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ADVANCES FROM THE FEDERAL HOME LOAN BANK - NARRATIVE (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Federal Home Loan Bank, Advances [Line Items]      
Weighted average rate percentage 2.26% 1.18%  
Advances, collateral pledged $ 3,823.1 $ 4,286.1  
Advances, maximum amount 1,360.5 $ 353.5 $ 1,462.5
Advances, amount available immediately 2,014.2    
Advances, amount available with additional collateral $ 3,893.3    
Advances, amount available with additional collateral, term (in years) 10 years    
Minimum      
Federal Home Loan Bank, Advances [Line Items]      
Interest rate percentage 1.68% 0.15%  
Maximum      
Federal Home Loan Bank, Advances [Line Items]      
Interest rate percentage 2.82% 2.86%