Trust Investments - Schedule of Amount Available-For-Sale Debt Securities By Maturity Periods (Details) $ in Millions	Dec. 31, 2025 USD ($)
Nuclear Decommissioning Trust (NDT) Fund [Member]
Schedule of Trust Investments [Line Items]
Total Available-for-Sale Debt Securities	$ 1,359
Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Total Available-for-Sale Debt Securities	145
Debt Securities [Member] | Nuclear Decommissioning Trust (NDT) Fund [Member]
Schedule of Trust Investments [Line Items]
Less than one year	16
1 - 5 years	371
6 - 10 years	257
11 - 15 years	72
16 - 20 years	110
Over 20 years	533
Debt Securities [Member] | Rabbi Trust [Member]
Schedule of Trust Investments [Line Items]
Less than one year	5
1 - 5 years	30
6 - 10 years	19
11 - 15 years	11
16 - 20 years	16
Over 20 years	$ 64