MSILF Money Market Portfolio MSILF Money Market Portfolio MSILF Tax-Exempt Portfolio MSILF Tax-Exempt Portfolio Dmsilfretailmoneymarketportfolioadminclassportfolioscpspfebruary_17150 Morgan Stanley Institutional Liquidity Funds - Administrative Class Portfolios Dmsilfretailmoneymarketportfolioadvisoryclassportfolioscpspfebruary_17154 Morgan Stanley Institutional Liquidity Funds - Advisory Class Portfolios Dmsilfretailmoneymarketportfoliocashmanagementclassportfolioscpspfebruary_17158 Morgan Stanley Institutional Liquidity Funds - Cash Management Class Portfolios Dmsilfretailmoneymarketportfolioinvestorclassportfolioscpspfebruary_17164 Morgan Stanley Institutional Liquidity Funds - Investor Class Portfolios Dmsilfretailmoneymarketportfolioparticipantclassportfolioscpspfebruary_17146 Morgan Stanley Institutional Liquidity Funds - Participant Class Portfolios Dmsilfretailmoneymarketportfolioselectclassportfolioscpspfebruary_17168 Morgan Stanley Institutional Liquidity Funds - Select Class Portfolios Dmsilfretailmoneymarketportfoliowealthclassportfolioscpspfebruary_17139 Morgan Stanley Institutional Liquidity Funds - Wealth Class Portfolios Dmsilfretailmoneymarketportfoliowealthsclassportfolioscpspfebruary_17172 Morgan Stanley Institutional Liquidity Funds - Wealth S Class Portfolios Dmsilfretailmoneymarketportfolioimpactpartnerclassportfolioscpspfebruary_17162 Morgan Stanley Institutional Liquidity Funds - Impact Partner Class Portfolios Dmsilfretailadvisorclassprospectuscfebruary_17143 Morgan Stanley Institutional Liquidity Funds - Advisor Class Portfolios Dmsilfretailclasssaibjuly_17018 MSILF Retail Class SAI 485B_July 2025 Class Administrative - C000011666 Administrative Class Class Advisory - C000011667 Advisory Class Class Wealth - C000011668 Wealth Class Class Investor - C000011669 Investor Class Class Participant - C000011670 Participant Class Class Wealth S - C000011671 Wealth S Class Class Cash Management - C000017909 Cash Management Class Class CastleOak - C000227506 CastleOak Class Class Select - C000240958 Select Class Impact Partner Class - C000248681 Impact Partner Class Class Advisor - C000248992 Advisor Class Class Administrative - C000011678 Administrative Class Class Advisory - C000011679 Advisory Class Class Institutional - C000011680 Institutional Class Class Investor - C000011681 Investor Class Class Participant - C000011682 Participant Class Class Institutional Select - C000011683 Institutional Select Class Class Cash Management - C000017911 Cash Management Class Class Wealth - C000248682 Wealth Class Class Select - C000248683 Select Class Wealth S Class - C000248684 Wealth S Class Class Advisor - C000248993 Advisor Class Bank Obligations Bank Obligations [Member] Commercial Paper Commercial Paper [Member] U.S. Government Securities U.S. Government Securities [Member] Asset-Backed Securities Asset-Backed Securities [Member] Repurchase Agreements Repurchase Agreements [Member] Foreign Securities Foreign Securities [Member] Credit and Interest Rate Risk Credit and Interest Rate Risk [Member] Fixed-Income Securities Fixed-Income Securities [Member] Municipal Obligations Municipal Obligations [Member] Tax-Exempt Variable Rate Demand Notes Tax-Exempt Variable Rate Demand Notes [Member] Market and Geopolitical Risk Market and Geopolitical Risk [Member] Large Transactions Risk Large Transactions Risk [Member] Stable NAV Risk Stable NAV Risk [Member] Active Management Risk Active Management Risk [Member] Discretionary Liquidity Fee Risk Discretionary Liquidity Fee Risk [Member]