INTANGIBLE ASSETS, NET (Details) - USD ($) $ in Millions	Mar. 31, 2026	Sep. 30, 2025
Finite-Lived Intangible Assets
Carrying Amount	$ 328.4	$ 328.4
Accumulated Amortization	(211.9)	(203.4)
Net Amount	116.5	125.0
Customer relationships
Finite-Lived Intangible Assets
Carrying Amount	160.8	160.8
Accumulated Amortization	(107.8)	(103.4)
Net Amount	53.0	57.4
Trademarks and brands
Finite-Lived Intangible Assets
Carrying Amount	164.5	164.5
Accumulated Amortization	(101.0)	(96.9)
Net Amount	63.5	67.6
Other intangible assets
Finite-Lived Intangible Assets
Carrying Amount	3.1	3.1
Accumulated Amortization	(3.1)	(3.1)
Net Amount	$ 0.0	$ 0.0