Trust Investments - Schedule of Proceeds from the Sales of and Net Realized Gains (Losses) on Securities (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Schedule of Trust Investments [Line Items]
Proceeds from Sales of Trust Investments				$ 731	$ 814
Net Gains (Losses) on Trust Investments		$ 95	$ 7	103	102
Nuclear Decommissioning Trust (NDT) Fund [Member]
Schedule of Trust Investments [Line Items]
Proceeds from Sales of Trust Investments		328	439	715	799
Gross Realized Gains		41	46	89	77
Gross Realized Losses		(26)	(17)	(55)	(31)
Net Realized Gains (Losses)	[1]	15	29	34	46
Unrealized Gain (Loss) on Equity Securities		79	(23)	69	55
Net Gains (Losses) on Trust Investments		94	6	103	101
Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Proceeds from Sales of Trust Investments		9	6	16	15
Gross Realized Gains		0	1	0	2
Gross Realized Losses		(1)	0	(1)	(1)
Net Realized Gains (Losses)	[2]	(1)	1	(1)	1
Unrealized Gain (Loss) on Equity Securities		2	(0)	1	(0)
Net Gains (Losses) on Trust Investments		$ 1	$ 1	$ 0	$ 1

[1] The cost of these securities was determined on the basis of specific identification.

[2] The cost of these securities was determined on the basis of specific identification.