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, 2025		Dec. 31, 2024
Nuclear Decommissioning Trust (NDT) Fund [Member]
Schedule of Trust Investments [Line Items]
Trust Investments, Cost	$ 2,426	[1]	$ 2,311	[2]
Gross Unrealized Gains	590	[1]	495	[2]
Gross Unrealized Losses	(102)	[1]	(160)	[2]
Trust Investments, Fair Value	2,914	[1]	2,646	[2]
Nuclear Decommissioning Trust (NDT) Fund [Member] | Total Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	1,430		1,384
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	13		4
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(84)		(122)
Debt Securities, Available-for-Sale, Fair Value	1,359		1,266
Nuclear Decommissioning Trust (NDT) Fund [Member] | Domestic Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	544		508
Equity Securities, Accumulated Gross Unrealized Gain	397		393
Equity Securities, FV-NI, Unrealized Loss	(9)		(9)
Equity Securities, Fair Value	932		892
Nuclear Decommissioning Trust (NDT) Fund [Member] | International Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	452		419
Equity Securities, Accumulated Gross Unrealized Gain	180		98
Equity Securities, FV-NI, Unrealized Loss	(9)		(29)
Equity Securities, Fair Value	623		488
Nuclear Decommissioning Trust (NDT) Fund [Member] | Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	996		927
Equity Securities, Accumulated Gross Unrealized Gain	577		491
Equity Securities, FV-NI, Unrealized Loss	(18)		(38)
Equity Securities, Fair Value	1,555		1,380
Nuclear Decommissioning Trust (NDT) Fund [Member] | Government Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	849		853
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	6		1
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(65)		(91)
Debt Securities, Available-for-Sale, Fair Value	790		763
Nuclear Decommissioning Trust (NDT) Fund [Member] | Corporate Debt Obligations [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	581		531
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	7		3
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(19)		(31)
Debt Securities, Available-for-Sale, Fair Value	569		503
Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Trust Investments, Cost	179		189
Gross Unrealized Gains	9		9
Gross Unrealized Losses	(26)		(33)
Trust Investments, Fair Value	162		165
Rabbi Trust [Member] | Total Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	171		181
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(26)		(33)
Debt Securities, Available-for-Sale, Fair Value	145		148
Rabbi Trust [Member] | Domestic Equity Securities [Member]
Schedule of Trust Investments [Line Items]
Equity Securities, Cost	8		8
Equity Securities, Accumulated Gross Unrealized Gain	9		9
Equity Securities, FV-NI, Unrealized Loss	0		0
Equity Securities, Fair Value	17		17
Rabbi Trust [Member] | Government Debt Securities [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	102		105
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(18)		(22)
Debt Securities, Available-for-Sale, Fair Value	84		83
Rabbi Trust [Member] | Corporate Debt Obligations [Member]
Schedule of Trust Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	69		76
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0		0
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(8)		(11)
Debt Securities, Available-for-Sale, Fair Value	$ 61		$ 65

[1] The NDT Fund Investments table excludes cash and foreign currency of $1 million as of December 31, 2025, which is part of the NDT Fund.

[2] 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.