Quarterly Financial Data (Unaudited) (Schedule of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended								12 Months Ended
	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
Quarterly Financial Information Disclosure [Abstract]
Operating revenues	$ 7,212	$ 7,994	$ 6,578	$ 7,276	$ 7,351	$ 7,842	$ 6,564	$ 7,011	$ 29,060	$ 28,768	$ 24,621
Operating income (loss)	1,855	2,111	1,430	1,674	1,194	2,056	1,448	1,314	7,070	6,012	5,500
Income (loss) from continuing operations	1,135	1,473	751	970	635	1,410	898	835	4,329	3,778	3,723
(Loss) Income from discontinued operations, net of tax	(139)	(152)	(955)	(209)	(1,293)	3	(18)	(15)	(1,455)	(1,323)	(144)
Net income (loss)	996	1,321	(204)	761	(658)	1,413	880	820	2,874	2,455	3,579
Net Income available to Duke Energy common stockholders	$ 991	$ 1,213	$ (234)	$ 765	$ (650)	$ 1,383	$ 893	$ 818	$ 2,735	$ 2,444	$ 3,802
Income from continuing operations available to Duke Energy Corporation 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 from discontinued operations attributable to Duke Energy Corporation common stockholders
Basic (usd per share)	(0.14)	(0.24)	(1.23)	(0.19)	(1.66)	0.03	0.03	0.02	(1.81)	(1.57)	0.26
Diluted (usd per share)	(0.14)	(0.24)	(1.23)	(0.19)	(1.66)	0.03	0.03	0.02	(1.81)	(1.57)	0.26
Net income available to Duke Energy Corporation common stockholders
Basic (usd per share)	1.27	1.59	(0.32)	1.01	(0.86)	1.81	1.14	1.08	3.54	3.17	4.94
Diluted (usd per share)	$ 1.27	$ 1.59	$ (0.32)	$ 1.01	$ (0.86)	$ 1.81	$ 1.14	$ 1.08	$ 3.54	$ 3.17	$ 4.94