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Business Segments (Business Segment Data) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ 8,249 $ 7,671  
Less:      
Operation, maintenance and other 1,499 1,380  
Depreciation and amortization 1,512 1,387  
Property and other taxes 428 386  
Interest expense 889 817  
Income Tax Expense 193 178  
Noncontrolling interests 25 13  
Preferred dividends 14 39  
Equity in earnings of unconsolidated affiliates 11 17  
Add: Other 138 181  
Segment income (loss) 1,365 1,102  
Loss From Discontinued Operations, net of tax   (3)  
Net Income Available to Duke Energy Corporation Common Stockholders 1,365 1,099  
Income (loss) attributable to noncontrolling interest 25 13  
Net income 1,404 1,151  
Capital expenditures 3,148 3,215  
Total Assets 187,476 178,670 $ 186,343
Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,099 2,335  
Cost of natural gas      
Less:      
Cost of sales 374 232  
Duke Energy Indiana      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 858 759  
Less:      
Cost of sales 260 271  
Operation, maintenance and other 195 180  
Depreciation and amortization 192 169  
Property and other taxes 18 14  
Interest expense 59 57  
Income Tax Expense 18 14  
Add: Other 10 13  
Segment income (loss) 126 67  
Net income 126 67  
Capital expenditures 234 275  
Total Assets 15,790 14,940 15,727
Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 260 271  
Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 766 678  
Less:      
Operation, maintenance and other 124 126  
Depreciation and amortization 112 99  
Property and other taxes 116 102  
Interest expense 47 45  
Income Tax Expense 22 19  
Add: Other 5 6  
Segment income (loss) 100 94  
Net income 100 94  
Capital expenditures 224 217  
Total Assets 12,880 12,305 12,768
Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 149 138  
Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 101 61  
Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,524 2,407  
Less:      
Cost of sales 803 860  
Operation, maintenance and other 484 452  
Depreciation and amortization 432 397  
Property and other taxes 102 94  
Interest expense 200 180  
Income Tax Expense 51 56  
Add: Other 61 62  
Segment income (loss) 513 430  
Net income 513 430  
Capital expenditures 1,019 952  
Total Assets 55,412 52,692 55,005
Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 803 860  
Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,467 3,228  
Less:      
Cost of sales 1,106 1,143  
Operation, maintenance and other 688 628  
Depreciation and amortization 631 587  
Property and other taxes 172 158  
Interest expense 275 260  
Income Tax Expense 110 86  
Add: Other 61 69  
Segment income (loss) 546 435  
Net income 546 435  
Capital expenditures 1,409 1,373  
Total Assets 73,345 67,722 71,636
Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,106 1,143  
Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,018 1,788  
Less:      
Cost of sales 725 620  
Operation, maintenance and other 398 375  
Depreciation and amortization 357 339  
Property and other taxes 60 51  
Interest expense 128 120  
Income Tax Expense 56 48  
Add: Other 37 37  
Segment income (loss) 331 272  
Net income 331 272  
Capital expenditures 849 704  
Total Assets 40,877 37,494 39,493
Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 725 620  
Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,444 1,436  
Less:      
Cost of sales 381 523  
Operation, maintenance and other 286 251  
Depreciation and amortization 274 248  
Property and other taxes 112 106  
Interest expense 118 111  
Income Tax Expense 58 43  
Add: Other 19 25  
Segment income (loss) 234 179  
Net income 234 179  
Capital expenditures 559 669  
Total Assets 28,740 26,498 28,569
Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 381 523  
Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 857 676  
Less:      
Cost of sales 272 170  
Operation, maintenance and other 96 95  
Depreciation and amortization 70 62  
Property and other taxes 18 15  
Interest expense 47 45  
Income Tax Expense 76 60  
Equity in earnings of unconsolidated affiliates 2 2  
Add: Other 11 15  
Segment income (loss) 291 246  
Net income 291 246  
Capital expenditures 182 294  
Total Assets 11,909 11,192 $ 11,799
Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 272 170  
Other      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 8 7  
Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues (73) (72)  
Less:      
Operation, maintenance and other (52) (48)  
Depreciation and amortization (6) (7)  
Property and other taxes 0 0  
Interest expense (24) (37)  
Income Tax Expense 0 0  
Noncontrolling interests 0 0  
Equity in earnings of unconsolidated affiliates   (1)  
Add: Other (29) (39)  
Eliminations | Fuel used in electric generation and purchased power      
Less:      
Cost of sales (20) (20)  
Eliminations | Duke Energy Indiana      
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 (1) 0  
Income Tax Expense 0 0  
Add: Other 0 0  
