This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Stablecoin Reserves Portfolio for the period of April 16, 2026 (commencement of operations) to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

www.morganstanley.com/im/institutional-liquidity

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment^{Footnote Reference1}	Costs paid as a percentage of a $10,000 investment
Institutional Class	$1	0.20%^{Footnote Reference2}

Footnote	Description
Footnote¹	The expenses shown in this table are for less than a full reporting period. The expenses paid over a full reporting period would be higher.
Footnote²	Annualized

Expenses Paid, Amount

$ 1

Expense Ratio, Percent

0.20%

^[1]

AssetsNet

$ 500,001

Holdings Count | Holding

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$500,001
# of Portfolio Holdings	8

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
91-120 Days	4.0%
31-60 Days	5.0%
1-30 Days	91.0%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	29.3%
Repurchase Agreements	70.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

www.morganstanley.com/im/institutional-liquidity

C000011654

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Administrative Class

Trading Symbol

MGOXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

<span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: preserve-breaks;">www.morganstanley.com/im/institutional-liquidity</span>

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Administrative Class	$15	0.30%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 15

Expense Ratio, Percent

0.30%

^[2]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248991

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Advisor Class

Trading Symbol

MALXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$8	0.15%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 8

Expense Ratio, Percent

0.15%

^[3]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011655

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Advisory Class

Trading Symbol

MAYXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisory Class	$20	0.40%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 20

Expense Ratio, Percent

0.40%

^[4]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000017907

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Cash Management Class

Trading Symbol

MSGXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Cash Management Class	$15	0.30%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 15

Expense Ratio, Percent

0.30%

^[5]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000227505

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

CastleOak Shares Class

Trading Symbol

COSXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
CastleOak Shares Class	$8	0.15%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 8

Expense Ratio, Percent

0.15%

^[6]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000234745

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Impact Class

Trading Symbol

IMPXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Impact Class	$8	0.15%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 8

Expense Ratio, Percent

0.15%

^[7]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248673

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Impact Partner Class

Trading Symbol

IPGXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Impact Partner Class	$8	0.15%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 8

Expense Ratio, Percent

0.15%

^[8]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011656

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Institutional Class

Trading Symbol

MVRXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$8	0.15%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 8

Expense Ratio, Percent

0.15%

^[9]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000263898

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Institutional Plus Class

Trading Symbol

MPXXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 (commencement of operations) to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Plus Class	$9	0.17%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 9

Expense Ratio, Percent

0.17%

^[10]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011659

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Institutional Select Class

Trading Symbol

MGSXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Select Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[11]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011657

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Investor Class

Trading Symbol

MVVXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$13	0.25%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.25%

^[12]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011658

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Participant Class

Trading Symbol

MPCXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Participant Class	$32	0.65%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.65%

^[13]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000167931

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Portfolio

Class Name

Select Class

Trading Symbol

MSDXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Select Class	$47	0.95%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

0.95%

^[14]

AssetsNet

$ 221,539,446,601

Holdings Count | Holding

342

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$221,539,446,601
# of Portfolio Holdings	342

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	30.2%
91-120 Days	6.1%
61-90 Days	4.2%
31-60 Days	4.1%
1-30 Days	55.4%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	20.8%
U.S. Treasury Securities	24.0%
Repurchase Agreements	55.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011660

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio

Class Name

Administrative Class

Trading Symbol

MGAXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Administrative Class	$18	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 18

Expense Ratio, Percent

0.35%

^[15]

AssetsNet

$ 5,111,385,829

Holdings Count | Holding

189

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$5,111,385,829
# of Portfolio Holdings	189

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	20.3%
91-120 Days	9.7%
61-90 Days	2.8%
31-60 Days	19.5%
1-30 Days	47.7%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	25.3%
U.S. Treasury Securities	74.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011661

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio

Class Name

Advisory Class

Trading Symbol

MVAXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisory Class	$23	0.45%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 23

Expense Ratio, Percent

0.45%

^[16]

AssetsNet

$ 5,111,385,829

Holdings Count | Holding

189

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$5,111,385,829
# of Portfolio Holdings	189

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	20.3%
91-120 Days	9.7%
61-90 Days	2.8%
31-60 Days	19.5%
1-30 Days	47.7%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	25.3%
U.S. Treasury Securities	74.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000017908

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio

Class Name

Cash Management Class

Trading Symbol

MCHXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Cash Management Class	$18	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 18

Expense Ratio, Percent

0.35%

^[17]

