XML 144 R102.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Debt and Credit Facilities (Schedule of Line of Credit Facilities) (Details) - Master Credit Facility - USD ($)
Jun. 30, 2024
Mar. 31, 2024
Line of Credit Facility [Line Items]    
Facility size $ 9,000,000,000 $ 9,000,000,000
Commercial paper (3,271,000,000)  
Outstanding letters of credit (38,000,000)  
Tax-exempt bonds (81,000,000)  
Available capacity under the Master Credit Facility 5,610,000,000  
Duke Energy Carolinas    
Line of Credit Facility [Line Items]    
Facility size 1,400,000,000  
Commercial paper (307,000,000)  
Outstanding letters of credit (4,000,000)  
Tax-exempt bonds 0  
Available capacity under the Master Credit Facility 1,089,000,000  
Duke Energy Progress    
Line of Credit Facility [Line Items]    
Facility size 1,500,000,000  
Commercial paper (813,000,000)  
Outstanding letters of credit (1,000,000)  
Tax-exempt bonds 0  
Available capacity under the Master Credit Facility 686,000,000  
Duke Energy Florida    
Line of Credit Facility [Line Items]    
Facility size 875,000,000  
Commercial paper (227,000,000)  
Outstanding letters of credit (7,000,000)  
Tax-exempt bonds 0  
Available capacity under the Master Credit Facility 641,000,000  
Duke Energy Ohio    
Line of Credit Facility [Line Items]    
Facility size 1,050,000,000  
Commercial paper (348,000,000)  
Outstanding letters of credit 0  
Tax-exempt bonds 0  
Available capacity under the Master Credit Facility 702,000,000  
Duke Energy Indiana    
Line of Credit Facility [Line Items]    
Facility size 950,000,000  
Commercial paper (150,000,000)  
Outstanding letters of credit 0  
Tax-exempt bonds (81,000,000)  
Available capacity under the Master Credit Facility 719,000,000  
Piedmont    
Line of Credit Facility [Line Items]    
Facility size 950,000,000  
Commercial paper (623,000,000)  
Outstanding letters of credit 0  
Tax-exempt bonds 0  
Available capacity under the Master Credit Facility 327,000,000  
Duke Energy (Parent) | Proceeds loaned to subsidiary registrants    
Line of Credit Facility [Line Items]    
Commercial paper (625,000,000)  
Duke Energy (Parent) | Duke Energy (Parent)    
Line of Credit Facility [Line Items]    
Facility size 2,275,000,000  
Commercial paper (803,000,000)  
Outstanding letters of credit (26,000,000)  
Tax-exempt bonds 0  
Available capacity under the Master Credit Facility $ 1,446,000,000