Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Subtotal	$ 722	$ 610	$ 2,111	$ 1,826
Alternative revenue programs, net of amortization	(13)	1	(27)	6
Other Cost of Operating Revenue	5
Other accrued (deferred) revenues, net		1	10	2
Total retail revenues	714	612	2,094	1,830
Wholesale revenues	192	173	467	323
Other operating revenue	23	17	55	45
Total revenues	929	802	2,616	2,198
Gain on Derivative Instruments, Pretax	108	96	228	152
Residential [Member]
Disaggregation of Revenue [Line Items]
Subtotal	356	301	1,078	942
Commercial [Member]
Disaggregation of Revenue [Line Items]
Subtotal	244	213	690	606
Industrial [Member]
Disaggregation of Revenue [Line Items]
Subtotal	115	89	321	258
Direct Access customers [Member]
Disaggregation of Revenue [Line Items]
Subtotal	$ 7	$ 7	$ 22	$ 20