Label	Element	Value
Prospectus:	rr_ProspectusTable
Document Type	dei_DocumentType	485BPOS
Document Period End Date	dei_DocumentPeriodEndDate	Sep. 30, 2021
Registrant Name	dei_EntityRegistrantName	Morgan Stanley Institutional Fund Trust
Central Index Key	dei_EntityCentralIndexKey	0000741375
Entity Inv Company Type	dei_EntityInvCompanyType	N-1A
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Jan. 28, 2022
Document Effective Date	dei_DocumentEffectiveDate	Jan. 28, 2022
Prospectus Date	rr_ProspectusDate	Jan. 28, 2022