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Description of Business, Basis of Presentation and Recent Accounting Pronouncements - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Dec. 01, 2015
Dec. 31, 2015
Dec. 31, 2014
Nov. 08, 2015
Sep. 30, 2015
Business Acquisition [Line Items]          
Gain (Loss) on Disposition of Oil and Gas Property   $ 105.6 $ 0.0    
Long-term debt   6,410.9     $ 6,439.1
Goodwill   2,478.1     2,487.4
Compass Production Partners [Member]          
Business Acquisition [Line Items]          
Proceeds from Sale of Oil and Gas Property and Equipment $ 147.5 4.2      
Transaction costs, Sale of Oil and Gas Properties 1.9        
Gain (Loss) on Disposition of Oil and Gas Property $ 105.6        
Compass Production Partners [Member] | Compass Credit Agreement [Member]          
Business Acquisition [Line Items]          
Borrowing Capacity   160.0     $ 327.0
Compass Production Partners [Member] | Revolving Credit Facility [Member]          
Business Acquisition [Line Items]          
Repayments of Debt   $ 167.0      
Spectrum Brands [Member]          
Business Acquisition [Line Items]          
Percentage Of Ownership Interest   57.90%      
FGL [Member]          
Business Acquisition [Line Items]          
Percentage Of Ownership Interest   80.40%      
Compass Production Partners [Member] | Compass Production Partners [Member]          
Business Acquisition [Line Items]          
Percentage Of Ownership Interest   99.80%      
FGL [Member] | Anbang Insurance Group Co., Ltd. [Member]          
Business Acquisition [Line Items]          
Business Acquisition, Share Price       $ 26.80