Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Net income (loss)		$ 820	$ 941
Other Comprehensive Income (Loss), net of tax
Pension and OPEB adjustments	[1]	2	2
Net unrealized gains on cash flow hedges	[1]	113	29
Reclassification into earnings from cash flow hedges	[1]	5	3
Unrealized losses on available-for-sale securities	[1]	(13)	(8)
Other Comprehensive Income, net of tax	[1]	107	26
Comprehensive Income		927	967
Add: Comprehensive Loss Attributable to Noncontrolling Interests		29	44
Comprehensive Income Attributable to Duke Energy		956	1,011
Less: Preferred Dividends		39	39
Comprehensive Income Available to Duke Energy Corporation Common Stockholders		$ 917	$ 972

[1] Net of income tax impacts of approximately $32 million and $8 million for the three months ended March 31, 2022, and 2021, respectively.