    <SEC-DOCUMENT>0001193125-25-066239-index.html : 20250328
    <SEC-HEADER>0001193125-25-066239.hdr.sgml : 20250328
    <ACCEPTANCE-DATETIME>20250328072306
    ACCESSION NUMBER:		0001193125-25-066239
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20241231
    FILED AS OF DATE:		20250328
    DATE AS OF CHANGE:		20250328
    EFFECTIVENESS DATE:		20250328

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MARSH & MCLENNAN COMPANIES, INC.
    		CENTRAL INDEX KEY:			0000062709
    		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
    		ORGANIZATION NAME:           	02 Finance
    		EIN:				362668272
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-05998
    		FILM NUMBER:		25781472

    	BUSINESS ADDRESS:
    		STREET 1:		1166 AVENUE OF THE AMERICAS
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10036
    		BUSINESS PHONE:		2123455000

    	MAIL ADDRESS:
    		STREET 1:		1166 AVENUE OF THE AMERICAS
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10036

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MARSH & MCLENNAN COMPANIES INC
    		DATE OF NAME CHANGE:	19920703

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	MARLENNAN CORP
    		DATE OF NAME CHANGE:	19760505
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>d899549dars.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: d899549dars.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>