Quarterly report [Sections 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, 2025
Dec. 31, 2024
Available-for-sale securities:    
Less than 12 Months, Fair Value $ 4,224 $ 4,726
Less than 12 Months, Gross Unrealized Losses (42) (74)
Over 12 Months, Fair Value 18,032 18,038
Over 12 Months, Gross Unrealized Losses (3,008) (3,409)
Total, Fair Value 22,256 22,764
Total, Gross Unrealized Losses (3,050) (3,483)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 1,181 1,843
Less than 12 Months, Gross Unrealized Losses (8) (25)
Over 12 Months, Fair Value 11,468 11,495
Over 12 Months, Gross Unrealized Losses (1,979) (2,260)
Total held-to-maturity securities 12,649 13,338
Total, Gross Unrealized Losses (1,987) (2,285)
U.S. Treasury    
Available-for-sale securities:    
Less than 12 Months, Fair Value 1,975 3,153
Less than 12 Months, Gross Unrealized Losses (14) (43)
Over 12 Months, Fair Value 0 0
Over 12 Months, Gross Unrealized Losses 0 0
Total, Fair Value 1,975 3,153
Total, Gross Unrealized Losses (14) (43)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 1,125 1,581
Less than 12 Months, Gross Unrealized Losses (7) (22)
Over 12 Months, Fair Value 0 0
Over 12 Months, Gross Unrealized Losses 0 0
Total held-to-maturity securities 1,125 1,581
Total, Gross Unrealized Losses (7) (22)
Total U.S. Treasury, federal agency, and other agency securities    
Available-for-sale securities:    
Less than 12 Months, Fair Value 2,875 3,692
Less than 12 Months, Gross Unrealized Losses (17) (49)
Over 12 Months, Fair Value 14,345 14,299
Over 12 Months, Gross Unrealized Losses (2,797) (3,171)
Total, Fair Value 17,220 17,991
Total, Gross Unrealized Losses (2,814) (3,220)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 1,181 1,843
Less than 12 Months, Gross Unrealized Losses (8) (25)
Over 12 Months, Fair Value 11,467 11,494
Over 12 Months, Gross Unrealized Losses (1,979) (2,260)
Total held-to-maturity securities 12,648 13,337
Total, Gross Unrealized Losses (1,987) (2,285)
Residential MBS    
Available-for-sale securities:    
Less than 12 Months, Fair Value 215 275
Less than 12 Months, Gross Unrealized Losses (2) (5)
Over 12 Months, Fair Value 9,692 9,676
Over 12 Months, Gross Unrealized Losses (1,698) (1,966)
Total, Fair Value 9,907 9,951
Total, Gross Unrealized Losses (1,700) (1,971)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 56 99
Less than 12 Months, Gross Unrealized Losses (1) (2)
Over 12 Months, Fair Value 7,084 7,097
Over 12 Months, Gross Unrealized Losses (1,155) (1,334)
Total held-to-maturity securities 7,140 7,196
Total, Gross Unrealized Losses (1,156) (1,336)
Residential CMO    
Available-for-sale securities:    
Less than 12 Months, Fair Value 665 243
Less than 12 Months, Gross Unrealized Losses (1) (1)
Over 12 Months, Fair Value 2,792 2,802
Over 12 Months, Gross Unrealized Losses (376) (433)
Total, Fair Value 3,457 3,045
Total, Gross Unrealized Losses (377) (434)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 0 163
Less than 12 Months, Gross Unrealized Losses 0 (1)
Over 12 Months, Fair Value 3,142 3,152
Over 12 Months, Gross Unrealized Losses (610) (690)
Total held-to-maturity securities 3,142 3,315
Total, Gross Unrealized Losses (610) (691)
Commercial MBS    
Available-for-sale securities:    
Less than 12 Months, Fair Value 0 0
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 1,795 1,752
Over 12 Months, Gross Unrealized Losses (719) (767)
Total, Fair Value 1,795 1,752
Total, Gross Unrealized Losses (719) (767)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 0 0
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 1,177 1,176
Over 12 Months, Gross Unrealized Losses (211) (231)
Total held-to-maturity securities 1,177 1,176
Total, Gross Unrealized Losses (211) (231)
Other agencies    
Available-for-sale securities:    
Less than 12 Months, Fair Value 20 21
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 66 69
Over 12 Months, Gross Unrealized Losses (4) (5)
Total, Fair Value 86 90
Total, Gross Unrealized Losses (4) (5)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 0 0
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 64 69
Over 12 Months, Gross Unrealized Losses (3) (5)
Total held-to-maturity securities 64 69
Total, Gross Unrealized Losses (3) (5)
Municipal securities    
Available-for-sale securities:    
Less than 12 Months, Fair Value 1,349 985
Less than 12 Months, Gross Unrealized Losses (25) (25)
Over 12 Months, Fair Value 2,266 2,336
Over 12 Months, Gross Unrealized Losses (101) (107)
Total, Fair Value 3,615 3,321
Total, Gross Unrealized Losses (126) (132)
Held-to-maturity securities:    
Less than 12 Months, Fair Value 0 0
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 1 1
Over 12 Months, Gross Unrealized Losses 0 0
Total held-to-maturity securities 1 1
Total, Gross Unrealized Losses 0 0
Corporate debt    
Available-for-sale securities:    
Less than 12 Months, Fair Value 0 0
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 1,037 1,053
Over 12 Months, Gross Unrealized Losses (86) (102)
Total, Fair Value 1,037 1,053
Total, Gross Unrealized Losses (86) (102)
Asset-backed securities    
Available-for-sale securities:    
Less than 12 Months, Fair Value 0 49
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 298 263
Over 12 Months, Gross Unrealized Losses (15) (19)
Total, Fair Value 298 312
Total, Gross Unrealized Losses (15) (19)
Private-label CMO    
Available-for-sale securities:    
Less than 12 Months, Fair Value 0 0
Less than 12 Months, Gross Unrealized Losses 0 0
Over 12 Months, Fair Value 86 87
Over 12 Months, Gross Unrealized Losses (9) (10)
Total, Fair Value 86 87
Total, Gross Unrealized Losses $ (9) $ (10)