Quarterly report pursuant to Section 13 or 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
Sep. 30, 2023
Dec. 31, 2022
Available-for-sale securities, amortized cost:    
Under 1 year $ 434 $ 518
After 1 year through 5 years 2,636 2,182
After 5 years through 10 years 2,537 3,106
After 10 years 20,655 21,297
Total available-for-sale securities 26,262 27,103
Available-for-sale securities, fair value:    
Under 1 year 425 511
After 1 year through 5 years 2,437 2,033
After 5 years through 10 years 2,321 2,814
After 10 years 16,680 18,065
Total available-for-sale securities 21,863 23,423
Held-to-maturity securities, amortized cost:    
Under 1 year 1 0
After 1 year through 5 years 52 72
After 5 years through 10 years 72 71
After 10 years 16,023 16,909
Total held-to-maturity securities 16,148 17,052
Held-to-maturity securities, fair value:    
Under 1 year 1 0
After 1 year through 5 years 49 68
After 5 years through 10 years 66 66
After 10 years 13,193 14,620
Total held-to-maturity securities $ 13,309 $ 14,754