Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Class of Stock [Line Items]
Net Income Available to Duke Energy Corporation Common Stockholders	$ 1,213	$ 1,383	$ 1,744	$ 3,094
Accumulated preferred stock dividends adjustment	12	12	12	12
Less: Impact of participating securities	2	1	4	2
Income from continuing operations available to Duke Energy common stockholders	1,413	1,371	3,035	3,042
(Loss) Income from discontinued operations, net of tax	(152)	3	(1,316)	(30)
Add: Net (income) loss attributable to noncontrolling interest included in discontinued operations	(38)	20	33	92
Discontinued operations	$ (190)	$ 23	$ (1,283)	$ 62
Weighted average common shares outstanding – basic (in shares)	771	770	771	770
Weighted average common shares outstanding – diluted (in shares)	771	770	771	770
Basic (in usd per share)	$ 1.83	$ 1.78	$ 3.94	$ 3.95
Diluted (in usd per share)	1.83	1.78	3.94	3.95
EPS from continuing operations available to Duke Energy common stockholders
Basic (usd per share)	(0.24)	0.03	(1.67)	0.08
Diluted (usd per share)	$ (0.24)	$ 0.03	$ (1.67)	$ 0.08
Potentially dilutive items excluded from the calculation (in shares)	2	2	2	2
Common Stock
EPS from continuing operations available to Duke Energy common stockholders
Dividends declared per common share (in usd per share)	$ 1.025	$ 1.005	$ 3.035	$ 2.975
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	$ 1.078	1.078
Cumulative dividend rate per annum			5.75%
Liquidation preference per share (in usd per share)	25		$ 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	$ 48.750	$ 48.750
Cumulative dividend rate per annum			4.875%
Liquidation preference per share (in usd per share)	$ 1,000		$ 1,000