REVENUE RECOGNITION - Narrative (Details) - Sales Revenue, Net	3 Months Ended		9 Months Ended
	Jul. 02, 2021	Jun. 26, 2020	Jul. 02, 2021	Jun. 26, 2020
Product Concentration Risk | Value-added support services revenue, including material management and repair work revenue | Maximum
Disaggregation of Revenue [Line Items]
Percentage of sales revenue	3.00%	3.00%	3.00%	3.00%
Geographic Concentration Risk | Outside of United States | Maximum
Disaggregation of Revenue [Line Items]
Percentage of sales revenue	2.00%	2.00%	2.00%	2.00%
Point in Time | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of sales revenue	41.10%	51.40%	46.50%	50.40%
Over Time | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of sales revenue	58.90%	48.60%	53.50%	49.60%