AssetsNet

$ 5,111,385,829

Holdings Count | Holding

189

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$5,111,385,829
# of Portfolio Holdings	189

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	20.3%
91-120 Days	9.7%
61-90 Days	2.8%
31-60 Days	19.5%
1-30 Days	47.7%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	25.3%
U.S. Treasury Securities	74.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011662

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio

Class Name

Institutional Class

Trading Symbol

MUIXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[18]

AssetsNet

$ 5,111,385,829

Holdings Count | Holding

189

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$5,111,385,829
# of Portfolio Holdings	189

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	20.3%
91-120 Days	9.7%
61-90 Days	2.8%
31-60 Days	19.5%
1-30 Days	47.7%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	25.3%
U.S. Treasury Securities	74.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011665

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio

Class Name

Institutional Select Class

Trading Symbol

MSVXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Select Class	$13	0.25%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.25%

^[19]

AssetsNet

$ 5,111,385,829

Holdings Count | Holding

189

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$5,111,385,829
# of Portfolio Holdings	189

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	20.3%
91-120 Days	9.7%
61-90 Days	2.8%
31-60 Days	19.5%
1-30 Days	47.7%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	25.3%
U.S. Treasury Securities	74.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011663

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio

Class Name

Investor Class

Trading Symbol

MVIXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$15	0.30%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 15

Expense Ratio, Percent

0.30%

^[20]

AssetsNet

$ 5,111,385,829

Holdings Count | Holding

189

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$5,111,385,829
# of Portfolio Holdings	189

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	20.3%
91-120 Days	9.7%
61-90 Days	2.8%
31-60 Days	19.5%
1-30 Days	47.7%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	25.3%
U.S. Treasury Securities	74.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011664

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Government Securities Portfolio

Class Name

Participant Class

Trading Symbol

MGPXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Participant Class	$23	0.45%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 23

Expense Ratio, Percent

0.45%

^[21]

AssetsNet

$ 5,111,385,829

Holdings Count | Holding

189

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$5,111,385,829
# of Portfolio Holdings	189

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	20.3%
91-120 Days	9.7%
61-90 Days	2.8%
31-60 Days	19.5%
1-30 Days	47.7%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Agency Securities	25.3%
U.S. Treasury Securities	74.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248992

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Advisor Class

Trading Symbol

MAPXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$9	0.18%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 9

Expense Ratio, Percent

0.18%

^[22]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011667

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Advisory Class

Trading Symbol

MBDXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisory Class	$22	0.43%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 22

Expense Ratio, Percent

0.43%

^[23]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000017909

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Cash Management Class

Trading Symbol

MLKXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Cash Management Class	$17	0.33%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 17

Expense Ratio, Percent

0.33%

^[24]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248681

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Impact Partner Class

Trading Symbol

IPFXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Impact Partner Class	$9	0.18%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 9

Expense Ratio, Percent

0.18%

^[25]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011670

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Participant Class

Trading Symbol

MEPXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Participant Class	$34	0.68%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 34

Expense Ratio, Percent

0.68%

^[26]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000240958

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Select Class

Trading Symbol

MSKXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Select Class	$49	0.98%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 49

Expense Ratio, Percent

0.98%

^[27]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011668

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Wealth Class

Trading Symbol

MWMXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Wealth Class	$9	0.18%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 9

Expense Ratio, Percent

0.18%

^[28]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011671

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio

Class Name

Wealth S Class

Trading Symbol

MWSXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Money Market Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Wealth S Class	$12	0.23%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 12

Expense Ratio, Percent

0.23%

^[29]

AssetsNet

$ 3,619,630,647

Holdings Count | Holding

138

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$3,619,630,647
# of Portfolio Holdings	138

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	23.7%
91-120 Days	8.2%
61-90 Days	6.4%
31-60 Days	4.8%
1-30 Days	56.9%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Certificates of Deposit	5.4%
Corporate Bonds	6.3%
Floating Rate Notes	13.2%
Commercial Paper	16.9%
Repurchase Agreements	58.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011673

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Prime Portfolio

Class Name

Advisory Class

Trading Symbol

MAVXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Prime Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisory Class	$23	0.45%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 23

Expense Ratio, Percent

0.45%

^[30]

AssetsNet

$ 13,277,281,686

Holdings Count | Holding

158

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$13,277,281,686
# of Portfolio Holdings	158

