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Business Segments (Business Segment Data) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Segment Reporting Information [Line Items]          
Operating Revenues $ 7,172 $ 6,578 $ 14,843 $ 13,854  
Income From Continuing Operations 896 714 1,998 1,624  
Add: Noncontrolling interests (21) (16) (34) 27  
Add: Preferred stock dividend 14 14 53 53  
Loss From Discontinued Operations, net of tax (10) (948) (13) (1,093)  
Net Income (Loss) 921 (204) 2,072 557  
Segment assets 181,575   181,575   $ 176,893
Impairment of assets and other charges 43 0 44 8  
Operation, maintenance and other 1,320 1,375 2,699 2,685  
Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 608 589 1,286 1,298  
Income From Continuing Operations 77 71 171 171  
Net Income (Loss)     171 171  
Segment assets 12,601   12,601   $ 12,216
Operation, maintenance and other 121 121 247 244  
Total Reportable Segments          
Segment Reporting Information [Line Items]          
Operating Revenues 7,161 6,569 14,825 13,838  
Electric Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 6,802 6,232 13,587 12,613  
Gas Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 359 337 1,238 1,225  
Operating Segments | Total Reportable Segments          
Segment Reporting Information [Line Items]          
Operating Revenues 7,201 6,609 14,906 13,918  
Income From Continuing Operations 1,096 875 2,401 1,953  
Segment assets 177,370   177,370    
Operating Segments | Total Reportable Segments | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 608 589 1,286 1,298  
Income From Continuing Operations 78 72 174 173  
Segment assets 12,423   12,423    
Operating Segments | Electric Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 6,820 6,250 13,623 12,648  
Income From Continuing Operations 1,090 850 2,111 1,641  
Segment assets 159,770   159,770    
Operating Segments | Electric Utilities and Infrastructure | Impairment Of Assets And Other Charges          
Segment Reporting Information [Line Items]          
Income From Continuing Operations 42   42    
Operating Segments | Electric Utilities and Infrastructure | Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses          
Segment Reporting Information [Line Items]          
Income From Continuing Operations 2   2    
Operating Segments | Electric Utilities and Infrastructure | Nonoperating Income (Expense)          
Segment Reporting Information [Line Items]          
Income From Continuing Operations (11)   (11)    
Operating Segments | Electric Utilities and Infrastructure | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 476 465 934 939  
Income From Continuing Operations 69 54 124 103  
Segment assets 8,034   8,034    
Operating Segments | Gas Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 381 359 1,283 1,270  
Income From Continuing Operations 6 25 290 312  
Segment assets 17,600   17,600    
Operating Segments | Gas Utilities and Infrastructure | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 132 124 352 359  
Income From Continuing Operations 9 18 50 70  
Segment assets 4,389   4,389    
Other | Other | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 0 0 0 0  
Income From Continuing Operations (1) (1) (3) (2)  
Segment assets 13   13    
Corporate And Eliminations          
Segment Reporting Information [Line Items]          
Operating Revenues 40 34 78 65  
Income From Continuing Operations (200) (161) (403) (329)  
Segment assets 4,205   4,205    
Eliminations          
Segment Reporting Information [Line Items]          
Operating Revenues (69) (65) (141) (129)  
Income From Continuing Operations 0 0      
Segment assets 0   0    
Eliminations | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 0        
Income From Continuing Operations 0        
Segment assets 165   165    
Eliminations | Total Reportable Segments          
Segment Reporting Information [Line Items]          
Operating Revenues 40 40 81 80  
Eliminations | Electric Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 18 18 36 35  
Eliminations | Gas Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 22 22 45 45  
Eliminations | Other          
Segment Reporting Information [Line Items]          
Operating Revenues 29 25 60 49  
Other          
Segment Reporting Information [Line Items]          
Operating Revenues $ 11 $ 9 $ 18 $ 16