v3.26.1
Business Segments (Business Segment Data) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ 9,178 $ 8,249  
Less:      
Operation, maintenance and other 1,752 1,499  
Depreciation and amortization 1,689 1,512  
Property and other taxes 452 428  
Interest expense 968 889  
Income tax expense (benefit) 333 193  
Noncontrolling interests 27 25  
Preferred dividends 14 14  
Equity in earnings of unconsolidated affiliates 7 11  
Add: Other 517 138  
Segment income (loss) 1,523 1,365  
Loss From Discontinued Operations, net of tax 13 0  
Net Income Available to Duke Energy Corporation Common Stockholders 1,536 1,365  
Income (loss) attributable to noncontrolling interest 27 25  
Net Income 1,577 1,404  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 4,088 3,148  
Total Assets 198,048 195,736 $ 195,736
Gain on sale of business 368    
Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,419 2,099  
Cost of natural gas      
Less:      
Cost of sales 525 374  
Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,766 2,524  
Less:      
Cost of sales 931 803  
Operation, maintenance and other 613 484  
Depreciation and amortization 526 432  
Property and other taxes 106 102  
Interest expense 218 200  
Income tax expense (benefit) 11 51  
Add: Other 65 61  
Segment income (loss) 426 513  
Net Income 426 513  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 1,474 1,019  
Total Assets 60,718   59,175
Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 931 803  
Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,925 3,467  
Less:      
Cost of sales 1,311 1,106  
Operation, maintenance and other 836 688  
Depreciation and amortization 682 631  
Property and other taxes 181 172  
Interest expense 291 275  
Income tax expense (benefit) 98 110  
Noncontrolling interests 5    
Add: Other 72 61  
Segment income (loss) 593 546  
Income (loss) attributable to noncontrolling interest 5 0  
Net Income 598 546  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 1,725 1,409  
Total Assets 76,906   75,838
Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,311 1,106  
Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,301 2,018  
Less:      
Cost of sales 863 725  
Operation, maintenance and other 508 398  
Depreciation and amortization 386 357  
Property and other taxes 59 60  
Interest expense 135 128  
Income tax expense (benefit) 40 56  
Add: Other 44 37  
Segment income (loss) 354 331  
Net Income 354 331  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 990 849  
Total Assets 43,016   42,527
Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 863 725  
Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,621 1,444  
Less:      
Cost of sales 448 381  
Operation, maintenance and other 324 286  
Depreciation and amortization 296 274  
Property and other taxes 123 112  
Interest expense 128 118  
Income tax expense (benefit) 63 58  
Add: Other 18 19  
Segment income (loss) 257 234  
Net Income 257 234  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 735 559  
Total Assets 30,134   29,656
Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 448 381  
Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 879 766  
Less:      
Operation, maintenance and other 139 124  
Depreciation and amortization 121 112  
Property and other taxes 117 116  
Interest expense 52 47  
Income tax expense (benefit) 31 22  
Add: Other 5 5  
Segment income (loss) 130 100  
Net Income 130 100  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 212 224  
Total Assets 13,514 13,446 13,446
Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 173 149  
Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 121 101  
Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 966 858  
Less:      
Cost of sales 370 260  
Operation, maintenance and other 190 195  
Depreciation and amortization 205 192  
Property and other taxes 19 18  
Interest expense 64 59  
Income tax expense (benefit) 18 18  
Add: Other 11 10  
Segment income (loss) 111 126  
Net Income 111 126  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 364 234  
Total Assets 16,776   16,346
Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 370 260  
Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,011 857  
Less:      
Cost of sales 404 272  
Operation, maintenance and other 95 96  
Depreciation and amortization 74 70  
Property and other taxes 26 18  
Interest expense 48 47  
Income tax expense (benefit) 258 76  
Equity in earnings of unconsolidated affiliates 2 2  
Add: Other 662 11  
Segment income (loss) 770 291  
Net Income 770 291  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 229 182  
Total Assets 10,706   12,470
Gain on sale of business 652    
Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 404 272  
Other      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 5 8  
Less:      
Operation, maintenance and other (41) 2  
Depreciation and amortization 83 77  
Property and other taxes 2 3  
Interest expense 349 318  
Income tax expense (benefit) (88) (87)  
Noncontrolling interests 0 0  
Preferred dividends 14 14  
Equity in earnings of unconsolidated affiliates 1 6  
Add: Other 13 19  
Segment income (loss) (263) (260)  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 75 85  
Total Assets 5,730   4,320
Other | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Other | Cost of natural gas      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 42 42  
Eliminations, Corporate and Reconciling Items | Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 12 10  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 1 0  
