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Related Party Transactions (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Jan. 01, 2019
Jul. 13, 2018
Oct. 16, 2017
Dec. 30, 2018
Related Party Transaction [Line Items]        
Average repurchase price per share       $ 56.02
Jefferies [Member]        
Related Party Transaction [Line Items]        
Fees and reimbursements of expenses from related party   $ 3.0    
Jefferies [Member] | Minimum [Member]        
Related Party Transaction [Line Items]        
Percentage beneficially owns of common stock     10.00%  
Energizer [Member] | Subsequent Event [Member]        
Related Party Transaction [Line Items]        
Stock consideration, shares 5,300,000      
Energizer [Member] | Minimum [Member] | Subsequent Event [Member]        
Related Party Transaction [Line Items]        
Percentage beneficially owns of common stock 4.90%      
Chairman And Chief Executive Officer [Member]        
Related Party Transaction [Line Items]        
Shares of common stock repurchased from related parties       158,318
Value of repuchased common stock from related parties       $ 8.0