v3.25.3
Equity - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Beginning balance     $ 10,666  
Net deferred gain from cash flow hedges $ 0 $ 0 0 $ 4
Reclassification of deferred gain from cash flow hedges realized in net income 0 (1) (1) (1)
Other comprehensive income (loss) (2) 0 (2) 5
Ending balance 11,035 10,535 11,035 10,535
Accumulated Other Comprehensive Loss        
Beginning balance (17) (30) (17) (35)
Net deferred gain from cash flow hedges     0 4
Prior service cost     1 2
Actuarial losses (gain) (2) 1 (2) 2
Other comprehensive income (loss) (2) 0 (2) 5
Ending balance (19) (30) (19) (30)
CERC        
Beginning balance     6,268  
Reclassification of deferred gain from cash flow hedges realized in net income 0 0 0 0
Other comprehensive income (loss) (2) 0 (2) (1)
Ending balance 6,038 6,243 6,038 6,243
CERC | Accumulated Other Comprehensive Loss        
Beginning balance 17 15 17 16
Net deferred gain from cash flow hedges     0 0
Prior service cost     1 0
Actuarial losses (gain) (2) 0 (3) (1)
Other comprehensive income (loss) (2) 0 (2) (1)
Ending balance $ 15 $ 15 15 15
Other Pension, Postretirement and Supplemental Plans | Accumulated Other Comprehensive Loss        
Remeasurement of pension and other postretirement plans     0 (2)
Other Pension, Postretirement and Supplemental Plans | CERC | Accumulated Other Comprehensive Loss        
Remeasurement of pension and other postretirement plans     $ 0 $ 0