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Business Segments (Business Segment Data) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Dec. 31, 2023
Segment Reporting Information [Line Items]          
Operating Revenues $ 8,154 $ 7,994 $ 22,997 $ 21,848  
Income From Continuing Operations 1,204 1,403 3,202 3,027  
Add: Noncontrolling interests (34) (69) (68) (42)  
Add: Preferred dividends 39 39 92 92  
Less: Preferred Redemption Costs 16 0 16 0  
Loss From Discontinued Operations, net of tax 22 (190) 9 (1,283)  
Net Income 1,315 1,321 3,387 1,878  
Segment assets 183,566   183,566   $ 176,893
Impairment of assets and other charges (5) 88 39 96  
Operation, maintenance and other 1,409 1,428 4,108 4,113  
Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 605 577 1,891 1,875  
Income From Continuing Operations 52 80 223 251  
Net Income     223 251  
Segment assets 12,611   12,611   $ 12,216
Operation, maintenance and other 131 114 378 358  
Total Reportable Segments          
Segment Reporting Information [Line Items]          
Operating Revenues 8,142 7,986 22,967 21,824  
Electric Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 7,833 7,695 21,420 20,308  
Gas Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 309 291 1,547 1,516  
Operating Segments | Total Reportable Segments          
Segment Reporting Information [Line Items]          
Operating Revenues 8,184 8,028 23,090 21,946  
Income From Continuing Operations 1,426 1,462 3,827 3,415  
Segment assets 179,323   179,323    
Operating Segments | Total Reportable Segments | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 605 577 1,891 1,875  
Income From Continuing Operations 53 82 227 255  
Segment assets 12,552   12,552    
Operating Segments | Electric Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 7,852 7,715 21,475 20,363  
Income From Continuing Operations 1,451 1,447 3,562 3,088  
Segment assets 161,471   161,471    
Operating Segments | Electric Utilities and Infrastructure | Regulated and Unregulated Operating Revenue          
Segment Reporting Information [Line Items]          
Income From Continuing Operations 17   17    
Operating Segments | Electric Utilities and Infrastructure | Impairment Of Assets And Other Charges          
Segment Reporting Information [Line Items]          
Income From Continuing Operations   95 42 95  
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   16 2 16  
Operating Segments | Electric Utilities and Infrastructure | Nonoperating Income (Expense)          
Segment Reporting Information [Line Items]          
Income From Continuing Operations     (11)    
Operating Segments | Electric Utilities and Infrastructure | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 497 472 1,431 1,411  
Income From Continuing Operations 57 65 181 168  
Segment assets 8,096   8,096    
Operating Segments | Gas Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 332 313 1,615 1,583  
Income From Continuing Operations (25) 15 265 327  
Segment assets 17,852   17,852    
Operating Segments | Gas Utilities and Infrastructure | Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses          
Segment Reporting Information [Line Items]          
Income From Continuing Operations 1   1    
Operating Segments | Gas Utilities and Infrastructure | Nonoperating Income (Expense)          
Segment Reporting Information [Line Items]          
Income From Continuing Operations 3   3    
Operating Segments | Gas Utilities and Infrastructure | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 108 105 460 464  
Income From Continuing Operations (4) 17 46 87  
Segment assets 4,456   4,456    
Operating Segments | Other | Preferred Stock Redemption Premium          
Segment Reporting Information [Line Items]          
Income From Continuing Operations 16   16    
Other | Other          
Segment Reporting Information [Line Items]          
Operating Revenues 12 8 30 24  
Other | Other | Duke Energy Ohio          
Segment Reporting Information [Line Items]          
Operating Revenues 0 0 0 0  
Income From Continuing Operations (1) (2) (4) (4)  
Segment assets 13   13    
Corporate And Eliminations          
Segment Reporting Information [Line Items]          
Operating Revenues 42 33 120 98  
Income From Continuing Operations (222) (59) (625) (388)  
Segment assets 4,243   4,243    
Eliminations          
Segment Reporting Information [Line Items]          
Operating Revenues (72) (67) (213) (196)  
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 46   46    
Eliminations | Total Reportable Segments          
Segment Reporting Information [Line Items]          
Operating Revenues 42 42 123 122  
Eliminations | Electric Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 19 20 55 55  
Eliminations | Gas Utilities and Infrastructure          
Segment Reporting Information [Line Items]          
Operating Revenues 23 22 68 67  
Eliminations | Other          
Segment Reporting Information [Line Items]          
Operating Revenues $ 30 $ 25 $ 90 $ 74