Product Lines Contributing Sales (Detail)	12 Months Ended
Sep. 28, 2018	Sep. 29, 2017	Sep. 30, 2016
Connector
Product Information [Line Items]
Product Line Sales Total Percentage	17.00%	16.00%	16.00%
Avionics
Product Information [Line Items]
Product Line Sales Total Percentage	16.00%	16.00%	16.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration