v3.25.2
Regulatory Matters (Regulatory Matters Narrative - Duke Energy Carolinas and Duke Energy Progress) (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 25, 2025
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2026
Apr. 16, 2025
Mar. 21, 2025
Dec. 31, 2024
Public Utilities, General Disclosures [Line Items]              
Capital expenditures   $ 6,428 $ 6,204        
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Debby and Helene              
Public Utilities, General Disclosures [Line Items]              
Storm restoration costs incurred   812          
Capital expenditures, cumulative   468          
Duke Energy Carolinas and Duke Energy Progress | Hurricanes Debby and Helene | Forecast              
Public Utilities, General Disclosures [Line Items]              
Capital expenditures       $ 70      
Duke Energy Carolinas              
Public Utilities, General Disclosures [Line Items]              
Capital expenditures   2,145 1,949        
Duke Energy Carolinas | Hurricanes Debby and Helene              
Public Utilities, General Disclosures [Line Items]              
Storm restoration costs incurred   530          
Increase (reduction) in regulatory liabilities   (82)          
Capital expenditures, cumulative   378          
Duke Energy Progress              
Public Utilities, General Disclosures [Line Items]              
Capital expenditures   1,524 $ 1,373        
Duke Energy Progress | Hurricanes Debby and Helene              
Public Utilities, General Disclosures [Line Items]              
Storm restoration costs incurred   282          
Increase (reduction) in regulatory liabilities   34          
Capital expenditures, cumulative   $ 90          
PSCSC | Duke Energy Carolinas | Hurricane Helene              
Public Utilities, General Disclosures [Line Items]              
Storm reserves           $ 25  
Total storm restoration costs $ 556            
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Carolinas | North Carolina Storms              
Public Utilities, General Disclosures [Line Items]              
Storm reserves         $ 584   $ 200
Hurricanes Helene, Debby and Milton | NCUC | Duke Energy Progress | North Carolina Storms              
Public Utilities, General Disclosures [Line Items]              
Storm reserves         $ 461   $ 100