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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount classified as goodwill attributable to disposal group held for sale or disposed of.

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DIVESTITURES - Narrative (Details) - USD ($)				12 Months Ended
DIVESTITURES - Narrative (Details) - USD ($)	Sep. 08, 2021	Jan. 28, 2019	Jan. 02, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2019	Mar. 29, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of discontinued operations, net of cash				$ 0	$ 3,600,000	$ 2,859,500,000
Loss on sale of Coevorden operations				$ 0	26,800,000	0
H&G Supply Agreement \| Energizer
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Supply agreement contract term				24 months
SB/RH
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of discontinued operations, net of cash				$ 0	3,600,000	2,859,500,000
Loss on sale of Coevorden operations				0	26,800,000	0
Discontinued Operations \| SB/RH
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest expense, debt						75,200,000
Tax benefit to discontinued operations						(223,400,000)
HHI Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of discontinued operations, net of cash	$ 4,300,000,000
Termination fee	$ 350,000,000
Depreciation and amortization expense				31,100,000	33,900,000	33,500,000
Global Battery And Lighting
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration			$ 1,956,200,000
Pretax gain on sale			989,800,000		3,000,000
Contingent purchase price adjustment			$ 200,000,000
Contingent obligation					197,000,000
Indemnification of assets				35,000,000	50,200,000
Transaction costs associated with the divestiture						12,900,000
Global Battery And Lighting \| Other Current Liabilities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net settlement payable				17,300,000	33,000,000
Global Battery And Lighting \| Other long term liabilities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net settlement payable				17,700,000	17,200,000
Global Battery And Lighting \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pretax gain on sale						989,800,000
Global Battery And Lighting \| Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Tax benefit to discontinued operations					10,500,000
Global Auto Care \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Transaction costs associated with the divestiture						8,800,000
Loss on sale of business						111,000,000.0
Depreciation and amortization expense						1,400,000
Global Auto Care \| Discontinued Operations, Disposed of by Sale \| Other long term liabilities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Indemnification of assets				$ 1,500,000	1,400,000
Global Auto Care \| Discontinued Operations, Disposed of by Sale \| Energizer
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase price, cash		$ 938,700,000
Loss on sale of business						$ 111,000,000
Global Auto Care \| Discontinued Operations, Disposed of by Sale \| Energizer \| Common Stock
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Stock consideration, value		$ 242,100,000
Coevorden Operations \| Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Purchase price, cash							$ 29,000,000
Goodwill							$ 10,600,000
Loss on sale of Coevorden operations					$ 26,800,000
Operations of distribution center term				18 months