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Fair Value of Financial Instruments - Additional Information (Detail) (USD $) | 3 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Percentage of male contractholder | 50.00% |  |  |
Percentage of female contractholder | 50.00% |  |  |
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount | $ 0 |  |  |
Net transfer In (Out) of Level 3 (a) |  | [1] | $ (14,100,000) | [2]
[1] | {F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOjkzMWUzNTc5OTc5ZDQ0NDA5NDZlZDlmNTcyN2JmYzMyfFRleHRTZWxlY3Rpb246REVBMUNFNjUwNzU2Q0U3MUVERDcwNjlDQTlGMzA0OTIM}
[2] | (a)The net transfers in and out of Level 3 during the three months ended December 30, 2012 was exclusively to or from Level 2.

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- Definition Percentage of female contract holder. + References No definition available. + Details
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- Definition Percentage of male contract holder. + References No definition available. + Details
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Namespace Prefix: | hrg_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of transfers of assets measured on a recurring basis out of Level 1 of the fair value hierarchy into Level 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Details
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- Definition Amount of transfer of financial instrument classified as an asset into (out of) level 3 of the fair value hierarchy. + References No definition available. + Details
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