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Regulatory Matters (Schedule of Regulatory Assets and Liabilities) (Details) - USD ($) $ in Millions | Jan. 31, 2023 | Dec. 31, 2022 | Aug. 31, 2022 | Jul. 31, 2022 | May 31, 2022 | Apr. 30, 2022 | Dec. 31, 2021
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Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | $ 18,130 |  |  |  |  | $ 14,637
Less: current portion |  | 3,485 |  |  |  |  | 2,150
Total noncurrent regulatory assets |  | 14,645 |  |  |  |  | 12,487
Total regulatory liabilities |  | 15,048 |  |  |  |  | 17,363
Less: current portion |  | 1,466 |  |  |  |  | 1,211
Total noncurrent regulatory liabilities |  | 13,582 |  |  |  |  | 16,152
Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 6,462 |  |  |  |  | 7,199
Costs of removal |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 5,151 |  |  |  |  | 6,150
AROs – nuclear and other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 1,038 |  |  |  |  | 2,053
Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 683 |  |  |  |  | 364
Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 211 |  |  |  |  | 213
DOE Settlement |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 154 |  |  |  |  |
Provision for rate refunds |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 78 |  |  |  |  | 274
Amounts to be refunded to customers |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 45 |  |  |  |  |
Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 1,226 |  |  |  |  | 1,110
AROs – coal ash |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 3,205 |  |  |  |  | 3,408
AROs – nuclear and other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 945 |  |  |  |  | 684
Deferred Fuel Costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 3,866 |  |  |  |  | 1,253
Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 2,336 |  |  |  |  | 2,017
Storm cost securitized balance, net |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 940 |  |  |  |  | 991
Nuclear asset securitized balance, net |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 881 |  |  |  |  | 937
Debt fair value adjustment |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 829 |  |  |  |  | 884
Storm cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 666 |  |  |  |  | 213
Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 378 |  |  |  |  | 348
Post-in-service carrying costs (PISCC) and deferred operating expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 342 |  |  |  |  | 356
Retired generation facilities |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 316 |  |  |  |  | 357
Deferred asset – Lee and Harris COLA |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 288 |  |  |  |  | 317
Advanced metering infrastructure (AMI) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 283 |  |  |  |  | 311
Customer connect project |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 271 |  |  |  |  | 242
Costs of removal regulatory asset |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 221 |  |  |  |  | 107
Vacation accrual |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 222 |  |  |  |  | 221
Incremental COVID-19 expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 210 |  |  |  |  | 87
CEP deferral |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 190 |  |  |  |  | 161
Demand side management (DSM)/Energy efficiency (EE) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 189 |  |  |  |  | 235
Derivatives – natural gas supply contracts |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 168 |  |  |  |  | 139
NCEMPA deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 157 |  |  |  |  | 165
Nuclear deferral |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 154 |  |  |  |  | 120
Deferred pipeline integrity costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 121 |  |  |  |  | 108
COR settlement |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 120 |  |  |  |  | 123
Deferred coal ash handling system costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 92 |  |  |  |  | 90
Qualifying facility contract buyouts |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 81 |  |  |  |  | 94
Amounts due from customers |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 57 |  |  |  |  | 85
Propane caverns |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 26 |  |  |  |  |
Deferred severance charges |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 21 |  |  |  |  | 54
Manufactured gas plant (MGP) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  |  |  |  |  |  | 104
Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 555 |  |  |  |  | 426
Progress Energy |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 8,979 |  |  |  |  | 6,939
Less: current portion |  | 1,833 |  |  |  |  | 1,030
Total noncurrent regulatory assets |  | 7,146 |  |  |  |  | 5,909
Total regulatory liabilities |  | 5,329 |  |  |  |  | 6,044
Less: current portion |  | 576 |  |  |  |  | 478
Total noncurrent regulatory liabilities |  | 4,753 |  |  |  |  | 5,566
Progress Energy | Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 2,192 |  |  |  |  | 2,394
Progress Energy | Costs of removal |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 2,269 |  |  |  |  | 2,955
Progress Energy | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 252 |  |  |  |  | 155
Progress Energy | DOE Settlement |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 154 |  |  |  |  |
Progress Energy | Provision for rate refunds |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 28 |  |  |  |  | 87
Progress Energy | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 434 |  |  |  |  | 453
Progress Energy | AROs – coal ash |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 1,429 |  |  |  |  | 1,399
Progress Energy | AROs – nuclear and other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 884 |  |  |  |  | 620
Progress Energy | Deferred Fuel Costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 2,060 |  |  |  |  | 718
