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Revenue Recognition - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Sep. 30, 2020
Concentration Risk [Line Items]
Allowance for product returns	$ 24.1		$ 23.1
Customer Concentration Risk | Two Customers | Net Sales
Concentration Risk [Line Items]
Concentration risk percentage	23.60%
Customer Concentration Risk | One Customer | Net Sales
Concentration Risk [Line Items]
Concentration risk percentage		13.80%

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Allowance For Product Returns

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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