Annual report [Section 13 and 15(d), not S-K Item 405]

DEBT AND FINANCING ARRANGEMENTS - Summary of Receivables Sold (Details)

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DEBT AND FINANCING ARRANGEMENTS - Summary of Receivables Sold (Details) - Receivables Purchase Agreement - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Transfer of Financial Assets Accounted for as Sales [Line Items]    
Gross receivables sold $ 281,988 $ 379,094
Cash collections reinvested (312,688) (384,594)
Net cash (reinvested) received $ (30,700) $ (5,500)