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ADVANCES FROM THE FEDERAL HOME LOAN BANK - NARRATIVE (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Federal Home Loan Bank, Advances [Line Items]    
Weighted average rate percentage 2.32% 2.26%
Advances, amount available immediately $ 3,052.0  
Advances, amount available with additional collateral $ 4,524.1  
Advances, amount available with additional collateral, term (in years) 10 years  
Minimum    
Federal Home Loan Bank, Advances [Line Items]    
Interest rate percentage 2.07% 1.68%
Maximum    
Federal Home Loan Bank, Advances [Line Items]    
Interest rate percentage 2.82% 2.82%