497

	787 Seventh Avenue
	New York, NY 10019-6099 Tel:  212 728 8000 Fax: 212 728 8111

October 17, 2012

VIA EDGAR

Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549

Re:	Credit Suisse Opportunity Funds
	Securities Act File No. 33-92982
	Investment Company Act File No. 811-9054

Ladies and Gentlemen:

On behalf of the Registrant and pursuant to Rule 497(e) under the Securities Act of 1933, as amended, attached for filing are exhibits containing interactive data format risk/return summary information that mirrors the risk/return summary information in the Prospectuses, dated September 25, 2012, for the Credit Suisse Managed Futures Strategy Fund (the “Fund”), a series of Credit Suisse Opportunity Funds. The purpose of the filing is to submit the 497 filing dated October 1, 2012 in XBRL for the Fund.

Any questions or comments on the attached should be directed to the undersigned at 212-728-8611.

Sincerely,

/s/ Elizabeth G. Miller

Elizabeth G. Miller

NEW YORK    WASHINGTON    PARIS    LONDON    MILAN    ROME    FRANKFURT    BRUSSELS

in alliance with Dickson Minto W.S., London and Edinburgh

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Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund

CREDIT SUISSE MANAGED FUTURES STRATEGY FUND

INVESTMENT OBJECTIVE

The fund seeks to achieve investment results that correspond generally to the
performance, before fees and expenses, of the Credit Suisse Managed Futures
Liquid Index.

FEES AND FUND EXPENSES

The accompanying tables describe the fees and expenses that you may pay if you
buy and hold shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or
agree to invest in the future, at least $50,000 in Credit Suisse Funds. More
information about these and other discounts is available from your financial
representative and in this Prospectus on page 56 under the heading "Other
Shareholder Information - Class A and C Shares and Sales Charges" and in the
fund's Statement of Additional Information ("SAI") on page 36 under the heading
"Additional Purchase and Redemption Information."

Shareholder fees (paid directly from your investment)

Shareholder Fees Credit Suisse Managed Futures Strategy Fund	Class A		Class C		Class I
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	5.25%		none		none
Maximum deferred sales charge (load) (as a percentage of the lesser of original purchase price or redemption proceeds, as applicable)	none	[1]	1.00%	[2]	none
Maximum sales charge (load) on reinvested distributions (as a percentage of offering price)	none		none		none
Redemption or exchange fees (as a percentage of net asset value on date of redemption or exchange) (for shares redeemed or exchanged within 30 days from the date of purchase)	2.00%		2.00%		2.00%

Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses Credit Suisse Managed Futures Strategy Fund		Class A	Class C	Class I
Management fee		1.15%	1.15%	1.15%
Distribution and service (12b-1) fee		0.25%	1.00%	none
Other expenses of the fund	[1]	0.91%	0.91%	0.91%
Other expenses of the subsidiary	[1]	0.05%	0.05%	0.05%
Total annual fund operating expenses		2.36%	3.11%	2.11%
Less: amount of fee limitations/expense reimbursements	[2]	0.41%	0.41%	0.41%
Total annual fund operating expenses after fee limitations/expense reimbursements		1.95%	2.70%	1.70%

EXAMPLE

This example may help you compare the cost of investing in the fund with the
cost of investing in other mutual funds.

Assume you invest $10,000, the fund returns 5% annually, expense ratios remain
the same and you close your account at the end of each of the time periods shown.
Based on these assumptions, your cost would be:

Expense Example Credit Suisse Managed Futures Strategy Fund (USD $)	Expense Example, with Redemption, 1 Year	Expense Example, with Redemption, 3 Years
Class A	713	1,186
Class C	373	921
Class I	173	621

Expense Example, No Redemption Credit Suisse Managed Futures Strategy Fund (USD $)	Expense Example, No Redemption, 1 Year	Expense Example, No Redemption, 3 Years
Class A	713	1,186
Class C	273	921
Class I	173	621

PORTFOLIO TURNOVER

The fund's portfolio turnover rate is expected to be low for regulatory purposes
because the computation excludes trades of derivatives and instruments with a
maturity of one year or less. However, the fund expects to engage in frequent
trading of derivatives, which could have tax consequences that impact
shareholders, such as the realization of taxable short-term capital gains. In
addition, the fund could incur transaction costs, such as commissions, when it
buys and sells securities and other instruments. Transaction costs, which are
not reflected in annual fund operating expenses or in the example, affect the
fund's performance.

