Debt (Schedule Of Debt) (Details) - USD ($) $ in Millions	6 Months Ended
Mar. 31, 2019	Sep. 30, 2018
Debt Instrument [Line Items]
Debt	$ 2,392.2	$ 4,728.6
Unamortized discount on debt	(0.3)	(19.8)
Debt issuance costs	(33.8)	(57.6)
Less current portion	(16.1)	(26.9)
Long-term debt, net of current portion	2,342.0	4,624.3
Spectrum Brands, Inc. [Member]
Debt Instrument [Line Items]
Debt	2,315.2	3,761.6
Spectrum Brands, Inc. And SB/RH [Member]
Debt Instrument [Line Items]
Debt	2,315.2	4,281.6
SB/RH [Member]
Debt Instrument [Line Items]
Debt	2,315.2	4,281.6
Unamortized discount on debt		(2.8)
Debt issuance costs	(31.9)	(45.5)
Less current portion	(16.1)	(546.9)
Long-term debt, net of current portion	2,267.2	3,686.4
Expiring March 6, 2022 [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolver facility	$ 126.0
Rate	6.80%
Expiring March 6, 2022 [Member] \| SBH And SB/RH [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity date	Mar. 06, 2022
Expiring March 6, 2022 [Member] \| SB/RH [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolver facility	$ 126.0
Rate	6.80%
Term Loan [Member] \| Due June 23, 2022 [Member]
Debt Instrument [Line Items]
Term loan		$ 1,231.7
Rate		4.40%
Term Loan [Member] \| Due June 23, 2022 [Member] \| SBH And SB/RH [Member]
Debt Instrument [Line Items]
Maturity date	Jun. 23, 2022
Term Loan [Member] \| Due June 23, 2022 [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Term loan		$ 1,231.7
Rate		4.40%
CAD Term Loan [Member] \| Due June 23, 2022 [Member]
Debt Instrument [Line Items]
Term loan		$ 32.8
Rate		5.50%
CAD Term Loan [Member] \| Due June 23, 2022 [Member] \| SBH And SB/RH [Member]
Debt Instrument [Line Items]
Maturity date	Jun. 23, 2022
CAD Term Loan [Member] \| Due June 23, 2022 [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Term loan		$ 32.8
Rate		5.50%
4.00% Notes, Due October 1, 2026 [Member]
Debt Instrument [Line Items]
Notes	$ 477.0	$ 494.7
Rate	4.00%	4.00%
4.00% Notes, Due October 1, 2026 [Member] \| SBH And SB/RH [Member]
Debt Instrument [Line Items]
Interest rate	4.00%
Maturity date	Oct. 01, 2026
4.00% Notes, Due October 1, 2026 [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Notes	$ 477.0	$ 494.7
Rate	4.00%	4.00%
5.75% Notes, Due July 15, 2025 [Member]
Debt Instrument [Line Items]
Notes	$ 1,000.0	$ 1,000.0
Rate	5.80%	5.80%
5.75% Notes, Due July 15, 2025 [Member] \| SBH And SB/RH [Member]
Debt Instrument [Line Items]
Interest rate	5.75%
Maturity date	Jul. 15, 2025
5.75% Notes, Due July 15, 2025 [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Notes	$ 1,000.0	$ 1,000.0
Rate	5.80%	5.80%
6.125% Notes, Due December 15, 2024 [Member]
Debt Instrument [Line Items]
Notes	$ 250.0	$ 250.0
Rate	6.10%	6.10%
6.125% Notes, Due December 15, 2024 [Member] \| SBH And SB/RH [Member]
Debt Instrument [Line Items]
Interest rate	6.125%
Maturity date	Dec. 15, 2024
6.125% Notes, Due December 15, 2024 [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Notes	$ 250.0	$ 250.0
Rate	6.10%	6.10%
6.625% Notes, Due November 15, 2022 [Member]
Debt Instrument [Line Items]
Notes	$ 285.0	$ 570.0
Rate	6.60%	6.60%
6.625% Notes, Due November 15, 2022 [Member] \| SBH And SB/RH [Member]
Debt Instrument [Line Items]
Interest rate	6.625%
Maturity date	Nov. 15, 2022
6.625% Notes, Due November 15, 2022 [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Notes	$ 285.0	$ 570.0
Rate	6.60%	6.60%
Intercompany Note [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Intercompany note with parent		$ 520.0
Rate		4.30%
Other Notes And Obligations [Member]
Debt Instrument [Line Items]
Other notes and obligations	$ 7.8	$ 7.3
Rate	9.30%	9.50%
Other Notes And Obligations [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Other notes and obligations	$ 7.8	$ 7.3
Rate	9.30%	9.50%
Obligations Under Capital Leases [Member]
Debt Instrument [Line Items]
Obligations under capital leases	$ 169.4	$ 175.1
Rate	5.50%	5.50%
Obligations Under Capital Leases [Member] \| SB/RH [Member]
Debt Instrument [Line Items]
Obligations under capital leases	$ 169.4	$ 175.1
Rate	5.50%	5.50%
HRG - 7.75% Senior Unsecured Notes, Due January 15, 2022 [Member]
Debt Instrument [Line Items]
Interest rate	7.75%
Maturity date	Jan. 15, 2022
HRG - 7.75% Senior Unsecured Notes, Due January 15, 2022 [Member] \| Unsecured Notes [Member]
Debt Instrument [Line Items]
Notes		$ 890.0
Rate		7.80%
Salus - Unaffiliated Long-Term Debt Of Consolidated VIE [Member]
Debt Instrument [Line Items]
Long-term debt	$ 77.0	$ 77.0

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Including the current and noncurrent portions, aggregate carrying value as of the balance sheet date of loans payable (with maturities initially due after one year or beyond the operating cycle if longer).

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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