    <SEC-DOCUMENT>0001133228-25-006854-index.html : 20250627
    <SEC-HEADER>0001133228-25-006854.hdr.sgml : 20250627
    <ACCEPTANCE-DATETIME>20250627140303
    ACCESSION NUMBER:		0001133228-25-006854
    CONFORMED SUBMISSION TYPE:	N-CSR
    PUBLIC DOCUMENT COUNT:		5
    CONFORMED PERIOD OF REPORT:	20250430
    FILED AS OF DATE:		20250627
    DATE AS OF CHANGE:		20250627
    EFFECTIVENESS DATE:		20250627

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			PUTNAM MUNICIPAL OPPORTUNITIES TRUST
    		CENTRAL INDEX KEY:			0000900422
    		ORGANIZATION NAME:
    		EIN:				043187549
    		STATE OF INCORPORATION:			MA
    		FISCAL YEAR END:			0430

    	FILING VALUES:
    		FORM TYPE:		N-CSR
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-07626
    		FILM NUMBER:		251084914

    	BUSINESS ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		6172921000

    	MAIL ADDRESS:
    		STREET 1:		100 FEDERAL STREET
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>N-CSR
    <SEQUENCE>1
    <FILENAME>pmot-efp16106_ncsr.htm
    <DESCRIPTION>PUTNAM MUNICIPAL OPPORTUNITIES TRUST - N-CSR
    <TEXT>
    Document 1 - file: pmot-efp16106_ncsr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CODE ETH
    <SEQUENCE>2
    <FILENAME>pmot-efp16106_ex99code.htm
    <DESCRIPTION>CODE OF ETHICS
    <TEXT>
    Document 2 - file: pmot-efp16106_ex99code.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.CERT
    <SEQUENCE>3
    <FILENAME>pmot-efp16106_ex99cert.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
    <TEXT>
    Document 3 - file: pmot-efp16106_ex99cert.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.906CERT
    <SEQUENCE>4
    <FILENAME>pmot-efp16106_ex99906.htm
    <DESCRIPTION>CERTIFICATIONS PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
    <TEXT>
    Document 4 - file: pmot-efp16106_ex99906.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.19C
    <SEQUENCE>5
    <FILENAME>pmot-efp16106_ex9919c.htm
    <DESCRIPTION>PURSUANT TO THE SECURITIES AND EXCHANGE COMMISSIONS ORDER GRANTING RELIEF FROM SECTION 19(B) OF THE INVESTMENT COMPANY ACT OF 1940
    <TEXT>
    Document 5 - file: pmot-efp16106_ex9919c.htm

    </DOCUMENT>
    </SEC-DOCUMENT>