PRINCIPAL INVESTMENT STRATEGIES

The fund seeks to achieve investment results that correspond generally to the
performance, before fees and expenses, of the Credit Suisse Managed Futures
Liquid Index (the "Index"). The Index, which was developed and is maintained by
Credit Suisse, is designed to provide exposure to both up and down price trends
in four broad asset classes: equities, fixed income, commodities and currencies.
The Index is currently composed of 14 futures contracts and 4 commodity indices
which provide exposure to the asset classes. The Index uses a proprietary
quantitative methodology to seek to identify price trends in each of the asset
classes over a variety of time horizons. Components of the Index, which may
change from time to time, are positioned either long or short based on the price
trends within the asset classes determined using the Index's quantitative
methodology.

The fund seeks to achieve its investment objective by investing directly and/or
indirectly through the Subsidiary (as described below) in a combination of
securities and derivative instruments that, as a whole, are intended to produce
returns, before fees and expenses, that generally track the returns of the
Index. The fund's investments may include, but are not limited to, equity index
futures, swaps on equity index futures, equity swaps, fixed income futures,
swaps on fixed income futures, commodity and commodity index-linked futures,
swaps on commodity and commodity index-linked futures, currency futures, swaps
on currency futures, currency forwards and equity-, fixed income-, commodity-
and currency-linked structured notes and exchange-traded notes ("ETNs"). There
are no geographic limits on the fund's holdings and the fund will have exposure
to U.S. and non-U.S. securities and currencies. In addition, the fund may have
exposure to issuers of any size or credit quality. The fund also invests a
significant portion of its assets in investment grade money market instruments,
which may include, but are not limited to, U.S. government securities, U.S.
government agency securities, short-term fixed income securities, repurchase
agreements, money market mutual fund shares, and cash and cash equivalents with
one year or less to maturity. The fund's money market instrument holdings serve
as collateral for the fund's derivative positions and also earn income for the
fund. The fund's return is expected to be derived principally from changes in
the value of securities and its portfolio is expected to consist principally of
securities.

The fund's use of futures, forwards, swaps and certain other financial instruments
will have the economic effect of financial leverage. Financial leverage magnifies
the exposure to the swings in prices of an asset class underlying a financial
instrument and results in increased volatility, which means that the fund will have
the potential for greater gains, as well as the potential for greater losses, than
if the fund does not use financial instruments that have a leveraging effect.
Leveraging tends to magnify, sometimes significantly, the effect of any increase
or decrease in the fund's exposure to an asset class and may cause the fund's net
asset value ("NAV") to be volatile. A decline in the fund's assets due to losses
magnified by the financial instruments providing leveraged exposure may require
the fund to liquidate portfolio positions to satisfy its obligations, to meet
redemption requests or to meet asset segregation requirements under the Investment
Company Act of 1940, as amended (the "1940 Act"), when it may not be advantageous
to do so.

The fund will enter into short positions in seeking to track the Index, and may
use futures and swaps to do so. For example, the fund may enter into a futures
contract pursuant to which it agrees to sell an asset (that it does not currently
own) at a specified price at a specified point in the future. This gives the fund
a short position with respect to the asset. At times, the fund may have significant
short positions as a result of the composition of the Index.

The fund intends to make investments through the Credit Suisse Cayman Managed
Futures Strategy Fund, Ltd, a wholly-owned subsidiary of the fund organized
under the laws of the Cayman Islands (the "Subsidiary"), and may invest up to
25% of its total assets in the Subsidiary. The fund will invest in the
Subsidiary primarily to gain exposure to the commodities markets within the
limitations of the federal tax laws, rules and regulations that apply to
registered investment companies. Generally, the Subsidiary will invest in (long
and short) commodity-linked futures and swaps, but it may also invest in other
types of futures, swaps and options, as well as certain money market instruments,
including U.S. government securities, money market fund shares, repurchase
agreements and other high-quality, short-term fixed income instruments. The
primary purpose of the money market instruments held by the Subsidiary will be to
serve as collateral for the Subsidiary's derivative positions; however, these
instruments may also earn income for the Subsidiary.

