Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	14 years	13 years
Land	$ 2,345	$ 2,232
Other buildings and improvements	6,920	6,459
Equipment	3,409	2,959
Construction in process	8,372	7,381
Total property, plant and equipment	171,351	163,839
Facilities to be retired, net	2	9
Total net property, plant and equipment	$ 115,315	$ 111,748
Other, estimated useful life, in years	12 years	13 years
Finance leases, gross	$ 697	$ 816
Accumulated amortization of finance leases	(3)	(7)
Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	3,303	3,081
Accumulated depreciation and amortization	(1,793)	(1,683)
Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	$ (54,323)	$ (50,544)
Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	40 years	39 years
Plant - transmission and distribution	$ 129,985	$ 126,016
Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	57 years	56 years
Plant - transmission and distribution	$ 14,130	$ 13,174
Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Average remaining useful life (in years)	42 years	40 years
Other buildings and improvements	$ 2,887	$ 2,537
Nonregulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(1,715)	(1,556)
Accumulated amortization of finance leases	(7)	(1)
Duke Energy Carolinas
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	581	565
Other buildings and improvements	1,455	1,368
Equipment	870	710
Construction in process	2,578	2,671
Total property, plant and equipment	56,670	54,650
Total net property, plant and equipment	36,774	35,981
Finance leases, gross	335	335
Accumulated amortization of finance leases	(67)	(51)
Duke Energy Carolinas | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,866	1,723
Accumulated depreciation and amortization	(991)	(934)
Duke Energy Carolinas | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(19,896)	(18,669)
Duke Energy Carolinas | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	48,107	46,640
Duke Energy Carolinas | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	1,213	973
Progress Energy
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	1,012	993
Other buildings and improvements	2,037	1,943
Equipment	1,104	936
Construction in process	3,941	3,073
Total property, plant and equipment	67,644	64,822
Total net property, plant and equipment	45,344	44,238
Finance leases, gross	615	674
Accumulated amortization of finance leases	(292)	(233)
Progress Energy | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,437	1,358
Accumulated depreciation and amortization	(802)	(749)
Progress Energy | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(22,300)	(20,584)
Progress Energy | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	57,436	55,872
Progress Energy | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	677	647
Duke Energy Progress
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	502	496
Other buildings and improvements	1,481	1,460
Equipment	654	567
Construction in process	1,661	1,317
Total property, plant and equipment	39,283	38,875
Total net property, plant and equipment	24,056	24,674
Finance leases, gross	552	590
Accumulated amortization of finance leases	(119)	(81)
Duke Energy Progress | Nuclear fuel
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Nuclear fuel	1,437	1,358
Accumulated depreciation and amortization	(802)	(749)
Duke Energy Progress | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(15,227)	(14,201)
Duke Energy Progress | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	33,171	33,336
Duke Energy Progress | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	377	341
Duke Energy Florida
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	510	497
Other buildings and improvements	548	476
Equipment	450	369
Construction in process	2,280	1,756
Total property, plant and equipment	28,353	25,940
Total net property, plant and equipment	21,286	19,563
Finance leases, gross	63	84
Accumulated amortization of finance leases	(173)	(152)
Duke Energy Florida | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(7,067)	(6,377)
Duke Energy Florida | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	24,265	22,536
Duke Energy Florida | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	300	306
Duke Energy Ohio
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	242	230
Other buildings and improvements	410	380
Equipment	474	441
Construction in process	427	375
Total property, plant and equipment	13,210	12,497
Total net property, plant and equipment	9,759	9,247
Duke Energy Ohio | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(3,451)	(3,250)
Duke Energy Ohio | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	7,243	6,900
Duke Energy Ohio | Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	3,993	3,773
Duke Energy Ohio | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	421	398
Duke Energy Indiana
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	133	124
Other buildings and improvements	344	320
Equipment	442	356
Construction in process	427	381
Total property, plant and equipment	18,900	18,121
Total net property, plant and equipment	12,399	12,100
Finance leases, gross	10	10
Accumulated amortization of finance leases	(4)	(4)
Duke Energy Indiana | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(6,501)	(6,021)
Duke Energy Indiana | Regulated | Electric generation, distribution and transmission
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	17,199	16,604
Duke Energy Indiana | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	355	336
Piedmont
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Land	352	295
Other buildings and improvements	363	387
Equipment	143	125
Construction in process	690	478
Total property, plant and equipment	11,906	10,869
Facilities to be retired, net	2	9
Total net property, plant and equipment	9,649	8,797
Piedmont | Regulated
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Accumulated depreciation and amortization	(2,259)	(2,081)
Piedmont | Regulated | Natural gas transmission and distribution
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Plant - transmission and distribution	10,137	9,401
Piedmont | Regulated | Other buildings and improvements
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Other buildings and improvements	$ 221	$ 183