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Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | $ 6,658 | $ 6,792 | $ 17,817 | $ 18,485
Revenue from sources other than contracts with customers | 63 | 148 | 274 | 491
Total operating revenues | 6,721 | 6,940 | 18,091 | 18,976
Electric Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 6,378 | 6,492 | 16,538 | 17,074
Total operating revenues | 6,371 | 6,569 | 16,571 | 17,357
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 2,936 | 2,923 | 7,451 | 7,597
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,804 | 1,885 | 4,691 | 4,896
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 797 | 869 | 2,148 | 2,339
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 603 | 617 | 1,535 | 1,685
Electric Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 238 | 198 | 713 | 557
Gas Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 216 | 223 | 1,089 | 1,236
Total operating revenues | 217 | 225 | 1,122 | 1,239
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 112 | 113 | 631 | 673
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 64 | 68 | 308 | 359
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 24 | 26 | 92 | 103
Gas Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 16 | 16 | 58 | 101
Commercial Renewables |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 57 | 69 | 170 | 157
Total operating revenues | 126 | 138 | 378 | 362
Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 7 | 8 | 20 | 18
Total operating revenues | 7 | 8 | 20 | 18
Duke Energy Carolinas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 2,068 | 2,140 | 5,423 | 5,535
Revenue from sources other than contracts with customers | (10) | 22 | (7) | 84
Total operating revenues | 2,058 | 2,162 | 5,416 | 5,619
Duke Energy Carolinas | Electric Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 2,068 | 2,140 | 5,423 | 5,535
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 883 | 892 | 2,316 | 2,331
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 664 | 687 | 1,720 | 1,714
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 342 | 372 | 871 | 927
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 117 | 113 | 332 | 341
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 62 | 76 | 184 | 222
Progress Energy |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 3,179 | 3,167 | 8,039 | 8,334
Revenue from sources other than contracts with customers | 18 | 75 | 78 | 224
Total operating revenues | 3,197 | 3,242 | 8,117 | 8,558
Progress Energy | Electric Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 3,179 | 3,167 | 8,039 | 8,334
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,550 | 1,522 | 3,792 | 3,879
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 805 | 843 | 2,080 | 2,225
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 245 | 255 | 673 | 708
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 412 | 429 | 1,018 | 1,133
Progress Energy | Electric Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 167 | 118 | 476 | 389
Duke Energy Progress |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,612 | 1,651 | 4,151 | 4,446
Revenue from sources other than contracts with customers | 14 | 37 | 56 | 113
Total operating revenues | 1,626 | 1,688 | 4,207 | 4,559
Duke Energy Progress | Electric Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,612 | 1,651 | 4,151 | 4,446
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 616 | 625 | 1,578 | 1,657
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 384 | 399 | 1,001 | 1,044
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 179 | 189 | 487 | 514
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 358 | 368 | 877 | 992
Duke Energy Progress | Electric Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 75 | 70 | 208 | 239
Duke Energy Florida |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,567 | 1,516 | 3,888 | 3,888
Revenue from sources other than contracts with customers |  | 32 | 9 | 99
Total operating revenues | 1,567 | 1,548 | 3,897 | 3,987
Duke Energy Florida | Electric Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 1,567 | 1,516 | 3,888 | 3,888
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 934 | 897 | 2,214 | 2,222
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 421 | 444 | 1,079 | 1,181
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 66 | 66 | 186 | 194
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 54 | 61 | 141 | 141
Duke Energy Florida | Electric Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 92 | 48 | 268 | 150
Duke Energy Ohio |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 481 | 494 | 1,405 | 1,454
Revenue from sources other than contracts with customers | (8) | (5) | (11) | (1)
Total operating revenues | 473 | 489 | 1,394 | 1,453
Duke Energy Ohio | Electric Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 400 | 413 | 1,081 | 1,102
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 213 | 215 | 558 | 563
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 119 | 127 | 336 | 335
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 35 | 40 | 103 | 109
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 10 | 13 | 22 | 36
Duke Energy Ohio | Electric Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 23 | 18 | 62 | 59
Duke Energy Ohio | Gas Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 81 | 81 | 324 | 352
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 55 | 53 | 214 | 229
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 20 | 21 | 86 | 96
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 3 | 4 | 12 | 14
Duke Energy Ohio | Gas Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 3 | 3 | 12 | 13
Duke Energy Indiana |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 762 | 808 | 2,067 | 2,281
Revenue from sources other than contracts with customers | (1) | (1) | 3 | 8
Total operating revenues | 761 | 807 | 2,070 | 2,289
Duke Energy Indiana | Electric Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 762 | 808 | 2,067 | 2,281
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 289 | 294 | 785 | 825
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 212 | 225 | 554 | 619
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 175 | 204 | 502 | 595
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 64 | 63 | 163 | 176
Duke Energy Indiana | Electric Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 22 | 22 | 63 | 66
Piedmont Natural Gas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 144 | 157 | 792 | 924
Revenue from sources other than contracts with customers | 18 | 11 | 79 | 32
Total operating revenues | 162 | 168 | 871 | 956
Piedmont Natural Gas | Gas Utilities and Infrastructure |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 144 | 157 | 792 | 924
Piedmont Natural Gas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 57 | 59 | 417 | 443
Piedmont Natural Gas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 44 | 47 | 222 | 263
Piedmont Natural Gas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 22 | 25 | 80 | 91
Piedmont Natural Gas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | 10 | 13 | 27 | 39
Piedmont Natural Gas | Gas Utilities and Infrastructure | Other revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenue from contracts with customers | $ 11 | $ 13 | $ 46 | $ 88

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