v3.26.3
DERIVATIVES - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Derivative [Line Items]          
Fair value of derivatives with credit risk contingent feature associated with credit ratings $ 0   $ 0    
Additional collateral required 0   0    
Fair value of derivatives with credit risk contingent features 6,000,000   6,000,000   $ 7,000,000
Collateral posted 6,000,000   6,000,000   7,000,000
Fair Value 9,663,000,000   9,663,000,000   $ 7,328,000,000
Cash flow hedge gains to be reclassified within 12 months     16,000,000    
Net unrealized (losses)/gains on cash flow hedge derivative financial instruments          
Derivative [Line Items]          
Net amount of change recognized in OCI for cash flow hedge derivatives, gains (losses) (155,000,000) $ 23,000,000 (229,000,000) $ 97,000,000  
Reclassification of gains from AOCI 2,000,000 $ 3,000,000 6,000,000 $ 8,000,000  
Portion of Closed Portfolio          
Derivative [Line Items]          
Fair Value $ 2,300,000,000   $ 2,300,000,000