v3.26.1
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, 2026
Mar. 31, 2025
Schedule of Trust Investments [Line Items]    
Proceeds from Sales of Trust Investments $ 541 $ 394
Net Gains (Losses) on Trust Investments (17) 8
Nuclear Decommissioning Trust (NDT) Fund [Member]    
Schedule of Trust Investments [Line Items]    
Proceeds from Sales of Trust Investments 531 387
Gross Realized Gains 68 48
Gross Realized Losses (36) (29)
Net Realized Gains (Losses) [1] 32 19
Unrealized Gain (Loss) on Equity Securities (48) (10)
Net Gains (Losses) on Trust Investments (16) 9
Rabbi Trust [Member]    
Schedule of Trust Investments [Line Items]    
Proceeds from Sales of Trust Investments 10 7
Gross Realized Gains 0 0
Gross Realized Losses 0 0
Net Realized Gains (Losses) [2] 0 0
Unrealized Gain (Loss) on Equity Securities (1) (1)
Net Gains (Losses) on Trust Investments $ (1) $ (1)
[1] The cost of these securities was determined on the basis of specific identification.
[2] The cost of these securities was determined on the basis of specific identification.