The Index is rebalanced on a daily basis. Upon rebalancing, the Index may
reposition a component from long to short, or vice versa, based on the
prevailing trends of the component's market price identified by the Index's
quantitative methodology. The fund generally repositions its portfolio holdings
on a daily basis in accordance with the rebalancing of the Index. The percentage
of the fund's portfolio exposed to each asset class will vary from time to time
as the Index component positions change. In addition, for purposes of efficient
portfolio management or to avoid unnecessary costs, the portfolio managers may
choose to not include one or more Index components in the fund's portfolio in
certain limited circumstances.

The fund is "non-diversified," meaning that a relatively high percentage of its
assets may be invested in a limited number of issuers of securities.

PRINCIPAL RISKS OF INVESTING IN THE FUND

A WORD ABOUT RISK

All investments involve some level of risk. Simply defined, risk is the
possibility that you will lose money or not make money.

Principal risk factors for the fund are discussed below. Before you invest,
please make sure you understand the risks that apply to the fund. As with
any mutual fund, you could lose money over any period of time.

The fund is not a complete investment program and should only form a part of a
diversified portfolio. Investors in the fund should be willing to assume the
risks of potentially significant short-term share price fluctuations.

Investments in the fund are not bank deposits and are not insured or guaranteed
by the Federal Deposit Insurance Corporation or any other government agency.

CFTC REGULATION

Due to recent Commodity Futures Trading Commission ("CFTC") rule amendments, the
disclosures and operations of the fund will need to comply with applicable
regulations governing commodity pools, which will increase the fund's regulatory
compliance costs. Other potentially adverse regulatory initiatives could
develop.

COMMODITY EXPOSURE RISKS

Exposure to the commodities markets may subject the fund to greater volatility
than investments in traditional securities. The value of commodity futures and
swaps may be affected by changes in overall market movements, commodity index
volatility, changes in interest rates, or sectors affecting a particular industry
or commodity, such as drought, floods, weather, livestock disease, embargoes,
tariffs and international economic, political and regulatory developments.

CONCENTRATION RISK

If the Index is or becomes concentrated in a particular industry or group of
industries, the fund may invest 25% or more of the value of its total assets in
that industry or group of industries to the extent that it is necessary to gain
exposure to that industry or group of industries for purposes of tracking the Index.
Concentration of investments in a particular industry or group of industries could
subject the fund to greater risk of loss and could be considerably more volatile
than a broad-based market index or other mutual funds that are diversified across
a greater number of industries.

CREDIT RISK

The issuer of a debt instrument, the borrower of a loan or the counterparty to a
contract, including derivatives contracts, may default or otherwise become unable
to honor a financial obligation. Changes in an issuer's credit rating or the
market's perception of an issuer's creditworthiness also may affect the value of
the fund's investment in that issuer.

CURRENCY RISK

Currency risk is the risk that changes in currency exchange rates will
negatively affect securities or instruments denominated in, and/or payments
received in, foreign currencies. Adverse changes in currency exchange rates
(relative to the U.S. dollar) may erode or reverse any potential gains from the
fund's investments in financial instruments with underlying securities or
instruments denominated in a foreign currency or may widen existing losses.

DERIVATIVES RISK

Derivatives are financial contracts whose values depend on, or are derived from,
the value of an underlying asset, instrument or index. The fund's use of
derivative instruments involves risks different from, or possibly greater than,
the risks associated with investing directly in securities and other traditional
investments. Derivatives are subject to a number of risks described elsewhere in
this Prospectus, such as commodity exposure risks, currency risk, equity risk,
fixed income risk, interest rate risk, market risk and credit risk. Also,
suitable derivative transactions may not be available in all circumstances.

EQUITY RISK

Equity security prices have historically risen and fallen in periodic cycles.
U.S. and foreign equity markets have experienced periods of substantial price
volatility in the past and may do so again in the future.

EXCHANGE-TRADED NOTES RISK

ETNs are a type of unsecured, unsubordinated debt security that have characteristics
and risks similar to those of fixed income securities and trade on a major exchange
similar to shares of exchange-traded funds ("ETFs"). However, this type of debt
security differs from other types of bonds and notes because ETN returns are based
upon the performance of a market index minus applicable fees, no periodic coupon
payments are distributed, and no principal protections exist. The purpose of ETNs
is to create a type of security that combines the aspects of both bonds and ETFs.
The value of an ETN may be influenced by time to maturity, level of supply and
demand for the ETN, volatility and lack of liquidity in underlying commodities or
securities markets, changes in the applicable interest rates, changes in the issuer's
credit rating and economic, legal, political or geographic events that affect the
referenced commodity or security.
  
