This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Corporate Bond Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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/shareholderreports</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
Class A	$47	0.94%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

0.94%

^[1]

AssetsNet

$ 154,502,782

Holdings Count | Holding

300

InvestmentCompanyPortfolioTurnover

70.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$154,502,782
# of Portfolio Holdings	300
Portfolio Turnover Rate	70%

Holdings [Text Block]

Credit Quality (% of net assets)^{Footnote Referencea}

Table Summary
Value	Value
Cash and Equivalents	0.0%^{Footnote Reference†}
B	1.0%
BB	2.7%
BBB	53.3%
A	31.8%
AA	10.8%
AAA	0.4%

Footnote	Description
Footnote^†	Amount is less than 0.05%
Footnote^a	Security ratings disclosed is an aggregation of the highest security level rating amongst S&P Global Ratings, Moody's Investors Services, Inc., and Fitch Ratings, each a Nationally Recognized Statistical Ratings Organization.

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Preferred Stocks	0.2%
Short-Term Investments	2.1%
Corporate Bonds	97.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000155931

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Corporate Bond Portfolio

Class Name

Trading Symbol

MSBOX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Corporate Bond Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class C	$87	1.75%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 87

Expense Ratio, Percent

1.75%

^[2]

AssetsNet

$ 154,502,782

Holdings Count | Holding

300

InvestmentCompanyPortfolioTurnover

70.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$154,502,782
# of Portfolio Holdings	300
Portfolio Turnover Rate	70%

Holdings [Text Block]

Credit Quality (% of net assets)^{Footnote Referencea}

Table Summary
Value	Value
Cash and Equivalents	0.0%^{Footnote Reference†}
B	1.0%
BB	2.7%
BBB	53.3%
A	31.8%
AA	10.8%
AAA	0.4%

Footnote	Description
Footnote^†	Amount is less than 0.05%
Footnote^a	Security ratings disclosed is an aggregation of the highest security level rating amongst S&P Global Ratings, Moody's Investors Services, Inc., and Fitch Ratings, each a Nationally Recognized Statistical Ratings Organization.

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Preferred Stocks	0.2%
Short-Term Investments	2.1%
Corporate Bonds	97.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011549

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Corporate Bond Portfolio

Class Name

Trading Symbol

MPFDX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Corporate Bond Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class I	$32	0.65%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 32

Expense Ratio, Percent

0.65%

^[3]

AssetsNet

$ 154,502,782

Holdings Count | Holding

300

InvestmentCompanyPortfolioTurnover

70.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$154,502,782
# of Portfolio Holdings	300
Portfolio Turnover Rate	70%

Holdings [Text Block]

Credit Quality (% of net assets)^{Footnote Referencea}

Table Summary
Value	Value
Cash and Equivalents	0.0%^{Footnote Reference†}
B	1.0%
BB	2.7%
BBB	53.3%
A	31.8%
AA	10.8%
AAA	0.4%

Footnote	Description
Footnote^†	Amount is less than 0.05%
Footnote^a	Security ratings disclosed is an aggregation of the highest security level rating amongst S&P Global Ratings, Moody's Investors Services, Inc., and Fitch Ratings, each a Nationally Recognized Statistical Ratings Organization.

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Preferred Stocks	0.2%
Short-Term Investments	2.1%
Corporate Bonds	97.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000065127

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Corporate Bond Portfolio

Class Name

Trading Symbol

MGILX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Corporate Bond Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class L	$73	1.47%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 73

Expense Ratio, Percent

1.47%

^[4]

AssetsNet

$ 154,502,782

Holdings Count | Holding

300

InvestmentCompanyPortfolioTurnover

70.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$154,502,782
# of Portfolio Holdings	300
Portfolio Turnover Rate	70%

Holdings [Text Block]

Credit Quality (% of net assets)^{Footnote Referencea}

Table Summary
Value	Value
Cash and Equivalents	0.0%^{Footnote Reference†}
B	1.0%
BB	2.7%
BBB	53.3%
A	31.8%
AA	10.8%
AAA	0.4%

Footnote	Description
Footnote^†	Amount is less than 0.05%
Footnote^a	Security ratings disclosed is an aggregation of the highest security level rating amongst S&P Global Ratings, Moody's Investors Services, Inc., and Fitch Ratings, each a Nationally Recognized Statistical Ratings Organization.

