Performance Management |
Oct. 31, 2025 |
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| Morgan Stanley Institutional Liquidity Funds - Administrative Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Administrative Class shares from year-to-year and by showing the average annual returns of the Fund’s Administrative Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Administrative Class shares from year-to-year and by showing the average annual returns of the Fund’s Administrative Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years* | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns*(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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[1] | ||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Administrative Class Portfolios | MSILF Money Market Portfolio | Administrative Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.08% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2016 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | 0.02% | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Dec. 31, 2016 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Administrative Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Administrative Class shares from year-to-year and by showing the average annual returns of the Fund’s Administrative Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Administrative Class shares from year-to-year and by showing the average annual returns of the Fund’s Administrative Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years* | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns*(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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[2] | ||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Administrative Class Portfolios | MSILF Tax-Exempt Portfolio | Administrative Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.23% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2016 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | none | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2016 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisory Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisory Class shares from year-to-year and by showing the average annual returns of the Fund’s Advisory Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisory Class shares from year-to-year and by showing the average annual returns of the Fund’s Advisory Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisory Class Portfolios | MSILF Money Market Portfolio | Advisory Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 1.31% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | (0.02%) | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2022 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisory Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisory Class shares from year-to-year and by showing the average annual returns of the Fund’s Advisory Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisory Class shares from year-to-year and by showing the average annual returns of the Fund’s Advisory Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years* | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns*(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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[3] | ||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisory Class Portfolios | MSILF Tax-Exempt Portfolio | Advisory Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.22% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2016 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | none | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2016 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Cash Management Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Cash Management Class shares from year-to-year and by showing the average annual returns of the Fund’s Cash Management Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Cash Management Class shares from year-to-year and by showing the average annual returns of the Fund’s Cash Management Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Cash Management Class Portfolios | MSILF Money Market Portfolio | Cash Management Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 1.34% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | (0.01%) | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2022 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Cash Management Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Cash Management Class shares from year-to-year and by showing the average annual returns of the Fund’s Cash Management Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Cash Management Class shares from year-to-year and by showing the average annual returns of the Fund’s Cash Management Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Cash Management Class Portfolios | MSILF Tax-Exempt Portfolio | Cash Management Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.85% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | (0.01%) | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2022 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Investor Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Investor Class shares from year-to-year and by showing the average annual returns of the Fund’s Investor Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Investor Class shares from year-to-year and by showing the average annual returns of the Fund’s Investor Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years* | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns*(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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[4] | ||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Investor Class Portfolios | MSILF Money Market Portfolio | Investor Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.09% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2016 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | 0.02% | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Dec. 31, 2016 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Investor Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Investor Class shares from year-to-year and by showing the average annual returns of the Fund’s Investor Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Investor Class shares from year-to-year and by showing the average annual returns of the Fund’s Investor Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years* | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns*(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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[5] | ||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Investor Class Portfolios | MSILF Tax-Exempt Portfolio | Investor Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.24% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2016 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | none | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2016 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Participant Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Participant Class shares from year-to-year and by showing the average annual returns of the Fund’s Participant Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Participant Class shares from year-to-year and by showing the average annual returns of the Fund’s Participant Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Participant Class Portfolios | MSILF Money Market Portfolio | Participant Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 1.25% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | (0.01%) | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Sep. 30, 2020 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Participant Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Participant Class shares from year-to-year and by showing the average annual returns of the Fund’s Participant Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Participant Class shares from year-to-year and by showing the average annual returns of the Fund’s Participant Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years* | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns*(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
[6] | ||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Participant Class Portfolios | MSILF Tax-Exempt Portfolio | Participant Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.22% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2016 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | none | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2016 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Select Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Select Class shares from year-to-year and by showing the average annual returns of the Fund’s Select Class shares for the one year and since inception periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Select Class shares from year-to-year and by showing the average annual returns of the Fund’s Select Class shares for the one year and since inception periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
