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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

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- Definition Call options purchased to fund the next index credit. + References No definition available. + Details
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- Definition Call options purchased to match the funding requirements. + References No definition available. + Details
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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 -Sentence Column B + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=64830801&loc=SL51823488-111719 + Details
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