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Revenue (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 8,127 $ 7,977 $ 22,810 $ 21,551
Revenue from sources other than contracts with customers 27 17 187 297
Total operating revenues 8,154 7,994 22,997 21,848
Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 7,806 7,675 21,275 20,072
Total operating revenues 7,833 7,695 21,420 20,308
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,738 3,602 9,945 9,193
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,287 2,229 6,234 5,936
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 924 912 2,615 2,630
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 620 647 1,698 1,695
Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 237 285 783 618
Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 309 294 1,505 1,455
Total operating revenues 309 291 1,547 1,516
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 157 152 859 838
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 91 88 434 421
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 36 26 115 103
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 25 28 97 93
Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     30  
Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 12 8   24
Duke Energy Carolinas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,677 2,378 7,343 6,116
Revenue from sources other than contracts with customers 30 15 68 39
Total operating revenues 2,707 2,393 7,411 6,155
Duke Energy Carolinas | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,677 2,378 7,343 6,116
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,173 988 3,190 2,527
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 859 779 2,331 1,974
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 416 395 1,130 1,011
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 158 141 423 402
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 71 75 269 202
Duke Energy Carolinas | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Carolinas | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     0  
Duke Energy Carolinas | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0   0
Progress Energy        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,843 4,027 10,345 10,211
Revenue from sources other than contracts with customers 17 28 100 104
Total operating revenues 3,860 4,055 10,445 10,315
Progress Energy | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,843 4,027 10,345 10,211
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,973 2,043 5,115 5,019
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,035 1,089 2,834 2,844
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 275 298 808 844
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 394 422 1,086 1,064
Progress Energy | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 166 175 502 440
Progress Energy | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Progress Energy | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     0  
Progress Energy | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0   0
Duke Energy Progress        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,930 1,890 5,335 4,836
Revenue from sources other than contracts with customers (16) (4) 3 8
Total operating revenues 1,914 1,886 5,338 4,844
Duke Energy Progress | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,930 1,890 5,335 4,836
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 811 756 2,214 1,902
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 485 467 1,334 1,194
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 196 203 556 560
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 350 364 974 942
Duke Energy Progress | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 88 100 257 238
Duke Energy Progress | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Progress | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     0  
Duke Energy Progress | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0   0
Duke Energy Florida        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,913 2,137 5,010 5,375
Revenue from sources other than contracts with customers 27 27 82 81
Total operating revenues 1,940 2,164 5,092 5,456
Duke Energy Florida | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,913 2,137 5,010 5,375
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,162 1,287 2,901 3,117
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 550 622 1,500 1,650
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 79 95 252 284
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 44 58 112 122
Duke Energy Florida | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 78 75 245 202
Duke Energy Florida | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Florida | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     0  
Duke Energy Florida | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0   0
Duke Energy Ohio        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 613 572 1,889 1,846
Revenue from sources other than contracts with customers (8) 5 2 29
Total operating revenues 605 577 1,891 1,875
Duke Energy Ohio | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 505 467 1,429 1,382
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 275 268 768 710
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 152 135 448 411
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 39 28 110 155
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 15 12 39 33
Duke Energy Ohio | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 24 24 64 73
Duke Energy Ohio | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 108 105 460 464
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 74 73 307 317
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 23 24 111 113
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 6 4 23 19
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Ohio | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 5 4 19 15
Duke Energy Ohio | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     0  
Duke Energy Ohio | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0   0
Duke Energy Indiana        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 828 844 2,308 2,559
Revenue from sources other than contracts with customers 8 7 34 47
Total operating revenues 836 851 2,342 2,606
Duke Energy Indiana | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 828 844 2,308 2,559
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 316 303 872 937
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 243 224 624 706
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 193 190 566 618
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 53 71 150 195
Duke Energy Indiana | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 23 56 96 103
Duke Energy Indiana | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Duke Energy Indiana | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     0  
Duke Energy Indiana | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0   0
Piedmont        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 209 199 1,069 1,016
Revenue from sources other than contracts with customers 10 9 70 103
Total operating revenues 219 208 1,139 1,119
Piedmont | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 0 0 0 0
Piedmont | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 209 199 1,069 1,016
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 83 80 552 522
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 68 65 323 309
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 30 23 92 84
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 8 23 24 69
Piedmont | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 20 8 78 32
Piedmont | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     $ 0  
Piedmont | Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 0 $ 0   $ 0