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Business Segments (Business Segment Data) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ 32,237 $ 30,357 $ 29,060
Less:      
Operation, maintenance and other 6,698 5,389 5,625
Depreciation and amortization 6,324 5,793 5,253
Property and other taxes 1,597 1,466 1,400
Impairment of assets and other charges (4) 38 85
Interest expense 3,634 3,384 3,014
Income Tax Expense 642 590 438
Noncontrolling interests 103 87 97
Preferred dividends 56 106 106
Preferred redemption costs 0 16 0
Add: Equity in (losses) earnings of unconsolidated affiliates 51 (9) 113
Add: Other 714 687 650
Segment income (loss) 4,911 4,395 4,126
Discontinued Operations 1 7 (1,391)
Net Income available to Duke Energy common stockholders 4,912 4,402 2,735
Add back: Net income attributable to noncontrolling interest 103 90 33
Net income 5,071 4,614 2,874
Capital expenditures 14,002 12,263 12,622
Segment assets 195,736 186,343 176,893
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 5,712 5,194 4,767
Nonregulated electric and other 307 318 291
Regulated electric (29,060) (27,787) (26,617)
Depreciation, amortization and accretion (including amortization of nuclear fuel) 7,704 6,419 6,084
Losses on sales of other assets 45 26 52
Fuel used in electric generation and purchased power      
Less:      
Cost of sales 8,058 9,206 9,086
Cost of natural gas      
Less:      
Cost of sales 983 565 593
Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,544 3,040 3,399
Less:      
Cost of sales 1,065 964 1,217
Operation, maintenance and other 811 671 713
Depreciation and amortization 823 676 666
Property and other taxes 61 50 59
Impairment of assets and other charges     0
Interest expense 243 229 213
Income Tax Expense 82 71 110
Add: Other 61 62 76
Segment income (loss) 520 441 497
Net income 520 441 497
Capital expenditures 1,332 935 961
Segment assets 16,346 15,727 14,811
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 602 512 607
Depreciation, amortization and accretion (including amortization of nuclear fuel) 827 679 669
Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,065 964 1,217
Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,797 2,545 2,507
Less:      
Operation, maintenance and other 490 485 478
Depreciation and amortization 466 403 367
Property and other taxes 432 400 364
Impairment of assets and other charges 0 0 3
Interest expense 203 192 169
Income Tax Expense 68 64 63
Add: Other 25 20 42
Segment income (loss) 338 341 334
Net income 338 341 334
Capital expenditures 929 815 939
Segment assets 13,446 12,768 12,216
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 406 405 397
Regulated electric (2,045) (1,905) (1,868)
Depreciation, amortization and accretion (including amortization of nuclear fuel) 470 408 371
Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 626 538 608
Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 199 142 163
Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 9,713 9,718 8,288
Less:      
Cost of sales 2,649 3,251 2,524
Operation, maintenance and other 2,002 1,740 1,774
Depreciation and amortization 1,903 1,768 1,593
Property and other taxes 349 346 320
Impairment of assets and other charges (11) 31 44
Interest expense 783 722 686
Income Tax Expense 194 226 141
Add: Other 264 249 264
Segment income (loss) 2,108 1,883 1,470
Net income 2,108 1,883 1,470
Capital expenditures 4,477 3,966 3,733
Segment assets 59,175 55,005 52,110
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 2,302 2,109 1,611
Depreciation, amortization and accretion (including amortization of nuclear fuel) 2,169 2,033 1,845
Losses on sales of other assets 6 2 26
Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,649 3,251 2,524
Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 14,509 13,633 13,544
Less:      
Cost of sales 4,267 4,755 5,026
Operation, maintenance and other 3,335 2,463 2,636
Depreciation and amortization 2,543 2,393 2,151
Property and other taxes 657 617 644
Impairment of assets and other charges 2 6 28
Interest expense 1,119 1,064 954
Income Tax Expense 485 426 377
Add: Other 314 262 228
Segment income (loss) 2,415 2,171 1,956
Net income 2,415 2,171 1,956
Capital expenditures 6,125 5,252 4,917
Segment assets 75,838 71,636 67,094
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 2,900 2,597 2,333
Depreciation, amortization and accretion (including amortization of nuclear fuel) 3,666 2,761 2,721
Losses on sales of other assets 27 27 27
Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 4,267 4,755 5,026
Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,386 7,017 6,488
Less:      
Cost of sales 2,518 2,409 2,203
Operation, maintenance and other 1,455 1,388 1,379
Depreciation and amortization 1,406 1,336 1,266
Property and other taxes 172 177 164
Impairment of assets and other charges 2 6 29
Interest expense 526 493 427
Income Tax Expense 223 189 149
Add: Other 198 145 127
Segment income (loss) 1,282 1,164 998
Net income 1,282 1,164 998
Capital expenditures 3,428 2,803 2,387
Segment assets 42,527 39,493 36,924
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 1,505 1,353 1,147
Depreciation, amortization and accretion (including amortization of nuclear fuel) 1,602 1,520 1,460
Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,518 2,409 2,203
Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,105 6,595 7,036
Less:      
Cost of sales 1,749 2,346 2,823
Operation, maintenance and other 1,865 1,055 1,239
Depreciation and amortization 1,137 1,057 885
Property and other taxes 486 440 480
Impairment of assets and other charges 0 0 (1)
Interest expense 479 457 413
Income Tax Expense 289 268 261
Add: Other 93 89 80
Segment income (loss) 1,193 1,061 1,016
Net income 1,193 1,061 1,016
Capital expenditures 2,698 2,449 2,529
Segment assets 29,656 28,569 26,601
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 1,482 1,329 1,277
Depreciation, amortization and accretion (including amortization of nuclear fuel) 2,063 1,239 1,260
Losses on sales of other assets 3 3 2
Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,749 2,346 2,823
Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,237 1,729 1,628
Less:      
Cost of sales 784 423 430
Operation, maintenance and other 408 359 344
Depreciation and amortization 282 261 237
Property and other taxes 67 55 59
Impairment of assets and other charges 0 0 (4)
Interest expense 193 185 165
Income Tax Expense 112 95 84
Add: Equity in (losses) earnings of unconsolidated affiliates 8 8 9
Add: Other 41 54 57
Segment income (loss) 440 413 379
Net income 440 413 379
Capital expenditures 807 1,025 1,036
Segment assets 12,470 11,799 11,067
Segment Reporting Information Assets [Abstract]      
Total income (loss) from continuing operations before income taxes 552 508 463
Nonregulated electric and other 28 27 25
Depreciation, amortization and accretion (including amortization of nuclear fuel) 285 264 239
Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 784 423 430
Operating Segments      
Less:      
Operation, maintenance and other   5,663 5,764
Depreciation and amortization   5,528 5,033
Property and other taxes   1,454 1,449
Impairment of assets and other charges   37 71
Interest expense   2,262 2,067
Income Tax Expense   919 858
Noncontrolling interests   87 97
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Equity in (losses) earnings of unconsolidated affiliates   (59) 47
Add: Other   600 604
Segment income (loss)   5,224 4,742
Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales   9,285 9,164
Operating Segments | Cost of natural gas      
Less:      
Cost of sales   565 593
Other      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 28 38 37
Less:      
Operation, maintenance and other (35) (79) 36
Depreciation and amortization 312 293 248
Property and other taxes 14 12 (49)
Impairment of assets and other charges 5 1 14
Interest expense 1,317 1,245 1,097
Income Tax Expense (366) (329) (420)
Noncontrolling interests 0 0 0
Preferred dividends 56 106 106
Preferred redemption costs   16  
Add: Equity in (losses) earnings of unconsolidated affiliates 36 50 66
Add: Other 117 229 216
Segment income (loss) (985) (829) (616)
Capital expenditures 335 261 995
Segment assets 4,320 4,202 4,095
Other | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Other | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Eliminations, Corporate and Reconciling Items      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 165 157 134
Eliminations And Reconciling Items      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 137 119 97
Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues (288) (283) (261)
Less:      
Operation, maintenance and other (199) (195) (175)
Depreciation and amortization (28) (28) (28)
Property and other taxes 1 0 0
Impairment of assets and other charges 0 0 0
Interest expense (82) (123) (150)
Income Tax Expense 0    
Noncontrolling interests 0 0 0
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Other (100) (142) (170)
