Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT SECURITIES AND OTHER SECURITIES - Continuous Unrealized Loss Position (Details)

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INVESTMENT SECURITIES AND OTHER SECURITIES - Continuous Unrealized Loss Position (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Available-for-sale securities:    
Less than 12 months, fair value $ 1,729 $ 8,944
Less than 12 months, gross unrealized losses (66) (1,062)
12 months or longer, fair value 19,934 13,763
12 months or longer, gross unrealized losses (4,444) (2,756)
Total, fair value 21,663 22,707
Total, gross unrealized losses (4,510) (3,818)
Held-to-maturity securities:    
Less than 12 months, fair value 711 7,178
Less than 12 months, gross unrealized losses (23) (863)
12 months or longer, fair value 12,596 7,241
12 months or longer, gross unrealized losses (2,816) (1,439)
Total held-to-maturity securities 13,307 14,419
Total, gross unrealized losses (2,839) (2,302)
Residential CMO    
Available-for-sale securities:    
Less than 12 months, fair value 544 2,096
Less than 12 months, gross unrealized losses (16) (224)
12 months or longer, fair value 2,587 818
12 months or longer, gross unrealized losses (515) (198)
Total, fair value 3,131 2,914
Total, gross unrealized losses (531) (422)
Held-to-maturity securities:    
Less than 12 months, fair value 561 1,702
Less than 12 months, gross unrealized losses (16) (238)
12 months or longer, fair value 3,481 2,283
12 months or longer, gross unrealized losses (823) (476)
Total held-to-maturity securities 4,042 3,985
Total, gross unrealized losses (839) (714)
Residential MBS    
Available-for-sale securities:    
Less than 12 months, fair value 456 2,455
Less than 12 months, gross unrealized losses (21) (286)
12 months or longer, fair value 10,461 9,490
12 months or longer, gross unrealized losses (2,508) (1,804)
Total, fair value 10,917 11,945
Total, gross unrealized losses (2,529) (2,090)
Held-to-maturity securities:    
Less than 12 months, fair value 150 4,151
Less than 12 months, gross unrealized losses (7) (462)
12 months or longer, fair value 7,737 4,711
12 months or longer, gross unrealized losses (1,684) (913)
Total held-to-maturity securities 7,887 8,862
Total, gross unrealized losses (1,691) (1,375)
Commercial MBS    
Available-for-sale securities:    
Less than 12 months, fair value 0 1,090
Less than 12 months, gross unrealized losses 0 (249)
12 months or longer, fair value 1,729 863
12 months or longer, gross unrealized losses (815) (363)
Total, fair value 1,729 1,953
Total, gross unrealized losses (815) (612)
Held-to-maturity securities:    
Less than 12 months, fair value 0 1,201
Less than 12 months, gross unrealized losses 0 (154)
12 months or longer, fair value 1,280 247
12 months or longer, gross unrealized losses (300) (50)
Total held-to-maturity securities 1,280 1,448
Total, gross unrealized losses (300) (204)
Other agencies    
Available-for-sale securities:    
Less than 12 months, fair value 16 40
Less than 12 months, gross unrealized losses 0 (1)
12 months or longer, fair value 73 56
12 months or longer, gross unrealized losses (9) (8)
Total, fair value 89 96
Total, gross unrealized losses (9) (9)
Held-to-maturity securities:    
Less than 12 months, fair value 0 124
Less than 12 months, gross unrealized losses 0 (9)
12 months or longer, fair value 98 0
12 months or longer, gross unrealized losses (9) 0
Total held-to-maturity securities 98 124
Total, gross unrealized losses (9) (9)
Total U.S. Treasury, federal agency, and other agency securities    
Available-for-sale securities:    
Less than 12 months, fair value 1,016 5,681
Less than 12 months, gross unrealized losses (37) (760)
12 months or longer, fair value 14,850 11,227
12 months or longer, gross unrealized losses (3,847) (2,373)
Total, fair value 15,866 16,908
Total, gross unrealized losses (3,884) (3,133)
Held-to-maturity securities:    
Less than 12 months, fair value 711 7,178
Less than 12 months, gross unrealized losses (23) (863)
12 months or longer, fair value 12,596 7,241
12 months or longer, gross unrealized losses (2,816) (1,439)
Total held-to-maturity securities 13,307 14,419
Total, gross unrealized losses (2,839) (2,302)
Municipal securities    
Available-for-sale securities:    
Less than 12 months, fair value 713 2,298
Less than 12 months, gross unrealized losses (29) (174)
12 months or longer, fair value 2,665 807
12 months or longer, gross unrealized losses (197) (64)
Total, fair value 3,378 3,105
Total, gross unrealized losses (226) (238)
Private-label CMO    
Available-for-sale securities:    
Less than 12 months, fair value 0 64
Less than 12 months, gross unrealized losses 0 (13)
12 months or longer, fair value 95 43
12 months or longer, gross unrealized losses (15) (5)
Total, fair value 95 107
Total, gross unrealized losses (15) (18)
Asset-backed securities    
Available-for-sale securities:    
Less than 12 months, fair value 0 174
Less than 12 months, gross unrealized losses 0 (10)
12 months or longer, fair value 351 199
12 months or longer, gross unrealized losses (40) (34)
Total, fair value 351 373
Total, gross unrealized losses (40) (44)
Corporate debt    
Available-for-sale securities:    
Less than 12 months, fair value 0 727
Less than 12 months, gross unrealized losses 0 (105)
12 months or longer, fair value 1,973 1,487
12 months or longer, gross unrealized losses (345) (280)
Total, fair value 1,973 2,214
Total, gross unrealized losses $ (345) $ (385)