Condensed Consolidated Statements of Changes in Equity - Duke Energy Ohio - USD ($) $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Duke Energy Ohio	Duke Energy Ohio Common Stock	Duke Energy Ohio Additional Paid-in Capital	Duke Energy Ohio Retained Earnings
Beginning Balance (Attributable to Parent) at Dec. 31, 2022		$ 1	$ 44,862	$ 2,637	$ 4,766	$ 762	$ 3,100	$ 904
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 804				100			100
Ending Balance (Attributable to Parent) at Mar. 31, 2023		1	44,837	2,626	4,866	762	3,100	1,004
Beginning Balance (Attributable to Parent) at Dec. 31, 2023	49,112	1	44,920	2,235	5,100	762	3,100	1,238
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,138				94			94
Ending Balance (Attributable to Parent) at Mar. 31, 2024	$ 49,551	$ 1	$ 44,937	$ 2,542	$ 5,194	$ 762	$ 3,100	$ 1,332