FIXED INCOME RISK

The market value of fixed income investments, and financial instruments related
to those fixed income investments, will change in response to interest rate
changes and other factors, such as changes in the effective maturities and
credit ratings of fixed income investments. During periods of falling interest
rates, the values of outstanding fixed income securities and related financial
instruments generally rise. Conversely, during periods of rising interest rates,
the values of such securities and related financial instruments generally
decline. Fixed income investments are also subject to credit risk.

FOREIGN SECURITIES RISK

A fund that invests outside the U.S. carries additional risks that include:

o Currency Risk See "Currency Risk" above.

o Information Risk Key information about an issuer, security or market may be
inaccurate or unavailable.

o Political Risk Foreign governments may expropriate assets, impose capital or
currency controls, impose punitive taxes, or nationalize a company or industry.
Any of these actions could have a severe effect on security prices and impair
the fund's ability to bring its capital or income back to the U.S. Other
political risks include economic policy changes, social and political
instability, military action and war.

FORWARDS RISK

Forwards are not exchange-traded and therefore no clearinghouse or exchange stands
ready to meet the obligations of the contracts. Thus, the fund faces the risk that
its counterparties may not perform their obligations. Forward contracts are not
regulated by the CFTC and therefore, the fund will not receive any benefit of CFTC
regulation when trading forwards.

FUTURES CONTRACTS RISK

The risks associated with the fund's use of futures contracts and swaps and
structured notes that reference the price of futures contracts include the risk
that: (i) changes in the price of a futures contract may not always track the
changes in market value of the underlying reference asset; (ii) trading
restrictions or limitations may be imposed by an exchange, and government
regulations may restrict trading in futures contracts; and (iii) if the fund has
insufficient cash to meet margin requirements, the fund may need to sell other
investments, including at disadvantageous times.

INDEX/TRACKING ERROR RISK

Although the fund attempts to track the investment performance of the Index, the
fund may not be able to duplicate its exact return. In addition, unlike the fund,
the returns of the Index are not reduced by investment and other operating expenses.

INTEREST RATE RISK

Changes in interest rates may cause a decline in the market value of an
investment. With bonds and other debt instruments, a rise in interest rates
typically causes a fall in values, while a fall in interest rates typically
causes a rise in values. Generally, the longer the maturity or duration of a
debt instrument, the greater the impact of a change in interest rates on the
instrument's value.

LEVERAGING RISK

The fund may invest in certain derivatives that provide leveraged exposure. The
fund's investment in these instruments generally requires a small investment
relative to the amount of investment exposure assumed. As a result, such
investments may cause the fund to lose more than the amount it invested in those
instruments. The net asset value of the fund when employing leverage will be
more volatile and sensitive to market movements. Leverage may involve the
creation of a liability that requires the portfolio to pay interest.

MARKET RISK

The market value of an instrument may fluctuate, sometimes rapidly and
unpredictably. These fluctuations, which are often referred to as "volatility,"
may cause an instrument to be worth less than it was worth at an earlier time.
Market risk may affect a single issuer, industry, sector of the economy, or the
market as a whole. Market risk is common to most investments - including stocks,
bonds and commodities, and the mutual funds that invest in them.

MODEL AND STYLE RISK

The fund bears the risk that the Index's proprietary quantitative methodology will
not be successful in identifying price trends in each of the asset classes to which
the Index provides exposure. Further, the Index's proprietary quantitative
methodology may incorrectly identify price trends and these misidentified
opportunities may lead to substantial losses. In addition, there may be periods when
investing based on price trends is out of favor, and during which the investment
performance of a fund or index using a trend strategy may underperform funds or
indices using other investment approaches.

MONEY MARKET FUNDS RISK

Investing in money market funds subjects the fund to a pro rata portion of the
money market fund's fees and expenses.
  
NON-DIVERSIFIED STATUS

The fund is considered a non-diversified investment company under the 1940 Act,
and is permitted to invest a greater proportion of its assets in the securities
of a smaller number of issuers. As a result, the fund may be subject to greater
volatility with respect to its portfolio securities than a fund that is
diversified.

