v3.25.1
Trust Investments - Schedule of Proceeds from the Sales of and Net Realized Gains (Losses) on Securities (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Schedule of Trust Investments [Line Items]    
Proceeds from Sales of Trust Investments $ 394 $ 369
Net Gains (Losses) on Trust Investments 8 95
Nuclear Decommissioning Trust (NDT) Fund [Member]    
Schedule of Trust Investments [Line Items]    
Proceeds from Sales of Trust Investments [1] 387 360
Gross Realized Gains 48 31
Gross Realized Losses (29) (14)
Net Realized Gains (Losses) [2] 19 17
Unrealized Gain (Loss) on Equity Securities (10) 78
Net Gains (Losses) on Trust Investments 9 95
Rabbi Trust [Member]    
Schedule of Trust Investments [Line Items]    
Proceeds from Sales of Trust Investments 7 9
Gross Realized Gains 0 1
Gross Realized Losses 0 (1)
Net Realized Gains (Losses) [3] 0 0
Unrealized Gain (Loss) on Equity Securities (1) 0
Net Gains (Losses) on Trust Investments $ (1) $ 0
[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.