XML 236 R162.htm IDEA: XBRL DOCUMENT v3.24.0.1
Accumulated Other Comprehensive Income - Changes in AOCI (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Other comprehensive income before reclassification, net of income taxes $ 320 $ (5,836)  
Amounts reclassified from accumulated other comprehensive income, net of income taxes 746 127  
Total other comprehensive income (loss), net of tax 1,066 (5,709) $ (1,324)
Unrealized gains (losses) on securities available for sale      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (4,895) (403)  
Other comprehensive income before reclassification, net of income taxes 702 (4,492)  
Amounts reclassified from accumulated other comprehensive income, net of income taxes 3 0  
Total other comprehensive income (loss), net of tax 705 (4,492)  
Ending balance (4,190) (4,895) (403)
Unrealized gains (losses) on derivative financial instruments      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (1,124) 88  
Other comprehensive income before reclassification, net of income taxes (364) (1,319)  
Amounts reclassified from accumulated other comprehensive income, net of income taxes 725 107  
Total other comprehensive income (loss), net of tax 361 (1,212)  
Ending balance (763) (1,124) 88
Net pension and postretirement benefit costs      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (276) (271)  
Other comprehensive income before reclassification, net of income taxes (18) (25)  
Amounts reclassified from accumulated other comprehensive income, net of income taxes 18 20  
Total other comprehensive income (loss), net of tax 0 (5)  
Ending balance (276) (276) (271)
Total      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (6,295) (586)  
Total other comprehensive income (loss), net of tax 1,066 (5,709) (1,324)
Ending balance $ (5,229) $ (6,295) $ (586)