PORTFOLIO TURNOVER RISK

The fund expects to engage in frequent trading of derivatives. Active and
frequent trading may lead to the realization and distribution to shareholders of
higher short-term capital gains, which would increase their tax liability.
Frequent trading also increases transaction costs, which could detract from the
fund's performance.

REPURCHASE AGREEMENTS RISK

Repurchase agreements could involve certain risks in the event of default or
insolvency of the seller, including losses and possible delays or restrictions
upon the fund's ability to dispose of the underlying securities. To the extent
that, in the meantime, the value of the securities that the fund has purchased
has decreased, the fund could experience a loss. The fund will be exposed to the
credit of the counterparties to repurchase agreements and their ability to
satisfy the terms of the agreements, which exposes the fund to the risk that the
counterparties may default on their obligations to perform under the agreements.

SHORT POSITION RISK

The fund or the Subsidiary may enter into a short position through a futures
contract or swap agreement. Taking short positions involves leverage of the
fund's or the Subsidiary's assets and presents various risks. If the price of
the asset, instrument or market on which the fund or the Subsidiary has taken a
short position increases, then the fund or the Subsidiary will incur a loss
equal to the increase in price from the time that the short position was entered
into plus any premiums and interest paid to a third party. Therefore, taking
short positions involves the risk that losses may be exaggerated, potentially
losing more money than the actual cost of the investment. The fund's or the
Subsidiary's loss on a short sale could theoretically be unlimited in a case
where the fund or the Subsidiary, as the case may be, is unable, for whatever
reason, to close out its short position. The fund's risk of loss with respect to
short sales may be significant, as the fund may have a substantial amount of
short positions in its portfolio.

SPECULATIVE EXPOSURE RISK

Gains or losses from speculative positions in a derivative may be much greater
than the derivative's original cost. For example, potential losses from swaps
and speculative short sales are unlimited.

STRUCTURED NOTE RISK

The value of a structured note will be influenced by time to maturity, level of
supply and demand for the type of note, interest rate and market volatility,
changes in the issuer's credit rating, and economic, legal, political, or
geographic events that affect the reference asset. In addition, there may be a
lag between a change in the value of the underlying reference asset and the
value of the structured note.

SUBSIDIARY RISK

By investing in the Subsidiary, the fund is indirectly exposed to the risks
associated with the Subsidiary's investments. The derivatives and other
investments held by the Subsidiary are generally similar to those that are
permitted to be held by the fund and are subject to the same risks that apply to
similar investments if held directly by the fund. These risks are described
elsewhere in this Prospectus. There can be no assurance that the investment
objective of the Subsidiary will be achieved.

The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted
in this Prospectus, is not subject to all the investor protections of the 1940
Act. However, the fund wholly owns and controls the Subsidiary, and the fund and
the Subsidiary are both managed by Credit Suisse, making it unlikely that the
Subsidiary will take action contrary to the interests of the fund and its
shareholders. The fund's Board of Trustees has oversight responsibility for the
investment activities of the fund, including its investment in the Subsidiary,
and the fund's role as sole shareholder of the Subsidiary. The Subsidiary will
be subject to the same investment restrictions and limitations, and follow the
same compliance policies and procedures as the fund.

Changes in the laws of the United States and/or the Cayman Islands could result
in the inability of the fund and/or the Subsidiary to continue to operate as it
does currently and could adversely affect the fund.

SWAP AGREEMENTS RISK

Swap agreements involve the risk that the party with whom the fund has entered
into the swap will default on its obligation to pay the fund and the risk that
the fund will not be able to meet its obligations to pay the other party to the
agreement.

TAX RISK

In order to qualify as a Regulated Investment Company (a "RIC") under the
Internal Revenue Code of 1986, as amended (the "Code"), the fund must meet
certain requirements regarding the source of its income, the diversification
of its assets and the distribution of its income. The Internal Revenue Service
("IRS") has issued a ruling that income realized from certain types of
commodity-linked derivatives would not be qualifying income. As a result, the
fund's ability to realize income from investments in such commodity-linked
derivatives as part of its investment strategy would be limited to a maximum
of 10% of its gross income. If the fund fails to qualify as a RIC, the fund
will be subject to federal income tax on its net income at regular corporate
rates (without reduction for distributions to shareholders). When distributed,
that income also would be taxable to shareholders as an ordinary dividend to the
extent attributable to the fund's earnings and profits. If the fund were to fail
to qualify as a RIC and became subject to federal income tax, shareholders of
the fund would be subject to diminished returns.