Income tax expense (benefit) (3) (2)  
Add: Other 0 0  
Segment income (loss) (10) (8)  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 0 0  
Total Assets 286   400
Eliminations, Corporate and Reconciling Items | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3 5  
Less:      
Operation, maintenance and other 16 15  
Depreciation and amortization 0 0  
Property and other taxes (1) 0  
Interest expense 29 29  
Income tax expense (benefit) (9) (8)  
Noncontrolling interests 0    
Add: Other 11 0  
Segment income (loss) (21) (31)  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 0 0  
Total Assets 3,967   4,153
Eliminations, Corporate and Reconciling Items | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 7 7  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 0  
Income tax expense (benefit) (2) (2)  
Add: Other 0 (2)  
Segment income (loss) (5) (7)  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 0 0  
Total Assets 132   364
Eliminations, Corporate and Reconciling Items | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 5 4  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 1 0  
Income tax expense (benefit) (2) (2)  
Add: Other 1 (3)  
Segment income (loss) (3) (5)  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 0 0  
Total Assets 79   134
Eliminations, Corporate and Reconciling Items | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 2 3  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 0  
Income tax expense (benefit) 0 (1)  
Add: Other 0 (1)  
Segment income (loss) (2) (3)  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 0 0  
Total Assets 74   135
Eliminations, Corporate and Reconciling Items | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items | Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 3 2  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 (1)  
Income tax expense (benefit) (1) 0  
Add: Other 0 0  
Segment income (loss) (2) (1)  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 0 0  
Total Assets 272   25
Eliminations, Corporate and Reconciling Items | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations, Corporate and Reconciling Items | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 2 2  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 0  
Income tax expense (benefit) 0 0  
Equity in earnings of unconsolidated affiliates 2 2  
Add: Other 0 0  
Segment income (loss) 0 0  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 0 0  
Total Assets 360   86
Eliminations, Corporate and Reconciling Items | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations and Reconciling Items      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues (37) (34)  
Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues (75) (73)  
Less:      
Operation, maintenance and other (51) (52)  
Depreciation and amortization (7) (6)  
Property and other taxes 0 0  
Interest expense (19) (24)  
Income tax expense (benefit) 0    
Noncontrolling interests 0 0  
Preferred dividends 0 0  
Equity in earnings of unconsolidated affiliates   0  
Add: Other (23) (29)  
Segment income (loss) 0 0  
Eliminations | Fuel used in electric generation and purchased power      
Less:      
Cost of sales (21) (20)  
Eliminations | Cost of natural gas      
Less:      
Cost of sales 0 0  
Total Reportable Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 9,173 8,241  
Total Reportable Segments | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 9,211 8,280  
Less:      
Operation, maintenance and other 1,844 1,549  
Depreciation and amortization 1,613 1,441  
Property and other taxes 450 425  
Interest expense 638 595  
Income tax expense (benefit) 421 280  
Noncontrolling interests 27 25  
Preferred dividends 0 0  
Equity in earnings of unconsolidated affiliates 6 5  
Add: Other 527 148  
Segment income (loss) 1,786 1,625  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 4,013 3,063  
Total Assets 192,318 191,416  
Total Reportable Segments | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,440 2,119  
Total Reportable Segments | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 525 374  
Total Reportable Segments | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 879 766  
Less:      
Operation, maintenance and other 137 121  
Depreciation and amortization 121 112  
Property and other taxes 117 116  
Interest expense 52 47  
Income tax expense (benefit) 31 23  
Add: Other 5 6  
Segment income (loss) 132 103  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 212 224  
Total Assets 13,440 13,311  
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 173 149  
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 121 101  
Total Reportable Segments | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues (38) (39)  
Electric Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,864 7,125  
Electric Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,878 7,140  
Less:      
Operation, maintenance and other 1,709 1,424  
Depreciation and amortization 1,498 1,334  
Property and other taxes 393 378  
Interest expense 571 530  
Income tax expense (benefit) 127 189  
Noncontrolling interests 27 25  
Preferred dividends 0 0  
Equity in earnings of unconsolidated affiliates 0    
Add: Other 141 135  
Segment income (loss) 1,254 1,276  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 3,734 2,814  
Total Assets 175,573   172,427
Electric Utilities and Infrastructure | Operating Segments | Operations, maintenance and other      
Less:      
Segment income (loss) 150    
Tax benefit 47    
Electric Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,440 2,119  
