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Revenue (Disaggregation of Revenue) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers $ 31,741 $ 30,050 $ 28,674
Other revenue sources 496 307 386
Total operating revenues 32,237 30,357 29,060
Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 28,863 27,769 26,546
Total operating revenues 29,297 28,020 26,846
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 13,756 12,901 12,098
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 8,337 8,207 7,895
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,423 3,427 3,416
Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,402 2,205 2,175
Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 945 1,029 962
Gas Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,850 2,243 2,091
Total operating revenues 2,912 2,299 2,177
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,596 1,320 1,226
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 808 639 605
Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 190 158 141
Gas Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 256 126 119
Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 28 38 37
Duke Energy Carolinas      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 9,501 9,615 8,223
Other revenue sources 212 103 65
Total operating revenues 9,713 9,718 8,288
Duke Energy Carolinas | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 9,501 9,615 8,223
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 4,124 4,150 3,409
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,885 3,080 2,670
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,422 1,488 1,334
Duke Energy Carolinas | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 621 547 492
Duke Energy Carolinas | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 449 350 318
Progress Energy      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 14,302 13,464 13,355
Other revenue sources 207 169 189
Total operating revenues 14,509 13,633 13,544
Progress Energy | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 14,302 13,464 13,355
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 7,067 6,592 6,510
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,825 3,718 3,762
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,065 1,066 1,105
Progress Energy | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,475 1,414 1,388
Progress Energy | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 870 674 590
Duke Energy Progress      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 7,312 6,979 6,426
Other revenue sources 74 38 62
Total operating revenues 7,386 7,017 6,488
Duke Energy Progress | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 7,312 6,979 6,426
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,965 2,872 2,540
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,732 1,754 1,588
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 750 742 733
Duke Energy Progress | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,353 1,268 1,240
Duke Energy Progress | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 512 343 325
Duke Energy Florida      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 6,990 6,485 6,929
Other revenue sources 115 110 107
Total operating revenues 7,105 6,595 7,036
Duke Energy Florida | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 6,990 6,485 6,929
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 4,102 3,720 3,970
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,093 1,964 2,174
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 315 324 372
Duke Energy Florida | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 122 146 148
Duke Energy Florida | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 358 331 265
Duke Energy Ohio      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,767 2,527 2,468
Other revenue sources 30 18 39
Total operating revenues 2,797 2,545 2,507
Duke Energy Ohio | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,021 1,888 1,829
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,116 1,009 947
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 603 590 552
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 142 149 191
Duke Energy Ohio | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 92 51 46
Duke Energy Ohio | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 68 89 93
Duke Energy Ohio | Gas Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 746 639 639
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 496 427 435
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 181 153 154
Duke Energy Ohio | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 44 33 26
Duke Energy Ohio | Gas Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 25 26 24
Duke Energy Indiana      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,511 2,992 3,335
Other revenue sources 33 48 64
Total operating revenues 3,544 3,040 3,399
Duke Energy Indiana | Electric Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 3,511 2,992 3,335
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,450 1,149 1,233
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,024 818 911
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 794 724 786
Duke Energy Indiana | Electric Utilities and Infrastructure | Electric Utilities and Infrastructure | Wholesale      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 218 194 248
Duke Energy Indiana | Electric Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 25 107 157
Piedmont      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,162 1,637 1,483
Other revenue sources 75 92 145
Total operating revenues 2,237 1,729 1,628
Piedmont | Gas Utilities and Infrastructure      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 2,162 1,637 1,483
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Residential      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 1,100 893 792
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Commercial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 627 486 450
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Industrial      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 146 125 115
Piedmont | Gas Utilities and Infrastructure | Gas Utilities and Infrastructure | Power Generation      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers 34 33 31
Piedmont | Gas Utilities and Infrastructure | Other      
Disaggregation of Revenue [Line Items]      
Total revenue from contracts with customers $ 255 $ 100 $ 95