    <SEC-DOCUMENT>0000785786-20-000032-index.html : 20200430
    <SEC-HEADER>0000785786-20-000032.hdr.sgml : 20200430
    <ACCEPTANCE-DATETIME>20200430163137
    ACCESSION NUMBER:		0000785786-20-000032
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		17
    CONFORMED PERIOD OF REPORT:	20200429
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20200430
    DATE AS OF CHANGE:		20200430

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			PLEXUS CORP
    		CENTRAL INDEX KEY:			0000785786
    		STANDARD INDUSTRIAL CLASSIFICATION:	PRINTED CIRCUIT BOARDS [3672]
    		IRS NUMBER:				391344447
    		STATE OF INCORPORATION:			WI
    		FISCAL YEAR END:			0928

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-14423
    		FILM NUMBER:		20836149

    	BUSINESS ADDRESS:
    		STREET 1:		PLEXUS CORP
    		STREET 2:		ONE PLEXUS WAY
    		CITY:			NEENAH
    		STATE:			WI
    		ZIP:			54956
    		BUSINESS PHONE:		9209696000

    	MAIL ADDRESS:
    		STREET 1:		PLEXUS CORP
    		STREET 2:		ONE PLEXUS WAY
    		CITY:			NEENAH
    		STATE:			WI
    		ZIP:			54956
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>a8kcoverpagedebtupdate.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a8kcoverpagedebtupdate.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1
    <SEQUENCE>2
    <FILENAME>exhibit101amendmentno1.htm
    <DESCRIPTION>EXHIBIT 10.1
    <TEXT>
    Document 2 - file: exhibit101amendmentno1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-10.1 (A)
    <SEQUENCE>3
    <FILENAME>exhibit101exhibita-plx.htm
    <DESCRIPTION>EXHIBIT 10.1 EXHIBIT A
    <TEXT>
    Document 3 - file: exhibit101exhibita-plx.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>plxs-20200429.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: plxs-20200429.xsd

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.CAL
    <SEQUENCE>5
    <FILENAME>plxs-20200429_cal.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT
    <TEXT>
    Document 5 - file: plxs-20200429_cal.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.DEF
    <SEQUENCE>6
    <FILENAME>plxs-20200429_def.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: plxs-20200429_def.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.LAB
    <SEQUENCE>7
    <FILENAME>plxs-20200429_lab.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
    <TEXT>
    Document 7 - file: plxs-20200429_lab.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.PRE
    <SEQUENCE>8
    <FILENAME>plxs-20200429_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 8 - file: plxs-20200429_pre.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>plxslogo8ka07.gif
    <TEXT>
    Document 9 - file: plxslogo8ka07.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>10
    <FILENAME>0000785786-20-000032-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: 0000785786-20-000032-xbrl.zip

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>11
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 11 - file: report.css

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>13
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 13 - file: MetaLinks.json

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>14
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 14 - file: Financial_Report.xlsx

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>15
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 15 - file: FilingSummary.html

    Document 15 - RAW XML: FilingSummary.xml

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>16
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: R1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>17
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 17 - file: Show.js

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>18
    <FILENAME>a8kcoverpagedebtupdate_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 18 - file: a8kcoverpagedebtupdate_htm.html

    Document 18 - RAW XML: a8kcoverpagedebtupdate_htm.xml

    </DOCUMENT>
    </SEC-DOCUMENT>