v3.26.1
Commitments and Contingencies (Narrative) (Details)
$ in Millions
Dec. 20, 2024
plaintiff
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Mooresville Coal Ash Class Action Litigation      
Loss Contingencies [Line Items]      
Number of plaintiffs | plaintiff 15    
Duke Energy Carolinas | Asbestos-related Injuries and Damages Claims      
Loss Contingencies [Line Items]      
Asbestos-related injuries and damages reserves   $ 386 $ 395
Probable insurance recoveries   556 555
Duke Energy and Duke Energy Carolinas      
Loss Contingencies [Line Items]      
Reserve for credit losses for insurance receivables   $ 9 $ 9