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SHARE BASED COMPENSATION - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised (in shares)	0	60,000.00	10,000.00
Intrinsic value of options exercised	$ 0.0	$ 2.5	$ 0.1
Cash settlement		$ 3.4	$ 0.3
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Nonvested award, cost not yet recognized, period for recognition	1 year 6 months
Restricted Stock Units \| Specturm And SB/RH
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unrecognized pre-tax compensation cost	$ 39.6
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	2 years 3 months 18 days