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	27.5%
91-120 Days	5.6%
61-90 Days	7.5%
31-60 Days	2.9%
1-30 Days	56.5%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Corporate Bonds	3.4%
Certificates of Deposit	5.1%
Floating Rate Notes	15.8%
Commercial Paper	19.8%
Repurchase Agreements	55.9%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000017910

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Prime Portfolio

Class Name

Cash Management Class

Trading Symbol

MSPXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Prime Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Cash Management Class	$18	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 18

Expense Ratio, Percent

0.35%

^[31]

AssetsNet

$ 13,277,281,686

Holdings Count | Holding

158

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$13,277,281,686
# of Portfolio Holdings	158

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	27.5%
91-120 Days	5.6%
61-90 Days	7.5%
31-60 Days	2.9%
1-30 Days	56.5%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Corporate Bonds	3.4%
Certificates of Deposit	5.1%
Floating Rate Notes	15.8%
Commercial Paper	19.8%
Repurchase Agreements	55.9%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000238341

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Prime Portfolio

Class Name

CastleOak Shares Class

Trading Symbol

CASXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Prime Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
CastleOak Shares Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[32]

AssetsNet

$ 13,277,281,686

Holdings Count | Holding

158

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$13,277,281,686
# of Portfolio Holdings	158

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	27.5%
91-120 Days	5.6%
61-90 Days	7.5%
31-60 Days	2.9%
1-30 Days	56.5%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Corporate Bonds	3.4%
Certificates of Deposit	5.1%
Floating Rate Notes	15.8%
Commercial Paper	19.8%
Repurchase Agreements	55.9%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000234746

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Prime Portfolio

Class Name

Impact Class

Trading Symbol

IMTXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Prime Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Impact Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[33]

AssetsNet

$ 13,277,281,686

Holdings Count | Holding

158

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$13,277,281,686
# of Portfolio Holdings	158

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	27.5%
91-120 Days	5.6%
61-90 Days	7.5%
31-60 Days	2.9%
1-30 Days	56.5%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Corporate Bonds	3.4%
Certificates of Deposit	5.1%
Floating Rate Notes	15.8%
Commercial Paper	19.8%
Repurchase Agreements	55.9%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248674

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Prime Portfolio

Class Name

Impact Partner Class

Trading Symbol

IPYXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Prime Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Impact Partner Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[34]

AssetsNet

$ 13,277,281,686

Holdings Count | Holding

158

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$13,277,281,686
# of Portfolio Holdings	158

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	27.5%
91-120 Days	5.6%
61-90 Days	7.5%
31-60 Days	2.9%
1-30 Days	56.5%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Corporate Bonds	3.4%
Certificates of Deposit	5.1%
Floating Rate Notes	15.8%
Commercial Paper	19.8%
Repurchase Agreements	55.9%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011674

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Prime Portfolio

Class Name

Institutional Class

Trading Symbol

MPFXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Prime Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[35]

AssetsNet

$ 13,277,281,686

Holdings Count | Holding

158

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$13,277,281,686
# of Portfolio Holdings	158

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	27.5%
91-120 Days	5.6%
61-90 Days	7.5%
31-60 Days	2.9%
1-30 Days	56.5%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Corporate Bonds	3.4%
Certificates of Deposit	5.1%
Floating Rate Notes	15.8%
Commercial Paper	19.8%
Repurchase Agreements	55.9%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011677

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Prime Portfolio

Class Name

Institutional Select Class

Trading Symbol

MPEXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Prime Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Select Class	$13	0.25%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.25%

^[36]

AssetsNet

$ 13,277,281,686

Holdings Count | Holding

158

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$13,277,281,686
# of Portfolio Holdings	158

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	27.5%
91-120 Days	5.6%
61-90 Days	7.5%
31-60 Days	2.9%
1-30 Days	56.5%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Corporate Bonds	3.4%
Certificates of Deposit	5.1%
Floating Rate Notes	15.8%
Commercial Paper	19.8%
Repurchase Agreements	55.9%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248993

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio

Class Name

Advisor Class

Trading Symbol

MAXXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[37]

AssetsNet

$ 599,659,759

Holdings Count | Holding

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$599,659,759
# of Portfolio Holdings	93

Holdings [Text Block]

Summary by State (% of total Investments)

Table Summary
Value	Value
Other	32.9%
Colorado	4.0%
South Carolina	4.1%
North Carolina	4.2%
Utah	5.7%
Ohio	5.8%
Florida	5.9%
Indiana	6.4%
Massachusetts	7.4%
Texas	9.4%
New York	14.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Quarterly Variable Rate Bonds	0.9%
Semi-Annual Variable Rate Bond	1.1%
Closed-End Investment Companies	3.3%
Municipal Bonds & Notes	8.3%
Commercial Paper	11.7%
Daily Variable Rate Bonds	22.3%
Weekly Variable Rate Bonds	52.4%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000017911

