    <SEC-DOCUMENT>0000912593-21-000155-index.html : 20210621
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    <ACCEPTANCE-DATETIME>20210621165108
    ACCESSION NUMBER:		0000912593-21-000155
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		16
    CONFORMED PERIOD OF REPORT:	20210617
    ITEM INFORMATION:		Entry into a Material Definitive Agreement
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20210621
    DATE AS OF CHANGE:		20210621

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SUN COMMUNITIES INC
    		CENTRAL INDEX KEY:			0000912593
    		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
    		IRS NUMBER:				382730780
    		STATE OF INCORPORATION:			MD
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-12616
    		FILM NUMBER:		211031453

    	BUSINESS ADDRESS:
    		STREET 1:		27777 FRANKLIN ROAD
    		STREET 2:		SUITE 200
    		CITY:			SOUTHFIELD
    		STATE:			MI
    		ZIP:			48034
    		BUSINESS PHONE:		2482082500

    	MAIL ADDRESS:
    		STREET 1:		27777 FRANKLIN ROAD
    		STREET 2:		SUITE 200
    		CITY:			SOUTHFIELD
    		STATE:			MI
    		ZIP:			48034
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    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>sui-20210617.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: sui-20210617.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-1.1
    <SEQUENCE>2
    <FILENAME>edgarunderwritingagreement.htm
    <DESCRIPTION>EX-1.1 UNDERWRITING AGREEMENT
    <TEXT>
    Document 2 - file: edgarunderwritingagreement.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>suncommunitiesincprices6.htm
    <DESCRIPTION>EXHIBIT 99.1 - PRESS RELEASE
    <TEXT>
    Document 3 - file: suncommunitiesincprices6.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-101.SCH
    <SEQUENCE>4
    <FILENAME>sui-20210617.xsd
    <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
    <TEXT>
    Document 4 - file: sui-20210617.xsd

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    <FILENAME>sui-20210617_lab.xml
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    <TEXT>
    Document 5 - file: sui-20210617_lab.xml

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    <TYPE>EX-101.PRE
    <SEQUENCE>6
    <FILENAME>sui-20210617_pre.xml
    <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
    <TEXT>
    Document 6 - file: sui-20210617_pre.xml

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    <FILENAME>suncommunitiesincprices6001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 7 - file: suncommunitiesincprices6001.jpg

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    <SEQUENCE>8
    <FILENAME>suncommunitiesincprices6002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 8 - file: suncommunitiesincprices6002.jpg

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>9
    <FILENAME>sui-20210617_htm.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 9 - file: sui-20210617_htm.html

    Document 9 - RAW XML: sui-20210617_htm.xml

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    <SEQUENCE>10
    <FILENAME>R1.htm
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 10 - file: R1.htm

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    <DOCUMENT>
    <TYPE>EXCEL
    <SEQUENCE>11
    <FILENAME>Financial_Report.xlsx
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 11 - file: Financial_Report.xlsx

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>12
    <FILENAME>Show.js
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 12 - file: Show.js

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>13
    <FILENAME>report.css
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 13 - file: report.css

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    <DOCUMENT>
    <TYPE>XML
    <SEQUENCE>14
    <FILENAME>FilingSummary.xml
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 14 - file: FilingSummary.html

    Document 14 - RAW XML: FilingSummary.xml

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    <DOCUMENT>
    <TYPE>JSON
    <SEQUENCE>16
    <FILENAME>MetaLinks.json
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
    Document 16 - file: MetaLinks.json

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    <DOCUMENT>
    <TYPE>ZIP
    <SEQUENCE>17
    <FILENAME>0000912593-21-000155-xbrl.zip
    <DESCRIPTION>IDEA: XBRL DOCUMENT
    <TEXT>
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