Business Segments (Business Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues	$ 7,212	$ 7,994	$ 6,578	$ 7,276	$ 7,351	$ 7,842	$ 6,564	$ 7,011	$ 29,060	$ 28,768	$ 24,621
Interest expense									3,014	2,439	2,207
Depreciation and amortization									5,253	5,086	4,762
Equity in earnings of unconsolidated affiliates									113	113	62
Income Tax Expense									438	300	268
Segment income (loss)									4,126	3,659	3,602
Less noncontrolling interest									(33)	95	329
Add back preferred stock dividend									106	106	106
Net (loss) income from discontinued operations attributable to Duke Energy Corporation									(1,391)	(1,215)	200
Net income	996	$ 1,321	$ (204)	$ 761	(658)	$ 1,413	$ 880	$ 820	2,874	2,455	3,579
Capital expenditures									12,622	11,419	9,752
Segment assets	176,893				178,086				176,893	178,086	169,587
Operation, maintenance and other									5,625	5,734	5,703
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									85	434	353
Total income (loss) from continuing operations before income taxes									4,767	4,078	3,991
Nonregulated electric and other									291	285	294
Regulated electric									(26,617)	(25,759)	(22,319)
Income (loss) attributable to noncontrolling interest									33	(95)	(329)
Depreciation, amortization and accretion (including amortization of nuclear fuel)									6,084	5,843	5,663
Losses on sales of other assets									52	22	13
Duke Energy Indiana
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									3,399	3,922	3,174
Interest expense									213	189	196
Depreciation and amortization									666	645	615
Income Tax Expense									110	(24)	107
Segment assets	14,811				14,654				14,811	14,654
Operation, maintenance and other									713	729	750
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges										388	9
Total income (loss) from continuing operations before income taxes									607	113	588
Depreciation, amortization and accretion (including amortization of nuclear fuel)									669	648	619
Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									2,507	2,514	2,037
Interest expense									169	129	111
Depreciation and amortization									367	324	307
Income Tax Expense									63	(21)	30
Segment income (loss)									334	302	204
Capital expenditures									939	850	848
Segment assets	12,216				11,506				12,216	11,506	10,774
Operation, maintenance and other									478	523	479
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									3	(10)	25
Total income (loss) from continuing operations before income taxes									397	281	234
Regulated electric									(1,868)	(1,798)	(1,493)
Depreciation, amortization and accretion (including amortization of nuclear fuel)									371	328	311
Duke Energy Carolinas
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									8,288	7,857	7,102
Interest expense									686	557	538
Depreciation and amortization									1,593	1,526	1,468
Income Tax Expense									141	126	51
Segment assets	52,110				50,346				52,110	50,346
Operation, maintenance and other									1,774	1,892	1,833
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									44	26	227
Total income (loss) from continuing operations before income taxes									1,611	1,726	1,387
Depreciation, amortization and accretion (including amortization of nuclear fuel)									1,845	1,787	1,743
Losses on sales of other assets									26	4	2
Duke Energy Progress
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									6,488	6,753	5,780
Interest expense									427	354	306
Depreciation and amortization									1,266	1,187	1,097
Income Tax Expense									149	158	75
Segment assets	36,924				36,752				36,924	36,752
Operation, maintenance and other									1,379	1,475	1,467
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									29	7	63
Total income (loss) from continuing operations before income taxes									1,147	1,166	1,066
Depreciation, amortization and accretion (including amortization of nuclear fuel)									1,460	1,371	1,286
Other
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									37	30	29
Corporate And Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									134	122	113
Interest expense									1,097	778	643
Depreciation and amortization									248	236	236
Equity in earnings of unconsolidated affiliates									66	86	47
Income Tax Expense									(420)	(244)	(281)
Segment income (loss)									(616)	(737)	(641)
Capital expenditures									995	1,139	828
Segment assets	4,095				9,571				4,095	9,571	10,567
Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									(261)	(218)	(207)
Interest expense									(150)	(86)	(10)
Depreciation and amortization									(28)	(27)	(28)
Segment income (loss)										(1)	(3)
Eliminations | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Segment assets	(121)				(176)				(121)	(176)	(29)
Total Reportable Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									29,023	28,738	24,592
Total Reportable Segments | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									29,187	28,864	24,715
Interest expense									2,067	1,747	1,574
Depreciation and amortization									5,033	4,877	4,554
Equity in earnings of unconsolidated affiliates									47	27	15
Income Tax Expense									858	544	549
Segment income (loss)									4,742	4,397	4,246
Capital expenditures									11,627	10,280	8,924
Segment assets	172,798				168,515				172,798	168,515	159,020
Total Reportable Segments | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									2,507	2,514	2,037
Interest expense									169	129	111
Depreciation and amortization									367	324	307
