Quarterly Financial Data (Unaudited) (Schedule of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ 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
Quarterly Financial Information Disclosure [Abstract]
Operating revenues	$ 7,351	$ 7,842	$ 6,564	$ 7,011	$ 6,117	$ 6,834	$ 5,638	$ 6,032	$ 28,768	$ 24,621	$ 23,366
Operating income (loss)	1,194	2,056	1,448	1,314	1,110	1,726	1,198	1,466	6,012	5,500	4,571
Income (loss) from continuing operations	635	1,410	898	835	700	1,333	723	967	3,778	3,723	1,089
(Loss) Income from discontinued operations, net of tax	(1,293)	3	(18)	(15)	(36)	(57)	(25)	(26)	(1,323)	(144)	(7)
Net income (loss)	(658)	1,413	880	820	664	1,276	698	941	2,455	3,579	1,082
Net Income available to Duke Energy common stockholders	$ (650)	$ 1,383	$ 893	$ 818	$ 732	$ 1,366	$ 751	$ 953	$ 2,444	$ 3,802	$ 1,270
Income (loss) from continuing operations attributable to Duke Energy Corporation common shareholders [Abstract]
Basic (usd per share)	$ 0.80	$ 1.78	$ 1.11	$ 1.06	$ 0.86	$ 1.69	$ 0.90	$ 1.22	$ 4.74	$ 4.68	$ 1.33
Diluted (usd per share)	0.80	1.78	1.11	1.06	0.86	1.69	0.90	1.22	4.74	4.68	1.33
Income (loss) from discontinued operations attributable to Duke Energy Corporation common shareholders [Abstract]
Basic (usd per share)	(1.66)	0.03	0.03	0.02	0.07	0.10	0.06	0.03	(1.57)	0.26	0.39
Diluted (usd per share)	(1.66)	0.03	0.03	0.02	0.07	0.10	0.06	0.03	(1.57)	0.26	0.39
Net income available to Duke Energy Corporation common stockholders
Basic (usd per share)	(0.86)	1.81	1.14	1.08	0.93	1.79	0.96	1.25	3.17	4.94	1.72
Diluted (usd per share)	$ (0.86)	$ 1.81	$ 1.14	$ 1.08	$ 0.93	$ 1.79	$ 0.96	$ 1.25	$ 3.17	$ 4.94	$ 1.72