Eliminations | Fuel used in electric generation and purchased power      
Less:      
Cost of sales (80) (79) (78)
Eliminations | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 10 5 18
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges     1
Interest expense 0 1 0
Income Tax Expense (3) (1) (5)
Add: Other (1) 0 (1)
Segment income (loss) (8) (5) (15)
Capital expenditures 0 0 0
Segment assets 25 1 (155)
Eliminations | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 8 10 9
Depreciation and amortization 1 (1) 0
Property and other taxes 0 0 0
Impairment of assets and other charges     1
Interest expense 1 (2) 0
Income Tax Expense (2) (1) (2)
Add: Other 0 0 (1)
Segment income (loss) (8) (6) (9)
Capital expenditures 0 0 0
Segment assets 135 51 (108)
Eliminations | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 43 30 85
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges 0 0 0
Interest expense 0 0 0
Income Tax Expense (11) (7) (21)
Add: Other (3) (3) (3)
Segment income (loss) (35) (26) (67)
Capital expenditures 0 0 0
Segment assets 400 223 202
Eliminations | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 18 21 20
Less:      
Operation, maintenance and other 55 50 82
Depreciation and amortization 0 0 0
Property and other taxes (1) 0 0
Impairment of assets and other charges 0 0 0
Interest expense 114 115 114
Income Tax Expense (38) (39) (49)
Add: Other 23 38 18
Segment income (loss) (89) (67) (109)
Capital expenditures 0 0 0
Segment assets 4,153 3,685 3,912
Eliminations | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 24 18 37
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges 0 0 0
Interest expense 0 1 0
Income Tax Expense (6) (5) (9)
Add: Other (2) 7 (1)
Segment income (loss) (20) (7) (29)
Capital expenditures 0 0 0
Segment assets 364 91 104
Eliminations | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 16 12 27
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges     0
Interest expense 0 0 0
Income Tax Expense (5) (3) (7)
Add: Other 2 3 (2)
Segment income (loss) (9) (6) (22)
Capital expenditures 0 0 0
Segment assets 134 20 239
Eliminations | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Eliminations | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0 0
Less:      
Operation, maintenance and other 15 4 8
Depreciation and amortization 0 0 0
Property and other taxes 0 0 0
Impairment of assets and other charges     0
Interest expense 0 0 0
Income Tax Expense (3) 1 0
Add: Equity in (losses) earnings of unconsolidated affiliates 8 8 9
Add: Other (5) 0 (2)
Segment income (loss) (9) 3 (1)
Capital expenditures 0 0 0
Segment assets 86 92 89
Eliminations | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Total Reportable Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 32,209 30,319 29,023
Total Reportable Segments | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 32,360 30,483 29,187
Less:      
Operation, maintenance and other 6,932    
Depreciation and amortization 6,040    
Property and other taxes 1,582    
Impairment of assets and other charges (9)    
Interest expense 2,399    
Income Tax Expense 1,008    
Noncontrolling interests 103    
Preferred dividends 0    
Add: Equity in (losses) earnings of unconsolidated affiliates 15    
Add: Other 697    
Segment income (loss) 5,896    
Capital expenditures 13,667 12,002 11,627
Segment assets 191,416 182,141 172,798
Total Reportable Segments | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 8,138    
Total Reportable Segments | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 983    
Total Reportable Segments | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,797 2,545 2,507
Less:      
Operation, maintenance and other 482 475 469
Depreciation and amortization 465 404 367
Property and other taxes 432 400 364
Impairment of assets and other charges     2
Interest expense 202 194 169
Income Tax Expense 70 65 65
Add: Other 25 20 43
Segment income (loss) 346 347 343
Capital expenditures 929 815 939
Segment assets 13,311 12,717 12,324
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 626 538 608
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 199 142 163
Total Reportable Segments | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 151 164 164
Electric Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 29,297 28,020 26,846
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates 0 (11) 7
Electric Utilities and Infrastructure | Litigation | Duke Energy Carolinas      
Less:      
