Derivative Financial Instruments - Summary of Gain (Loss) Recognized in Income on Oil and Gas Commodity Contracts on (Detail) - Spectrum Brands [Member] - USD ($) $ in Millions	Jun. 30, 2017	Sep. 30, 2016
Zinc Commodity Swap Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Contracts Market Value	$ 18.2	$ 12.8
Bronze Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Contracts Market Value	$ 5.9	$ 4.0

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.

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