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Acquisitions - Summary of Acquisition and Integration Related Charges Incurred (Detail) (USD $) In Millions, unless otherwise specified | 3 Months Ended
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Dec. 30, 2012 | Jan. 01, 2012
Business Acquisition [Line Items] |  |
Total acquisition and integration related charges | $ 27.2 | $ 9.1
SB/RH Merger [Member] |  |
Business Acquisition [Line Items] |  |
Integration costs | 1.1 | 2.4
Employee termination charges | 0.1 | 0.6
Legal and professional fees | 0.1 | 0.6
Total acquisition and integration related charges | 1.3 | 3.6
HHI Business [Member] |  |
Business Acquisition [Line Items] |  |
Integration costs | 0.1 |
Legal and professional fees | 14.5 |
Total acquisition and integration related charges | 14.6 |
FGL [Member] |  |
Business Acquisition [Line Items] |  |
Total acquisition and integration related charges |  | 0.1
EXCO/HGI Partnership [Member] |  |
Business Acquisition [Line Items] |  |
Total acquisition and integration related charges | 5.0 |
FURminator [Member] |  |
Business Acquisition [Line Items] |  |
Total acquisition and integration related charges | 0.6 | 2.5
BlackFlag [Member] |  |
Business Acquisition [Line Items] |  |
Total acquisition and integration related charges |  | 1.3
Shaser Biosciences, Inc. [Member] |  |
Business Acquisition [Line Items] |  |
Total acquisition and integration related charges | 4.2 |
Other [Member] |  |
Business Acquisition [Line Items] |  |
Total acquisition and integration related charges | $ 1.5 | $ 1.6

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- Definition Business acquisition employee termination charges. + References No definition available. + Details
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Namespace Prefix: | hrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Business acquisition legal and professional fees. + References No definition available. + Details
Name: | hrg_BusinessAcquisitionLegalAndProfessionalFees
Namespace Prefix: | hrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Business combination, acquisition and integration related costs. + References No definition available. + Details
Name: | hrg_BusinessCombinationAcquisitionAndIntegrationRelatedCosts
Namespace Prefix: | hrg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Balance Type: | na
Period Type: | duration

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- Definition Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs. + References No definition available. + Details
Name: | us-gaap_BusinessCombinationIntegrationRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration