v3.25.2
Nuclear Decommissioning - Narrative (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Asset Retirement Obligations [Line Items]    
Nuclear decommissioning trust funds $ 18,289 $ 17,305
Assets, Total    
Asset Retirement Obligations [Line Items]    
Nuclear decommissioning trust funds $ 18,329 $ 17,321