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
Mar. 31, 2024
Dec. 31, 2023
Available-for-sale securities:    
Less than 12 months, fair value $ 1,215 $ 1,375
Less than 12 months, gross unrealized losses (20) (28)
12 months or longer, fair value 20,053 20,381
12 months or longer, gross unrealized losses (3,577) (3,317)
Total, fair value 21,268 21,756
Total, gross unrealized losses (3,597) (3,345)
Held-to-maturity securities:    
Less than 12 months, fair value 159 156
Less than 12 months, gross unrealized losses (2) (1)
12 months or longer, fair value 12,646 13,030
12 months or longer, gross unrealized losses (2,244) (2,038)
Total held-to-maturity securities 12,805 13,186
Total, gross unrealized losses (2,246) (2,039)
Residential CMO    
Available-for-sale securities:    
Less than 12 months, fair value 364 543
Less than 12 months, gross unrealized losses (4) (7)
12 months or longer, fair value 2,711 2,641
12 months or longer, gross unrealized losses (440) (401)
Total, fair value 3,075 3,184
Total, gross unrealized losses (444) (408)
Held-to-maturity securities:    
Less than 12 months, fair value 159 156
Less than 12 months, gross unrealized losses (2) (1)
12 months or longer, fair value 3,532 3,542
12 months or longer, gross unrealized losses (704) (663)
Total held-to-maturity securities 3,691 3,698
Total, gross unrealized losses (706) (664)
Residential MBS    
Available-for-sale securities:    
Less than 12 months, fair value 238 207
Less than 12 months, gross unrealized losses (2) (2)
12 months or longer, fair value 10,554 10,913
12 months or longer, gross unrealized losses (1,962) (1,774)
Total, fair value 10,792 11,120
Total, gross unrealized losses (1,964) (1,776)
Held-to-maturity securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 7,778 8,108
12 months or longer, gross unrealized losses (1,301) (1,145)
Total held-to-maturity securities 7,778 8,108
Total, gross unrealized losses (1,301) (1,145)
Commercial MBS    
Available-for-sale securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 1,795 1,827
12 months or longer, gross unrealized losses (735) (709)
Total, fair value 1,795 1,827
Total, gross unrealized losses (735) (709)
Held-to-maturity securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 1,250 1,285
12 months or longer, gross unrealized losses (232) (224)
Total held-to-maturity securities 1,250 1,285
Total, gross unrealized losses (232) (224)
Other agencies    
Available-for-sale securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 78 81
12 months or longer, gross unrealized losses (7) (6)
Total, fair value 78 81
Total, gross unrealized losses (7) (6)
Held-to-maturity securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 86 95
12 months or longer, gross unrealized losses (7) (6)
Total held-to-maturity securities 86 95
Total, gross unrealized losses (7) (6)
Total U.S. Treasury, federal agency, and other agency securities    
Available-for-sale securities:    
Less than 12 months, fair value 602 750
Less than 12 months, gross unrealized losses (6) (9)
12 months or longer, fair value 15,138 15,462
12 months or longer, gross unrealized losses (3,144) (2,890)
Total, fair value 15,740 16,212
Total, gross unrealized losses (3,150) (2,899)
Held-to-maturity securities:    
Less than 12 months, fair value 159 156
Less than 12 months, gross unrealized losses (2) (1)
12 months or longer, fair value 12,646 13,030
12 months or longer, gross unrealized losses (2,244) (2,038)
Total held-to-maturity securities 12,805 13,186
Total, gross unrealized losses (2,246) (2,039)
Municipal securities    
Available-for-sale securities:    
Less than 12 months, fair value 613 625
Less than 12 months, gross unrealized losses (14) (19)
12 months or longer, fair value 2,522 2,496
12 months or longer, gross unrealized losses (143) (146)
Total, fair value 3,135 3,121
Total, gross unrealized losses (157) (165)
Private-label CMO    
Available-for-sale securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 96 99
12 months or longer, gross unrealized losses (12) (12)
Total, fair value 96 99
Total, gross unrealized losses (12) (12)
Asset-backed securities    
Available-for-sale securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 279 281
12 months or longer, gross unrealized losses (28) (31)
Total, fair value 279 281
Total, gross unrealized losses (28) (31)
Corporate debt    
Available-for-sale securities:    
Less than 12 months, fair value 0 0
Less than 12 months, gross unrealized losses 0 0
12 months or longer, fair value 2,018 2,043
12 months or longer, gross unrealized losses (250) (238)
Total, fair value 2,018 2,043
Total, gross unrealized losses $ (250) $ (238)