v3.25.2
Dispositions (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 35 Months Ended
Aug. 04, 2025
Jul. 27, 2025
Jun. 30, 2024
Jun. 30, 2028
Dec. 31, 2027
Jun. 30, 2027
Dec. 31, 2026
Jun. 30, 2026
Jun. 30, 2024
Jun. 30, 2028
Dec. 31, 2024
Oct. 25, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Aggregate investment from noncontrolling owner     $ 47           $ 47      
Subsequent event | Florida Progress LLC | Forecast                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Noncontrolling ownership percentage       19.70%       9.20%   19.70%    
Aggregate investment from noncontrolling owner       $ 1,000 $ 1,500 $ 500 $ 200 $ 2,800   $ 6,000    
Investment Agreement, termination fee $ 240                      
Discontinued Operations, Disposed of by Sale | Piedmont's Tennessee Business | Subsequent event                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received   $ 2,480                    
Purchase Agreement termination fee, percentage   6.50%                    
Discontinued Operations, Disposed of by Sale | Commercial Renewables                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received                       $ 1,100
Consideration period                       18 months
Discontinued Operations, Disposed of by Sale | Commercial Renewables | Noncurrent assets                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Consideration to be received                     $ 551  
Discontinued Operations, Held-for-sale | Commercial Renewables                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Noncontrolling interest balance                     $ 18