v3.25.2
Acquisitions and Divestitures - 2025 Pending Acquisitions (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 17, 2025
USD ($)
agreement
Dec. 31, 2025
USD ($)
MW
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Asset Acquisition [Line Items]        
Cash paid     $ 51 $ 45
Freedom And Guernsey | Subsequent Event        
Asset Acquisition [Line Items]        
Number of purchase and sale agreements | agreement 2      
Freedom And Guernsey | Subsequent Event | Forecast        
Asset Acquisition [Line Items]        
Percentage of escrow deposit   1.00%    
Freedom And Guernsey | Subsequent Event | Senior Secured Bridge Facility | Line of Credit        
Asset Acquisition [Line Items]        
Aggregate principal amount $ 1,200      
Freedom And Guernsey | Subsequent Event | Senior Unsecured Bridge Facility | Line of Credit        
Asset Acquisition [Line Items]        
Aggregate principal amount $ 2,600      
Freedom Energy Center | Subsequent Event | Forecast        
Asset Acquisition [Line Items]        
Power generating capacity | MW   1,045    
Cash paid   $ 1,500    
Termination fee   $ 63    
Guernsey Power Station | Subsequent Event | Forecast        
Asset Acquisition [Line Items]        
Power generating capacity | MW   1,836    
Cash paid   $ 2,300    
Termination fee   $ 100