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Preferred Stocks	0.2%
Short-Term Investments	2.1%
Corporate Bonds	97.7%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011562

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Discovery Portfolio

Class Name

Trading Symbol

MACGX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Discovery Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class A	$47	1.04%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 47

Expense Ratio, Percent

1.04%

^[5]

AssetsNet

$ 744,038,302

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

27.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$744,038,302
# of Portfolio Holdings	38
Portfolio Turnover Rate	27%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Consumer, Cyclical	1.3%
Consumer, Non-Cyclical	1.4%
Short-Term Investments	3.7%
Real Estate	4.9%
Communication Services	5.0%
Financials	10.1%
Industrials	12.6%
Health Care	20.9%
Information Technology	40.1%

Largest Holdings [Text Block]

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Table Summary
Cloudflare, Inc.	14.0%
Roivant Sciences Ltd.	9.8%
Royalty Pharma PLC	8.6%
QXO, Inc.	7.6%
Databricks, Inc.	7.2%
ROBLOX Corp.	4.6%
Aurora Innovation, Inc.	4.6%
Affirm Holdings, Inc.	4.5%
Opendoor Technologies, Inc.	3.5%
IonQ, Inc.	3.4%
Total	67.8%

Footnote	Description
Footnote^a	Excluding cash equivalents.

Updated Prospectus Web Address

C000155934

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Discovery Portfolio

Class Name

Trading Symbol

MSMFX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Discovery Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class C	$80	1.79%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 80

Expense Ratio, Percent

1.79%

^[6]

AssetsNet

$ 744,038,302

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

27.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$744,038,302
# of Portfolio Holdings	38
Portfolio Turnover Rate	27%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Consumer, Cyclical	1.3%
Consumer, Non-Cyclical	1.4%
Short-Term Investments	3.7%
Real Estate	4.9%
Communication Services	5.0%
Financials	10.1%
Industrials	12.6%
Health Care	20.9%
Information Technology	40.1%

Largest Holdings [Text Block]

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Table Summary
Cloudflare, Inc.	14.0%
Roivant Sciences Ltd.	9.8%
Royalty Pharma PLC	8.6%
QXO, Inc.	7.6%
Databricks, Inc.	7.2%
ROBLOX Corp.	4.6%
Aurora Innovation, Inc.	4.6%
Affirm Holdings, Inc.	4.5%
Opendoor Technologies, Inc.	3.5%
IonQ, Inc.	3.4%
Total	67.8%

Footnote	Description
Footnote^a	Excluding cash equivalents.

Updated Prospectus Web Address

C000011563

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Discovery Portfolio

Class Name

Trading Symbol

MPEGX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Discovery Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class I	$35	0.78%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 35

Expense Ratio, Percent

0.78%

^[7]

AssetsNet

$ 744,038,302

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

27.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$744,038,302
# of Portfolio Holdings	38
Portfolio Turnover Rate	27%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Consumer, Cyclical	1.3%
Consumer, Non-Cyclical	1.4%
Short-Term Investments	3.7%
Real Estate	4.9%
Communication Services	5.0%
Financials	10.1%
Industrials	12.6%
Health Care	20.9%
Information Technology	40.1%

Largest Holdings [Text Block]

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Table Summary
Cloudflare, Inc.	14.0%
Roivant Sciences Ltd.	9.8%
Royalty Pharma PLC	8.6%
QXO, Inc.	7.6%
Databricks, Inc.	7.2%
ROBLOX Corp.	4.6%
Aurora Innovation, Inc.	4.6%
Affirm Holdings, Inc.	4.5%
Opendoor Technologies, Inc.	3.5%
IonQ, Inc.	3.4%
Total	67.8%

Footnote	Description
Footnote^a	Excluding cash equivalents.

Updated Prospectus Web Address

C000113795

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Discovery Portfolio

Class Name

Trading Symbol

MSKLX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Discovery Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class L	$70	1.56%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 70

Expense Ratio, Percent

1.56%

^[8]

AssetsNet

$ 744,038,302

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

27.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$744,038,302
# of Portfolio Holdings	38
Portfolio Turnover Rate	27%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Consumer, Cyclical	1.3%
Consumer, Non-Cyclical	1.4%
Short-Term Investments	3.7%
Real Estate	4.9%
Communication Services	5.0%
Financials	10.1%
Industrials	12.6%
Health Care	20.9%
Information Technology	40.1%

Largest Holdings [Text Block]

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Table Summary
Cloudflare, Inc.	14.0%
Roivant Sciences Ltd.	9.8%
Royalty Pharma PLC	8.6%
QXO, Inc.	7.6%
Databricks, Inc.	7.2%
ROBLOX Corp.	4.6%
Aurora Innovation, Inc.	4.6%
Affirm Holdings, Inc.	4.5%
Opendoor Technologies, Inc.	3.5%
IonQ, Inc.	3.4%
Total	67.8%

Footnote	Description
Footnote^a	Excluding cash equivalents.