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio

Class Name

Cash Management Class

Trading Symbol

TECXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Cash Management Class	$17	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 17

Expense Ratio, Percent

0.35%

^[38]

AssetsNet

$ 599,659,759

Holdings Count | Holding

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$599,659,759
# of Portfolio Holdings	93

Holdings [Text Block]

Summary by State (% of total Investments)

Table Summary
Value	Value
Other	32.9%
Colorado	4.0%
South Carolina	4.1%
North Carolina	4.2%
Utah	5.7%
Ohio	5.8%
Florida	5.9%
Indiana	6.4%
Massachusetts	7.4%
Texas	9.4%
New York	14.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Quarterly Variable Rate Bonds	0.9%
Semi-Annual Variable Rate Bond	1.1%
Closed-End Investment Companies	3.3%
Municipal Bonds & Notes	8.3%
Commercial Paper	11.7%
Daily Variable Rate Bonds	22.3%
Weekly Variable Rate Bonds	52.4%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248683

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio

Class Name

Select Class

Trading Symbol

TSXXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Select Class	$50	1.00%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 50

Expense Ratio, Percent

1.00%

^[39]

AssetsNet

$ 599,659,759

Holdings Count | Holding

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$599,659,759
# of Portfolio Holdings	93

Holdings [Text Block]

Summary by State (% of total Investments)

Table Summary
Value	Value
Other	32.9%
Colorado	4.0%
South Carolina	4.1%
North Carolina	4.2%
Utah	5.7%
Ohio	5.8%
Florida	5.9%
Indiana	6.4%
Massachusetts	7.4%
Texas	9.4%
New York	14.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Quarterly Variable Rate Bonds	0.9%
Semi-Annual Variable Rate Bond	1.1%
Closed-End Investment Companies	3.3%
Municipal Bonds & Notes	8.3%
Commercial Paper	11.7%
Daily Variable Rate Bonds	22.3%
Weekly Variable Rate Bonds	52.4%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248682

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio

Class Name

Wealth Class

Trading Symbol

TEWXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Wealth Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[40]

AssetsNet

$ 599,659,759

Holdings Count | Holding

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$599,659,759
# of Portfolio Holdings	93

Holdings [Text Block]

Summary by State (% of total Investments)

Table Summary
Value	Value
Other	32.9%
Colorado	4.0%
South Carolina	4.1%
North Carolina	4.2%
Utah	5.7%
Ohio	5.8%
Florida	5.9%
Indiana	6.4%
Massachusetts	7.4%
Texas	9.4%
New York	14.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Quarterly Variable Rate Bonds	0.9%
Semi-Annual Variable Rate Bond	1.1%
Closed-End Investment Companies	3.3%
Municipal Bonds & Notes	8.3%
Commercial Paper	11.7%
Daily Variable Rate Bonds	22.3%
Weekly Variable Rate Bonds	52.4%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248684

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio

Class Name

Wealth S Class

Trading Symbol

TWSXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Tax-Exempt Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/shareholderreports. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Wealth S Class	$12	0.25%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 12

Expense Ratio, Percent

0.25%

^[41]

AssetsNet

$ 599,659,759

Holdings Count | Holding

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$599,659,759
# of Portfolio Holdings	93

Holdings [Text Block]

Summary by State (% of total Investments)

Table Summary
Value	Value
Other	32.9%
Colorado	4.0%
South Carolina	4.1%
North Carolina	4.2%
Utah	5.7%
Ohio	5.8%
Florida	5.9%
Indiana	6.4%
Massachusetts	7.4%
Texas	9.4%
New York	14.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
Quarterly Variable Rate Bonds	0.9%
Semi-Annual Variable Rate Bond	1.1%
Closed-End Investment Companies	3.3%
Municipal Bonds & Notes	8.3%
Commercial Paper	11.7%
Daily Variable Rate Bonds	22.3%
Weekly Variable Rate Bonds	52.4%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011684

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Administrative Class

Trading Symbol

MTTXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Administrative Class	$18	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 18

Expense Ratio, Percent

0.35%

^[42]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248994

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Advisor Class

Trading Symbol

MATXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[43]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011685