Segment income (loss) (1) (2)  
Capital expenditures 0 0  
Total Assets 8 19  
Eliminations | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 3 1  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 1  
Income Tax Expense (1) 0  
Add: Other (1) 0  
Segment income (loss) (3) (2)  
Capital expenditures 0 0  
Total Assets 53 20  
Eliminations | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 0 0  
Eliminations | Duke Energy Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 10 11  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 0  
Income Tax Expense (2) (2)  
Add: Other 0 0  
Segment income (loss) (8) (9)  
Capital expenditures 0 0  
Total Assets 377 205  
Eliminations | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 5 4  
Less:      
Operation, maintenance and other 15 12  
Depreciation and amortization 0 0  
Property and other taxes 0 1  
Interest expense 29 29  
Income Tax Expense (8) (9)  
Add: Other 0 8  
Segment income (loss) (31) (21)  
Capital expenditures 0 0  
Total Assets 5,004 3,861  
Eliminations | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 7 6  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 0  
Income Tax Expense (2) (2)  
Add: Other (2) 1  
Segment income (loss) (7) (3)  
Capital expenditures 0 0  
Total Assets 1,089 104  
Eliminations | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 4 4  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 0  
Income Tax Expense (2) (2)  
Add: Other (3) 0  
Segment income (loss) (5) (2)  
Capital expenditures 0 0  
Total Assets 187 27  
Eliminations | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Eliminations | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 0 0  
Less:      
Operation, maintenance and other 2 0  
Depreciation and amortization 0 0  
Property and other taxes 0 0  
Interest expense 0 0  
Income Tax Expense 0 1  
Equity in earnings of unconsolidated affiliates 2 2  
Add: Other 0 0  
Segment income (loss) 0 1  
Capital expenditures 0 0  
Total Assets 91 93  
Eliminations | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Total Reportable Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 8,241 7,664  
Total Reportable Segments | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 8,280 7,705  
Less:      
Operation, maintenance and other 1,549 1,446  
Depreciation and amortization 1,441 1,323  
Property and other taxes 425 383  
Interest expense 595 560  
Income Tax Expense 280 242  
Noncontrolling interests 25 13  
Preferred dividends 0 0  
Equity in earnings of unconsolidated affiliates 5 1  
Add: Other 148 153  
Segment income (loss) 1,625 1,305  
Capital expenditures 3,063 3,128  
Total Assets 183,027 174,070  
Total Reportable Segments | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,119 2,355  
Total Reportable Segments | Operating Segments | Cost of natural gas      
Less:      
Cost of sales 374 232  
Total Reportable Segments | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 766 678  
Less:      
Operation, maintenance and other 121 125  
Depreciation and amortization 112 99  
Property and other taxes 116 102  
Interest expense 47 44  
Income Tax Expense 23 19  
Add: Other 6 6  
Segment income (loss) 103 96  
Capital expenditures 224 217  
Total Assets 12,827 12,285  
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 149 138  
Total Reportable Segments | Operating Segments | Duke Energy Ohio | Cost of natural gas      
Less:      
Cost of sales 101 61  
Total Reportable Segments | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 39 41  
Electric Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,125 6,785  
Electric Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 7,140 6,803  
Less:      
Operation, maintenance and other 1,424 1,317  
Depreciation and amortization 1,334 1,225  
Property and other taxes 378 337  
Interest expense 530 499  
Income Tax Expense 189 173  
Noncontrolling interests 25 13  
Equity in earnings of unconsolidated affiliates   1  
Add: Other 135 136  
Segment income (loss) 1,276 1,021  
Capital expenditures 2,814 2,746  
Total Assets 164,794 156,606  
Electric Utilities and Infrastructure | Operating Segments | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 2,119 2,355  
Electric Utilities and Infrastructure | Operating Segments | 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 858 759  
Less:      
Operation, maintenance and other 193 178  
Depreciation and amortization 192 169  
Property and other taxes 18 14  
Interest expense 60 57  
Income Tax Expense 18 14  
Add: Other 10 13  
Segment income (loss) 127 69  
Capital expenditures 234 275  
Total Assets 15,782 14,921  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Indiana | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 260 271  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 487 458  
Less:      
Operation, maintenance and other 92 93  
Depreciation and amortization 76 66  
Property and other taxes 86 71  
Interest expense 31 29  
Income Tax Expense 9 10  
Add: Other 4 4  
Segment income (loss) 48 55  
Capital expenditures 157 137  
