XML 110 R97.htm IDEA: XBRL DOCUMENT v3.8.0.1
Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Millions
 3 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Sep. 30, 2017
Commitment And Contingencies [Line Items]      
Document Period End Date Dec. 31, 2017    
Commitments and contingencies  
Inventory Recall Expense 1.6 $ 0.0  
Product Liability Accrual, Period Expense 0.4    
Long-term debt 5,915.1   5,802.2
Spectrum Brands [Member]      
Commitment And Contingencies [Line Items]      
Environmental costs recognized, capitalized     4.4
Product Liability Accrual, Period Expense 7.3    
Spectrum Brands [Member]      
Commitment And Contingencies [Line Items]      
Product Liability Accrual, Component Amount 4.0   5.3
Product Warranty Accrual, Current 5.7   $ 5.4
Inventory Recall Expense 1.6    
Incremental Costs To Dispose Of Product And Operational Expenses 5.3    
Spectrum Brands [Member] | Spectrum Brands [Member]      
Commitment And Contingencies [Line Items]      
Environmental costs recognized, capitalized $ 4.3