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OTHER BORROWINGS, Credit Facility (Details) - Revolving Credit Facility - The Credit Facility - USD ($)
12 Months Ended
Sep. 30, 2023
Apr. 30, 2023
Sep. 30, 2022
Debt Instrument [Line Items]      
Revolving credit agreement commitment fee percentage 0.125%    
Line of Credit      
Debt Instrument [Line Items]      
Revolving credit agreement maximum borrowing capacity   $ 750,000,000  
Borrowings outstanding $ 0   $ 0