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Commitments and Contingencies - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
 1 Months Ended 3 Months Ended
Jul. 31, 2012
Dec. 30, 2012
Commitment And Contingencies [Line Items]    
Reserves for legal, environmental and regulatory matters   $ 21.2
Notional amount of unfunded, legally binding lending commitments   128.8
Expiration of partial amount of unfunded, legally binding lending commitments   9.1
Interest rate on senior notes   7.875%
Maximum [Member]
    
Commitment And Contingencies [Line Items]    
Expiry date of partial amount of notional amount   1 year
Expiry date of remainder part of notional amount   4 years
Minimum [Member]
    
Commitment And Contingencies [Line Items]    
Estimated range of external legal costs   1.0
Expiry date of remainder part of notional amount   1 year
FGL [Member]
    
Commitment And Contingencies [Line Items]    
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
Spectrum Brands [Member]
    
Commitment And Contingencies [Line Items]    
Environmental costs recognized, capitalized