Condensed Consolidated Statements of Changes in Equity - Duke Energy Indiana - USD ($) $ in Millions	Total	Duke Energy Indiana	Duke Energy Indiana Member's Equity
Beginning Balance (member's equity) at Dec. 31, 2020			$ 4,783
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	$ 3,162	$ 396	396
Distributions to parent	(2,248)		(125)
Other	1		1
Ending Balance (member's equity) at Sep. 30, 2021			5,055
Beginning Balance (member's equity) at Jun. 30, 2021			4,999
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	1,405	181	181
Distributions to parent	(760)		(125)
Other	1
Ending Balance (member's equity) at Sep. 30, 2021			5,055
Beginning Balance (member's equity) at Dec. 31, 2021		5,015	5,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	3,186	189	189
Distributions to parent	(2,297)		(225)
Other	3
Ending Balance (member's equity) at Sep. 30, 2022		4,979	4,979
Beginning Balance (member's equity) at Jun. 30, 2022			4,861
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	1,422	119	119
Distributions to parent	(776)
Other	$ 2		(1)
Ending Balance (member's equity) at Sep. 30, 2022		$ 4,979	$ 4,979