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, 2022
Dec. 31, 2021
Available-for-sale securities:    
Less than 12 months, fair value $ 20,580 $ 20,747
Less than 12 months, gross unrealized losses (1,296) (304)
12 months or longer, fair value 3,087 319
12 months or longer, gross unrealized losses (346) (11)
Total, fair value 23,667 21,066
Total, gross unrealized losses (1,642) (315)
Held-to-maturity securities:    
Less than 12 months, fair value 15,597 7,608
Less than 12 months, gross unrealized losses (758) (84)
12 months or longer, fair value 242 0
12 months or longer, gross unrealized losses (24) 0
Total, fair value 15,839 7,608
Total, gross unrealized losses (782) (84)
Residential CMO    
Available-for-sale securities:    
Less than 12 months, fair value 2,254 2,925
Less than 12 months, gross unrealized losses (115) (40)
12 months or longer, fair value 100 0
12 months or longer, gross unrealized losses (12) 0
Total, fair value 2,354 2,925
Total, gross unrealized losses (127) (40)
Held-to-maturity securities:    
Less than 12 months, fair value 4,803 1,453
Less than 12 months, gross unrealized losses (221) (20)
12 months or longer, fair value 0 0
12 months or longer, gross unrealized losses 0 0
Total, fair value 4,803 1,453
Total, gross unrealized losses (221) (20)
Residential MBS    
Available-for-sale securities:    
Less than 12 months, fair value 11,723 13,491
Less than 12 months, gross unrealized losses (754) (160)
12 months or longer, fair value 2,020 0
12 months or longer, gross unrealized losses (207) 0
Total, fair value 13,743 13,491
Total, gross unrealized losses (961) (160)
Held-to-maturity securities:    
Less than 12 months, fair value 8,780 5,837
Less than 12 months, gross unrealized losses (471) (59)
12 months or longer, fair value 242 0
12 months or longer, gross unrealized losses (24) 0
Total, fair value 9,022 5,837
Total, gross unrealized losses (495) (59)
Commercial MBS    
Available-for-sale securities:    
Less than 12 months, fair value 1,419 1,251
Less than 12 months, gross unrealized losses (145) (38)
12 months or longer, fair value 400 0
12 months or longer, gross unrealized losses (78) 0
Total, fair value 1,819 1,251
Total, gross unrealized losses (223) (38)
Held-to-maturity securities:    
Less than 12 months, fair value 1,841 318
Less than 12 months, gross unrealized losses (62) (5)
12 months or longer, fair value 0 0
12 months or longer, gross unrealized losses 0 0
Total, fair value 1,841 318
Total, gross unrealized losses (62) (5)
Other agencies    
Available-for-sale securities:    
Less than 12 months, fair value 158 140
Less than 12 months, gross unrealized losses (5) (1)
12 months or longer, fair value 0 0
12 months or longer, gross unrealized losses 0 0
Total, fair value 158 140
Total, gross unrealized losses (5) (1)
Held-to-maturity securities:    
Less than 12 months, fair value 173  
Less than 12 months, gross unrealized losses (4)  
12 months or longer, fair value 0  
12 months or longer, gross unrealized losses 0  
Total, fair value 173  
Total, gross unrealized losses (4)  
Total U.S. Treasury, federal agency and other agency securities    
Available-for-sale securities:    
Less than 12 months, fair value 15,554 17,807
Less than 12 months, gross unrealized losses (1,019) (239)
12 months or longer, fair value 2,520 0
12 months or longer, gross unrealized losses (297) 0
Total, fair value 18,074 17,807
Total, gross unrealized losses (1,316) (239)
Held-to-maturity securities:    
Less than 12 months, fair value 15,597 7,608
Less than 12 months, gross unrealized losses (758) (84)
12 months or longer, fair value 242 0
12 months or longer, gross unrealized losses (24) 0
Total, fair value 15,839 7,608
Total, gross unrealized losses (782) (84)
Municipal securities    
Available-for-sale securities:    
Less than 12 months, fair value 2,492 859
Less than 12 months, gross unrealized losses (88) (22)
12 months or longer, fair value 278 319
12 months or longer, gross unrealized losses (12) (11)
Total, fair value 2,770 1,178
Total, gross unrealized losses (100) (33)
Private-label CMO    
Available-for-sale securities:    
Less than 12 months, fair value 107 78
Less than 12 months, gross unrealized losses (3) (1)
12 months or longer, fair value 0 0
12 months or longer, gross unrealized losses 0 0
Total, fair value 107 78
Total, gross unrealized losses (3) (1)
Asset-backed securities    
Available-for-sale securities:    
Less than 12 months, fair value 332 237
Less than 12 months, gross unrealized losses (17) (4)
12 months or longer, fair value 24 0
12 months or longer, gross unrealized losses (2) 0
Total, fair value 356 237
Total, gross unrealized losses (19) (4)
Corporate debt    
Available-for-sale securities:    
Less than 12 months, fair value 2,095 1,766
Less than 12 months, gross unrealized losses (169) (38)
12 months or longer, fair value 265 0
12 months or longer, gross unrealized losses (35) 0
Total, fair value 2,360 1,766
Total, gross unrealized losses $ (204) $ (38)