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, 2021		$ 1	$ 44,371	$ 3,265	$ 4,464	$ 762	$ 3,100	$ 602
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550				302			302
Other	3		1	1
Ending 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)	2,841				334			334
Other	(2)		(7)	1
Ending 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)	4,524				341			341
Other	(2)			(2)	18		18
Ending Balance (Attributable to Parent) at Dec. 31, 2024	$ 50,127	$ 1	$ 45,494	$ 3,431	$ 5,459	$ 762	$ 3,118	$ 1,579