Jun. 30, 2026 |
| Prospectus Summary | Franklin Institutional U.S. Government Money Market Fund
|
Risk Table - Prospectus Summary - Franklin Institutional U.S. Government Money Market Fund
|
Risk [Text Block] |
| Principal Risks |
Principal
Risks You
could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment
at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not a bank account
and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government
agency. The Fund’s sponsor is not required to reimburse the Fund for losses, and you should not expect
that the sponsor will provide financial support to the Fund at any time, including during periods of
market stress.
|
| Risk Lose Money [Member] |
You
could lose money by investing in the Fund.
|
| Risk Not Insured [Member] |
An investment in the Fund is not a bank account
and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government
agency.
|
| Risk Money Market Fund May Not Preserve Dollar [Member] |
Although the Fund seeks to preserve the value of your investment
at $1.00 per share, it cannot guarantee it will do so.
|
| Interest Rate |
Interest Rate: When interest rates rise, debt security
prices generally fall. The opposite is also generally true: debt security prices rise when interest rates
fall. Interest rate changes are influenced by a number of factors, including government policy, monetary
policy, inflation expectations, perceptions of risk, and supply of and demand for debt securities. The
Fund's yield will vary. A low interest or negative rate environment may prevent the Fund from providing
a positive yield or paying Fund expenses out of current income and could impair the Fund's ability to
maintain a stable net asset value. A sharp and unexpected rise in interest rates could cause the Fund's
share price to drop below a dollar. In general, securities with longer maturities or durations are more
sensitive to these interest rate changes.
|
| Credit |
Credit: U.S. government investments generally
have the least credit risk but are not completely free of credit risk. The Fund may incur losses on debt
securities that are inaccurately perceived to present a different amount of credit risk by the market,
the investment manager or the rating agencies than such securities actually do. Any downgrade of securities
issued by the U.S. government may result in a downgrade of securities issued by its agencies or instrumentalities.
|
| Income |
Income:
The Fund's distributions to shareholders may decline when prevailing interest rates fall, when the Fund
experiences defaults on debt securities it holds or when the Fund realizes a loss upon the sale of a
debt security. Because the Fund limits its investments to high-quality, short-term securities, its portfolio
generally will earn lower yields than a portfolio with lower-quality, longer-term securities subject
to more risk.
|
| U.S. Government Securities |
U.S. Government Securities: Not all obligations
of the U.S. Government, its agencies and instrumentalities are backed by the full faith and credit of
the United States. Some obligations are backed only by the credit of the issuing agency or instrumentality,
and in some cases there may be some risk of default by the issuer. Government agency or instrumentality
issues have different levels of credit support. U.S. government-sponsored entities ("GSEs"),
such as Fannie Mae and Freddie Mac, may be chartered by Acts of Congress, but their securities are neither
issued nor guaranteed by the U.S. government. Although the U.S. government has provided financial support
to Fannie Mae, Freddie Mac and certain other GSEs in the past, no assurance can be given that the U.S.
government will continue to do so. Accordingly, securities issued by Fannie Mae and Freddie
Mac may involve a risk of non-payment of principal and interest. Investors should remember that guarantees
of timely repayment of principal and interest do not apply to the market prices and yields of the securities
or to the net asset value or performance of the Fund, which will vary with changes in interest rates
and other market conditions.
|
| Repurchase Agreements |
Repurchase Agreements: A repurchase agreement
exposes the Fund to the risk that the party that sells the securities to the Fund may default on its
obligation to repurchase such securities.
|
| Market |
Market: The market values of
securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably.
The market value of a security or other investment may be reduced by market activity or other results
of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When
there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers,
prices tend to rise. In addition, the value of the Fund’s investments may go up or down due to general
market or other conditions that are not specifically related to a particular issuer, such as: real or
perceived adverse economic changes, including widespread liquidity issues and defaults in one or more
industries; changes in interest, inflation or exchange rates; unexpected natural and man-made world events,
such as diseases or disasters; financial, political or social disruptions, including terrorism and war;
and U.S. trade disputes or other disputes with specific countries that could result in additional tariffs,
trade barriers and/or investment restrictions in certain securities in those countries. Any of these
conditions can adversely affect the economic prospects of many companies, sectors, nations, regions and
the market in general, in ways that cannot necessarily be foreseen. Ongoing or threatened
armed conflicts throughout the world have caused and could continue to cause significant market disruptions
and volatility. The hostilities and sanctions resulting from those hostilities could have a significant
adverse impact on certain investments of the Fund as well as the Fund’s performance and liquidity.
|
| Master/Feeder Structure |
Master/Feeder
Structure: The Fund seeks to achieve its investment goal by investing all of its assets
in shares of the Master Portfolio. The Master Portfolio has the same investment goal and policies as
the Fund. The Fund buys shares of the Master
Portfolio at net asset value. An investment in the Fund is an indirect investment in the Master Portfolio.
