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Variable Interest Entities (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Jan. 31, 2025
Apr. 30, 2024
Mar. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Apr. 01, 2024
Feb. 29, 2024
Variable Interest Entity [Line Items]                
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       $ 4,509,000,000 $ 4,292,000,000      
Accounts payable       5,479,000,000 4,228,000,000      
Duke Energy Carolinas                
Variable Interest Entity [Line Items]                
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       1,536,000,000 1,484,000,000      
Accounts payable       1,809,000,000 1,183,000,000      
Duke Energy Progress                
Variable Interest Entity [Line Items]                
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       1,341,000,000 1,227,000,000      
Accounts payable       749,000,000 634,000,000      
Duke Energy Ohio                
Variable Interest Entity [Line Items]                
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       183,000,000 179,000,000      
Accounts payable       313,000,000 338,000,000      
Duke Energy Florida                
Variable Interest Entity [Line Items]                
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       745,000,000 674,000,000      
Accounts payable       1,418,000,000 738,000,000      
Duke Energy Indiana                
Variable Interest Entity [Line Items]                
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       586,000,000 582,000,000      
Accounts payable       $ 257,000,000 300,000,000      
CRC                
Variable Interest Entity [Line Items]                
Variation in credit losses (as a percent)       10.00%        
Variation in discount rates (as a percent)       20.00%        
Consolidated VIEs                
Variable Interest Entity [Line Items]                
Financial support       $ 0 0 $ 0    
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       494,000,000 462,000,000      
Accounts payable       214,000,000 188,000,000      
Consolidated VIEs | Duke Energy Carolinas | Secured Debt | Subsequent Event                
Variable Interest Entity [Line Items]                
Repayments of debt $ 500,000,000              
Consolidated VIEs | Duke Energy Florida                
Variable Interest Entity [Line Items]                
Inventory (includes $494 at 2024 and $462 at 2023 related to VIEs)       494,000,000 462,000,000      
Accounts payable       $ 208,000,000 188,000,000      
Consolidated VIEs | Duke Energy Florida | DEFR Accounts Receivable Securitization Facility Maturing April 2024 | Secured Debt                
Variable Interest Entity [Line Items]                
Repayments of debt   $ 325,000,000            
Consolidated VIEs | Duke Energy Florida | DERF Accounts Receivable Securitization financing | Secured Debt | Subsequent Event                
Variable Interest Entity [Line Items]                
Repayments of debt 500,000,000              
Consolidated VIEs | CRC                
Variable Interest Entity [Line Items]                
Repayments of debt     $ 350,000,000          
Restricted receivables         663,000,000     $ 682,000,000
Proceeds received as cash (as a percent)       75.00%        
Proceeds received as subordinated note (as a percent)       25.00%        
Consolidated VIEs | CRC | Duke Energy Ohio                
Variable Interest Entity [Line Items]                
Restricted receivables               366,000,000
Consolidated VIEs | CRC | Duke Energy Indiana                
Variable Interest Entity [Line Items]                
Restricted receivables               $ 316,000,000
Consolidated VIEs | DEFR | Duke Energy Florida                
Variable Interest Entity [Line Items]                
Restricted receivables         532,000,000   $ 459,000,000  
Consolidated VIEs | DERF | Duke Energy Carolinas                
Variable Interest Entity [Line Items]                
Restricted receivables       $ 1,054,000,000 $ 991,000,000      
Consolidated VIEs | DERF | Duke Energy Carolinas | Subsequent Event                
Variable Interest Entity [Line Items]                
Restricted receivables $ 1,081,000,000              
Consolidated VIEs | DEPSCSF | Duke Energy Progress                
Variable Interest Entity [Line Items]                
Proceeds from issuance of senior secured bonds   $ 177,000,000            
Non-consolidated VIEs | CRC | Duke Energy Ohio                
Variable Interest Entity [Line Items]                
Discount rate (as a percent)       1.00%