v3.25.2
OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period $ 6,418 $ 6,006 $ 6,302 $ 6,050
Other comprehensive income (loss) before reclassifications     65  
Amounts reclassified from AOCI     12  
Other Comprehensive Income (Loss) 29 7 77 (8)
Balance at end of period 6,524 6,090 6,524 6,090
Accumulated Other Comprehensive Income (Loss)        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period (121) (250) (169) (235)
Balance at end of period (92) $ (243) (92) $ (243)
Unrealized Net Gains (Losses) on Debt Securities Available for Sale        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period     (119)  
Other comprehensive income (loss) before reclassifications     52  
Amounts reclassified from AOCI     0  
Other Comprehensive Income (Loss)     52  
Balance at end of period (67)   (67)  
Unrealized Net Gains (Losses) on Derivative Instruments        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period     (15)  
Other comprehensive income (loss) before reclassifications     12  
Amounts reclassified from AOCI     12  
Other Comprehensive Income (Loss)     24  
Balance at end of period 9   9  
Unrecognized Pension and Postretirement Obligations        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period     (35)  
Other comprehensive income (loss) before reclassifications     1  
Amounts reclassified from AOCI     0  
Other Comprehensive Income (Loss)     1  
Balance at end of period $ (34)   $ (34)