Progress Energy | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 759 |  |  |  |  | 725
Progress Energy | Storm cost securitized balance, net |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 720 |  |  |  |  | 759
Progress Energy | Nuclear asset securitized balance, net |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 881 |  |  |  |  | 937
Progress Energy | Storm cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 559 |  |  |  |  | 189
Progress Energy | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 128 |  |  |  |  | 137
Progress Energy | Post-in-service carrying costs (PISCC) and deferred operating expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 42 |  |  |  |  | 47
Progress Energy | Retired generation facilities |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 243 |  |  |  |  | 265
Progress Energy | Deferred asset – Lee and Harris COLA |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 21 |  |  |  |  | 21
Progress Energy | Advanced metering infrastructure (AMI) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 111 |  |  |  |  | 130
Progress Energy | Customer connect project |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 136 |  |  |  |  | 124
Progress Energy | Costs of removal regulatory asset |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 221 |  |  |  |  | 107
Progress Energy | Vacation accrual |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 43 |  |  |  |  | 42
Progress Energy | Incremental COVID-19 expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 78 |  |  |  |  | 28
Progress Energy | Demand side management (DSM)/Energy efficiency (EE) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 188 |  |  |  |  | 230
Progress Energy | NCEMPA deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 157 |  |  |  |  | 165
Progress Energy | Nuclear deferral |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 64 |  |  |  |  | 42
Progress Energy | COR settlement |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 32 |  |  |  |  | 32
Progress Energy | Deferred coal ash handling system costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 25 |  |  |  |  | 23
Progress Energy | Qualifying facility contract buyouts |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 81 |  |  |  |  | 94
Progress Energy | Deferred severance charges |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 7 |  |  |  |  | 18
Progress Energy | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 110 |  |  |  |  | 87
Duke Energy Carolinas |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 5,388 |  |  |  |  | 3,479
Less: current portion |  | 1,095 |  |  |  |  | 544
Total noncurrent regulatory assets |  | 4,293 |  |  |  |  | 2,935
Total regulatory liabilities |  | 6,313 |  |  |  |  | 7,685
Less: current portion |  | 530 |  |  |  |  | 487
Total noncurrent regulatory liabilities |  | 5,783 |  |  |  |  | 7,198
Duke Energy Carolinas | Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 2,475 |  |  |  |  | 2,785
Duke Energy Carolinas | Costs of removal |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 1,769 |  |  |  |  | 2,009
Duke Energy Carolinas | AROs – nuclear and other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 1,038 |  |  |  |  | 2,053
Duke Energy Carolinas | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 350 |  |  |  |  | 209
Duke Energy Carolinas | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 44 |  |  |  |  | 44
Duke Energy Carolinas | Provision for rate refunds |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 50 |  |  |  |  | 124
Duke Energy Carolinas | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 587 |  |  |  |  | 461
Duke Energy Carolinas | AROs – coal ash |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 1,391 |  |  |  |  | 1,227
Duke Energy Carolinas | Deferred Fuel Costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 1,614 |  |  |  |  | 339
Duke Energy Carolinas | Deferred Fuel Costs | NCUC |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  |  |  |  | $ 327 |  |
Duke Energy Carolinas | Deferred Fuel Costs | PSCSC |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  |  |  | $ 79 |  |  |
Duke Energy Carolinas | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 614 |  |  |  |  | 365
Duke Energy Carolinas | Storm cost securitized balance, net |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 220 |  |  |  |  | 232
Duke Energy Carolinas | Storm cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 93 |  |  |  |  | 22
Duke Energy Carolinas | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 228 |  |  |  |  | 171
Duke Energy Carolinas | Post-in-service carrying costs (PISCC) and deferred operating expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 30 |  |  |  |  | 31
Duke Energy Carolinas | Retired generation facilities |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 39 |  |  |  |  | 54
Duke Energy Carolinas | Deferred asset – Lee and Harris COLA |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 267 |  |  |  |  | 296
Duke Energy Carolinas | Advanced metering infrastructure (AMI) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 139 |  |  |  |  | 140
Duke Energy Carolinas | Customer connect project |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 62 |  |  |  |  | 66
Duke Energy Carolinas | Vacation accrual |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 84 |  |  |  |  | 83
Duke Energy Carolinas | Incremental COVID-19 expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 127 |  |  |  |  | 51
Duke Energy Carolinas | Nuclear deferral |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 90 |  |  |  |  | 78
Duke Energy Carolinas | COR settlement |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 88 |  |  |  |  | 91
Duke Energy Carolinas | Deferred coal ash handling system costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 67 |  |  |  |  | 67
Duke Energy Carolinas | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 235 |  |  |  |  | 166
