Condensed Consolidated Statements of Changes in Equity - Duke Energy Indiana - USD ($) $ in Millions	Total	Duke Energy Indiana	Duke Energy Indiana Member's Equity	Duke Energy Indiana Pension and OPEB Adjustments
Beginning balance at Dec. 31, 2021		$ 5,015	$ 5,015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550	137	137
Distributions to parent	(3,073)	(450)	(450)
Other	3	1		$ 1
Ending balance at Dec. 31, 2022		4,703	4,702	1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,841	497	497
Distributions to parent	(3,138)	(187)	(187)
Other	(2)
Ending balance at Dec. 31, 2023		5,013	5,012	1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,524	441	441
Distributions to parent	(3,204)	(160)	(160)
Other	$ (2)	(3)	(2)	(1)
Contribution from parent		235	235
Ending balance at Dec. 31, 2024		$ 5,526	$ 5,526	$ 0