SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Restricted cash	$ 1.6	$ 0.0
Shipping and handling costs	266.9	272.6	$ 274.2
Advertising costs	91.7	59.1	64.1
Research and development costs	$ 28.1	22.5	26.7
Percentage greater than the largest amount of recognized income tax positions which likely of being realized	50.00%
Exchange losses on foreign currency transactions	$ 7.5	$ 5.1	$ 14.5
Minimum
Revenues from External Customers and Long-Lived Assets [Line Items]
Extended warranty, term	1 year
Maximum
Revenues from External Customers and Long-Lived Assets [Line Items]
Extended warranty, term	7 years