<SEC-DOCUMENT>0000776867-20-000041-index.html : 20201215
<SEC-HEADER>0000776867-20-000041.hdr.sgml : 20201215
<ACCEPTANCE-DATETIME>20201215083021
ACCESSION NUMBER:		0000776867-20-000041
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		80
CONFORMED PERIOD OF REPORT:	20201214
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20201215
DATE AS OF CHANGE:		20201215

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WHITE MOUNTAINS INSURANCE GROUP LTD
		CENTRAL INDEX KEY:			0000776867
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				942708455
		STATE OF INCORPORATION:			D0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08993
		FILM NUMBER:		201388257

	BUSINESS ADDRESS:	
		STREET 1:		23 SOUTH MAIN STREET
		STREET 2:		SUITE 3B
		CITY:			HANOVER
		STATE:			NH
		ZIP:			03755
		BUSINESS PHONE:		603 640 2200

	MAIL ADDRESS:	
		STREET 1:		23 SOUTH MAIN STREET
		STREET 2:		SUITE 3B
		CITY:			HANOVER
		STATE:			NH
		ZIP:			03755

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	WHITE MOUNTAINS INSURANCE GROUP INC
		DATE OF NAME CHANGE:	19990603

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FUND AMERICAN ENTERPRISES HOLDINGS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FUND AMERICAN COMPANIES INC
		DATE OF NAME CHANGE:	19920701
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>wtm-20201214.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: wtm-20201214.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-2.1 <SEQUENCE>2 <FILENAME>wtmex21-amendedagreement.htm <DESCRIPTION>EX-2.1 <TEXT> Document 2 - file: wtmex21-amendedagreement.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>3 <FILENAME>wtm-20201214.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT <TEXT> Document 3 - file: wtm-20201214.xsd
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</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>5 <FILENAME>wtm-20201214_def.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT <TEXT> Document 5 - file: wtm-20201214_def.xml
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>36 <FILENAME>wtmex21-amendedagreement029.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 36 - file: wtmex21-amendedagreement029.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>40 <FILENAME>wtmex21-amendedagreement033.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 40 - file: wtmex21-amendedagreement033.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>42 <FILENAME>wtmex21-amendedagreement035.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 42 - file: wtmex21-amendedagreement035.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>46 <FILENAME>wtmex21-amendedagreement039.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 46 - file: wtmex21-amendedagreement039.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>58 <FILENAME>wtmex21-amendedagreement051.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 58 - file: wtmex21-amendedagreement051.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>59 <FILENAME>wtmex21-amendedagreement052.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 59 - file: wtmex21-amendedagreement052.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>60 <FILENAME>wtmex21-amendedagreement053.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 60 - file: wtmex21-amendedagreement053.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>61 <FILENAME>wtmex21-amendedagreement054.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 61 - file: wtmex21-amendedagreement054.jpg
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