Duke Energy Progress |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 5,414 |  |  |  |  | 4,651
Less: current portion |  | 690 |  |  |  |  | 533
Total noncurrent regulatory assets |  | 4,724 |  |  |  |  | 4,118
Total regulatory liabilities |  | 4,452 |  |  |  |  | 5,249
Less: current portion |  | 332 |  |  |  |  | 381
Total noncurrent regulatory liabilities |  | 4,120 |  |  |  |  | 4,868
Duke Energy Progress | Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 1,559 |  |  |  |  | 1,695
Duke Energy Progress | Costs of removal |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 2,269 |  |  |  |  | 2,955
Duke Energy Progress | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 252 |  |  |  |  | 155
Duke Energy Progress | Provision for rate refunds |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 28 |  |  |  |  | 87
Duke Energy Progress | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 344 |  |  |  |  | 357
Duke Energy Progress | AROs – coal ash |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 1,418 |  |  |  |  | 1,389
Duke Energy Progress | AROs – nuclear and other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 869 |  |  |  |  | 613
Duke Energy Progress | Deferred Fuel Costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 705 |  |  |  |  | 303
Duke Energy Progress | Deferred Fuel Costs | NCUC |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  |  | $ 251 |  |  |  |
Duke Energy Progress | Deferred Fuel Costs | PSCSC |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  |  |  |  |  | $ 44 |
Duke Energy Progress | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 417 |  |  |  |  | 351
Duke Energy Progress | Storm cost securitized balance, net |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 720 |  |  |  |  | 759
Duke Energy Progress | Storm cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 234 |  |  |  |  | 170
Duke Energy Progress | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 55 |  |  |  |  | 60
Duke Energy Progress | Post-in-service carrying costs (PISCC) and deferred operating expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 42 |  |  |  |  | 47
Duke Energy Progress | Retired generation facilities |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 149 |  |  |  |  | 171
Duke Energy Progress | Deferred asset – Lee and Harris COLA |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 21 |  |  |  |  | 21
Duke Energy Progress | Advanced metering infrastructure (AMI) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 81 |  |  |  |  | 92
Duke Energy Progress | Customer connect project |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 54 |  |  |  |  | 57
Duke Energy Progress | Vacation accrual |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 43 |  |  |  |  | 42
Duke Energy Progress | Incremental COVID-19 expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 78 |  |  |  |  | 28
Duke Energy Progress | Demand side management (DSM)/Energy efficiency (EE) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 180 |  |  |  |  | 218
Duke Energy Progress | NCEMPA deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 157 |  |  |  |  | 165
Duke Energy Progress | Nuclear deferral |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 64 |  |  |  |  | 42
Duke Energy Progress | COR settlement |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 32 |  |  |  |  | 32
Duke Energy Progress | Deferred coal ash handling system costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 25 |  |  |  |  | 23
Duke Energy Progress | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 70 |  |  |  |  | 68
Duke Energy Florida |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 3,565 |  |  |  |  | 2,288
Less: current portion |  | 1,143 |  |  |  |  | 497
Total noncurrent regulatory assets |  | 2,422 |  |  |  |  | 1,791
Total regulatory liabilities |  | 877 |  |  |  |  | 796
Less: current portion |  | 244 |  |  |  |  | 98
Total noncurrent regulatory liabilities |  | 633 |  |  |  |  | 698
Duke Energy Florida | Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 633 |  |  |  |  | 699
Duke Energy Florida | DOE Settlement |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 154 |  |  |  |  |
Duke Energy Florida | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 90 |  |  |  |  | 97
Duke Energy Florida | AROs – coal ash |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 11 |  |  |  |  | 10
Duke Energy Florida | AROs – nuclear and other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 15 |  |  |  |  | 7
Duke Energy Florida | Deferred Fuel Costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 1,355 |  |  |  |  | 415
Duke Energy Florida | Deferred Fuel Costs | FPSC |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 1,200 |  |  |  |  |
Duke Energy Florida | Deferred Fuel Costs | FPSC | Subsequent Event |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets | $ 795 |  |  |  |  |  |
Duke Energy Florida | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 342 |  |  |  |  | 374
Duke Energy Florida | Nuclear asset securitized balance, net |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 881 |  |  |  |  | 937
Duke Energy Florida | Storm cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 325 |  |  |  |  | 19
Duke Energy Florida | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 73 |  |  |  |  | 77
Duke Energy Florida | Retired generation facilities |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 94 |  |  |  |  | 94
Duke Energy Florida | Advanced metering infrastructure (AMI) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 30 |  |  |  |  | 38
Duke Energy Florida | Customer connect project |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 82 |  |  |  |  | 67
Duke Energy Florida | Costs of removal regulatory asset |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 221 |  |  |  |  | 107
Duke Energy Florida | Qualifying facility contract buyouts |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 81 |  |  |  |  | 94
