Property, Plant and Equipment (Schedule Of Property, Plant and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Equipment, estimated useful life, years	13 years	13 years
Land	$ 2,232	$ 2,145
Other buildings and improvements	6,090	5,276
Equipment	2,959	2,659
Construction in process	7,381	5,979
Total property, plant and equipment	163,839	154,496
Facilities to be retired, net	9	144
Total net property, plant and equipment	$ 111,748	$ 105,536
Other, estimated useful life, in years	15 years	14 years
Finance leases, gross	$ 816	$ 958
Accumulated amortization of finance leases	7	9
Capitalized Interest Costs [Abstract]
Capitalized interest	118	66	$ 96
Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	3,081	3,181
Accumulated depreciation and amortization	(1,683)	(1,799)
Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	$ (50,544)	$ (47,611)
Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Equipment, estimated useful life, years	39 years	40 years
Plant - transmission and distribution	$ 126,016	$ 120,855
Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Equipment, estimated useful life, years	56 years	54 years
Plant - transmission and distribution	$ 13,174	$ 12,079
Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Equipment, estimated useful life, years	40 years	37 years
Other buildings and improvements	$ 2,537	$ 1,921
Nonregulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(1,556)	(1,493)
Accumulated amortization of finance leases	$ 1	$ 1
Nonregulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Equipment, estimated useful life, years	10 years	11 years
Other buildings and improvements	$ 369	$ 401
Duke Energy Carolinas
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	565	543
Other buildings and improvements	1,368	1,323
Equipment	710	614
Construction in process	2,671	2,078
Total property, plant and equipment	54,650	51,874
Facilities to be retired, net	0	102
Total net property, plant and equipment	35,981	34,122
Finance leases, gross	335	335
Accumulated amortization of finance leases	51	33
Capitalized Interest Costs [Abstract]
Capitalized interest	50	29	28
Duke Energy Carolinas | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,723	1,856
Accumulated depreciation and amortization	(934)	(1,064)
Duke Energy Carolinas | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(18,669)	(17,854)
Duke Energy Carolinas | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	46,640	44,910
Duke Energy Carolinas | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	973	550
Progress Energy
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	993	957
Other buildings and improvements	1,943	1,563
Equipment	936	791
Construction in process	3,073	2,297
Total property, plant and equipment	64,822	60,894
Facilities to be retired, net		26
Total net property, plant and equipment	44,238	41,706
Finance leases, gross	674	729
Accumulated amortization of finance leases	233	178
Capitalized Interest Costs [Abstract]
Capitalized interest	26	20	17
Progress Energy | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,358	1,325
Accumulated depreciation and amortization	(749)	(735)
Progress Energy | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(20,584)	(19,214)
Progress Energy | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	55,872	53,447
Progress Energy | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	647	514
Duke Energy Progress
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	496	482
Other buildings and improvements	1,460	1,115
Equipment	567	497
Construction in process	1,317	954
Total property, plant and equipment	38,875	37,018
Facilities to be retired, net		26
Total net property, plant and equipment	24,674	23,657
Finance leases, gross	590	627
Accumulated amortization of finance leases	81	45
Capitalized Interest Costs [Abstract]
Capitalized interest	19	14	12
Duke Energy Progress | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,358	1,325
Accumulated depreciation and amortization	(749)	(735)
Duke Energy Progress | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(14,201)	(13,387)
Duke Energy Progress | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	33,336	32,417
Duke Energy Progress | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	341	228
Duke Energy Florida
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	497	475
Other buildings and improvements	476	437
Equipment	369	294
Construction in process	1,756	1,343
Total property, plant and equipment	25,940	23,865
Total net property, plant and equipment	19,563	18,046
Finance leases, gross	84	102
Accumulated amortization of finance leases	152	133
Capitalized Interest Costs [Abstract]
Capitalized interest	7	6	5
Duke Energy Florida | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(6,377)	(5,819)
Duke Energy Florida | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	22,536	21,030
Duke Energy Florida | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	306	286
Duke Energy Ohio
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	230	219
Other buildings and improvements	380	287
Equipment	441	403
Construction in process	375	515
Total property, plant and equipment	12,497	11,725
Facilities to be retired, net		6
Total net property, plant and equipment	9,247	8,625
Capitalized Interest Costs [Abstract]
Capitalized interest	14	20	26
Duke Energy Ohio | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(3,250)	(3,106)
Duke Energy Ohio | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	6,900	6,573
Duke Energy Ohio | Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	3,773	3,347
Duke Energy Ohio | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	398	381
Duke Energy Indiana
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	124	122
Other buildings and improvements	320	253
Equipment	356	262
Construction in process	381	460
Total property, plant and equipment	18,121	17,343
Total net property, plant and equipment	12,100	11,760
Finance leases, gross	10	10
Accumulated amortization of finance leases	4	3
Capitalized Interest Costs [Abstract]
PISCC Amortization		(17)
Capitalized interest	3		10
Duke Energy Indiana | PISCC Amortization
Capitalized Interest Costs [Abstract]
PISCC Amortization		24
Duke Energy Indiana | Debt Component
Capitalized Interest Costs [Abstract]
Capitalized interest		7
Duke Energy Indiana | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(6,021)	(5,583)
Duke Energy Indiana | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	16,604	15,925
Duke Energy Indiana | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	336	321
Piedmont
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	295	279
Other buildings and improvements	387	368
Equipment	125	122
Construction in process	478	262
Total property, plant and equipment	10,869	9,918
Facilities to be retired, net	9	11
Total net property, plant and equipment	8,797	8,030
Capitalized Interest Costs [Abstract]
Capitalized interest	4	9	$ 8
Piedmont | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(2,081)	(1,899)
Piedmont | Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	9,401	8,732
Piedmont | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	$ 183	$ 155