It is possible that the Fund may have to withdraw its investment in the Master Portfolio if the Master
Portfolio changes its investment goal or if the Fund’s board of trustees, at any time, considers it
to be in the Fund’s best interest.
|
| Management |
Management: The Fund is subject
to management risk because it is an actively managed investment portfolio. The investment manager applies
investment techniques and risk analyses in making investment decisions for the Master Portfolio, but
there can be no guarantee that these decisions will produce the desired results.
|
| Cybersecurity |
Cybersecurity:
Cybersecurity incidents, both intentional and unintentional, may allow an unauthorized party to gain
access to Fund assets, Fund or customer data (including private shareholder information), or proprietary
information, cause the Fund, the investment manager, authorized participants, or index providers (as
applicable) and listing exchanges, and/or their service providers (including, but not limited to, Fund
accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data
breaches, data corruption or loss of operational functionality or prevent Fund investors from purchasing,
redeeming shares or receiving distributions. The investment manager has limited ability to prevent or
mitigate cybersecurity incidents affecting third party service providers, and such third party service
providers may have limited indemnification obligations to the Fund or the investment manager. Cybersecurity
incidents may result in financial losses to the Fund and its shareholders, and substantial costs may
be incurred in an effort to prevent or mitigate future cybersecurity incidents. Issuers of securities
in which the Fund invests are also subject to cybersecurity risks, and the value of these securities
could decline if the issuers experience cybersecurity incidents. Because technology is
frequently changing (including the development of artificial intelligence and machine learning), new
ways to carry out cyber attacks are always developing. Therefore, there is a chance that some risks have
not been identified or prepared for, or that an attack may not be detected, which puts limitations on
the Fund's ability to plan for or respond to a cyber attack. Like other funds and business enterprises,
the Fund, the investment manager, and their service providers are subject to the risk of cyber incidents
occurring from time to time. The rapid development and increasingly widespread use of artificial intelligence
technologies could increase the effectiveness of cyber attacks and exacerbate the risks.
|
|
| Prospectus Summary | Franklin Institutional U.S. Government Money Market Fund
|
Risk Table - Prospectus Summary - Franklin Institutional U.S. Government Money Market Fund
|
Risk [Text Block] |
| Principal Risks |
Principal
Risks You
could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment
at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not a bank account
and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government
agency. The Fund’s sponsor is not required to reimburse the Fund for losses, and you should not expect
that the sponsor will provide financial support to the Fund at any time, including during periods of
market stress.
|
| Risk Lose Money [Member] |
You
could lose money by investing in the Fund.
|
| Risk Not Insured [Member] |
An investment in the Fund is not a bank account
and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government
agency.
|
| Risk Money Market Fund May Not Preserve Dollar [Member] |
Although the Fund seeks to preserve the value of your investment
at $1.00 per share, it cannot guarantee it will do so.
|
| Interest Rate |
Interest Rate: When interest rates rise, debt security
prices generally fall. The opposite is also generally true: debt security prices rise when interest rates
fall. Interest rate changes are influenced by a number of factors, including government policy, monetary
policy, inflation expectations, perceptions of risk, and supply of and demand for debt securities. The
Fund's yield will vary. A low interest or negative rate environment may prevent the Fund from providing
a positive yield or paying Fund expenses out of current income and could impair the Fund's ability to
maintain a stable net asset value. A sharp and unexpected rise in interest rates could cause the Fund's
share price to drop below a dollar. In general, securities with longer maturities or durations are more
sensitive to these interest rate changes.
|
| Credit |
Credit: U.S. government investments generally
have the least credit risk but are not completely free of credit risk. The Fund may incur losses on debt
securities that are inaccurately perceived to present a different amount of credit risk by the market,
the investment manager or the rating agencies than such securities actually do. Any downgrade of securities
issued by the U.S. government may result in a downgrade of securities issued by its agencies or instrumentalities.
|
| Income |
Income:
The Fund's distributions to shareholders may decline when prevailing interest rates fall, when the Fund
experiences defaults on debt securities it holds or when the Fund realizes a loss upon the sale of a
debt security. Because the Fund limits its investments to high-quality, short-term securities, its portfolio
generally will earn lower yields than a portfolio with lower-quality, longer-term securities subject
to more risk.
