Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

DEUTSCHE DWS MUNICIPAL TRUST

Prospectus Date

rr_ProspectusDate

Feb. 01, 2018

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

SUPPLEMENT TO THE CURRENTLY EFFECTIVE PROSPECTUS

DWS Short-Term Municipal Bond Fund

Class A

The following changes are effective on or about February 11, 2019:

Effective on or about February 11, 2019, the front-end sales charge on Class A shares is eliminated on new fund share purchases and all disclosure and references in the fund's prospectus to a front-end sales charge of 2.00% and related sales charge discounts for Class A shares are hereby deleted.

DWS Short-Term Municipal Bond Fund

Risk/Return:

rr_RiskReturnAbstract

Supplement to Prospectus [Text Block]

rr_SupplementToProspectusTextBlock

SUPPLEMENT TO THE CURRENTLY EFFECTIVE PROSPECTUS

DWS Short-Term Municipal Bond Fund

Class A

The following changes are effective on or about February 11, 2019:

Effective on or about February 11, 2019, the front-end sales charge on Class A shares is eliminated on new fund share purchases and all disclosure and references in the fund's prospectus to a front-end sales charge of 2.00% and related sales charge discounts for Class A shares are hereby deleted.