v3.26.1
Revenue Recognition - Disaggregation of Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Subtotal $ 750 $ 683 $ 1,527 $ 1,490
Alternative revenue programs, net of amortization 3 9 19 5
Other accrued revenues, net (2) 6 (5) 10
Total retail revenues 751 698 1,541 1,505
Wholesale revenues 39 88 102 188
Other operating revenue 24 21 50 42
Total revenues 814 807 1,693 1,735
Gain on Derivative Instruments, Pretax 27 30 60 80
Residential [Member]        
Disaggregation of Revenue [Line Items]        
Subtotal 334 311 728 740
Commercial [Member]        
Disaggregation of Revenue [Line Items]        
Subtotal 248 234 483 476
Industrial [Member]        
Disaggregation of Revenue [Line Items]        
Subtotal 156 128 295 255
Direct Access customers [Member]        
Disaggregation of Revenue [Line Items]        
Subtotal $ 12 $ 10 $ 21 $ 19