v3.26.1
FAIR VALUE MEASUREMENTS (Schedule of Unrealized Gains Losses Related to Available-for-sale Investments) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Debt Securities, Available-for-sale [Line Items]    
Amount primarily related to deferred taxes on appreciation of investment value $ 904 $ 881
Nuclear decommissioning trusts    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 3,033 2,975
Total Unrealized Gains 2,362 2,188
Total Unrealized Losses (60) (52)
Total Fair Value 5,335 5,111
Nuclear decommissioning trusts | Short-term investments    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 6 94
Total Unrealized Gains 31 0
Total Unrealized Losses 0 0
Total Fair Value 37 94
Nuclear decommissioning trusts | Global equity securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 281 324
Total Unrealized Gains 2,308 2,140
Total Unrealized Losses (7) (5)
Total Fair Value 2,582 2,459
Nuclear decommissioning trusts | Fixed-income securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 2,746 2,557
Total Unrealized Gains 23 48
Total Unrealized Losses (53) (47)
Total Fair Value 2,716 2,558
Customer credit trust    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 555 800
Total Unrealized Gains 1 5
Total Unrealized Losses (3) (1)
Total Fair Value 553 804
Customer credit trust | Short-term investments    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 24 111
Total Unrealized Gains 0 0
Total Unrealized Losses 0 0
Total Fair Value 24 111
Customer credit trust | Global equity securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 0 0
Total Unrealized Gains 0 0
Total Unrealized Losses 0 0
Total Fair Value 0 0
Customer credit trust | Fixed-income securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 531 689
Total Unrealized Gains 1 5
Total Unrealized Losses (3) (1)
Total Fair Value $ 529 $ 693