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OTHER BORROWINGS, Other (Details) - Revolving Credit Facility - The Credit Facility - USD ($)
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Feb. 19, 2019
Debt Instrument [Line Items]      
Revolving credit agreement commitment fee percentage 0.15%    
Line of Credit      
Debt Instrument [Line Items]      
Revolving credit agreement maximum borrowing capacity     $ 500,000,000
Long-term line of credit $ 0 $ 0  
Line of Credit | Raymond James Financial Inc      
Debt Instrument [Line Items]      
Revolving credit agreement maximum borrowing capacity     $ 300,000,000