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Derivative Financial Instruments - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2017 USD ($) ozt	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) ozt T	Jun. 30, 2016 USD ($)	Sep. 30, 2016 USD ($) ozt T
Derivative Financial Instruments [Line Items]
Call options purchased to match the funding requirements			Call options are one, two and three year options
FGL purchases call options to fund the next index credit			One, two or three year call options to fund the next index credit
Spectrum Brands [Member]
Derivative Financial Instruments [Line Items]
Estimated amount of derivative net losses/gains to be reclassified from AOCI into earnings over the next twelve months	$ 2.6	$ (1.1)	$ 11.2	$ (0.2)
Spectrum Brands [Member] | Silver Commodity Swap Contract [Member]
Derivative Financial Instruments [Line Items]
Derivative Contracts Market Value	$ 0.5		$ 0.5		$ 0.6
Derivative, Nonmonetary Notional Amount | ozt	27.0		27.0		31.0
Spectrum Brands [Member] | Interest Rate Contract [Member]
Derivative Financial Instruments [Line Items]
Derivative, Notional Amount	$ 300.0		$ 300.0		$ 300.0
Spectrum Brands [Member] | Interest Rate Swap [Member]
Derivative Financial Instruments [Line Items]
Description of Interest Rate Cash Flow Hedge Activities			0.0176
Derivative net loss/gain			$ 0.6
Spectrum Brands [Member] | Zinc Commodity Swap Contract [Member]
Derivative Financial Instruments [Line Items]
Weight Of Raw Material Under Derivative Contract | T			7.4		6.7
Derivative Contracts Market Value	18.2		$ 18.2		$ 12.8
Estimated amount of derivative net losses/gains to be reclassified from AOCI into earnings over the next twelve months			0.8
Spectrum Brands [Member] | Foreign Exchange Contract [Member]
Derivative Financial Instruments [Line Items]
Derivative Contracts Market Value	283.5		283.5		224.8
Derivative net loss/gain			3.2
Spectrum Brands [Member] | Foreign Exchange Forward [Member]
Derivative Financial Instruments [Line Items]
Derivative Contracts Market Value	204.2		$ 204.2		$ 131.4
Spectrum Brands [Member] | Bronze Commodity Contract [Member]
Derivative Financial Instruments [Line Items]
Weight Of Raw Material Under Derivative Contract | T			1.3		1.0
Derivative Contracts Market Value	5.9		$ 5.9		$ 4.0
Not Designated as Hedging Instrument [Member]
Derivative Financial Instruments [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 2.9		$ 2.9		$ 8.7

X

- Definition

Accumulated other comprehensive income loss cumulative gain loss from derivative instrument before tax.

+ References

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- Definition

Call options purchased to fund the next index credit.

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Call options purchased to match the funding requirements.

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Derivative Contracts Market Value

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Derivative Financial Instruments [Line Items]

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Weight of raw material under derivative contract.

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- Definition

Aggregate notional amount of derivative expressed in nonmonetary units. For example, the number of barrels specified in a fuel oil forward purchase contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
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- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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General discussion of the entity's interest rate cash flow hedge activities.

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