Trust Investments - Schedule of Proceeds from the Sales of and Net Realized Gains (Losses) on Securities (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Trust Investments [Line Items]
Proceeds from Sales of Trust Investments		$ 1,537	$ 1,714	$ 1,586
Net Gains (Losses) on Trust Investments		127	189	(265)
Nuclear Decommissioning Trust (NDT) Fund [Member]
Schedule of Trust Investments [Line Items]
Proceeds from Sales of Trust Investments	[1]	1,504	1,685	1,521
Gross Realized Gains		132	142	86
Gross Realized Losses		(54)	(100)	(136)
Net Realized Gains (Losses)	[2]	78	42	(50)
Unrealized Gain (Loss) on Equity Securities		47	146	(205)
Net Gains (Losses) on Trust Investments		125	188	(255)
Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Proceeds from Sales of Trust Investments		33	29	65
Gross Realized Gains		3	5	5
Gross Realized Losses		(2)	(6)	(9)
Net Realized Gains (Losses)	[3]	1	(1)	(4)
Unrealized Gain (Loss) on Equity Securities		1	2	(6)
Net Gains (Losses) on Trust Investments		$ 2	$ 1	$ (10)

[1] Includes activity in accounts related to the liquidation of funds being transitioned within the trust.

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

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