Condensed Consolidated Statements of Changes in Equity - Duke Energy Carolinas - USD ($) $ in Millions	Total	Duke Energy Carolinas	Duke Energy Carolinas Member's Equity	Duke Energy Carolinas Net Losses on Cash Flow Hedges
Beginning balance at Dec. 31, 2021		$ 13,891	$ 13,897	$ (6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,550	1,600	1,600
Distributions to parent	(3,073)	(50)	(50)
Other	3	1	1
Ending balance at Dec. 31, 2022		15,442	15,448	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,841	1,470	1,470
Distributions to parent	(3,138)
Other	(2)	(5)	(5)
Ending balance at Dec. 31, 2023		16,907	16,913	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,524	1,883	1,883
Distributions to parent	(3,204)	(950)	(950)
Other	$ (2)
Ending balance at Dec. 31, 2024		$ 17,840	$ 17,846	$ (6)