Reportable Segments, Geographic Information and Major Customers - Concentration of Risk (Details)	12 Months Ended
Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Customer Concentration Risk \| Consolidated Net Sales \| General Electric Company (GE)
Segment Reporting Information [Line Items]
Percentage of concentration risk	12.40%	12.30%	12.20%

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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