duke Energy common stockholders	921	817
Loss from discontinued operations, net of tax	(209)	(15)
Add: Net loss attributable to noncontrolling interest included in discontinued operations	64	27
Discontinued operations	$ (145)	$ 12
Weighted average common shares outstanding – basic (in shares)	770	770
Weighted average common shares outstanding – diluted (in shares)	770	770
Basic (in usd per share)	$ 1.20	$ 1.06
Diluted (in usd per share)	1.20	1.06
EPS from continuing operations available to Duke Energy common stockholders
Basic (usd per share)	(0.19)	0.02
Diluted (usd per share)	$ (0.19)	$ 0.02
Potentially dilutive items excluded from the calculation (in shares)	2	2
Common Stock
EPS from continuing operations available to Duke Energy common stockholders
Dividends declared per common share (in usd per share)	$ 1.005	$ 0.985
Preferred stock, Series A
EPS from continuing operations available to Duke Energy common stockholders
Dividends declared on preferred stock per depositary share (in usd per share)	$ 0.359	0.359
Cumulative dividend rate per annum	5.75%
Liquidation preference per share (in usd per share)	$ 25
Preferred stock, Series B
EPS from continuing operations available to Duke Energy common stockholders
Dividends declared on preferred stock per depositary share (in usd per share)	$ 24.375	$ 24.375
Cumulative dividend rate per annum	4.875%
Liquidation preference per share (in usd per share)	$ 1,000