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Derivative Financial Instruments - Additional Information (Detail) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2012
Derivative Financial Instruments [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Derivatives | $ 8,900,000 |  |  |  |
Document Period End Date | Sep. 30, 2017 |  |  |  |
Derivative Asset, Fair Value, Gross Asset | $ 100,000 |  |  |  |
Long-term debt | 5,801,900,000 | $ 5,575,400,000 |  |  |
Spectrum Brands [Member] |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | (500,000) | (2,300,000) | $ 23,100,000 |  |
Spectrum Brands [Member] | Standby Letters of Credit |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Letters of Credit Outstanding, Amount |  |  |  | $ 0 | $ 0
Spectrum Brands [Member] | Interest Rate Contract [Member] |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | $ 300,000 |  |  |  |
Derivative, Fixed Interest Rate | 0.00% |  |  |  |
Derivative, Notional Amount | $ 300,000,000 | $ 300,000,000 |  |  |
Derivative, Remaining Maturity | 2 years 7 months | 6 months |  |  |
Spectrum Brands [Member] | Foreign exchange contracts |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Accumulated Other Comprehensive Income Loss Cumulative Gain Loss From Derivative Instrument Before Tax | $ 1,000,000 |  |  |  |
Derivative Contracts Market Value | 67,500,000 | $ 29,900,000 |  |  |
Spectrum Brands [Member] | Foreign exchange forward agreements |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Derivative Contracts Market Value | 62,900,000 | 62,000,000 |  |  |
Spectrum Brands [Member] | Zinc Commodity Swap Contract [Member] |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net | 200,000 |  |  |  |
Spectrum Brands [Member] | Bronze Commodity Contract [Member] |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Derivative Contracts Market Value | 6,600,000 | 4,000,000 |  |  |
Salus Capital Partners LLC |  |  |  |  |
Derivative Financial Instruments [Line Items] |  |  |  |  |
Long-term debt | $ 22,200,000 | $ 30,300,000 |  |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624177-113959 + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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