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Revenue (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers $ 7,151 $ 6,473 $ 14,683 $ 13,574
Revenue from sources other than contracts with customers 21 105 160 280
Total operating revenues 7,172 6,578 14,843 13,854
Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 6,791 6,130 13,469 12,397
Total operating revenues 6,802 6,232 13,587 12,613
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,092 2,740 6,207 5,591
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,013 1,876 3,947 3,707
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 869 827 1,691 1,718
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 524 498 1,078 1,048
Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 293 189 546 333
Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 349 334 1,196 1,161
Total operating revenues 359 337 1,238 1,225
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 182 179 702 686
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 103 100 343 333
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 32 30 79 77
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 32 25 72 65
Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers     18  
Other        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 11 9   16
Duke Energy Carolinas        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,314 1,817 4,666 3,738
Revenue from sources other than contracts with customers (17) 11 38 24
Total operating revenues 2,297 1,828 4,704 3,762
Duke Energy Carolinas | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 2,314 1,817 4,666 3,738
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 959 715 2,017 1,539
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 755 607 1,472 1,195
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 374 320 714 616
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 127 126 265 261
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 99 49 198 127
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 3,349 3,181 6,502 6,184
Revenue from sources other than contracts with customers 8 31 83 76
Total operating revenues 3,357 3,212 6,585 6,260
Progress Energy | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 3,349 3,181 6,502 6,184
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,625 1,555 3,142 2,976
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 933 914 1,799 1,755
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 267 274 533 546
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 337 294 692 642
Progress Energy | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 187 144 336 265
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 1,660 1,417 3,405 2,946
Revenue from sources other than contracts with customers (24) 8 19 12
Total operating revenues 1,636 1,425 3,424 2,958
Duke Energy Progress | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,660 1,417 3,405 2,946
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 661 539 1,403 1,146
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 427 369 849 727
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 183 180 360 357
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 298 259 624 578
Duke Energy Progress | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 91 70 169 138
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 1,689 1,764 3,097 3,238
Revenue from sources other than contracts with customers 27 18 55 54
Total operating revenues 1,716 1,782 3,152 3,292
Duke Energy Florida | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 1,689 1,764 3,097 3,238
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 964 1,016 1,739 1,830
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 506 545 950 1,028
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 84 94 173 189
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 39 35 68 64
Duke Energy Florida | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 96 74 167 127
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 583 563 1,276 1,274
Revenue from sources other than contracts with customers 25 26 10 24
Total operating revenues 608 589 1,286 1,298
Duke Energy Ohio | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 451 439 924 915
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 240 208 493 442
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 144 141 296 276
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 39 56 71 127
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 10 12 24 21
Duke Energy Ohio | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 18 22 40 49
Duke Energy Ohio | Gas Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 132 124 352 359
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 86 82 233 244
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 31 31 88 89
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 6 6 17 15
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 9 5 14 11
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 727 749 1,480 1,715
Revenue from sources other than contracts with customers 20 31 26 40
Total operating revenues 747 780 1,506 1,755
Duke Energy Indiana | Electric Utilities and Infrastructure        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 727 749 1,480 1,715
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 269 262 556 634
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | General        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 180 212 381 482
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 190 177 373 428
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 49 66 97 124
Duke Energy Indiana | Electric Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 39 32 73 47
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 223 218 860 817
Revenue from sources other than contracts with customers 21 18 60 94
Total operating revenues 244 236 920 911
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 223 218 860 817
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 96 97 469 442
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 72 69 255 244
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 24 24 62 61
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 8 23 16 46
Piedmont | Gas Utilities and Infrastructure | Other revenues        
Disaggregation of Revenue [Line Items]        
Revenue from contracts with customers 23 5 58 24
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