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 Accumulated Other Comprehensive (Loss) Income, Net (Losses) Gains on Cash Flow Hedges
Beginning Balance (member's equity) at Dec. 31, 2020		$ 13,154	$ 13,161	$ (7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	$ 3,162	1,070	1,070
Common stock dividends	(2,248)	(600)	(600)
Other	1
Ending Balance (member's equity) at Sep. 30, 2021		13,624	13,631	(7)
Beginning Balance (member's equity) at Jun. 30, 2021		13,392	13,399	(7)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	1,405	533	533
Common stock dividends	(760)	(300)	(300)
Other	1	(1)	(1)
Ending Balance (member's equity) at Sep. 30, 2021		13,624	13,631	(7)
Beginning Balance (member's equity) at Dec. 31, 2021		13,891	13,897	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	3,186	1,292	1,292
Common stock dividends	(2,297)	(50)	(50)
Other	3
Ending Balance (member's equity) at Sep. 30, 2022		15,133	15,139	(6)
Beginning Balance (member's equity) at Jun. 30, 2022		14,509	14,515	(6)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income Attributable to Duke Energy Corporation	1,422	624	624
Common stock dividends	(776)
Other	$ 2
Ending Balance (member's equity) at Sep. 30, 2022		$ 15,133	$ 15,139	$ (6)