The IRS has issued private letter rulings to registered investment companies
concluding that income derived from their investment in a wholly-owned subsidiary
would constitute qualifying income to the fund. The IRS has indicated that the
granting of these types of private letter rulings is currently suspended, pending
further internal discussion. As a result, the fund has not received and there can
be no assurance that the IRS will grant, such a private letter ruling to the fund.
If the fund does not request and receive such a private letter ruling, there is a
risk that the IRS could assert that the income derived from the fund's investment
in the Subsidiary will not be considered qualifying income for purposes of the
fund remaining qualified as a RIC for U.S. federal income tax purposes.

U.S. GOVERNMENT SECURITIES RISK

Obligations of U.S. government agencies and authorities are supported by varying
degrees of credit but generally are not backed by the full faith and credit of
the U.S. government. No assurance can be given that the U.S. government will
provide financial support to its agencies and authorities if it is not obligated
by law to do so.

VALUATION RISK

The lack of an active trading market may make it difficult to obtain an accurate
price for an instrument held by the fund. Many derivative instruments are not
actively traded.

PERFORMANCE SUMMARY

Because the fund is new, no performance information is available as of the date
of this Prospectus.

The fund makes updated performance information available at the fund's website
(www.credit-suisse.com/us/funds) or by calling Credit Suisse Funds at
877-870-2874.

[1] Purchases of shares of $1,000,000 or more may be subject to a 1% deferred sales charge on redemptions within 12 months of purchase.

[2] 1% during the first year.

[1] The fund invests in Credit Suisse Cayman Managed Futures Strategy Fund, Ltd, a wholly-owned subsidiary of the fund organized under the laws of the Cayman Islands (the "Subsidiary"). "Other expenses" have been estimated for the fund's and the Subsidiary's first year of operations.

