Business Segments (Business Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Operating Revenues	$ 6,578	$ 6,564	$ 13,854	$ 13,575
Segment income (loss)	714	866	1,624	1,672
Less: Noncontrolling interests	(16)	27	27	64
Add: Preferred stock dividend	14	14	53	53
Discontinued operations	(948)	27	(1,093)	39
Net (Loss) Income	(204)	880	557	1,700
Segment assets	180,076		180,076		$ 178,086
Impairment of assets and other charges		(9)	8	206
Regulated electric	6,176	6,075	12,500	12,008
Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating Revenues	589	545	1,298	1,183
Segment income (loss)	71	56	171	133
Segment assets	11,791		11,791		$ 11,506
Regulated electric	465	401	939	813
Total Reportable Segments
Segment Reporting Information [Line Items]
Operating Revenues	6,569	6,556	13,838	13,560
Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	6,232	6,126	12,613	12,121
Impairment of assets and other charges				211
Regulated electric				46
Electric Utilities and Infrastructure | Duke Energy Supreme Court Ruling
Segment Reporting Information [Line Items]
Less: Noncontrolling interests				(20)
Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	337	430	1,225	1,439
Operating Segments | Total Reportable Segments
Segment Reporting Information [Line Items]
Operating Revenues	6,609	6,588	13,918	13,622
Segment income (loss)	875	993	1,953	1,970
Segment assets	171,368		171,368
Operating Segments | Total Reportable Segments | Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating Revenues	589	545	1,298	1,183
Segment income (loss)	72	56	173	135
Segment assets	11,794		11,794
Operating Segments | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	6,250	6,135	12,648	12,137
Segment income (loss)	850	974	1,641	1,697
Segment assets	154,983		154,983
Operating Segments | Electric Utilities and Infrastructure | Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating Revenues	465	401	939	813
Segment income (loss)	54	37	103	78
Segment assets	7,683		7,683
Operating Segments | Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	359	453	1,270	1,485
Segment income (loss)	25	19	312	273
Segment assets	16,385		16,385
Operating Segments | Gas Utilities and Infrastructure | Duke Energy Ohio
Segment Reporting Information [Line Items]
Operating Revenues	124	144	359	370
Segment income (loss)	18	19	70	57
Segment assets	4,111		4,111
Other | Other | Duke Energy Ohio
Segment Reporting Information [Line Items]
Segment income (loss)	(1)	0	(2)	(2)
Segment assets	10		10
Corporate And Eliminations
Segment Reporting Information [Line Items]
Operating Revenues	34	31	65	61
Segment income (loss)	(161)	(126)	(329)	(297)
Segment assets	8,708		8,708
Eliminations
Segment Reporting Information [Line Items]
Operating Revenues	(65)	(55)	(129)	(108)
Segment income (loss)		(1)		(1)
Eliminations | Duke Energy Ohio
Segment Reporting Information [Line Items]
Segment assets	(13)		(13)
Eliminations | Total Reportable Segments
Segment Reporting Information [Line Items]
Operating Revenues	40	32	80	62
Eliminations | Electric Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	18	9	35	16
Eliminations | Gas Utilities and Infrastructure
Segment Reporting Information [Line Items]
Operating Revenues	22	23	45	46
Eliminations | Other
Segment Reporting Information [Line Items]
Operating Revenues	25	23	49	46
Other
Segment Reporting Information [Line Items]
Operating Revenues	$ 9	$ 8	$ 16	$ 15