Updated Prospectus Web Address

C000129401

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Discovery Portfolio

Class Name

Trading Symbol

MMCGX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Discovery Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class R6	$29	0.64%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 29

Expense Ratio, Percent

0.64%

^[9]

AssetsNet

$ 744,038,302

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

27.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$744,038,302
# of Portfolio Holdings	38
Portfolio Turnover Rate	27%

Holdings [Text Block]

Sector Allocation (% of total investments)

Table Summary
Value	Value
Consumer, Cyclical	1.3%
Consumer, Non-Cyclical	1.4%
Short-Term Investments	3.7%
Real Estate	4.9%
Communication Services	5.0%
Financials	10.1%
Industrials	12.6%
Health Care	20.9%
Information Technology	40.1%

Largest Holdings [Text Block]

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Table Summary
Cloudflare, Inc.	14.0%
Roivant Sciences Ltd.	9.8%
Royalty Pharma PLC	8.6%
QXO, Inc.	7.6%
Databricks, Inc.	7.2%
ROBLOX Corp.	4.6%
Aurora Innovation, Inc.	4.6%
Affirm Holdings, Inc.	4.5%
Opendoor Technologies, Inc.	3.5%
IonQ, Inc.	3.4%
Total	67.8%

Footnote	Description
Footnote^a	Excluding cash equivalents.

Updated Prospectus Web Address

C000011555

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio

Class Name

Trading Symbol

MBAAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class A	$51	1.02%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 51

Expense Ratio, Percent

1.02%

^[10]

AssetsNet

$ 557,886,569

Holdings Count | Holding

1,457

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$557,886,569
# of Portfolio Holdings	1,457
Portfolio Turnover Rate	34%

Holdings [Text Block]

Geographic Allocation (% of total investments)

Table Summary
Value	Value
Africa	0.1%
Multi National	0.8%
Oceania	2.4%
South America	3.3%
Asia	9.1%
Europe	19.0%
North America	65.3%

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Warrants	0.0%^{Footnote Reference†}
Municipal Bonds	0.0%^{Footnote Reference†}
Rights	0.0%^{Footnote Reference†}
Commercial Mortgage-Backed Securities	0.7%
Asset-Backed Securities	0.8%
Supranational	0.9%
Mortgages - Other	1.4%
Agency Fixed Rate Mortgages	4.0%
Short-Term Investments	4.7%
Corporate Bonds	6.7%
U.S. Treasury Securities	9.2%
Sovereign	23.6%
Common Stocks	48.0%

Footnote	Description
Footnote^†	Amount is less than 0.05%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000155933

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio

Class Name

Trading Symbol

MSSOX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class C	$91	1.83%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 91

Expense Ratio, Percent

1.83%

^[11]

AssetsNet

$ 557,886,569

Holdings Count | Holding

1,457

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$557,886,569
# of Portfolio Holdings	1,457
Portfolio Turnover Rate	34%

Holdings [Text Block]

Geographic Allocation (% of total investments)

Table Summary
Value	Value
Africa	0.1%
Multi National	0.8%
Oceania	2.4%
South America	3.3%
Asia	9.1%
Europe	19.0%
North America	65.3%

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Warrants	0.0%^{Footnote Reference†}
Municipal Bonds	0.0%^{Footnote Reference†}
Rights	0.0%^{Footnote Reference†}
Commercial Mortgage-Backed Securities	0.7%
Asset-Backed Securities	0.8%
Supranational	0.9%
Mortgages - Other	1.4%
Agency Fixed Rate Mortgages	4.0%
Short-Term Investments	4.7%
Corporate Bonds	6.7%
U.S. Treasury Securities	9.2%
Sovereign	23.6%
Common Stocks	48.0%

Footnote	Description
Footnote^†	Amount is less than 0.05%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000011556

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio

Class Name

Trading Symbol

MPBAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class I	$36	0.73%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 36

Expense Ratio, Percent

0.73%

^[12]

AssetsNet

$ 557,886,569

Holdings Count | Holding

1,457

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$557,886,569
# of Portfolio Holdings	1,457
Portfolio Turnover Rate	34%

Holdings [Text Block]

Geographic Allocation (% of total investments)

Table Summary
Value	Value
Africa	0.1%
Multi National	0.8%
Oceania	2.4%
South America	3.3%
Asia	9.1%
Europe	19.0%
North America	65.3%

