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Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 24,703 | $ 23,480 | $ 24,348
Revenue from sources other than contracts with customers | 394 | 388 | 731
Total operating revenues | 25,097 | 23,868 | 25,079
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total operating revenues | 1,129 | 1,069 | 1,037
Electric Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 22,474 | 21,637 | 22,347
Total operating revenues | 22,570 | 21,687 | 22,798
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 10,097 | 9,806 | 9,863
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 6,375 | 6,194 | 6,431
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,924 | 2,859 | 3,071
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,199 | 1,864 | 2,212
Electric Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 879 | 914 | 770
Total operating revenues | 977 | 944 | 855
Gas Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,983 | 1,590 | 1,754
Total operating revenues | 2,022 | 1,653 | 1,770
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,131 | 930 | 976
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 561 | 446 | 508
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 158 | 127 | 141
Gas Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 133 | 87 | 129
Total operating revenues | 87 | 57 | 84
Commercial Renewables |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 217 | 227 | 223
Total operating revenues | 476 | 502 | 487
Commercial Renewables | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total operating revenues | 65 | 68 | 98
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 29 | 26 | 24
Total operating revenues | 29 | 26 | 24
Duke Energy Carolinas |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 7,145 | 7,028 | 7,241
Revenue from sources other than contracts with customers | (43) | (13) | 154
Total operating revenues | 7,102 | 7,015 | 7,395
Duke Energy Carolinas | Electric Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 7,145 | 7,028 | 7,241
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 3,054 | 2,997 | 3,044
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,210 | 2,233 | 2,244
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,145 | 1,137 | 1,215
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 472 | 380 | 462
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 264 | 281 | 276
Progress Energy |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 10,962 | 10,521 | 10,883
Revenue from sources other than contracts with customers | 95 | 106 | 319
Total operating revenues | 11,057 | 10,627 | 11,202
Progress Energy | Electric Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 10,962 | 10,521 | 10,883
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 5,084 | 5,017 | 4,998
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,883 | 2,779 | 2,935
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 894 | 901 | 934
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,385 | 1,228 | 1,468
Progress Energy | Electric Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 716 | 596 | 548
Duke Energy Progress |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 5,719 | 5,348 | 5,785
Revenue from sources other than contracts with customers | 61 | 74 | 172
Total operating revenues | 5,780 | 5,422 | 5,957
Duke Energy Progress | Electric Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 5,719 | 5,348 | 5,785
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,156 | 2,059 | 2,144
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,378 | 1,312 | 1,368
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 634 | 649 | 675
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,164 | 1,034 | 1,281
Duke Energy Progress | Electric Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 387 | 294 | 317
Duke Energy Florida |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 5,243 | 5,173 | 5,098
Revenue from sources other than contracts with customers | 16 | 15 | 133
Total operating revenues | 5,259 | 5,188 | 5,231
Duke Energy Florida | Electric Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 5,243 | 5,173 | 5,098
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,928 | 2,958 | 2,854
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,505 | 1,467 | 1,567
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 260 | 252 | 259
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 221 | 194 | 187
Duke Energy Florida | Electric Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 329 | 302 | 231
Duke Energy Ohio |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 2,026 | 1,870 | 1,940
Revenue from sources other than contracts with customers | 11 | (12) | 0
Total operating revenues | 2,037 | 1,858 | 1,940
Duke Energy Ohio | Electric Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,481 | 1,419 | 1,457
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 767 | 726 | 733
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 440 | 442 | 451
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 135 | 137 | 147
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 56 | 32 | 46
Duke Energy Ohio | Electric Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 83 | 82 | 80
Duke Energy Ohio | Gas Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 545 | 451 | 483
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 354 | 300 | 315
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 143 | 117 | 130
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 20 | 17 | 19
Duke Energy Ohio | Gas Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 28 | 17 | 19
Duke Energy Indiana |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 3,134 | 2,783 | 2,987
Revenue from sources other than contracts with customers | 40 | 12 | 17
Total operating revenues | 3,174 | 2,795 | 3,004
Duke Energy Indiana | Electric Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 3,134 | 2,783 | 2,987
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,188 | 1,064 | 1,087
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 825 | 740 | 802
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 750 | 683 | 774
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 285 | 224 | 235
Duke Energy Indiana | Electric Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 86 | 72 | 89
Piedmont |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,469 | 1,173 | 1,322
Revenue from sources other than contracts with customers | 100 | 124 | 59
Total operating revenues | 1,569 | 1,297 | 1,381
Piedmont | Gas Utilities and Infrastructure |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 1,469 | 1,173 | 1,322
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 777 | 630 | 661
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 418 | 329 | 378
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 137 | 110 | 122
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | 92 | 34 | 51
Piedmont | Gas Utilities and Infrastructure | Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from contracts with customers | $ 45 | $ 70 | $ 110

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