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Selected Account Information - Narrative (Details)
6 Months Ended
Mar. 31, 2023
Minimum  
Financing Receivable, Allowance for Credit Loss [Line Items]  
Receivable percentage 6.00%
Notes receivable, term 1 year
Maximum  
Financing Receivable, Allowance for Credit Loss [Line Items]  
Receivable percentage 9.00%
Notes receivable, term 20 years