Condensed Consolidated Statements of Changes in Equity - Duke Energy Ohio - USD ($) $ in Millions	Total	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 (parent) at Dec. 31, 2020				$ 3,935	$ 762	$ 2,776	$ 397
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	$ 3,162			188			188
Other	1	$ (1)	$ 0
Ending Balance (parent) at Sep. 30, 2021				4,123	762	2,776	585
Beginning Balance (parent) at Jun. 30, 2021				4,065	762	2,776	527
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	1,405			58			58
Other	1	(2)
Ending Balance (parent) at Sep. 30, 2021				4,123	762	2,776	585
Beginning Balance (parent) at Dec. 31, 2021	49,296			4,464	762	3,100	602
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	3,186			236			236
Other	3	2	1	1			1
Ending Balance (parent) at Sep. 30, 2022	50,345			4,701	762	3,100	839
Beginning Balance (parent) at Jun. 30, 2022				4,597	762	3,100	735
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	1,422			103			103
Other	2	$ 3	$ (1)	1			1
Ending Balance (parent) at Sep. 30, 2022	$ 50,345			$ 4,701	$ 762	$ 3,100	$ 839