Stockholders' Equity (Earnings Per Share Data) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended								12 Months Ended
	Sep. 16, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Net Income available to Duke Energy common stockholders		$ 991	$ 1,213	$ (234)	$ 765	$ (650)	$ 1,383	$ 893	$ 818	$ 2,735	$ 2,444	$ 3,802
Net (loss) income from discontinued operations attributable to Duke Energy Corporation										(1,391)	(1,215)	200
Less: Impact of participating securities										6	2	3
Income from continuing operations available to Duke Energy common stockholders										4,120	3,657	3,599
Loss From Discontinued Operations, net of tax		$ (139)	$ (152)	$ (955)	$ (209)	$ (1,293)	$ 3	$ (18)	$ (15)	(1,455)	(1,323)	(144)
Add: Loss attributable to NCI										$ 64	$ 108	$ 344
Weighted average common shares outstanding – basic (in shares)										771	770	769
Weighted average common shares outstanding – diluted (in shares)										771	770	769
EPS from continuing operations available to Duke Energy common stockholders
Basic (usd per share)		$ 1.41	$ 1.83	$ 0.91	$ 1.20	$ 0.80	$ 1.78	$ 1.11	$ 1.06	$ 5.35	$ 4.74	$ 4.68
Diluted (usd per share)		1.41	$ 1.83	$ 0.91	$ 1.20	$ 0.80	$ 1.78	$ 1.11	$ 1.06	5.35	4.74	4.68
(Loss) Earnings Per Share from discontinued operations attributable to Duke Energy common stockholders
Basic (usd per share)										(1.81)	(1.57)	0.26
Diluted (usd per share)										$ (1.81)	$ (1.57)	$ 0.26
Potentially dilutive items excluded from the calculation (in shares)										2	2	2
Dividends declared per share (usd per share)										$ 4.06	$ 3.98	$ 3.90
Series A Preferred Stock
(Loss) Earnings Per Share from discontinued operations attributable to Duke Energy common stockholders
Dividends declared on preferred stock (usd per share)										$ 1.437	1.437	1.437
Cumulative annual dividend rate (as a percent)										5.75%
Liquidation preference per share (in usd per share)		25								$ 25
Series B Preferred Stock
(Loss) Earnings Per Share from discontinued operations attributable to Duke Energy common stockholders
Dividends declared on preferred stock (usd per share)										$ 48.750	$ 48.750	$ 48.750
Cumulative annual dividend rate (as a percent)										4.875%
Liquidation preference per share (in usd per share)		$ 1,000								$ 1,000
Series B Preferred Stock | Forecast
(Loss) Earnings Per Share from discontinued operations attributable to Duke Energy common stockholders
Cumulative annual dividend rate (as a percent)	3.388%