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Property, Plant and Equipment (Schedule Of Property, Plant and Equipment) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Equipment, estimated useful life, years | 13 years | 15 years |
Land | $ 2,162 | $ 2,046 |
Other buildings and improvements | 5,289 | 5,090 |
Equipment | 2,659 | 2,608 |
Construction in process | 6,168 | 6,645 |
Total property, plant and equipment | 161,819 | 155,580 |
Facilities to be retired, net | 144 | 29 |
Total net property, plant and equipment | $ 111,408 | $ 106,782 |
Other, estimated useful life, in years | 14 years | 14 years |
Finance leases, gross | $ 958 | $ 832 |
Accumulated amortization of finance leases | 9 | 12 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | 72 | 112 | $ 159
Nuclear fuel |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Nuclear fuel | 3,181 | 3,284 |
Accumulated depreciation and amortization | (1,799) | (1,832) |
Consolidated VIEs |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Total property, plant and equipment | 7,339 | 6,394 |
Accumulated depreciation and amortization | (1,474) | (1,242) |
Regulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | $ (47,611) | $ (46,216) |
Regulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Equipment, estimated useful life, years | 40 years | 39 years |
Plant - transmission and distribution | $ 120,855 | $ 117,107 |
Regulated | Natural gas transmission and distribution |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Equipment, estimated useful life, years | 54 years | 54 years |
Plant - transmission and distribution | $ 12,079 | $ 10,799 |
Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Equipment, estimated useful life, years | 37 years | 36 years |
Other buildings and improvements | $ 1,921 | $ 2,038 |
Nonregulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | (2,944) | (2,611) |
Accumulated amortization of finance leases | $ (1) | $ 23 |
Nonregulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Equipment, estimated useful life, years | 28 years | 27 years |
Plant - transmission and distribution | $ 7,104 | $ 5,444 |
Nonregulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Equipment, estimated useful life, years | 11 years | 10 years |
Other buildings and improvements | $ 401 | $ 519 |
Duke Energy Carolinas |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Land | 543 | 536 |
Other buildings and improvements | 1,323 | 1,203 |
Equipment | 614 | 620 |
Construction in process | 2,078 | 1,645 |
Total property, plant and equipment | 51,874 | 50,640 |
Facilities to be retired, net | 102 |  |
Total net property, plant and equipment | 34,122 | 33,187 |
Finance leases, gross | 335 | 335 |
Accumulated amortization of finance leases | 33 | 23 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | 29 | 28 | 30
Duke Energy Carolinas | Nuclear fuel |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Nuclear fuel | 1,856 | 1,837 |
Accumulated depreciation and amortization | (1,064) | (1,010) |
Duke Energy Carolinas | Regulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | (17,854) | (17,453) |
Duke Energy Carolinas | Regulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 44,910 | 44,059 |
Duke Energy Carolinas | Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Other buildings and improvements | 550 | 740 |
Progress Energy |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Land | 957 | 908 |
Other buildings and improvements | 1,563 | 1,521 |
Equipment | 791 | 759 |
Construction in process | 2,297 | 2,013 |
Total property, plant and equipment | 60,894 | 57,892 |
Facilities to be retired, net | 26 | 29 |
Total net property, plant and equipment | 41,706 | 39,553 |
Finance leases, gross | 729 | 416 |
Accumulated amortization of finance leases | 178 | 141 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | 20 | 17 | 31
Progress Energy | Nuclear fuel |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Nuclear fuel | 1,325 | 1,447 |
Accumulated depreciation and amortization | (735) | (822) |
Progress Energy | Regulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | (19,214) | (18,368) |
Progress Energy | Regulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 53,447 | 50,785 |
Progress Energy | Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Other buildings and improvements | 514 | 459 |
Duke Energy Progress |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Land | 482 | 463 |
Other buildings and improvements | 1,115 | 1,070 |
Equipment | 497 | 498 |
Construction in process | 954 | 709 |
Total property, plant and equipment | 37,018 | 35,759 |
Facilities to be retired, net | 26 | 29 |
Total net property, plant and equipment | 23,657 | 22,987 |
Finance leases, gross | 627 | 297 |
Accumulated amortization of finance leases | 45 | 24 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | 14 | 12 | 28
Duke Energy Progress | Nuclear fuel |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Nuclear fuel | 1,325 | 1,447 |
Accumulated depreciation and amortization | (735) | (822) |
Duke Energy Progress | Regulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | (13,387) | (12,801) |
Duke Energy Progress | Regulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 32,417 | 31,375 |
Duke Energy Progress | Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Other buildings and improvements | 228 | 197 |
Duke Energy Florida |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Land | 475 | 445 |
Other buildings and improvements | 437 | 441 |
Equipment | 294 | 261 |
Construction in process | 1,343 | 1,304 |
Total property, plant and equipment | 23,865 | 22,123 |
Total net property, plant and equipment | 18,046 | 16,563 |
Finance leases, gross | 102 | 119 |
Accumulated amortization of finance leases | 133 | 117 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | 6 | 5 | 3
Duke Energy Florida | Regulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | (5,819) | (5,560) |
Duke Energy Florida | Regulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 21,030 | 19,410 |
Duke Energy Florida | Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Other buildings and improvements | 286 | 262 |
Duke Energy Ohio |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Land | 219 | 171 |
Other buildings and improvements | 287 | 294 |
Equipment | 403 | 385 |
Construction in process | 515 | 407 |
Total property, plant and equipment | 11,725 | 11,022 |
Facilities to be retired, net | 6 |  |
Total net property, plant and equipment | 8,625 | 8,009 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | 20 | 26 | 22
Duke Energy Ohio | Regulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | (3,106) | (3,013) |
Duke Energy Ohio | Regulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 6,573 | 6,255 |
Duke Energy Ohio | Regulated | Natural gas transmission and distribution |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 3,347 | 3,136 |
Duke Energy Ohio | Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Other buildings and improvements | 381 | 374 |
Duke Energy Indiana |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Land | 122 | 118 |
Other buildings and improvements | 253 | 309 |
Equipment | 262 | 238 |
Construction in process | 460 | 409 |
Total property, plant and equipment | 17,343 | 17,382 |
Total net property, plant and equipment | 11,760 | 11,721 |
Finance leases, gross | 10 | 10 |
Accumulated amortization of finance leases | 3 | 3 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | (17) | 10 | 26
Duke Energy Indiana | PISCC Amortization |  |  |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | (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 | (5,583) | (5,661) |
Duke Energy Indiana | Regulated | Electric generation, distribution and transmission |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 15,925 | 16,008 |
Duke Energy Indiana | Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Other buildings and improvements | 321 | 300 |
Piedmont |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Land | 279 | 279 |
Other buildings and improvements | 368 | 324 |
Equipment | 122 | 122 |
Construction in process | 262 | 581 |
Total property, plant and equipment | 9,918 | 9,134 |
Facilities to be retired, net | 11 |  |
Total net property, plant and equipment | 8,030 | 7,385 |
Capitalized Interest Costs [Abstract] |  |  |
Capitalized interest | 9 | 8 | $ 26
Piedmont | Regulated |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Accumulated depreciation and amortization | (1,899) | (1,749) |
Piedmont | Regulated | Natural gas transmission and distribution |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Plant - transmission and distribution | 8,732 | 7,663 |
Piedmont | Regulated | Other buildings and improvements |  |  |
Public Utilities, Property, Plant and Equipment, Net [Abstract] |  |  |
Other buildings and improvements | $ 155 | $ 165 |

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