    <SEC-DOCUMENT>0001279569-25-000579-index.html : 20250605
    <SEC-HEADER>0001279569-25-000579.hdr.sgml : 20250605
    <ACCEPTANCE-DATETIME>20250604181053
    ACCESSION NUMBER:		0001279569-25-000579
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		4
    CONFORMED PERIOD OF REPORT:	20250604
    FILED AS OF DATE:		20250605
    DATE AS OF CHANGE:		20250604

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			SUN LIFE FINANCIAL INC
    		CENTRAL INDEX KEY:			0001097362
    		STANDARD INDUSTRIAL CLASSIFICATION:	LIFE INSURANCE [6311]
    		ORGANIZATION NAME:           	02 Finance
    		EIN:				000000000
    		STATE OF INCORPORATION:			Z4
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-15014
    		FILM NUMBER:		251024411

    	BUSINESS ADDRESS:
    		STREET 1:		SUN LIFE ASSURANCE CO OF CANADA
    		STREET 2:		ONE YORK STREET
    		CITY:			TORONTO
    		STATE:			A6
    		ZIP:			M5J 0B6
    		BUSINESS PHONE:		4169794800

    	MAIL ADDRESS:
    		STREET 1:		SUN LIFE ASSURANCE CO OF CANADA
    		STREET 2:		ONE YORK STREET
    		CITY:			TORONTO
    		STATE:			A6
    		ZIP:			M5J 0B6

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SUN LIFE FINANCIAL SERVICES INC
    		DATE OF NAME CHANGE:	20030702

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	SUN LIFE FINANCIAL SERVICES OF CANADA INC
    		DATE OF NAME CHANGE:	20000224
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>6-K
    <SEQUENCE>1
    <FILENAME>sunlife6k.htm
    <DESCRIPTION>FORM 6-K
    <TEXT>
    Document 1 - file: sunlife6k.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>2
    <FILENAME>ex991.htm
    <DESCRIPTION>NEWS RELEASE DATED JUNE 4, 2025
    <TEXT>
    Document 2 - file: ex991.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>ex991.pdf
    <DESCRIPTION>PDF VERSION OF NEWS RELEASE
    <TEXT>
    Document 3 - file: ex991.pdf

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>logo.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 4 - file: logo.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>