Business Segments (Business Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues	$ 7,351	$ 7,842	$ 6,564	$ 7,011	$ 6,117	$ 6,834	$ 5,638	$ 6,032	$ 28,768	$ 24,621	$ 23,366
Interest expense									2,439	2,207	2,097
Depreciation and amortization									5,086	4,762	4,504
Equity in earnings (losses) of unconsolidated affiliates									113	62	(2,005)
Income tax expense (benefit) from continuing operations									300	268	(169)
Segment income (loss)									3,659	3,602	981
Less noncontrolling interest									95	329	295
Add back preferred stock dividend									106	106	107
Net income from discontinued operations attributable to Duke Energy Corporation									(1,215)	200	289
Loss from discontinued operations, net of tax	(1,293)	3	(18)	(15)	(36)	(57)	(25)	(26)	(1,323)	(144)	(7)
Net income	(658)	$ 1,413	$ 880	$ 820	664	$ 1,276	$ 698	$ 941	2,455	3,579	1,082
Net loss attributable to Duke Energy									2,550	3,908	1,377
Capital expenditures									11,419	9,752	10,421
Segment assets	178,086				169,587				178,086	169,587	162,388
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes									4,078	3,991	920
Nonregulated electric and other									285	294	263
Regulated electric									(25,759)	(22,319)	(21,461)
Income (loss) attributable to noncontrolling interest									(95)	(329)	(295)
Duke Energy Indiana
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									3,922	3,174	2,795
Interest expense									189	196	161
Depreciation and amortization									645	615	569
Income tax expense (benefit) from continuing operations									(24)	107	84
Net loss attributable to Duke Energy									137	481	408
Segment assets	14,654				14,488				14,654	14,488
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes									113	588	492
Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									2,514	2,037	1,858
Interest expense									129	111	102
Depreciation and amortization									324	307	278
Income tax expense (benefit) from continuing operations									(21)	30	43
Segment income (loss)									302	204	252
Net loss attributable to Duke Energy									302	204	252
Capital expenditures									850	848	834
Segment assets	11,506				10,774				11,506	10,774	10,025
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									(10)	25
Total income (loss) from continuing operations before income taxes									281	234	295
Regulated electric									(1,798)	(1,493)	(1,405)
Duke Energy Carolinas
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									7,857	7,102	7,015
Interest expense									557	538	487
Depreciation and amortization									1,526	1,468	1,462
Income tax expense (benefit) from continuing operations									126	51	88
Net loss attributable to Duke Energy									1,600	1,336	956
Segment assets	50,346				47,162				50,346	47,162
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes									1,726	1,387	1,044
Duke Energy Progress
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									6,753	5,780	5,422
Interest expense									354	306	269
Depreciation and amortization									1,187	1,097	1,116
Income tax expense (benefit) from continuing operations									158	75	(36)
Net loss attributable to Duke Energy									1,008	991	415
Segment assets	36,752				35,383				36,752	35,383
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes									1,166	1,066	379
Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									(218)	(207)	(201)
Interest expense									(86)	(10)	(15)
Depreciation and amortization									(27)	(28)	(29)
Segment income (loss)									(1)	(3)	(4)
Segment assets											0
Eliminations | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Segment assets	(176)				(29)				(176)	(29)	(2)
Electric Utilities and Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									25,990	22,570	21,687
Equity in earnings (losses) of unconsolidated affiliates									7	7	(1)
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges											948
Reduction of prior year impairment											152
Shareholder contribution expense											16
Electric Utilities and Infrastructure | Duke Energy Indiana
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									386
Regulated electric									46
Income (loss) attributable to noncontrolling interest									34
Electric Utilities and Infrastructure | Gas Pipeline Assets
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges											5
Electric Utilities and Infrastructure | Clemson University Combined Heat and Power Plant
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges											19
Electric Utilities and Infrastructure | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									26,024	22,603	21,720
Interest expense									1,565	1,432	1,320
Depreciation and amortization									4,550	4,251	4,068
Equity in earnings (losses) of unconsolidated affiliates									7	7	(1)
Income tax expense (benefit) from continuing operations									536	494	340
Segment income (loss)									3,929	3,850	2,669
Capital expenditures									8,985	7,653	7,629
Segment assets	152,104				143,841				152,104	143,841	138,225
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									1,798	1,493	1,405
Interest expense									86	87	85
Depreciation and amortization									221	217	200
Income tax expense (benefit) from continuing operations									24	15	19
Segment income (loss)									189	141	162
Capital expenditures									488	486	548
Segment assets	7,504				6,882				7,504	6,882	6,615
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Impairment Charges
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges										160
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Other Income and Expense
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										77
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Operation, Maintenance and Other
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										5
