v3.25.2
Asset Retirement Obligations and Accrued Environmental Costs - Schedule of Disaggregation of Asset Retirement Obligations (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Asset Retirement Obligation [Line Items]    
Asset retirement obligations $ 511 $ 498
Nuclear    
Asset Retirement Obligation [Line Items]    
Asset retirement obligations 257 242
Non-nuclear    
Asset Retirement Obligation [Line Items]    
Asset retirement obligations $ 254 $ 256