|
|||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
|||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Select Class Portfolios | MSILF Money Market Portfolio | Select Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 1.15% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Mar. 31, 2024 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | 0.81% | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Dec. 31, 2025 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Select Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Select Class shares for one year and by showing the average annual returns of the Fund’s Select Class shares for the one year period and since inception. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Select Class shares for one year and by showing the average annual returns of the Fund’s Select Class shares for the one year period and since inception. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
|
|||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
|||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Select Class Portfolios | MSILF Tax-Exempt Portfolio | Select Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.50% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2025 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | 0.42% | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Sep. 30, 2025 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
|||||||||||||||||||||||||
| Bar Chart Closing [Text Block] |
|
|||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
|||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth Class Portfolios | MSILF Money Market Portfolio | Wealth Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 1.38% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | (0.01%) | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2022 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
|||||||||||||||||||||||||
| Bar Chart Closing [Text Block] |
|
|||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
|||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth Class Portfolios | MSILF Tax-Exempt Portfolio | Wealth Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.88% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | (0.01%) | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2021 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth S Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth S Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth S Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth S Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth S Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
|||||||||||||||||||||||||
| Bar Chart Closing [Text Block] |
|
|||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
|||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth S Class Portfolios | MSILF Money Market Portfolio | Wealth S Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 1.36% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | none | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2022 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth S Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth S Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth S Class shares for the one, five and 10 year periods. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Wealth S Class shares from year-to-year and by showing the average annual returns of the Fund’s Wealth S Class shares for the one, five and 10 year periods. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
|||||||||||||||||||||||||
| Bar Chart Closing [Text Block] |
|
|||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
|||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Wealth S Class Portfolios | MSILF Tax-Exempt Portfolio | Wealth S Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.86% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | (0.01%) | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2022 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Impact Partner Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The
bar chart and table below provide some indication of the risks of investing in the Fund by
showing changes in the performance of the Fund’s Impact Partner Class shares for one
year and by showing the average annual returns of the Fund’s Impact Partner Class shares
for the one year period and since inception. The
Fund’s past performance is not necessarily an indication of how the Fund will perform
in the future. Updated
performance information is available online at www.morganstanley.com/liquidity.
|
|||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Impact Partner Class shares for one year and by showing the average annual returns of the Fund’s Impact Partner Class shares for the one year period and since inception. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
|||||||||||||||||||||||||
| Bar Chart Closing [Text Block] |
|
|||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
|
|||||||||||||||||||||||||
| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
|
|||||||||||||||||||||||||
| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Impact Partner Class Portfolios | MSILF Money Market Portfolio | Impact Partner Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 1.10% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Mar. 31, 2025 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | 1.01% | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Dec. 31, 2025 | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisor Class Portfolios | MSILF Money Market Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisor Class shares for one year and by showing the average annual returns of the Fund’s Advisor Class shares for the one year period and since inception. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
|
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisor Class shares for one year and by showing the average annual returns of the Fund’s Advisor Class shares for the one year period and since inception. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Performance [Table] |
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| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisor Class Portfolios | MSILF Money Market Portfolio | Advisor Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return | 1.10% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Mar. 31, 2025 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | 1.01% | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Dec. 31, 2025 | |||||||||||||||||||||||||
| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisor Class Portfolios | MSILF Tax-Exempt Portfolio | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | |||||||||||||||||||||||||
| Performance Narrative [Text Block] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisor Class shares for one year and by showing the average annual returns of the Fund’s Advisor Class shares for the one year period and since inception. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available online at www.morganstanley.com/liquidity.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the performance of the Fund’s Advisor Class shares for one year and by showing the average annual returns of the Fund’s Advisor Class shares for the one year period and since inception. | |||||||||||||||||||||||||
| Bar Chart [Heading] | Annual Total Returns—Calendar Years | |||||||||||||||||||||||||
| Bar Chart [Table] | ![]() |
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| Bar Chart Closing [Text Block] |
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| Performance Table Heading | Average Annual Total Returns(for the Periods Ended December 31, 2025) | |||||||||||||||||||||||||
| Performance [Table] |
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| Performance Table Closing [Text Block] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630.
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| Money Market Seven Day Yield, Caption [Optional Text] | You may obtain the Fund’s 7-day current yield by calling 1-888-378-1630. | |||||||||||||||||||||||||
| Money Market Seven Day Yield Phone | 1-888-378-1630 | |||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.morganstanley.com/liquidity | |||||||||||||||||||||||||
| Morgan Stanley Institutional Liquidity Funds - Advisor Class Portfolios | MSILF Tax-Exempt Portfolio | Advisor Class | ||||||||||||||||||||||||||
| Prospectus [Line Items] | ||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | High Quarter | |||||||||||||||||||||||||
| Highest Quarterly Return | 0.70% | |||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2025 | |||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Low Quarter | |||||||||||||||||||||||||
| Lowest Quarterly Return | 0.62% | |||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Sep. 30, 2025 | |||||||||||||||||||||||||
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