Impairment of assets and other charges     35
Electric Utilities and Infrastructure | Litigation | Duke Energy Progress      
Less:      
Impairment of assets and other charges     33
Electric Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 29,357 28,093 26,921
Less:      
Operation, maintenance and other 6,414 5,185 5,309
Depreciation and amortization 5,605 5,128 4,684
Property and other taxes 1,418 1,305 1,320
Impairment of assets and other charges (9) 37 75
Interest expense 2,132 2,006 1,850
Income Tax Expense 862 820 742
Noncontrolling interests 104 88 99
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Equity in (losses) earnings of unconsolidated affiliates   (11) 7
Add: Other 644 542 538
Segment income (loss) 5,337 4,770 4,223
Capital expenditures 12,553 10,689 10,135
Segment assets 172,427 164,010 155,449
Electric Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 8,138 9,285 9,164
Electric Utilities and Infrastructure | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Electric Utilities and Infrastructure | Operating Segments | Nonoperating Income (Expense)      
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates   4  
Electric Utilities and Infrastructure | Operating Segments | Regulated and Unregulated Operating Revenue      
Segment Reporting Information Assets [Abstract]      
Customer Billing Adjustments   17  
Electric Utilities and Infrastructure | Operating Segments | Impairment Of Assets And Other Charges      
Segment Reporting Information Assets [Abstract]      
Rate Case Order Income (Expense)   (42)  
Electric Utilities and Infrastructure | Operating Segments | Operation, maintenance and other      
Segment Reporting Information Assets [Abstract]      
Rate Case Order Income (Expense)   (2)  
Electric Utilities and Infrastructure | Operating Segments | Interest Expense      
Segment Reporting Information Assets [Abstract]      
Rate Case Order Income (Expense)   11  
Electric Utilities and Infrastructure | Operating Segments | Equity In (Losses) Earnings Of Unconsolidated Affiliates      
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates   15  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,544 3,040 3,399
Less:      
Operation, maintenance and other 801 666 695
Depreciation and amortization 823 676 666
Property and other taxes 61 50 59
Impairment of assets and other charges     (1)
Interest expense 243 228 213
Income Tax Expense 85 72 115
Add: Other 62 62 77
Segment income (loss) 528 446 512
Add back: Net income attributable to noncontrolling interest   4  
Capital expenditures 1,332 935 961
Segment assets 16,321 15,726 14,966
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,065 964 1,217
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Regulated and Unregulated Operating Revenue      
Less:      
Segment income (loss)   29  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,045 1,905 1,868
Less:      
Operation, maintenance and other 366 366 351
Depreciation and amortization 318 273 257
Property and other taxes 335 306 294
Impairment of assets and other charges     2
Interest expense 131 126 116
Income Tax Expense 43 47 42
Add: Other 17 15 29
Segment income (loss) 243 264 227
Capital expenditures 600 535 520
Segment assets 8,575 8,211 7,978
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 626 538 608
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 0 0 0
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 9,713 9,718 8,288
Less:      
Operation, maintenance and other 1,959 1,710 1,689
Depreciation and amortization 1,903 1,768 1,593
Property and other taxes 349 346 320
Impairment of assets and other charges (11) 31 44
Interest expense 783 722 686
Income Tax Expense 205 233 162
Add: Other 267 252 267
Segment income (loss) 2,143 1,909 1,537
Capital expenditures 4,477 3,966 3,733
Segment assets 58,775 54,782 51,908
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,649 3,251 2,524
Electric Utilities and Infrastructure | Operating Segments | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 14,491 13,612 13,524
Less:      
Operation, maintenance and other 3,280 2,413 2,554
Depreciation and amortization 2,543 2,393 2,151
Property and other taxes 658 617 644
Impairment of assets and other charges 2 6 28
Interest expense 1,005 949 840
Income Tax Expense 523 465 426
Add: Other 291 224 210
Segment income (loss) 2,504 2,238 2,065
Capital expenditures 6,125 5,252 4,917
Segment assets 71,685 67,951 63,182