Income Tax Expense									65	(19)	34
Segment income (loss)									343	310	219
Capital expenditures									939	850	848
Segment assets	12,324				11,668				12,324	11,668	10,774
Total Reportable Segments | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									164	126	123
Electric Utilities and Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									26,846	25,990	22,570
Equity in earnings of unconsolidated affiliates									7	7	7
Electric Utilities and Infrastructure | Duke Energy Carolinas
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									35
Electric Utilities and Infrastructure | Duke Energy Progress
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									33
Electric Utilities and Infrastructure | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									26,921	26,024	22,603
Interest expense									1,850	1,565	1,432
Depreciation and amortization									4,684	4,550	4,251
Equity in earnings of unconsolidated affiliates									7	7	7
Income Tax Expense									742	536	494
Segment income (loss)									4,223	3,929	3,850
Capital expenditures									10,135	8,985	7,653
Segment assets	155,449				152,104				155,449	152,104	143,841
Electric Utilities and Infrastructure | Operating Segments | 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 | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									1,868	1,798	1,493
Interest expense									116	86	87
Depreciation and amortization									257	221	217
Income Tax Expense									42	24	15
Segment income (loss)									227	189	141
Capital expenditures									520	488	486
Segment assets	7,978				7,504				7,978	7,504	6,882
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas
Segment Reporting Information, Profit (Loss) [Abstract]
Interest expense											3
Operation, maintenance and other											5
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges											160
Total income (loss) from continuing operations before income taxes											77
Regulated electric											(13)
Depreciation, amortization and accretion (including amortization of nuclear fuel)											6
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Operation, Maintenance and Other
Segment Reporting Information Assets [Abstract]
Segment income (loss)									8
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress
Segment Reporting Information, Profit (Loss) [Abstract]
Interest expense											5
Operation, maintenance and other											7
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges											42
Total income (loss) from continuing operations before income taxes											34
Regulated electric											(15)
Depreciation, amortization and accretion (including amortization of nuclear fuel)											1
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Operation, Maintenance and Other
Segment Reporting Information Assets [Abstract]
Segment income (loss)									8
Electric Utilities and Infrastructure | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									75	34	33
Gas Utilities and Infrastructure
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									2,177	2,748	2,022
Equity in earnings of unconsolidated affiliates									40	21	8
Gas Utilities and Infrastructure | Operating Segments
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									2,266	2,840	2,112
Interest expense									217	182	142
Depreciation and amortization									349	327	303
Equity in earnings of unconsolidated affiliates									40	20	8
Income Tax Expense									116	8	55
Segment income (loss)									519	468	396
Capital expenditures									1,492	1,295	1,271
Segment assets	17,349				16,411				17,349	16,411	15,179
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									639	716	544
Interest expense									53	43	24
Depreciation and amortization									110	103	90
Income Tax Expense									23	(43)	19
Segment income (loss)									116	121	78
Capital expenditures									419	362	362
Segment assets	4,346				4,164				4,346	4,164	3,892
Gas Utilities and Infrastructure | Operating Segments | Gas Pipeline Assets
Segment Reporting Information, Profit (Loss) [Abstract]
Equity in earnings of unconsolidated affiliates											20
Gas Utilities and Infrastructure | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									89	92	90
Other | Other | Duke Energy Ohio
Segment Reporting Information, Profit (Loss) [Abstract]
Income Tax Expense									(2)	(2)	(4)
Segment income (loss)									(9)	(8)	(15)
Segment assets	$ 13				$ 14				13	14	29
Other
Segment Reporting Information, Profit (Loss) [Abstract]
Operation, maintenance and other										71
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges									14
Other | Operation, Maintenance and Other
Segment Reporting Information Assets [Abstract]
Segment income (loss)									110
Other | Business Transformation
Segment Reporting Information Assets [Abstract]
Losses on sales of other assets										7
Other | Litigation
Segment Reporting Information, Profit (Loss) [Abstract]
Operation, maintenance and other										25
Other | Operating Segments
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges										72
Other | Operating Segments | Business Transformation
Segment Reporting Information, Profit (Loss) [Abstract]
Operation, maintenance and other											42
Segment Reporting Information Assets [Abstract]
Impairment of assets and other charges											133
Depreciation, amortization and accretion (including amortization of nuclear fuel)											17
Other | Eliminations
Segment Reporting Information, Profit (Loss) [Abstract]
Operating Revenues									$ 97	$ 92	$ 84