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Advisory Class

Trading Symbol

MAOXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisory Class	$23	0.45%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 23

Expense Ratio, Percent

0.45%

^[44]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000017912

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Cash Management Class

Trading Symbol

MREXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Cash Management Class	$18	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 18

Expense Ratio, Percent

0.35%

^[45]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011686

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Institutional Class

Trading Symbol

MISXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[46]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000263899

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Institutional Plus Class

Trading Symbol

MRXXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 (commencement of operations) to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Plus Class	$11	0.22%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 11

Expense Ratio, Percent

0.22%

^[47]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011689

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Institutional Select Class

Trading Symbol

MTSXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Select Class	$13	0.25%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.25%

^[48]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011687

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Investor Class

Trading Symbol

MTNXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$15	0.30%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 15

Expense Ratio, Percent

0.30%

^[49]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011688

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Participant Class

Trading Symbol

MTCXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Participant Class	$35	0.70%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 35

Expense Ratio, Percent

0.70%

^[50]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000167932

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio

Class Name

Select Class

Trading Symbol

MSTXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Select Class	$50	1.00%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 50

Expense Ratio, Percent

1.00%

^[51]

AssetsNet

$ 34,168,353,524

Holdings Count | Holding

139

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$34,168,353,524
# of Portfolio Holdings	139

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	29.0%
91-120 Days	2.3%
61-90 Days	2.1%
31-60 Days	1.8%
1-30 Days	64.8%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	35.8%
Repurchase Agreements	64.2%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011690

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Administrative Class

Trading Symbol

MAMXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio for the period of November 1, 2025 to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Administrative Class	$18	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 18

Expense Ratio, Percent

0.35%

^[52]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000251131

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Advisor Class

Trading Symbol

MAZXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisor Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[53]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011691

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Advisory Class

Trading Symbol

MVYXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Advisory Class	$23	0.45%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 23

Expense Ratio, Percent

0.45%

^[54]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000017913

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Cash Management Class

Trading Symbol

MHSXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Cash Management Class	$18	0.35%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 18

Expense Ratio, Percent

0.35%

^[55]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000271635

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

DAP Class

Trading Symbol

MDPXX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio for the period of February 5, 2026 (commencement of operations) to April 30, 2026.

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last period?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment^{Footnote Reference1}	Costs paid as a percentage of a $10,000 investment
DAP Class	$5	0.20%^{Footnote Reference2}

Footnote	Description
Footnote¹	The expenses shown in this table are for less than a full reporting period. The expenses paid over a full reporting period would be higher.
Footnote²	Annualized

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.20%

^[56]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248675

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Impact Class

Trading Symbol

IMXXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Impact Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[57]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000248676

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Impact Partner Class

Trading Symbol

IPUXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Impact Partner Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[58]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011692

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Institutional Class

Trading Symbol

MSUXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Class	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[59]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000263900

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Institutional Plus Class

Trading Symbol

MSXXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Plus Class	$11	0.22%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 11

Expense Ratio, Percent

0.22%

^[60]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011695

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Institutional Select Class

Trading Symbol

MSSXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Select Class	$13	0.25%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.25%

^[61]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011693

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Investor Class

Trading Symbol

MNVXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Class	$15	0.30%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 15

Expense Ratio, Percent

0.30%

^[62]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011694

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Participant Class

Trading Symbol

MPRXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Participant Class	$35	0.70%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 35

Expense Ratio, Percent

0.70%

^[63]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000167933

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Liquidity Funds - Treasury Securities Portfolio

Class Name

Select Class

Trading Symbol

MSEXX

Annual or Semi-Annual Statement [Text Block]

Additional Information [Text Block]

You can find additional information about the Fund at www.morganstanley.com/im/institutional-liquidity. You can also request this information by contacting us at 1-888-378-1630.

Additional Information Phone Number

1-888-378-1630

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Select Class	$50	1.00%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 50

Expense Ratio, Percent

1.00%

^[64]

AssetsNet

$ 63,132,721,189

Holdings Count | Holding

126

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$63,132,721,189
# of Portfolio Holdings	126

Holdings [Text Block]

Maturity Schedule (% of total investments)

Table Summary
Value	Value
121+ Days	22.5%
91-120 Days	4.2%
61-90 Days	4.1%
31-60 Days	27.0%
1-30 Days	42.2%

Asset Allocation (% of total investments)

Table Summary
Value	Value
U.S. Treasury Securities	100.0%

Material Fund Change [Text Block]

Updated Prospectus Web Address

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