DEBT - Short-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 2026	Sep. 30, 2025
Short-Term Debt [Line Items]
Short-term borrowings	$ 330.5	$ 287.7
U.S. accounts receivable credit facilities | UNITED STATES
Short-Term Debt [Line Items]
Short-term borrowings	200.0	179.7
U.S. accounts receivable credit facilities | Europe
Short-Term Debt [Line Items]
Short-term borrowings	113.8	95.3
Other debt
Short-Term Debt [Line Items]
Short-term borrowings	$ 16.7	$ 12.7