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Revenue (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 $ 28,675 $ 24,486 $ 23,253
Revenue from sources other than contracts with customers                 93 135 113
Total operating revenues $ 7,351 $ 7,842 $ 6,564 $ 7,011 $ 6,117 $ 6,834 $ 5,638 $ 6,032 28,768 24,621 23,366
Other                      
Disaggregation of Revenue [Line Items]                      
Total operating revenues                 1,411 1,064 1,001
Electric Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 25,888 22,474 21,637
Total operating revenues                 25,990 22,570 21,687
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 11,377 10,097 9,806
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 7,356 6,375 6,194
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 3,504 2,924 2,859
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 2,856 2,199 1,864
Electric Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 795 879 914
Total operating revenues                 1,106 977 944
Gas Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 2,757 1,983 1,590
Total operating revenues                 2,748 2,022 1,653
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,462 1,131 930
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 765 561 446
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 170 158 127
Gas Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 360 133 87
Total operating revenues                 305 87 57
Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 30 29 26
Total operating revenues                 30 29 26
Duke Energy Carolinas                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 7,855 7,145 7,028
Revenue from sources other than contracts with customers                 2 (43) (13)
Total operating revenues                 7,857 7,102 7,015
Duke Energy Carolinas | Electric Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 7,855 7,145 7,028
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 3,275 3,054 2,997
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 2,396 2,210 2,233
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,251 1,145 1,137
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 561 472 380
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 372 264 281
Progress Energy                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 13,082 10,962 10,521
Revenue from sources other than contracts with customers                 43 95 106
Total operating revenues                 13,125 11,057 10,627
Progress Energy | Electric Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 13,082 10,962 10,521
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 5,812 5,084 5,017
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 3,396 2,883 2,779
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,095 894 901
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,785 1,385 1,228
Progress Energy | Electric Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 994 716 596
Duke Energy Progress                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 6,742 5,719 5,348
Revenue from sources other than contracts with customers                 11 61 74
Total operating revenues                 6,753 5,780 5,422
Duke Energy Progress | Electric Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 6,742 5,719 5,348
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 2,378 2,156 2,059
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,480 1,378 1,312
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 770 634 649
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,346 1,164 1,034
Duke Energy Progress | Electric Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 768 387 294
Duke Energy Florida                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 6,340 5,243 5,173
Revenue from sources other than contracts with customers                 13 16 15
Total operating revenues                 6,353 5,259 5,188
Duke Energy Florida | Electric Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 6,340 5,243 5,173
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 3,434 2,928 2,958
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,916 1,505 1,467
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 325 260 252
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 439 221 194
Duke Energy Florida | Electric Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 226 329 302
Duke Energy Ohio                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 2,486 2,026 1,870
Revenue from sources other than contracts with customers                 28 11 (12)
Total operating revenues                 2,514 2,037 1,858
Duke Energy Ohio | Electric Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,769 1,481 1,419
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 862 767 726
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 517 440 442
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 202 135 137
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 127 56 32
Duke Energy Ohio | Electric Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 61 83 82
Duke Energy Ohio | Gas Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 717 545 451
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 488 354 300
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 180 143 117
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 24 20 17
Duke Energy Ohio | Gas Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 25 28 17
Duke Energy Indiana                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 3,837 3,134 2,783
Revenue from sources other than contracts with customers                 85 40 12
Total operating revenues                 3,922 3,174 2,795
Duke Energy Indiana | Electric Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 3,837 3,134 2,783
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,430 1,188 1,064
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 1,049 825 740
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 956 750 683
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 383 285 224
Duke Energy Indiana | Electric Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 19 86 72
Piedmont                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 2,068 1,469 1,173
Revenue from sources other than contracts with customers                 56 100 124
Total operating revenues                 2,124 1,569 1,297
Piedmont | Gas Utilities and Infrastructure                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 2,068 1,469 1,173
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 974 777 630
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 585 418 329
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 144 137 110
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 94 92 34
Piedmont | Gas Utilities and Infrastructure | Other                      
Disaggregation of Revenue [Line Items]                      
Revenue from contracts with customers                 $ 271 $ 45 $ 70