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Significant Accounting Policies and Practices and Recent Accounting Pronouncements - Additional Details (Details) - USD ($)
$ in Millions
6 Months Ended
Mar. 31, 2018
Sep. 30, 2017
Subsidiary or Equity Method Investee [Line Items]    
Document Period End Date Mar. 31, 2018  
Debt Issuance Costs, Net $ 63.1 $ 76.1
Spectrum Brands [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 38.00%  
Customer Relationships [Member] | Minimum [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Amortization period, intangible asset 2 years  
Customer Relationships [Member] | Maximum    
Subsidiary or Equity Method Investee [Line Items]    
Amortization period, intangible asset 20 years  
Technology Assets [Member] | Minimum [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Amortization period, intangible asset 6 years  
Technology Assets [Member] | Maximum    
Subsidiary or Equity Method Investee [Line Items]    
Amortization period, intangible asset 18 years  
Trade Name [Member] | Minimum [Member]    
Subsidiary or Equity Method Investee [Line Items]    
Amortization period, intangible asset 5 years  
Trade Name [Member] | Maximum    
Subsidiary or Equity Method Investee [Line Items]    
Amortization period, intangible asset 13 years