Electric Utilities and Infrastructure | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 0 0  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,766 2,524  
Less:      
Operation, maintenance and other 601 474  
Depreciation and amortization 526 432  
Property and other taxes 106 102  
Interest expense 217 200  
Income tax expense (benefit) 14 53  
Add: Other 65 61  
Segment income (loss) 436 521  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 1,474 1,019  
Total Assets 60,432   58,775
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 931 803  
Electric Utilities and Infrastructure | Operating Segments | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,922 3,462  
Less:      
Operation, maintenance and other 820 673  
Depreciation and amortization 682 631  
Property and other taxes 182 172  
Interest expense 262 246  
Income tax expense (benefit) 107 118  
Noncontrolling interests 5    
Add: Other 61 61  
Segment income (loss) 614 577  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 1,725 1,409  
Total Assets 72,939   71,685
Electric Utilities and Infrastructure | Operating Segments | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,311 1,106  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,301 2,018  
Less:      
Operation, maintenance and other 501 391  
Depreciation and amortization 386 357  
Property and other taxes 59 60  
Interest expense 135 128  
Income tax expense (benefit) 42 58  
Add: Other 44 39  
Segment income (loss) 359 338  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 990 849  
Total Assets 42,884   42,163
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 863 725  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,621 1,444  
Less:      
Operation, maintenance and other 319 282  
Depreciation and amortization 296 274  
Property and other taxes 123 112  
Interest expense 127 118  
Income tax expense (benefit) 65 60  
Add: Other 17 22  
Segment income (loss) 260 239  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 735 559  
Total Assets 30,055   29,522
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 448 381  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 562 487  
Less:      
Operation, maintenance and other 97 92  
Depreciation and amortization 82 76  
Property and other taxes 87 86  
Interest expense 34 31  
Income tax expense (benefit) 16 9  
Add: Other 4 4  
Segment income (loss) 77 48  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 162 157  
Total Assets 8,631   8,575
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 173 149  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 0 0  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 966 858  
Less:      
Operation, maintenance and other 187 193  
Depreciation and amortization 205 192  
Property and other taxes 19 18  
Interest expense 64 60  
Income tax expense (benefit) 19 18  
Add: Other 11 10  
Segment income (loss) 113 127  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 364 234  
Total Assets 16,504   16,321
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 370 260  
Electric Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues (14) (15)  
Gas Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,309 1,116  
Gas Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,333 1,140  
Less:      
Operation, maintenance and other 135 125  
Depreciation and amortization 115 107  
Property and other taxes 57 47  
Interest expense 67 65  
Income tax expense (benefit) 294 91  
Noncontrolling interests 0 0  
Preferred dividends 0 0  
Equity in earnings of unconsolidated affiliates 6 5  
Add: Other 386 13  
Segment income (loss) 532 349  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 279 249  
Total Assets 16,745   18,989
Income taxes related to sale of investment assets 196    
Gas Utilities and Infrastructure | Operating Segments | Gains on sales of other assets, and other, net      
Less:      
Gain on sale of business 6    
Gas Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Gas Utilities and Infrastructure | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 525 374  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 317 279  
Less:      
Operation, maintenance and other 40 29  
Depreciation and amortization 39 36  
Property and other taxes 30 30  
Interest expense 18 16  
Income tax expense (benefit) 15 14  
Add: Other 1 2  
Segment income (loss) 55 55  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 50 67  
Total Assets 4,809   4,736
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 121 101  
Gas Utilities and Infrastructure | Operating Segments | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,011 857  
Less:      
Operation, maintenance and other 93 94  
Depreciation and amortization 74 70  
Property and other taxes 26 18  
Interest expense 48 47  
Income tax expense (benefit) 258 76  
Equity in earnings of unconsolidated affiliates 0 0  
Add: Other 662 11  
Segment income (loss) 770 291  
Capital investments expenditures and acquisitions for the three months ended March 31, 2025 229 182  
Total Assets 10,346   $ 12,384
Gas Utilities and Infrastructure | Operating Segments | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 404 272  
Gas Utilities and Infrastructure | Operating Segments | Piedmont Tennessee Disposal Group | Gains on sales of other assets, and other, net      
Less:      
Gain on sale of business 368    
Gas Utilities and Infrastructure | Operating Segments | Piedmont Tennessee Disposal Group | Property and other taxes      
Less:      
Gain on sale of business 7    
Gas Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ (24) $ (24)