v3.25.2
Accumulated Other Comprehensive Income (Changes In The Components Of AOCI) (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Equity, Attributable to Parent, Beginning Balance     $ (2,089)  
Other comprehensive income (loss) before reclassifications     20  
Amounts reclassified from AOCI     12  
Total other comprehensive income (loss) $ 3 $ (6) 32 $ 2
Equity, Attributable to Parent, Ending Balance (2,178)   (2,178)  
Accumulated Other Comprehensive Income [Member]        
Equity, Attributable to Parent, Beginning Balance     (128)  
Equity, Attributable to Parent, Ending Balance (96)   (96)  
Unrealized gains (losses) on AFS, net [Member]        
Other comprehensive income (loss) before reclassifications     18  
Amounts reclassified from AOCI     7  
Total other comprehensive income (loss)     25  
Unrealized gains (losses) on AFS, net [Member] | Accumulated Other Comprehensive Income [Member]        
Equity, Attributable to Parent, Beginning Balance     (150)  
Equity, Attributable to Parent, Ending Balance (125)   (125)  
Foreign Currency translation, net [Member]        
Other comprehensive income (loss) before reclassifications     0  
Amounts reclassified from AOCI     5  
Total other comprehensive income (loss)     5  
Foreign Currency translation, net [Member] | Accumulated Other Comprehensive Income [Member]        
Equity, Attributable to Parent, Beginning Balance     (5)  
Equity, Attributable to Parent, Ending Balance 0   0  
Instrument-specific credit risk of liabilities measured at fair value, net [Member]        
Other comprehensive income (loss) before reclassifications     2  
Total other comprehensive income (loss)     2  
Instrument-specific credit risk of liabilities measured at fair value, net [Member] | Accumulated Other Comprehensive Income [Member]        
Equity, Attributable to Parent, Beginning Balance     27  
Equity, Attributable to Parent, Ending Balance $ 29   $ 29