Annual report pursuant to Section 13 and 15(d)

INVESTMENT SECURITIES AND OTHER SECURITIES - Contractual Maturities (Details)

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INVESTMENT SECURITIES AND OTHER SECURITIES - Contractual Maturities (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities, Under 1 year, Amortized Cost $ 3,380 $ 518
Available-for-sale securities, After 1 year through 5 years, Amortized Cost 2,484 2,182
Available-for-sale securities, After 5 years through 10 years, Amortized Cost 2,392 3,106
Available-for-sale securities, After 10 years, Amortized Cost 20,309 21,297
Available-for-sale securities, Amortized Cost 28,565 27,103
Available-for-sale securities, Under 1 year, Fair Value 3,372 511
Available-for-sale securities, After 1 year through 5 years, Fair Value 2,338 2,033
Available-for-sale securities, After 5 years through 10 years, Fair Value 2,255 2,814
Available-for-sale securities, After 10 years, Fair Value 17,340 18,065
Available-for-sale securities, Fair Value 25,305 23,423
Held-to-maturity securities, Under 1 year, Amortized Cost 1 0
Held-to-maturity securities, After 1 year through 5 years, Amortized Cost 48 72
Held-to-maturity securities, After 5 years through 10 years, Amortized Cost 69 71
Held-to-maturity securities, Amortized Cost 15,750 17,052
Held-to-maturity securities, After 10 years, Amortized Cost 15,632 16,909
Held-to-maturity securities, Under 1 year, Fair Value 1 0
Held-to-maturity securities, After 1 year through 5 years, Fair Value 46 68
Held-to-maturity securities, After 5 years through 10 years, Fair Value 66 66
Held-to-maturity securities, After 10 years, Fair Value 13,605 14,620
Held-to-maturity securities, Fair Value $ 13,718 $ 14,754