[2] Credit Suisse Opportunity Funds (the "Trust") and Credit Suisse Asset Management, LLC ("Credit Suisse") have entered into a written contract limiting operating expenses to 1.95% of the fund's average daily net assets for Class A shares, 2.70% of the fund's average daily net assets for Class C shares and 1.70% of the fund's average daily net assets for Class I shares at least through the fund's first year of operations (the fund has not yet begun operations). The Trust is authorized to reimburse Credit Suisse for management fees previously limited and/or for expenses previously paid by Credit Suisse, provided, however, that any reimbursements must be paid at a date not more than three years after the end of the fund's first year of operations and the reimbursements do not cause a class to exceed the applicable expense limitation in the contract at the time the fees were limited or expenses are paid. This contract may not be terminated before the end of the fund's first year of operations.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
ProspectusDate	rr_ProspectusDate	Sep. 25, 2012
Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund
Risk Return [Abstract]	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	CREDIT SUISSE MANAGED FUTURES STRATEGY FUND
Objective [Heading]	rr_ObjectiveHeading	INVESTMENT OBJECTIVE
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	The fund seeks to achieve investment results that correspond generally to the performance, before fees and expenses, of the Credit Suisse Managed Futures Liquid Index.
Expense [Heading]	rr_ExpenseHeading	FEES AND FUND EXPENSES
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The accompanying tables describe the fees and expenses that you may pay if you buy and hold shares of the fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Credit Suisse Funds. More information about these and other discounts is available from your financial representative and in this Prospectus on page 56 under the heading "Other Shareholder Information - Class A and C Shares and Sales Charges" and in the fund's Statement of Additional Information ("SAI") on page 36 under the heading "Additional Purchase and Redemption Information."
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	Shareholder fees (paid directly from your investment)
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Portfolio Turnover [Heading]	rr_PortfolioTurnoverHeading	PORTFOLIO TURNOVER
Portfolio Turnover [Text Block]	rr_PortfolioTurnoverTextBlock	The fund's portfolio turnover rate is expected to be low for regulatory purposes because the computation excludes trades of derivatives and instruments with a maturity of one year or less. However, the fund expects to engage in frequent trading of derivatives, which could have tax consequences that impact shareholders, such as the realization of taxable short-term capital gains. In addition, the fund could incur transaction costs, such as commissions, when it buys and sells securities and other instruments. Transaction costs, which are not reflected in annual fund operating expenses or in the example, affect the fund's performance.
Expense Breakpoint Discounts [Text]	rr_ExpenseBreakpointDiscounts	You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $50,000 in Credit Suisse Funds.
Expense Breakpoint, Minimum Investment Required [Amount]	rr_ExpenseBreakpointMinimumInvestmentRequiredAmount	50,000
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	"Other expenses" have been estimated for the fund's and the Subsidiary's first year of operations.
Expense Example [Heading]	rr_ExpenseExampleHeading	EXAMPLE
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This example may help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Assume you invest $10,000, the fund returns 5% annually, expense ratios remain the same and you close your account at the end of each of the time periods shown. Based on these assumptions, your cost would be:
Strategy [Heading]	rr_StrategyHeading	PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The fund seeks to achieve investment results that correspond generally to the performance, before fees and expenses, of the Credit Suisse Managed Futures Liquid Index (the "Index"). The Index, which was developed and is maintained by Credit Suisse, is designed to provide exposure to both up and down price trends in four broad asset classes: equities, fixed income, commodities and currencies. The Index is currently composed of 14 futures contracts and 4 commodity indices which provide exposure to the asset classes. The Index uses a proprietary quantitative methodology to seek to identify price trends in each of the asset classes over a variety of time horizons. Components of the Index, which may change from time to time, are positioned either long or short based on the price trends within the asset classes determined using the Index's quantitative methodology. The fund seeks to achieve its investment objective by investing directly and/or indirectly through the Subsidiary (as described below) in a combination of securities and derivative instruments that, as a whole, are intended to produce returns, before fees and expenses, that generally track the returns of the Index. The fund's investments may include, but are not limited to, equity index futures, swaps on equity index futures, equity swaps, fixed income futures, swaps on fixed income futures, commodity and commodity index-linked futures, swaps on commodity and commodity index-linked futures, currency futures, swaps on currency futures, currency forwards and equity-, fixed income-, commodity- and currency-linked structured notes and exchange-traded notes ("ETNs"). There are no geographic limits on the fund's holdings and the fund will have exposure to U.S. and non-U.S. securities and currencies. In addition, the fund may have exposure to issuers of any size or credit quality. The fund also invests a significant portion of its assets in investment grade money market instruments, which may include, but are not limited to, U.S. government securities, U.S. government agency securities, short-term fixed income securities, repurchase agreements, money market mutual fund shares, and cash and cash equivalents with one year or less to maturity. The fund's money market instrument holdings serve as collateral for the fund's derivative positions and also earn income for the fund. The fund's return is expected to be derived principally from changes in the value of securities and its portfolio is expected to consist principally of securities. The fund's use of futures, forwards, swaps and certain other financial instruments will have the economic effect of financial leverage. Financial leverage magnifies the exposure to the swings in prices of an asset class underlying a financial instrument and results in increased volatility, which means that the fund will have the potential for greater gains, as well as the potential for greater losses, than if the fund does not use financial instruments that have a leveraging effect. Leveraging tends to magnify, sometimes significantly, the effect of any increase or decrease in the fund's exposure to an asset class and may cause the fund's net asset value ("NAV") to be volatile. A decline in the fund's assets