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Regulated Operating Revenue, Electric, Non-Nuclear
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										13
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Interest Expense
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										3
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Depreciation and amortization
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										6
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Impairment Charges
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges										42
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Other Income and Expense
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										34
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Operation, Maintenance and Other
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										7
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Regulated Operating Revenue, Electric, Non-Nuclear
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										15
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Interest Expense
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										5
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Depreciation and amortization
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										1
Electric Utilities and Infrastructure | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									34	33	33
Gas Utilities and Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									2,748	2,022	1,653
Equity in earnings (losses) of unconsolidated affiliates									21	8	(2,017)
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges											7
Gas Utilities and Infrastructure | After-tax impairment charge
Segment Reporting Information, Profit (Loss) [Abstract]
Equity in earnings (losses) of unconsolidated affiliates											2,100
Gas Utilities and Infrastructure | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									2,840	2,112	1,748
Interest expense									182	142	135
Depreciation and amortization									327	303	258
Equity in earnings (losses) of unconsolidated affiliates									20	8	(2,017)
Income tax expense (benefit) from continuing operations									8	55	(349)
Segment income (loss)									468	396	(1,266)
Capital expenditures									1,295	1,271	1,309
Segment assets	16,411				15,179				16,411	15,179	13,849
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									716	544	453
Interest expense									43	24	17
Depreciation and amortization									103	90	78
Income tax expense (benefit) from continuing operations									(43)	19	26
Segment income (loss)									121	78	96
Capital expenditures									362	362	286
Segment assets	4,164				3,892				4,164	3,892	3,380
Gas Utilities and Infrastructure | Operating Segments | Gas Pipeline Assets
Segment Reporting Information, Profit (Loss) [Abstract]
Equity in earnings (losses) of unconsolidated affiliates										20
Gas Utilities and Infrastructure | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									92	90	95
Total Reportable Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									28,738	24,592	23,340
Total Reportable Segments | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									28,864	24,715	23,468
Interest expense									1,747	1,574	1,455
Depreciation and amortization									4,877	4,554	4,326
Equity in earnings (losses) of unconsolidated affiliates									27	15	(2,018)
Income tax expense (benefit) from continuing operations									544	549	(9)
Segment income (loss)									4,397	4,246	1,403
Capital expenditures									10,280	8,924	8,938
Segment assets	168,515				159,020				168,515	159,020	152,074
Total Reportable Segments | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									2,514	2,037	1,858
Interest expense									129	111	102
Depreciation and amortization									324	307	278
Income tax expense (benefit) from continuing operations									(19)	34	45
Segment income (loss)									310	219	258
Capital expenditures									850	848	834
Segment assets	11,668				10,774				11,668	10,774	9,995
Total Reportable Segments | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									126	123	128
Other
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									30	29	26
Segment Reporting Information Assets [Abstract]
Severance charge reversal											98
Other | Operating Segments | Impairment Charges
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									72	133
Other | Operating Segments | Operation, Maintenance and Other
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes									71	42
Other | Operating Segments | Depreciation and amortization
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes										17
Other | Operating Segments | Litigation Expense
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes									25
Other | Operating Segments | Gain (Loss) on Disposition of Assets
Segment Reporting Information Assets [Abstract]
Total income (loss) from continuing operations before income taxes									7
Other | Other
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									122	113	99
Interest expense									778	643	657
Depreciation and amortization									236	236	207
Equity in earnings (losses) of unconsolidated affiliates									86	47	13
Income tax expense (benefit) from continuing operations									(244)	(281)	(160)
Segment income (loss)									(737)	(641)	(418)
Capital expenditures									1,139	828	1,483
Segment assets	9,571				10,567				9,571	10,567	10,314
Other | Other | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Income tax expense (benefit) from continuing operations									(2)	(4)	(2)
Segment income (loss)									(8)	(15)	(6)
Segment assets	$ 14				$ 29				14	29	32
Other | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Revenues									$ 92	$ 84	$ 73