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Revenue Recognition - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 04, 2021
Mar. 29, 2020
Apr. 04, 2021
Mar. 29, 2020
Sep. 30, 2020
Concentration Risk [Line Items]          
Allowance for product returns $ 22.2   $ 22.2   $ 23.1
Customer Concentration Risk | Two Customers | Net Sales          
Concentration Risk [Line Items]          
Concentration risk percentage     23.30%    
Customer Concentration Risk | Three Customers | Net Sales          
Concentration Risk [Line Items]          
Concentration risk percentage 33.70% 37.20%   34.10%