v3.26.1
Debt and Credit Facilities (Summary of Current Maturities of Long-term Debt) (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 7,395 $ 7,104
Other debt securities    
Debt Instrument [Line Items]    
Current maturities of long-term debt 247  
Duke Energy Florida    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 1,087 437
Duke Energy Florida | Debt Maturing October 2073 and April 2074 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Facility term 12 months  
Duke Energy Florida | First Mortgage Bonds Due January 2027 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 3.20%  
Current maturities of long-term debt $ 650  
Duke Energy Florida | Debt Maturing October 2073 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 3.608%  
Current maturities of long-term debt $ 200  
Duke Energy Florida | Debt Maturing April 2074 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 3.608%  
Current maturities of long-term debt $ 173  
Duke Energy Ohio    
Debt Instrument [Line Items]    
Current maturities of long-term debt   45
Duke Energy (Parent) | Debt Maturing April 2026 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 4.125%  
Current maturities of long-term debt $ 1,725  
Duke Energy (Parent) | Debt Maturing September 2026 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 2.65%  
Current maturities of long-term debt $ 1,500  
Duke Energy (Parent) | Unsecured Debt Maturing January 2027 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 4.85%  
Current maturities of long-term debt $ 600  
Piedmont    
Debt Instrument [Line Items]    
Current maturities of long-term debt 40 490
Duke Energy Progress    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 793 285
Duke Energy Progress | First Mortgage Bonds Due March 2027 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 4.35%  
Current maturities of long-term debt $ 500  
Duke Energy Progress | First Mortgage Bonds Due October 2046 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 3.30%  
Current maturities of long-term debt $ 200  
Duke Energy Carolinas    
Debt Instrument [Line Items]    
Current maturities of long-term debt $ 1,649 $ 629
Duke Energy Carolinas | Unsecured Debt Maturing March 2027 | Unsecured Debt    
Debt Instrument [Line Items]    
Interest rate 4.522%  
Current maturities of long-term debt $ 1,000  
Duke Energy Carolinas | First Mortgage Bonds Due December 2026 | First Mortgage Bonds    
Debt Instrument [Line Items]    
Interest rate 2.95%  
Current maturities of long-term debt $ 600