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Regulatory Matters (Schedule of Net Carrying Value Of Facilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Public Utilities, General Disclosures [Line Items]    
Remaining net book value $ 129,959 $ 121,626
Duke Energy Carolinas    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value 41,855 39,292
Duke Energy Progress    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value 28,195 26,130
Duke Energy Florida    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value 24,723 22,840
Duke Energy Indiana    
Public Utilities, General Disclosures [Line Items]    
Remaining net book value $ 13,749 $ 13,122