v3.25.4
Annual Total Returns
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Morgan Stanley Institutional Liquidity Funds - Administrative Class Portfolios | MSILF Money Market Portfolio | Administrative Class                    
Prospectus [Line Items]                    
Annual Return [Percent] none none none none none none none none none 0.24%
Morgan Stanley Institutional Liquidity Funds - Administrative Class Portfolios | MSILF Tax-Exempt Portfolio | Administrative Class                    
Prospectus [Line Items]                    
Annual Return [Percent] none none none none none none none none none 0.30%
Morgan Stanley Institutional Liquidity Funds - Advisory Class Portfolios | MSILF Money Market Portfolio | Advisory Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 4.11% 5.08% 4.86% 1.48% 0.04% 0.44% 2.10% 1.78% 0.89% 0.30%
Morgan Stanley Institutional Liquidity Funds - Advisory Class Portfolios | MSILF Tax-Exempt Portfolio | Advisory Class                    
Prospectus [Line Items]                    
Annual Return [Percent] none none none none none none none none none 0.30%
Morgan Stanley Institutional Liquidity Funds - Cash Management Class Portfolios | MSILF Money Market Portfolio | Cash Management Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 4.21% 5.19% 5.02% 1.56% 0.03% 0.51% 2.20% 1.87% 0.99% 0.34%
Morgan Stanley Institutional Liquidity Funds - Cash Management Class Portfolios | MSILF Tax-Exempt Portfolio | Cash Management Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 2.47% 3.08% 3.00% 0.87% none 0.36% 1.19% 1.12% 0.51% 0.35%
Morgan Stanley Institutional Liquidity Funds - Investor Class Portfolios | MSILF Money Market Portfolio | Investor Class                    
Prospectus [Line Items]                    
Annual Return [Percent] none none none none none none none none none 0.28%
Morgan Stanley Institutional Liquidity Funds - Investor Class Portfolios | MSILF Tax-Exempt Portfolio | Investor Class                    
Prospectus [Line Items]                    
Annual Return [Percent] none none none none none none none none none 0.33%
Morgan Stanley Institutional Liquidity Funds - Participant Class Portfolios | MSILF Money Market Portfolio | Participant Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 3.84% 4.82% 4.64% 1.32% 0.03% 0.32% 1.84% 1.53% 0.63% 0.06%
Morgan Stanley Institutional Liquidity Funds - Participant Class Portfolios | MSILF Tax-Exempt Portfolio | Participant Class                    
Prospectus [Line Items]                    
Annual Return [Percent] none none none none none none none none none 0.23%
Morgan Stanley Institutional Liquidity Funds - Select Class Portfolios | MSILF Money Market Portfolio | Select Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 3.54% 4.51%                
Morgan Stanley Institutional Liquidity Funds - Select Class Portfolios | MSILF Tax-Exempt Portfolio | Select Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 1.81%                  
Morgan Stanley Institutional Liquidity Funds - Wealth Class Portfolios | MSILF Money Market Portfolio | Wealth Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 4.37% 5.35% 5.14% 1.68% 0.05% 0.65% 2.34% 2.03% 1.14% 0.52%
Morgan Stanley Institutional Liquidity Funds - Wealth Class Portfolios | MSILF Tax-Exempt Portfolio | Wealth Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 2.63% 3.24% 3.16% 0.99% none 0.44% 1.35% 1.26% 0.66% 0.47%
Morgan Stanley Institutional Liquidity Funds - Wealth S Class Portfolios | MSILF Money Market Portfolio | Wealth S Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 4.31% 5.29% 5.11% 1.65% 0.03% 0.59% 2.30% 1.98% 1.08% 0.45%
Morgan Stanley Institutional Liquidity Funds - Wealth S Class Portfolios | MSILF Tax-Exempt Portfolio | Wealth S Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 2.58% 3.19% 3.10% 0.95% none 0.40% 1.30% 1.21% 0.60% 0.43%
Morgan Stanley Institutional Liquidity Funds - Impact Partner Class Portfolios | MSILF Money Market Portfolio | Impact Partner Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 4.37%                  
Morgan Stanley Institutional Liquidity Funds - Advisor Class Portfolios | MSILF Money Market Portfolio | Advisor Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 4.37%                  
Morgan Stanley Institutional Liquidity Funds - Advisor Class Portfolios | MSILF Tax-Exempt Portfolio | Advisor Class                    
Prospectus [Line Items]                    
Annual Return [Percent] 2.63%