Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Subtotal	$ 807	$ 750
Alternative revenue programs, net of amortization	(4)	(11)
Other accrued (deferred) revenues, net	4	1
Total retail revenues	807	740
Wholesale revenues	100	176
Other operating revenue	21	13
Total revenues	928	929
Gain on Derivative Instruments, Pretax	50	88
Residential [Member]
Disaggregation of Revenue [Line Items]
Subtotal	429	415
Commercial [Member]
Disaggregation of Revenue [Line Items]
Subtotal	242	227
Industrial [Member]
Disaggregation of Revenue [Line Items]
Subtotal	127	102
Direct Access customers [Member]
Disaggregation of Revenue [Line Items]
Subtotal	$ 9	$ 6