v3.26.1
INVESTMENT SECURITIES AND OTHER SECURITIES - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Investment Securities [Line Items]    
Allowance related to investment securities, available for sale securities $ 0 $ 0
Allowance related to investment securities 0 0
Asset Pledged as Collateral    
Investment Securities [Line Items]    
Investment securities pledged $ 36,500 $ 29,700