|
| U.S. Government Securities |
U.S. Government Securities: Not all obligations
of the U.S. Government, its agencies and instrumentalities are backed by the full faith and credit of
the United States. Some obligations are backed only by the credit of the issuing agency or instrumentality,
and in some cases there may be some risk of default by the issuer. Government agency or instrumentality
issues have different levels of credit support. U.S. government-sponsored entities ("GSEs"),
such as Fannie Mae and Freddie Mac, may be chartered by Acts of Congress, but their securities are neither
issued nor guaranteed by the U.S. government. Although the U.S. government has provided financial support
to Fannie Mae, Freddie Mac and certain other GSEs in the past, no assurance can be given that the U.S.
government will continue to do so. Accordingly, securities issued by Fannie Mae and Freddie
Mac may involve a risk of non-payment of principal and interest. Investors should remember that guarantees
of timely repayment of principal and interest do not apply to the market prices and yields of the securities
or to the net asset value or performance of the Fund, which will vary with changes in interest rates
and other market conditions.
|
| Repurchase Agreements |
Repurchase Agreements: A repurchase agreement
exposes the Fund to the risk that the party that sells the securities to the Fund may default on its
obligation to repurchase such securities.
|
| Market |
Market: The market values of
securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably.
The market value of a security or other investment may be reduced by market activity or other results
of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When
there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers,
prices tend to rise. In addition, the value of the Fund’s investments may go up or down due to general
market or other conditions that are not specifically related to a particular issuer, such as: real or
perceived adverse economic changes, including widespread liquidity issues and defaults in one or more
industries; changes in interest, inflation or exchange rates; unexpected natural and man-made world events,
such as diseases or disasters; financial, political or social disruptions, including terrorism and war;
and U.S. trade disputes or other disputes with specific countries that could result in additional tariffs,
trade barriers and/or investment restrictions in certain securities in those countries. Any of these
conditions can adversely affect the economic prospects of many companies, sectors, nations, regions and
the market in general, in ways that cannot necessarily be foreseen. Ongoing or threatened
armed conflicts throughout the world have caused and could continue to cause significant market disruptions
and volatility. The hostilities and sanctions resulting from those hostilities could have a significant
adverse impact on certain investments of the Fund as well as the Fund’s performance and liquidity.
|
| Master/Feeder Structure |
Master/Feeder
Structure: The Fund seeks to achieve its investment goal by investing all of its assets
in shares of the Master Portfolio. The Master Portfolio has the same investment goal and policies as
the Fund. The Fund buys shares of the Master
Portfolio at net asset value. An investment in the Fund is an indirect investment in the Master Portfolio.
It is possible that the Fund may have to withdraw its investment in the Master Portfolio if the Master
Portfolio changes its investment goal or if the Fund’s board of trustees, at any time, considers it
to be in the Fund’s best interest.
|
| Management |
Management: The Fund is subject
to management risk because it is an actively managed investment portfolio. The investment manager applies
investment techniques and risk analyses in making investment decisions for the Master Portfolio, but
there can be no guarantee that these decisions will produce the desired results.
|
| Cybersecurity |
Cybersecurity:
Cybersecurity incidents, both intentional and unintentional, may allow an unauthorized party to gain
access to Fund assets, Fund or customer data (including private shareholder information), or proprietary
information, cause the Fund, the investment manager, authorized participants, or index providers (as
applicable) and listing exchanges, and/or their service providers (including, but not limited to, Fund
accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data
breaches, data corruption or loss of operational functionality or prevent Fund investors from purchasing,
redeeming shares or receiving distributions. The investment manager has limited ability to prevent or
mitigate cybersecurity incidents affecting third party service providers, and such third party service
providers may have limited indemnification obligations to the Fund or the investment manager. Cybersecurity
incidents may result in financial losses to the Fund and its shareholders, and substantial costs may
be incurred in an effort to prevent or mitigate future cybersecurity incidents. Issuers of securities
in which the Fund invests are also subject to cybersecurity risks, and the value of these securities
could decline if the issuers experience cybersecurity incidents. Because technology is
frequently changing (including the development of artificial intelligence and machine learning), new
ways to carry out cyber attacks are always developing. Therefore, there is a chance that some risks have
not been identified or prepared for, or that an attack may not be detected, which puts limitations on
the Fund's ability to plan for or respond to a cyber attack. Like other funds and business enterprises,
the Fund, the investment manager, and their service providers are subject to the risk of cyber incidents
occurring from time to time. The rapid development and increasingly widespread use of artificial intelligence
technologies could increase the effectiveness of cyber attacks and exacerbate the risks.
|
|