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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 6 Months Ended | 3 Months Ended | 1 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2013 Maximum [Member] | Mar. 31, 2013 Minimum [Member] | Jul. 31, 2012 FGL [Member] | Mar. 31, 2013 FGL [Member] | Mar. 31, 2013 Spectrum Brands [Member]
Commitment And Contingencies [Line Items] |  |  |  |  |  |
Reserves for legal, environmental and regulatory matters | $ 21.6 |  |  |  |  |
Environmental costs recognized, capitalized |  |  |  |  |  | 5.3
Accrued amount of guaranty fund assessments |  |  |  |  | 5.8 |
Estimated future premium tax deductions |  |  |  |  | 4.3 |
Pre-tax charge, net of reinsurance, to increase reserves to cover potential benefits payable |  |  |  | 11.0 |  |
Administrative costs and potential liabilities |  |  |  |  | 2.0 |
Estimated range of external legal costs |  | 3.0 | 1.0 |  |  |
Notional amount of unfunded, legally binding lending commitments | 140.9 |  |  |  |  |
Expiration of partial amount of unfunded, legally binding lending commitments | $ 11.1 |  |  |  |  |
Expiry date of partial amount of notional amount |  | 1 year |  |  |  |
Expiry date of remainder part of notional amount |  | 4 years | 1 year |  |  |
Interest rate on senior notes | 7.875% |  |  |  |  |

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- Definition Benefit Expense Net Of Reinsurance To Increase Reserves To Cover Potential Benefits Payable + References No definition available. + Details
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- Definition Amount of costs recognized in the balance sheet for known or estimated future costs arising from requirements to perform activities to remediate one or more sites. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 25 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6906153&loc=d3e11660-110855 + Details
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- Definition The amount of insurance-related assessment liability that is expected to be recovered through a premium tax offset based on current laws applied to in-force policies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 405 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 97-3 -Paragraph 22, 27 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The liability as of the balance sheet date representing required funding mandated by statute or regulatory authority that is related directly or indirectly to underwriting activities, including pools for self-insurance and excluding premium taxes and income taxes. The funds derived from the assessments generally enable a government guarantor to pay insurance claims in the event that the underwriting insurer is insolvent or otherwise unable to meet its payment obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 405 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=9154593&loc=d3e23169-109297 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 405 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392405&loc=d3e24119-109301 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 97-3 -Paragraph 27 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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