Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions		Total		Preferred Stock	Common Stockholders' Equity	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, Net (Losses) Gains on Cash Flow Hedges	Accumulated Other Comprehensive (Loss) Income, Net Unrealized (Losses) Gains on Available-for-Sale-Securities	Accumulated Other Comprehensive (Loss) Income, Pension and OPEB Adjustments	Noncontrolling Interests	Duke Energy Carolinas	Duke Energy Carolinas Member's Equity	Duke Energy Carolinas Accumulated Other Comprehensive (Loss) Income, Net (Losses) Gains on Cash Flow Hedges	Progress Energy	Progress Energy Common Stockholders' Equity	Progress Energy Additional Paid-in Capital	Progress Energy Retained Earnings	Progress Energy Accumulated Other Comprehensive (Loss) Income, Net (Losses) Gains on Cash Flow Hedges	Progress Energy Accumulated Other Comprehensive (Loss) Income, Net Unrealized (Losses) Gains on Available-for-Sale-Securities	Progress Energy Accumulated Other Comprehensive (Loss) Income, Pension and OPEB Adjustments	Progress Energy Noncontrolling Interests	Duke Energy Progress	Duke Energy Progress Member's Equity	Duke Energy Florida	Duke Energy Florida Member's Equity	Duke Energy Florida Accumulated Other Comprehensive (Loss) Income, Net Unrealized (Losses) Gains on Available-for-Sale-Securities	Duke Energy Ohio	Duke Energy Ohio Common Stock	Duke Energy Ohio Additional Paid-in Capital	Duke Energy Ohio Retained Earnings	Duke Energy Indiana	Duke Energy Indiana Member's Equity	Piedmont	Piedmont Common Stock	Piedmont Retained Earnings	Common Stock	Common Stock Common Stockholders' Equity	Common Stock Common Stock	Common Stock Additional Paid-in Capital
Beginning Balance at Dec. 31, 2020		$ 49,184		$ 1,962	$ 47,964	$ 43,767	$ 2,471	$ (167)	$ 6	$ (76)	$ 1,220				$ 16,241	$ 16,237	$ 9,143	$ 7,109	$ (5)	$ (2)	$ (8)	$ 4																	$ 1
Beginning Balance, in shares at Dec. 31, 2020																																							769,000,000
Beginning Balance (member's equity) at Dec. 31, 2020												$ 13,154	$ 13,161	$ (7)										$ 9,260	$ 7,558	$ 7,560	$ (2)						$ 4,783
Beginning Balance (parent) at Dec. 31, 2020																												$ 3,935	$ 762	$ 2,776	$ 397			$ 2,715	$ 1,310	$ 1,405
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		902			953		953				(51)
Net income (loss)		992										312	312										$ 210	210	117	117		91			91	$ 112	112	203		203
Net income		941													290	290		290
Other comprehensive income (loss)		26	[1]		19			25	(8)	2	7								1	(1)					(1)		(1)
Common stock issuances, including dividend reinvestment and employee benefits																																					$ (3)	$ (3)		$ (3)
Common stock dividends		(744)			(744)		(744)
Contributions from noncontrolling interests, net of transaction costs	[2]	300			(3)	(3)					303
Distributions to noncontrolling interest in subsidiaries		(7)									(7)				(1)							(1)
Other																1		1				(1)											1
Contribution from parent																																		325	325
Ending Balance at Mar. 31, 2021		49,658		1,962	48,186	43,761	2,680	(142)	(2)	(74)	1,472				16,530	16,528	9,143	7,400	(4)	(3)	(8)	2																	$ 1
Ending Balance (member's equity) at Mar. 31, 2021												13,466	13,473	(7)										9,470	7,674	7,677	(3)						4,896
Ending Balance, in shares at Mar. 31, 2021																																							769,000,000
Ending Balance (parent) at Mar. 31, 2021																												$ 4,026	762	2,776	488			$ 3,243	1,635	1,608
Beginning Balance at Dec. 31, 2021		$ 51,136		1,962	49,296	44,371	3,265	(232)	(2)	(69)	1,840				$ 17,148	17,145	9,149	8,007	(2)	(2)	(7)	3																	$ 1
Beginning Balance, in shares at Dec. 31, 2021		769,000,000													100													90,000,000						100,000,000					769,000,000
Beginning Balance (member's equity) at Dec. 31, 2021												13,891	13,897	(6)									9,551	9,551	8,295	8,298	(3)					5,015	5,015
Beginning Balance (parent) at Dec. 31, 2021		$ 49,296													$ 17,145													$ 4,464	762	3,100	602			$ 3,349	1,635	1,714
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)		781			818		818				(37)
Net income (loss)		857										340	340										215	215	171	171		77			77	(79)	(79)	$ 214		214
Net income		820													354	354		354
Other comprehensive income (loss)		107	[1]		99			110	(13)	2	8				(1)	(1)			1	(2)					(1)		(1)
Common stock issuances, including dividend reinvestment and employee benefits																																					$ (7)	$ (7)	$ 1	$ (7)
Common stock dividends		(760)			(760)		(760)					(50)	(50)		(250)	(250)		(250)						(250)									(113)
Equitization of certain notes payable to affiliates															2,431	2,431		2,431
Contributions from noncontrolling interests, net of transaction costs	[2]	23									23
Distributions to noncontrolling interest in subsidiaries		(28)									(28)				(1)							(1)
Other												1	1		1	1		1						1				$ 1			1		1
Ending Balance at Mar. 31, 2022		$ 51,252		$ 1,962	$ 49,446	$ 44,364	$ 3,323	$ (122)	$ (15)	$ (67)	$ 1,806				$ 19,682	$ 19,680	$ 9,149	$ 10,543	$ (1)	$ (4)	$ (7)	$ 2																	$ 1
Ending Balance (member's equity) at Mar. 31, 2022												$ 14,182	$ 14,188	$ (6)									$ 9,517	$ 9,517	$ 8,465	$ 8,469	$ (4)					$ 4,824	$ 4,824
Ending Balance, in shares at Mar. 31, 2022		770,000,000													100													90,000,000						100,000,000					770,000,000
Ending Balance (parent) at Mar. 31, 2022		$ 49,446													$ 19,680													$ 4,542	$ 762	$ 3,100	$ 680			$ 3,563	$ 1,635	$ 1,928

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

[2] Relates to tax equity financing activity in the Commercial Renewables segment.