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Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 11 years 13 years
Land $ 2,667 $ 2,503
Other buildings and improvements 6,429 6,844
Equipment 4,193 3,850
Construction in process 10,075 7,756
Total property, plant and equipment 190,409 178,737
Total net property, plant and equipment $ 129,959 $ 121,626
Other, estimated useful life, in years 11 years 10 years
Finance leases, gross $ 682 $ 670
Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 3,683 3,518
Accumulated depreciation and amortization (1,886) (1,824)
Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization $ (59,441) $ (55,143)
Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 38 years 37 years
Plant - transmission and distribution $ 145,947 $ 137,836
Regulated | Natural gas transmission and distribution    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 58 years 57 years
Plant - transmission and distribution $ 14,201 $ 13,482
Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Average remaining useful life (in years) 40 years 41 years
Other buildings and improvements $ 3,214 $ 2,948
Nonregulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (1,009) (1,968)
Accumulated amortization of finance leases (35) (25)
Duke Energy Carolinas    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 644 617
Other buildings and improvements 1,362 1,227
Equipment 1,132 997
Construction in process 3,708 2,735
Total property, plant and equipment 62,513 58,382
Total net property, plant and equipment 41,855 39,292
Finance leases, gross 349 336
Accumulated amortization of finance leases (98) (84)
Duke Energy Carolinas | Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 2,128 2,003
Accumulated depreciation and amortization (1,064) (1,010)
Duke Energy Carolinas | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (20,658) (19,090)
Duke Energy Carolinas | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 52,259 49,547
Duke Energy Carolinas | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 1,280 1,256
Progress Energy    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 1,226 1,134
Other buildings and improvements 2,115 1,953
Equipment 1,456 1,252
Construction in process 4,390 3,657
Total property, plant and equipment 78,347 72,560
Total net property, plant and equipment 52,922 48,974
Finance leases, gross 605 620
Accumulated amortization of finance leases (208) (159)
Progress Energy | Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 1,555 1,515
Accumulated depreciation and amortization (822) (814)
Progress Energy | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (25,425) (23,586)
Progress Energy | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 66,751 62,351
Progress Energy | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 854 698
Duke Energy Progress    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 557 535
Other buildings and improvements 1,466 1,349
Equipment 852 753
Construction in process 2,761 1,884
Total property, plant and equipment 45,175 42,060
Total net property, plant and equipment 28,195 26,130
Finance leases, gross 478 512
Accumulated amortization of finance leases (203) (159)
Duke Energy Progress | Nuclear fuel    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Nuclear fuel 1,555 1,515
Accumulated depreciation and amortization (822) (814)
Duke Energy Progress | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (16,980) (15,930)
Duke Energy Progress | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 37,561 35,633
Duke Energy Progress | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 423 391
Duke Energy Florida    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 669 599
Other buildings and improvements 637 594
Equipment 604 499
Construction in process 1,629 1,773
Total property, plant and equipment 33,160 30,490
Total net property, plant and equipment 24,723 22,840
Finance leases, gross 127 108
Accumulated amortization of finance leases (5)  
Duke Energy Florida | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (8,437) (7,650)
Duke Energy Florida | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 29,190 26,718
Duke Energy Florida | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 431 307
Duke Energy Ohio    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 289 258
Other buildings and improvements 478 426
Equipment 555 542
Construction in process 394 385
Total property, plant and equipment 14,627 13,918
Total net property, plant and equipment 10,815 10,244
Duke Energy Ohio | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (3,812) (3,674)
Duke Energy Ohio | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 7,945 7,634
Duke Energy Ohio | Regulated | Natural gas transmission and distribution    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 4,529 4,255
Duke Energy Ohio | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 437 418
Duke Energy Indiana    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 157 144
Other buildings and improvements 287 254
Equipment 540 490
Construction in process 884 406
Total property, plant and equipment 21,241 19,970
Total net property, plant and equipment 13,749 13,122
Finance leases, gross 13 10
Accumulated amortization of finance leases (5) (4)
Duke Energy Indiana | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (7,492) (6,848)
Duke Energy Indiana | Regulated | Electric generation, distribution and transmission    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 18,992 18,304
Duke Energy Indiana | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements 381 372
Piedmont    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Land 326 325
Other buildings and improvements 526 488
Equipment 131 157
Construction in process 408 311
Total property, plant and equipment 11,325 10,712
Total net property, plant and equipment 9,157 8,671
Piedmont | Regulated    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Accumulated depreciation and amortization (2,168) (2,041)
Piedmont | Regulated | Natural gas transmission and distribution    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Plant - transmission and distribution 9,672 9,227
Piedmont | Regulated | Other buildings and improvements    
Public Utilities, Property, Plant and Equipment, Net [Abstract]    
Other buildings and improvements $ 262 $ 204