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Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | $ 28,674 | $ 28,675 | $ 24,486
Other revenue sources |  |  |  |  |  |  |  |  | 386 | 93 | 135
Total operating revenues | $ 7,212 | $ 7,994 | $ 6,578 | $ 7,276 | $ 7,351 | $ 7,842 | $ 6,564 | $ 7,011 | 29,060 | 28,768 | 24,621
Electric Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 26,546 | 25,888 | 22,474
Total operating revenues |  |  |  |  |  |  |  |  | 26,846 | 25,990 | 22,570
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 12,098 | 11,377 | 10,097
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 7,895 | 7,356 | 6,375
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 3,416 | 3,504 | 2,924
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 2,175 | 2,856 | 2,199
Electric Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 962 | 795 | 879
Gas Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 2,091 | 2,757 | 1,983
Total operating revenues |  |  |  |  |  |  |  |  | 2,177 | 2,748 | 2,022
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,226 | 1,462 | 1,131
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 605 | 765 | 561
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 141 | 170 | 158
Gas Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 119 | 360 | 133
Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 37 | 30 | 29
Duke Energy Carolinas |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 8,223 | 7,855 | 7,145
Other revenue sources |  |  |  |  |  |  |  |  | 65 | 2 | (43)
Total operating revenues |  |  |  |  |  |  |  |  | 8,288 | 7,857 | 7,102
Duke Energy Carolinas | Electric Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 8,223 | 7,855 | 7,145
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 3,409 | 3,275 | 3,054
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 2,670 | 2,396 | 2,210
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,334 | 1,251 | 1,145
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 492 | 561 | 472
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 318 | 372 | 264
Progress Energy |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 13,355 | 13,082 | 10,962
Other revenue sources |  |  |  |  |  |  |  |  | 189 | 43 | 95
Total operating revenues |  |  |  |  |  |  |  |  | 13,544 | 13,125 | 11,057
Progress Energy | Electric Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 13,355 | 13,082 | 10,962
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 6,510 | 5,812 | 5,084
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 3,762 | 3,396 | 2,883
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,105 | 1,095 | 894
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,388 | 1,785 | 1,385
Progress Energy | Electric Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 590 | 994 | 716
Duke Energy Progress |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 6,426 | 6,742 | 5,719
Other revenue sources |  |  |  |  |  |  |  |  | 62 | 11 | 61
Total operating revenues |  |  |  |  |  |  |  |  | 6,488 | 6,753 | 5,780
Duke Energy Progress | Electric Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 6,426 | 6,742 | 5,719
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 2,540 | 2,378 | 2,156
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,588 | 1,480 | 1,378
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 733 | 770 | 634
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,240 | 1,346 | 1,164
Duke Energy Progress | Electric Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 325 | 768 | 387
Duke Energy Florida |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 6,929 | 6,340 | 5,243
Other revenue sources |  |  |  |  |  |  |  |  | 107 | 13 | 16
Total operating revenues |  |  |  |  |  |  |  |  | 7,036 | 6,353 | 5,259
Duke Energy Florida | Electric Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 6,929 | 6,340 | 5,243
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 3,970 | 3,434 | 2,928
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 2,174 | 1,916 | 1,505
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 372 | 325 | 260
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 148 | 439 | 221
Duke Energy Florida | Electric Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 265 | 226 | 329
Duke Energy Ohio |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 2,468 | 2,486 | 2,026
Other revenue sources |  |  |  |  |  |  |  |  | 39 | 28 | 11
Total operating revenues |  |  |  |  |  |  |  |  | 2,507 | 2,514 | 2,037
Duke Energy Ohio | Electric Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,829 | 1,769 | 1,481
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 947 | 862 | 767
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 552 | 517 | 440
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 191 | 202 | 135
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 46 | 127 | 56
Duke Energy Ohio | Electric Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 93 | 61 | 83
Duke Energy Ohio | Gas Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 639 | 717 | 545
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 435 | 488 | 354
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 154 | 180 | 143
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 26 | 24 | 20
Duke Energy Ohio | Gas Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 24 | 25 | 28
Duke Energy Indiana |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 3,335 | 3,837 | 3,134
Other revenue sources |  |  |  |  |  |  |  |  | 64 | 85 | 40
Total operating revenues |  |  |  |  |  |  |  |  | 3,399 | 3,922 | 3,174
Duke Energy Indiana | Electric Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 3,335 | 3,837 | 3,134
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,233 | 1,430 | 1,188
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 911 | 1,049 | 825
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 786 | 956 | 750
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 248 | 383 | 285
Duke Energy Indiana | Electric Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 157 | 19 | 86
Piedmont |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,483 | 2,068 | 1,469
Other revenue sources |  |  |  |  |  |  |  |  | 145 | 56 | 100
Total operating revenues |  |  |  |  |  |  |  |  | 1,628 | 2,124 | 1,569
Piedmont | Gas Utilities and Infrastructure |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 1,483 | 2,068 | 1,469
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 792 | 974 | 777
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 450 | 585 | 418
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 115 | 144 | 137
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | 31 | 94 | 92
Piedmont | Gas Utilities and Infrastructure | Other |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total revenue from contracts with customers |  |  |  |  |  |  |  |  | $ 95 | $ 271 | $ 45

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