v3.26.1
Related Party Transactions (Details)
$ in Millions
3 Months Ended 6 Months Ended
Feb. 27, 2026
USD ($)
Jun. 30, 2026
USD ($)
subsidiary
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
subsidiary
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Related Party Transaction            
Capital expenditures   $ 47 $ 51 $ 129 $ 89  
General and administrative   15 11 26 21  
Goat Mountain            
Related Party Transaction            
Remaining balance to distribute $ 106          
Capital expenditures 8          
Repayments of debt 70          
Remaining expected to be paid 36          
Development fee 18          
Payments for asset acquisition 200          
Goat Mountain | Location, Statement of Financial Position, Activity, Accrual [Axis]: us-gaap:OtherAssetsNoncurrent            
Related Party Transaction            
Remaining balance to distribute $ 98          
RENOM | Related Party            
Related Party Transaction            
Expenses from transactions with related party   25 20 46 41  
Due to related party   15   15   $ 8
Administrative Services Agreement | Affiliated Entity            
Related Party Transaction            
Expenses from transactions with related party   8 6 14 11  
Due to related party   $ 6   $ 6   $ 3
Number of wholly owned subsidiaries | subsidiary   2   2    
CEG | Related Party            
Related Party Transaction            
General and administrative   $ 6 $ 6 $ 13 $ 12