INCOME TAXES - Schedule of Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Deferred tax assets
Employee benefits	$ 22.9	$ 25.9
Inventories and receivables	31.9	42.0
Marketing and promotional accruals	5.3	16.0
Property, plant and equipment	2.8	0.9
Unrealized losses	30.5	31.9
Intangibles	9.3	11.1
Operating lease liabilities	27.6	23.0
Net operating loss and other carry forwards	331.6	577.4
Other	17.0	29.4
Total deferred tax assets	478.9	757.6
Deferred tax liabilities
Property, plant and equipment	7.9	18.1
Unrealized gains	11.1	24.4
Intangibles	167.2	303.3
Operating lease assets	24.6	22.4
Investment in partnership	80.3	73.7
Taxes on unremitted foreign earnings	1.2	2.0
Other	13.0	12.0
Total deferred tax liabilities	305.3	455.9
Net deferred tax liabilities	173.6	301.7
Valuation allowance	(333.4)	(337.4)	$ (349.4)
Net deferred tax liabilities, net valuation allowance	(159.8)	(35.7)
Reported as:
Deferred charges and other	15.0	24.4
Deferred taxes (noncurrent liability)	174.8	60.1
SB/RH
Deferred tax assets
Employee benefits	21.6	25.9
Inventories and receivables	31.9	42.0
Marketing and promotional accruals	5.3	16.0
Property, plant and equipment	2.8	0.9
Unrealized losses	30.5	31.9
Intangibles	9.3	11.1
Operating lease liabilities	27.6	23.0
Net operating loss and other carry forwards	227.9	255.6
Other	16.5	27.5
Total deferred tax assets	373.4	433.9
Deferred tax liabilities
Property, plant and equipment	7.9	18.1
Unrealized gains	11.1	24.4
Intangibles	167.2	303.3
Operating lease assets	24.6	22.4
Investment in partnership	80.1	73.4
Taxes on unremitted foreign earnings	1.2	2.0
Other	13.0	12.0
Total deferred tax liabilities	305.1	455.6
Net deferred tax liabilities	68.3	(21.7)
Valuation allowance	(229.6)	(233.7)
Net deferred tax liabilities, net valuation allowance	(161.3)	(255.4)
Reported as:
Deferred charges and other	15.0	23.9
Deferred taxes (noncurrent liability)	$ 176.3	$ 279.3