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Warrants	0.0%^{Footnote Reference†}
Municipal Bonds	0.0%^{Footnote Reference†}
Rights	0.0%^{Footnote Reference†}
Commercial Mortgage-Backed Securities	0.7%
Asset-Backed Securities	0.8%
Supranational	0.9%
Mortgages - Other	1.4%
Agency Fixed Rate Mortgages	4.0%
Short-Term Investments	4.7%
Corporate Bonds	6.7%
U.S. Treasury Securities	9.2%
Sovereign	23.6%
Common Stocks	48.0%

Footnote	Description
Footnote^†	Amount is less than 0.05%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000113792

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio

Class Name

Trading Symbol

MSDLX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class L	$76	1.53%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 76

Expense Ratio, Percent

1.53%

^[13]

AssetsNet

$ 557,886,569

Holdings Count | Holding

1,457

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$557,886,569
# of Portfolio Holdings	1,457
Portfolio Turnover Rate	34%

Holdings [Text Block]

Geographic Allocation (% of total investments)

Table Summary
Value	Value
Africa	0.1%
Multi National	0.8%
Oceania	2.4%
South America	3.3%
Asia	9.1%
Europe	19.0%
North America	65.3%

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Warrants	0.0%^{Footnote Reference†}
Municipal Bonds	0.0%^{Footnote Reference†}
Rights	0.0%^{Footnote Reference†}
Commercial Mortgage-Backed Securities	0.7%
Asset-Backed Securities	0.8%
Supranational	0.9%
Mortgages - Other	1.4%
Agency Fixed Rate Mortgages	4.0%
Short-Term Investments	4.7%
Corporate Bonds	6.7%
U.S. Treasury Securities	9.2%
Sovereign	23.6%
Common Stocks	48.0%

Footnote	Description
Footnote^†	Amount is less than 0.05%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000156275

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio

Class Name

Trading Symbol

MGPOX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Global Strategist Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class R6	$33	0.66%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 33

Expense Ratio, Percent

0.66%

^[14]

AssetsNet

$ 557,886,569

Holdings Count | Holding

1,457

InvestmentCompanyPortfolioTurnover

34.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$557,886,569
# of Portfolio Holdings	1,457
Portfolio Turnover Rate	34%

Holdings [Text Block]

Geographic Allocation (% of total investments)

Table Summary
Value	Value
Africa	0.1%
Multi National	0.8%
Oceania	2.4%
South America	3.3%
Asia	9.1%
Europe	19.0%
North America	65.3%

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Warrants	0.0%^{Footnote Reference†}
Municipal Bonds	0.0%^{Footnote Reference†}
Rights	0.0%^{Footnote Reference†}
Commercial Mortgage-Backed Securities	0.7%
Asset-Backed Securities	0.8%
Supranational	0.9%
Mortgages - Other	1.4%
Agency Fixed Rate Mortgages	4.0%
Short-Term Investments	4.7%
Corporate Bonds	6.7%
U.S. Treasury Securities	9.2%
Sovereign	23.6%
Common Stocks	48.0%

Footnote	Description
Footnote^†	Amount is less than 0.05%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000163600

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Ultra-Short Income Portfolio

Class Name

Class A

Trading Symbol

MUAIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Ultra-Short Income Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class A	$20	0.40%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 20

Expense Ratio, Percent

0.40%

^[15]

AssetsNet

$ 18,261,357,133

Holdings Count | Holding

219

InvestmentCompanyPortfolioTurnover

0.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$18,261,357,133
# of Portfolio Holdings	219
Portfolio Turnover Rate	0%

Holdings [Text Block]

Credit Quality (% of net assets)^{Footnote Referencea}

Table Summary
Value	Value
Cash and Equivalents	79.8%
BBB	1.6%
A	16.4%
AA	2.2%

Footnote	Description
Footnote^a	Security ratings disclosed is an aggregation of the highest security level rating amongst S&P Global Ratings, Moody's Investors Services, Inc., and Fitch Ratings, each a Nationally Recognized Statistical Ratings Organization.

