INCOME TAXES - Schedule of Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Income Taxes [Line Items]
United States	$ (263.0)	$ (147.2)	$ (42.0)
Outside the United States	172.7	136.1	16.9
Loss from continuing operations before income taxes	(90.3)	(11.1)	(25.1)
SB/RH
Income Taxes [Line Items]
United States	(260.6)	(143.8)	(110.8)
Outside the United States	172.7	136.1	16.9
Loss from continuing operations before income taxes	$ (87.9)	$ (7.7)	$ (93.9)