OTHER BORROWINGS, Subordinated Notes (Details) - Subordinated Debt - Subordinated notes due 2030 $ in Millions	3 Months Ended
	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Debt Instrument, face amount	$ 98
Stated interest rate (as a percent)	5.75%
Redemption price percentage (as a percent)	100.00%
Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Spread on variable interest rate (as a percent)	5.62%