v3.25.1
FAIR VALUE MEASUREMENTS - Schedule of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Millions
Mar. 31, 2025
Dec. 31, 2024
Liabilities    
Restricted cash $ 31 $ 43
Short-term cash investments 11 6
Recurring    
Assets    
Derivative assets FTRs 1 7
Equity securities 2 2
Debt securities 272 276
Cash, cash equivalents and restricted cash 163 154
Other 52 45
Total assets 490 484
Liabilities    
Derivative liabilities FTRs 1 0
Total liabilities (1) 0
Net assets 489 484
Level 1 | Recurring    
Assets    
Derivative assets FTRs 0 0
Equity securities 2 2
Debt securities 0 0
Cash, cash equivalents and restricted cash 163 154
Other 0 0
Total assets 165 156
Liabilities    
Derivative liabilities FTRs 0 0
Total liabilities 0 0
Net assets 165 156
Level 2 | Recurring    
Assets    
Derivative assets FTRs 0 0
Equity securities 0 0
Debt securities 272 276
Cash, cash equivalents and restricted cash 0 0
Other 52 45
Total assets 324 321
Liabilities    
Derivative liabilities FTRs 0 0
Total liabilities 0 0
Net assets 324 321
Level 3 | Recurring    
Assets    
Derivative assets FTRs 1 7
Equity securities 0 0
Debt securities 0 0
Cash, cash equivalents and restricted cash 0 0
Other 0 0
Total assets 1 7
Liabilities    
Derivative liabilities FTRs 1 0
Total liabilities (1) 0
Net assets $ 0 $ 7