Electric Utilities and Infrastructure | Operating Segments | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 4,267 4,755 5,026
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,386 7,017 6,488
Less:      
Operation, maintenance and other 1,431 1,370 1,342
Depreciation and amortization 1,406 1,336 1,266
Property and other taxes 172 177 164
Impairment of assets and other charges 2 6 29
Interest expense 526 492 427
Income Tax Expense 229 194 158
Add: Other 200 138 128
Segment income (loss) 1,302 1,171 1,027
Capital expenditures 3,428 2,803 2,387
Segment assets 42,163 39,402 36,820
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,518 2,409 2,203
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,105 6,595 7,036
Less:      
Operation, maintenance and other 1,849 1,043 1,212
Depreciation and amortization 1,137 1,057 885
Property and other taxes 486 440 480
Impairment of assets and other charges     (1)
Interest expense 479 457 413
Income Tax Expense 294 271 268
Add: Other 91 86 82
Segment income (loss) 1,202 1,067 1,038
Capital expenditures 2,698 2,449 2,529
Segment assets 29,522 28,549 26,362
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,749 2,346 2,823
Electric Utilities and Infrastructure | Operating Segments | Litigation | Duke Energy Carolinas | Operation, Maintenance and Other      
Less:      
Add: Other     8
Electric Utilities and Infrastructure | Operating Segments | Litigation | Duke Energy Progress | Operation, Maintenance and Other      
Less:      
Add: Other     8
Electric Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 60 73 75
Gas Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,912 2,299 2,177
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates 15 (48) 40
Gas Utilities and Infrastructure | Impairments For Certain Renewable Natural Gas Investments      
Less:      
Add: Equity in (losses) earnings of unconsolidated affiliates   54  
Gas Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,003 2,390 2,266
Less:      
Operation, maintenance and other 518 478 455
Depreciation and amortization 435 400 349
Property and other taxes 164 149 129
Impairment of assets and other charges 0 0 (4)
Interest expense 267 256 217
Income Tax Expense 146 99 116
Noncontrolling interests (1) (1) (2)
Preferred dividends   0 0
Preferred redemption costs   0  
Add: Equity in (losses) earnings of unconsolidated affiliates 15 (48) 40
Add: Other 53 58 66
Segment income (loss) 559 454 519
Capital expenditures 1,114 1,313 1,492
Segment assets 18,989 18,131 17,349
Gas Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Gas Utilities and Infrastructure | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 983 565 593
Gas Utilities and Infrastructure | Operating Segments | Operation, maintenance and other      
Segment Reporting Information Assets [Abstract]      
Customer Billing Adjustments   1  
Gas Utilities and Infrastructure | Operating Segments | Other Segment Income (Expense)      
Segment Reporting Information Assets [Abstract]      
Customer Billing Adjustments   3  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 752 640 639
Less:      
Operation, maintenance and other 116 109 118
Depreciation and amortization 147 131 110
Property and other taxes 97 94 70
Impairment of assets and other charges     0
Interest expense 71 68 53
Income Tax Expense 27 18 23
Add: Other 8 5 14
Segment income (loss) 103 83 116
Capital expenditures 329 280 419
Segment assets 4,736 4,506 4,346
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0 0
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 199 142 163
Gas Utilities and Infrastructure | Operating Segments | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,237 1,729 1,628
Less:      
Operation, maintenance and other 393 355 336
Depreciation and amortization 282 261 237
Property and other taxes 67 55 59
Impairment of assets and other charges     (4)
Interest expense 193 185 165
Income Tax Expense 115 94 84
Add: Equity in (losses) earnings of unconsolidated affiliates 0 0 0
Add: Other 46 54 59
Segment income (loss) 449 410 380
Capital expenditures 807 1,025 1,036
Segment assets 12,384 11,707 10,978
Gas Utilities and Infrastructure | Operating Segments | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 784 423 430
Gas Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ 91 91 89
Other      
Less:      
Impairment of assets and other charges     14
Other | Operation, Maintenance and Other      
Less:      
Add: Other     $ 110
Other | Hurricane Helene      
Less:      
Operation, maintenance and other   $ 23