<SEC-DOCUMENT>0001564590-20-016226-index.html : 20200410
<SEC-HEADER>0001564590-20-016226.hdr.sgml : 20200410
<ACCEPTANCE-DATETIME>20200410142500
ACCESSION NUMBER:		0001564590-20-016226
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		16
CONFORMED PERIOD OF REPORT:	20200410
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200410
DATE AS OF CHANGE:		20200410

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HANOVER INSURANCE GROUP, INC.
		CENTRAL INDEX KEY:			0000944695
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				043263626
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13754
		FILM NUMBER:		20786612

	BUSINESS ADDRESS:	
		STREET 1:		440 LINCOLN ST
		CITY:			WORCESTER
		STATE:			MA
		ZIP:			01653
		BUSINESS PHONE:		5088551000

	MAIL ADDRESS:	
		STREET 1:		440 LINCOLN ST
		CITY:			WORCESTER
		STATE:			MA
		ZIP:			01653

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLMERICA FINANCIAL CORP
		DATE OF NAME CHANGE:	19950501
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>thg-8k_20200410.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: thg-8k_20200410.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>thg-ex991_6.htm <DESCRIPTION>EX-99.1 <TEXT> Document 2 - file: thg-ex991_6.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>gx5ov0qfzrhi000002.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: gx5ov0qfzrhi000002.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>gx5ov0qfzrhi000001.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: gx5ov0qfzrhi000001.jpg
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>5 <FILENAME>thg-20200410.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA <TEXT> Document 5 - file: thg-20200410.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>6 <FILENAME>thg-20200410_def.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE <TEXT> Document 6 - file: thg-20200410_def.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>7 <FILENAME>thg-20200410_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE <TEXT> Document 7 - file: thg-20200410_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>8 <FILENAME>thg-20200410_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE <TEXT> Document 8 - file: thg-20200410_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>9 <FILENAME>0001564590-20-016226-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 9 - file: 0001564590-20-016226-xbrl.zip
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>11 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 11 - file: Financial_Report.xlsx
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>12 <FILENAME>thg-8k_20200410_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 12 - file: thg-8k_20200410_htm.html
Document 12 - RAW XML: thg-8k_20200410_htm.xml
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>13 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 13 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>14 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 14 - file: FilingSummary.html
Document 14 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>15 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 15 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>16 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 16 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>17 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 17 - file: Show.js
</DOCUMENT> </SEC-DOCUMENT>