Duke Energy Florida | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 55 |  |  |  |  | 49
Duke Energy Ohio |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 684 |  |  |  |  | 707
Less: current portion |  | 103 |  |  |  |  | 72
Total noncurrent regulatory assets |  | 581 |  |  |  |  | 635
Total regulatory liabilities |  | 633 |  |  |  |  | 801
Less: current portion |  | 99 |  |  |  |  | 62
Total noncurrent regulatory liabilities |  | 534 |  |  |  |  | 739
Duke Energy Ohio | Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 496 |  |  |  |  | 602
Duke Energy Ohio | Costs of removal |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 9 |  |  |  |  | 39
Duke Energy Ohio | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 21 |  |  |  |  | 21
Duke Energy Ohio | Provision for rate refunds |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  |  |  |  |  |  | 61
Duke Energy Ohio | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 107 |  |  |  |  | 78
Duke Energy Ohio | AROs – coal ash |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  |  |  |  |  |  | 33
Duke Energy Ohio | Deferred Fuel Costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 54 |  |  |  |  | 38
Duke Energy Ohio | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 129 |  |  |  |  | 133
Duke Energy Ohio | Storm cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 14 |  |  |  |  | 2
Duke Energy Ohio | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 2 |  |  |  |  | 5
Duke Energy Ohio | Post-in-service carrying costs (PISCC) and deferred operating expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 15 |  |  |  |  | 16
Duke Energy Ohio | Advanced metering infrastructure (AMI) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 18 |  |  |  |  | 24
Duke Energy Ohio | Customer connect project |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 54 |  |  |  |  | 41
Duke Energy Ohio | CEP deferral |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 190 |  |  |  |  | 161
Duke Energy Ohio | Deferred pipeline integrity costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 28 |  |  |  |  | 24
Duke Energy Ohio | Propane caverns |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 26 |  |  |  |  |
Duke Energy Ohio | Manufactured gas plant (MGP) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  |  |  |  |  |  | 104
Duke Energy Ohio | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 154 |  |  |  |  | 126
Duke Energy Indiana |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 1,124 |  |  |  |  | 1,555
Less: current portion |  | 249 |  |  |  |  | 277
Total noncurrent regulatory assets |  | 875 |  |  |  |  | 1,278
Total regulatory liabilities |  | 1,641 |  |  |  |  | 1,692
Less: current portion |  | 187 |  |  |  |  | 127
Total noncurrent regulatory liabilities |  | 1,454 |  |  |  |  | 1,565
Duke Energy Indiana | Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 840 |  |  |  |  | 908
Duke Energy Indiana | Costs of removal |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 531 |  |  |  |  | 575
Duke Energy Indiana | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 81 |  |  |  |  |
Duke Energy Indiana | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 104 |  |  |  |  | 113
Duke Energy Indiana | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 85 |  |  |  |  | 96
Duke Energy Indiana | AROs – coal ash |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 385 |  |  |  |  | 749
Duke Energy Indiana | Deferred Fuel Costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 138 |  |  |  |  | 158
Duke Energy Indiana | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 214 |  |  |  |  | 222
Duke Energy Indiana | Hedge cost deferrals |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 20 |  |  |  |  | 35
Duke Energy Indiana | Post-in-service carrying costs (PISCC) and deferred operating expenses |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 255 |  |  |  |  | 262
Duke Energy Indiana | Retired generation facilities |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 34 |  |  |  |  | 38
Duke Energy Indiana | Advanced metering infrastructure (AMI) |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 15 |  |  |  |  | 17
Duke Energy Indiana | Customer connect project |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 19 |  |  |  |  | 11
Duke Energy Indiana | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 44 |  |  |  |  | 63
Piedmont |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 511 |  |  |  |  | 457
Less: current portion |  | 119 |  |  |  |  | 141
Total noncurrent regulatory assets |  | 392 |  |  |  |  | 316
Total regulatory liabilities |  | 1,098 |  |  |  |  | 1,114
Less: current portion |  | 74 |  |  |  |  | 56
Total noncurrent regulatory liabilities |  | 1,024 |  |  |  |  | 1,058
Piedmont | Net regulatory liability related to income taxes |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 459 |  |  |  |  | 510
Piedmont | Costs of removal |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 573 |  |  |  |  | 572
Piedmont | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory liabilities |  | 66 |  |  |  |  | 32
Piedmont | AROs – nuclear and other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 27 |  |  |  |  | 22
Piedmont | Accrued pension and OPEB |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 119 |  |  |  |  | 82
Piedmont | Vacation accrual |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 12 |  |  |  |  | 12
Piedmont | Derivatives – natural gas supply contracts |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 168 |  |  |  |  | 139
Piedmont | Deferred pipeline integrity costs |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 93 |  |  |  |  | 84
Piedmont | Amounts due from customers |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | 57 |  |  |  |  | 85
Piedmont | Other |  |  |  |  |  |  |
Regulatory Assets Liabilities [Line Items] |  |  |  |  |  |  |
Total regulatory assets |  | $ 35 |  |  |  |  | $ 33

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