Restructuring Plan - Accrued Expenses and Compensation (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Oct. 03, 2020	Oct. 03, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance		$ 0
Restructuring charges	$ 26,285	12,287
Cash paid		(7,696)
Restructuring reserve, ending balance	4,591	4,591
Employee Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance		0
Restructuring charges		8,955
Cash paid		(7,335)
Restructuring reserve, ending balance	1,620	1,620
Other Restructuring Costs
Restructuring Cost and Reserve [Line Items]
Restructuring reserve, beginning balance		0
Restructuring charges		3,332
Cash paid		(361)
Restructuring reserve, ending balance	$ 2,971	$ 2,971