v3.25.2
Acquisitions, Development and Divestitures - Development (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Business Combination [Line Items]          
Transition Service Agreement Cost $ 49   $ 97    
Goodwill 2,247   2,247   $ 2,247
Revenues 2,025 $ 1,881 4,529 $ 4,185  
Net income (loss) 183 190 597 497  
Indemnification for Safari sale/leaseback     25    
Louisville Gas And Electric Co [Member]          
Business Combination [Line Items]          
Goodwill 389   389   389
Revenues 378 366 883 842  
Net income (loss) 56 [1] 62 161 [1] 155  
Kentucky Utilities Co [Member]          
Business Combination [Line Items]          
Goodwill 607   607   $ 607
Revenues 472 464 1,036 989  
Net income (loss) [2] 78 77 203 185  
Rhode Island Regulated          
Business Combination [Line Items]          
Revenues 494 389 1,120 938  
Net income (loss) (17) 12 53 76  
Corporate and Other [Member]          
Business Combination [Line Items]          
Revenues 1 0 1 1  
Net income (loss) (65) (106) (128) (202)  
Rhode Island Energy | Rhode Island Energy TSA          
Business Combination [Line Items]          
Other Nonrecurring (Income) Expense $ 17 $ 83 $ 34 $ 165  
[1] Net income equals comprehensive income.
[2] Net income equals comprehensive income.