v3.26.1
Revenue (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers $ 8,995 $ 8,218
Revenue from sources other than contracts with customers 183 31
Total operating revenues 9,178 8,249
Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 5 8
Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 7,676 7,053
Total operating revenues 7,864 7,125
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 3,619 3,403
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 2,030 1,921
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 827 823
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 870 670
Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 330 236
Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 1,314 1,157
Total operating revenues 1,309 1,116
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 790 706
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 374 322
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 62 55
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 88 74
Duke Energy Carolinas    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 2,691 2,491
Revenue from sources other than contracts with customers 75 33
Total operating revenues 2,766 2,524
Duke Energy Carolinas | Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Carolinas | Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 2,691 2,491
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 1,160 1,127
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 699 701
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 327 334
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 166 149
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 339 180
Duke Energy Carolinas | Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
Duke Energy Carolinas | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
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
Duke Energy Carolinas | Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Progress Energy    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 3,809 3,408
Revenue from sources other than contracts with customers 116 59
Total operating revenues 3,925 3,467
Progress Energy | Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Progress Energy | Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 3,809 3,408
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 1,738 1,614
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 911 845
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 264 267
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 600 443
Progress Energy | Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 296 239
Progress Energy | Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
Progress Energy | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Progress Energy | Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Progress    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 2,231 1,995
Revenue from sources other than contracts with customers 70 23
Total operating revenues 2,301 2,018
Duke Energy Progress | Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Progress | Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 2,231 1,995
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 875 820
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 444 415
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 186 193
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 525 404
Duke Energy Progress | Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 201 163
Duke Energy Progress | Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
Duke Energy Progress | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
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
Duke Energy Progress | Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Florida    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 1,578 1,413
Revenue from sources other than contracts with customers 43 31
Total operating revenues 1,621 1,444
Duke Energy Florida | Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Florida | Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 1,578 1,413
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 863 794
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 467 430
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 78 74
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 75 39
Duke Energy Florida | Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 95 76
Duke Energy Florida | Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
Duke Energy Florida | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
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
Duke Energy Florida | Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Ohio    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 892 775
Revenue from sources other than contracts with customers (13) (9)
Total operating revenues 879 766
Duke Energy Ohio | Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Ohio | Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 576 497
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 302 282
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 153 142
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 34 33
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 60 22
Duke Energy Ohio | Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 27 18
Duke Energy Ohio | Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 316 278
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 213 186
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 83 70
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 16 16
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
Duke Energy Ohio | Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 4 6
Duke Energy Indiana    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 945 855
Revenue from sources other than contracts with customers 21 3
Total operating revenues 966 858
Duke Energy Indiana | Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Duke Energy Indiana | Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 945 855
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 420 379
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 267 233
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 204 187
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 43 57
Duke Energy Indiana | Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 11 (1)
Duke Energy Indiana | Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
Duke Energy Indiana | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 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
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
Duke Energy Indiana | Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 1,011 888
Revenue from sources other than contracts with customers 0 (31)
Total operating revenues 1,011 857
Piedmont | Other    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont | Electric Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont | Electric Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 0 0
Piedmont | Gas Utilities and Infrastructure    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 1,011 888
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 577 520
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 291 252
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 46 39
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers 9 24
Piedmont | Gas Utilities and Infrastructure | Other revenues    
Disaggregation of Revenue [Line Items]    
Revenue from contracts with customers $ 88 $ 53