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Sovereign	0.3%
Corporate Bonds	12.2%
Certificates of Deposit	14.8%
Commercial Paper	22.3%
Repurchase Agreements	22.6%
Floating Rate Notes	27.8%

Updated Prospectus Web Address

C000163598

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Ultra-Short Income Portfolio

Class Name

Institutional Class

Trading Symbol

MUIIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Ultra-Short Income Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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	$15	0.30%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 15

Expense Ratio, Percent

0.30%

^[16]

AssetsNet

$ 18,261,357,133

Holdings Count | Holding

219

InvestmentCompanyPortfolioTurnover

0.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$18,261,357,133
# of Portfolio Holdings	219
Portfolio Turnover Rate	0%

Holdings [Text Block]

Credit Quality (% of net assets)^{Footnote Referencea}

Table Summary
Value	Value
Cash and Equivalents	79.8%
BBB	1.6%
A	16.4%
AA	2.2%

Footnote	Description
Footnote^a	Security ratings disclosed is an aggregation of the highest security level rating amongst S&P Global Ratings, Moody's Investors Services, Inc., and Fitch Ratings, each a Nationally Recognized Statistical Ratings Organization.

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Sovereign	0.3%
Corporate Bonds	12.2%
Certificates of Deposit	14.8%
Commercial Paper	22.3%
Repurchase Agreements	22.6%
Floating Rate Notes	27.8%

Material Fund Change [Text Block]

Updated Prospectus Web Address

C000163599

Shareholder Report [Line Items]

Fund Name

Morgan Stanley Institutional Fund Trust - Ultra-Short Income Portfolio

Class Name

Class IR

Trading Symbol

MULSX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Morgan Stanley Institutional Fund Trust - Ultra-Short Income Portfolio for the period of October 1, 2025 to March 31, 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 1-800-869-6397.

Additional Information Phone Number

1-800-869-6397

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
Class IR	$13	0.25%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.25%

^[17]

AssetsNet

$ 18,261,357,133

Holdings Count | Holding

219

InvestmentCompanyPortfolioTurnover

0.00%

Additional Fund Statistics [Text Block]

Key Fund Statistics

Table Summary
Total Net Assets	$18,261,357,133
# of Portfolio Holdings	219
Portfolio Turnover Rate	0%

Holdings [Text Block]

Credit Quality (% of net assets)^{Footnote Referencea}

Table Summary
Value	Value
Cash and Equivalents	79.8%
BBB	1.6%
A	16.4%
AA	2.2%

Footnote	Description
Footnote^a	Security ratings disclosed is an aggregation of the highest security level rating amongst S&P Global Ratings, Moody's Investors Services, Inc., and Fitch Ratings, each a Nationally Recognized Statistical Ratings Organization.

Credit Quality Explanation [Text Block]

Asset Allocation (% of total investments)

Table Summary
Value	Value
Sovereign	0.3%
Corporate Bonds	12.2%
Certificates of Deposit	14.8%
Commercial Paper	22.3%
Repurchase Agreements	22.6%
Floating Rate Notes	27.8%

Updated Prospectus Web Address

[1]	Annualized
[2]	Annualized
[3]	Annualized
[4]	Annualized
[5]	Annualized
[6]	Annualized
[7]	Annualized
[8]	Annualized
[9]	Annualized
[10]	Annualized
[11]	Annualized
[12]	Annualized
[13]	Annualized
[14]	Annualized
[15]	Annualized
[16]	Annualized
[17]	Annualized

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of net assets)Footnote Referencea

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of net assets)Footnote Referencea

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of net assets)Footnote Referencea

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of net assets)Footnote Referencea

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

Top Ten Holdings (% of total investments)Footnote Referencea

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

Top Ten Holdings (% of total investments)Footnote Referencea

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

Top Ten Holdings (% of total investments)Footnote Referencea

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

Top Ten Holdings (% of total investments)Footnote Referencea

What were the Fund costs for the last six months?

Key Fund Statistics

Sector Allocation (% of total investments)

Top Ten Holdings (% of total investments)Footnote Referencea

What were the Fund costs for the last six months?

Key Fund Statistics

Geographic Allocation (% of total investments)

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Geographic Allocation (% of total investments)

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Geographic Allocation (% of total investments)

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Geographic Allocation (% of total investments)

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Geographic Allocation (% of total investments)

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of net assets)Footnote Referencea

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of net assets)Footnote Referencea

Asset Allocation (% of total investments)

What were the Fund costs for the last six months?

Key Fund Statistics

Credit Quality (% of net assets)Footnote Referencea

Asset Allocation (% of total investments)

Credit Quality (% of net assets)^{Footnote Referencea}

Credit Quality (% of net assets)^{Footnote Referencea}

Credit Quality (% of net assets)^{Footnote Referencea}

Credit Quality (% of net assets)^{Footnote Referencea}

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Top Ten Holdings (% of total investments)^{Footnote Referencea}

Credit Quality (% of net assets)^{Footnote Referencea}

Credit Quality (% of net assets)^{Footnote Referencea}

Credit Quality (% of net assets)^{Footnote Referencea}