Trust Investments - Schedule of Fair Values and Gross Unrealized Gains and Losses for the Securities Held (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024		Dec. 31, 2023
Nuclear Decommissioning Trust (NDT) Fund [Member]
Schedule of Trust Investments [Line Items]
Trust Investments, Cost	$ 2,311	[1]	$ 2,219	[2]
Gross Unrealized Gains	495	[1]	428	[2]
Gross Unrealized Losses	(160)	[1]	(124)	[2]
Trust Investments, Fair Value	2,646	[1]	2,523	[2]
Nuclear Decommissioning Trust (NDT) Fund [Member] | Total Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,384		1,314
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	4		10
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(122)		(111)
Debt Securities, Available-for-Sale, Fair Value	1,266		1,213
Nuclear Decommissioning Trust (NDT) Fund [Member] | Domestic Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	508		482
Equity Securities, Accumulated Gross Unrealized Gain	393		300
Equity Securities, FV-NI, Unrealized Loss	(9)		(2)
Equity Securities, Fair Value	892		780
Nuclear Decommissioning Trust (NDT) Fund [Member] | International Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	419		423
Equity Securities, Accumulated Gross Unrealized Gain	98		118
Equity Securities, FV-NI, Unrealized Loss	(29)		(11)
Equity Securities, Fair Value	488		530
Nuclear Decommissioning Trust (NDT) Fund [Member] | Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	927		905
Equity Securities, Accumulated Gross Unrealized Gain	491		418
Equity Securities, FV-NI, Unrealized Loss	(38)		(13)
Equity Securities, Fair Value	1,380		1,310
Nuclear Decommissioning Trust (NDT) Fund [Member] | Government Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	853		759
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	1		4
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(91)		(72)
Debt Securities, Available-for-Sale, Fair Value	763		691
Nuclear Decommissioning Trust (NDT) Fund [Member] | Corporate Debt Obligations [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	531		555
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	3		6
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(31)		(39)
Debt Securities, Available-for-Sale, Fair Value	503		522
Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Trust Investments, Cost	189		200
Gross Unrealized Gains	9		8
Gross Unrealized Losses	(33)		(29)
Trust Investments, Fair Value	165		179
Rabbi Trust [Member] | Total Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	181		190
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(33)		(29)
Debt Securities, Available-for-Sale, Fair Value	148		161
Rabbi Trust [Member] | Domestic Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	8		10
Equity Securities, Accumulated Gross Unrealized Gain	9		8
Equity Securities, FV-NI, Unrealized Loss	0		0
Equity Securities, Fair Value	17		18
Rabbi Trust [Member] | Government Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	105		110
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(22)		(19)
Debt Securities, Available-for-Sale, Fair Value	83		91
Rabbi Trust [Member] | Corporate Debt Obligations [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	76		80
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(11)		(10)
Debt Securities, Available-for-Sale, Fair Value	$ 65		$ 70

[1] The NDT Fund Investments table excludes cash and foreign currency of $24 million as of December 31, 2024, which is part of the NDT Fund.

[2] The NDT Fund Investments table excludes cash and foreign currency of $1 million as of December 31, 2023, which is part of the NDT Fund.