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Significant Accounting Policies and Practices and Recent Accounting Pronouncements - Change in Accounting Estimates (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement Or Change In Accounting Principle, Effect of Change on Net Change in Cash Due to Operations Activities	$ 4.0	$ 2.5
New Accounting Pronouncement Or Change In Accounting Principle, Effect of Change on Net Change in Cash Due to Financing Activities	$ (4.0)	$ (2.5)

X

- Definition

New Accounting Pronouncement Or Change In Accounting Principle, Effect of Change on Net Change in Cash Due to Financing Activities

+ References

No definition available.

+ Details

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X

- Definition

New Accounting Pronouncement Or Change In Accounting Principle, Effect of Change on Net Change in Cash Due to Operations Activities

+ References

No definition available.

+ Details

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Namespace Prefix:	hrg_
Data Type:	xbrli:monetaryItemType
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X

- Details

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