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Share Based Compensation - Summary of Award Plans (Details)	Sep. 30, 2020 shares
HRG Group 2011 Omnibus Equity Award Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized (in shares)	2,700,000
Shares available (in shares)	800,000
Harbinger Group, Inc. 2014 Warrant Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized (in shares)	3,000,000.0
Shares available (in shares)	0
Spectrum Brands Holdings, Inc. 2011 Omnibus Equity Awards Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized (in shares)	7,100,000
Shares available (in shares)	200,000
Spectrum Brands Holdings, Inc. 2020 Omnibus Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized (in shares)	1,200,000
Shares available (in shares)	1,200,000

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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