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, 2020		$ 1	$ 43,767	$ 2,471	$ 3,935	$ 762	$ 2,776	$ 397
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 3,908				204			204
Contribution from parent					325		325
Other	(8)		(9)				(1)	1
Ending 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	49,322	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