Total Assets 8,303 7,935  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Ohio | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 149 138  
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 Carolinas      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,524 2,407  
Less:      
Operation, maintenance and other 474 441  
Depreciation and amortization 432 397  
Property and other taxes 102 94  
Interest expense 200 180  
Income Tax Expense 53 58  
Add: Other 61 62  
Segment income (loss) 521 439  
Capital expenditures 1,019 952  
Total Assets 55,035 52,487  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Carolinas | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 803 860  
Electric Utilities and Infrastructure | Operating Segments | Progress Energy      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 3,462 3,224  
Less:      
Operation, maintenance and other 673 616  
Depreciation and amortization 631 587  
Property and other taxes 172 157  
Interest expense 246 231  
Income Tax Expense 118 95  
Add: Other 61 61  
Segment income (loss) 577 456  
Capital expenditures 1,409 1,373  
Total Assets 68,341 63,861  
Electric Utilities and Infrastructure | Operating Segments | Progress Energy | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 1,106 1,143  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 2,018 1,788  
Less:      
Operation, maintenance and other 391 369  
Depreciation and amortization 357 339  
Property and other taxes 60 51  
Interest expense 128 120  
Income Tax Expense 58 50  
Add: Other 39 36  
Segment income (loss) 338 275  
Capital expenditures 849 704  
Total Assets 39,788 37,390  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Progress | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 725 620  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,444 1,436  
Less:      
Operation, maintenance and other 282 247  
Depreciation and amortization 274 248  
Property and other taxes 112 106  
Interest expense 118 111  
Income Tax Expense 60 45  
Add: Other 22 25  
Segment income (loss) 239 181  
Capital expenditures 559 669  
Total Assets 28,553 26,471  
Electric Utilities and Infrastructure | Operating Segments | Duke Energy Florida | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 381 523  
Electric Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 15 18  
Gas Utilities and Infrastructure      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,116 879  
Gas Utilities and Infrastructure | Operating Segments      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 1,140 902  
Less:      
Operation, maintenance and other 125 129  
Depreciation and amortization 107 98  
Property and other taxes 47 46  
Interest expense 65 61  
Income Tax Expense 91 69  
Noncontrolling interests 0 0  
Equity in earnings of unconsolidated affiliates 5    
Add: Other 13 17  
Segment income (loss) 349 284  
Capital expenditures 249 382  
Total Assets 18,233 17,464  
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 374 232  
Gas Utilities and Infrastructure | Operating Segments | Duke Energy Ohio      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 279 220  
Less:      
Operation, maintenance and other 29 32  
Depreciation and amortization 36 33  
Property and other taxes 30 31  
Interest expense 16 15  
Income Tax Expense 14 9  
Add: Other 2 2  
Segment income (loss) 55 41  
Capital expenditures 67 80  
Total Assets 4,524 4,350  
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 101 61  
Gas Utilities and Infrastructure | Operating Segments | Piedmont      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 857 676  
Less:      
Operation, maintenance and other 94 95  
Depreciation and amortization 70 62  
Property and other taxes 18 15  
Interest expense 47 45  
Income Tax Expense 76 59  
Equity in earnings of unconsolidated affiliates 0 0  
Add: Other 11 15  
Segment income (loss) 291 245  
Capital expenditures 182 294  
Total Assets 11,818 11,099  
Gas Utilities and Infrastructure | Operating Segments | Piedmont | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 272 170  
Gas Utilities and Infrastructure | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 24 23  
Other | Other      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues 42 38  
Other | Corporate And Eliminations      
Less:      
Operation, maintenance and other 2 (18)  
Depreciation and amortization 77 71  
Property and other taxes 3 3  
Interest expense 318 294  
Income Tax Expense (87) (64)  
Noncontrolling interests 0 0  
Preferred dividends 14 39  
Equity in earnings of unconsolidated affiliates 6 17  
Add: Other 19 67  
Segment income (loss) (260) (203)  
Capital expenditures 85 87  
Total Assets 4,449 4,600  
Other | Corporate And Eliminations | Fuel used in electric generation and purchased power      
Less:      
Cost of sales 0 0  
Other | Corporate And Eliminations | Cost of natural gas      
Less:      
Cost of sales 0 0  
Other | Eliminations      
Segment Reporting Information, Profit (Loss) [Abstract]      
Operating Revenues $ 34 $ 31