Quarterly report pursuant to Section 13 or 15(d)

INVESTMENT SECURITIES AND OTHER SECURITIES - Narrative (Details)

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INVESTMENT SECURITIES AND OTHER SECURITIES - Narrative (Details)
$ in Millions
9 Months Ended
Sep. 30, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
Investment Securities [Line Items]    
Number of municipal bonds classified as AFS debt securities | security 1  
AFS debt security charge-off $ 2  
Allowance related to investment securities 0 $ 0
Allowance related to investment securities, available for sale securities 0 0
Asset Pledged as Collateral    
Investment Securities [Line Items]    
Investment securities pledged $ 36,800 $ 35,100