due to losses magnified by the financial instruments providing leveraged exposure may require the fund to liquidate portfolio positions to satisfy its obligations, to meet redemption requests or to meet asset segregation requirements under the Investment Company Act of 1940, as amended (the "1940 Act"), when it may not be advantageous to do so. The fund will enter into short positions in seeking to track the Index, and may use futures and swaps to do so. For example, the fund may enter into a futures contract pursuant to which it agrees to sell an asset (that it does not currently own) at a specified price at a specified point in the future. This gives the fund a short position with respect to the asset. At times, the fund may have significant short positions as a result of the composition of the Index. The fund intends to make investments through the Credit Suisse Cayman Managed Futures Strategy Fund, Ltd, a wholly-owned subsidiary of the fund organized under the laws of the Cayman Islands (the "Subsidiary"), and may invest up to 25% of its total assets in the Subsidiary. The fund will invest in the Subsidiary primarily to gain exposure to the commodities markets within the limitations of the federal tax laws, rules and regulations that apply to registered investment companies. Generally, the Subsidiary will invest in (long and short) commodity-linked futures and swaps, but it may also invest in other types of futures, swaps and options, as well as certain money market instruments, including U.S. government securities, money market fund shares, repurchase agreements and other high-quality, short-term fixed income instruments. The primary purpose of the money market instruments held by the Subsidiary will be to serve as collateral for the Subsidiary's derivative positions; however, these instruments may also earn income for the Subsidiary. The Index is rebalanced on a daily basis. Upon rebalancing, the Index may reposition a component from long to short, or vice versa, based on the prevailing trends of the component's market price identified by the Index's quantitative methodology. The fund generally repositions its portfolio holdings on a daily basis in accordance with the rebalancing of the Index. The percentage of the fund's portfolio exposed to each asset class will vary from time to time as the Index component positions change. In addition, for purposes of efficient portfolio management or to avoid unnecessary costs, the portfolio managers may choose to not include one or more Index components in the fund's portfolio in certain limited circumstances. The fund is "non-diversified," meaning that a relatively high percentage of its assets may be invested in a limited number of issuers of securities.
Risk [Heading]	rr_RiskHeading	PRINCIPAL RISKS OF INVESTING IN THE FUND
Risk Narrative [Text Block]	rr_RiskNarrativeTextBlock	A WORD ABOUT RISK All investments involve some level of risk. Simply defined, risk is the possibility that you will lose money or not make money. Principal risk factors for the fund are discussed below. Before you invest, please make sure you understand the risks that apply to the fund. As with any mutual fund, you could lose money over any period of time. The fund is not a complete investment program and should only form a part of a diversified portfolio. Investors in the fund should be willing to assume the risks of potentially significant short-term share price fluctuations. Investments in the fund are not bank deposits and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. CFTC REGULATION Due to recent Commodity Futures Trading Commission ("CFTC") rule amendments, the disclosures and operations of the fund will need to comply with applicable regulations governing commodity pools, which will increase the fund's regulatory compliance costs. Other potentially adverse regulatory initiatives could develop. COMMODITY EXPOSURE RISKS Exposure to the commodities markets may subject the fund to greater volatility than investments in traditional securities. The value of commodity futures and swaps may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or sectors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and regulatory developments. CONCENTRATION RISK If the Index is or becomes concentrated in a particular industry or group of industries, the fund may invest 25% or more of the value of its total assets in that industry or group of industries to the extent that it is necessary to gain exposure to that industry or group of industries for purposes of tracking the Index. Concentration of investments in a particular industry or group of industries could subject the fund to greater risk of loss and could be considerably more volatile than a broad-based market index or other mutual funds that are diversified across a greater number of industries. CREDIT RISK The issuer of a debt instrument, the borrower of a loan or the counterparty to a contract, including derivatives contracts, may default or otherwise become unable to honor a financial obligation. Changes in an issuer's credit rating or the market's perception of an issuer's creditworthiness also may affect the value of the fund's investment in that issuer. CURRENCY RISK Currency risk is the risk that changes in currency exchange rates will negatively affect securities or instruments denominated in, and/or payments received in, foreign currencies. Adverse changes in currency exchange rates (relative to the U.S. dollar) may erode or reverse any potential gains from the fund's investments in financial instruments with underlying securities or instruments denominated in a foreign currency or may widen existing losses. DERIVATIVES RISK Derivatives are financial contracts whose values depend on, or are derived from, the value of an underlying asset, instrument or index. The fund's use of derivative instruments involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other traditional investments. Derivatives are subject to a number of risks described elsewhere in this Prospectus, such as commodity exposure risks, currency risk, equity risk, fixed income risk, interest rate risk, market risk and credit risk. Also, suitable derivative transactions may not be available in all circumstances. EQUITY RISK Equity security prices have historically risen and fallen in periodic cycles. U.S. and foreign equity markets have experienced periods of substantial price volatility in the past and may do so again in the future. EXCHANGE-TRADED NOTES RISK ETNs are a type of unsecured, unsubordinated debt security that have characteristics and risks similar to those of fixed income securities and trade on a major exchange similar to shares of exchange-traded funds ("ETFs"). However, this type of debt security differs from other types of bonds and notes because ETN returns are based upon the performance of a market index minus applicable fees, no periodic coupon payments are distributed, and no principal protections exist. The purpose of ETNs is to create a type of security that combines the aspects of both bonds and ETFs. The value of an ETN may be influenced by time to maturity, level of supply and demand for the ETN, volatility and lack of liquidity in underlying commodities or securities markets, changes in the applicable interest rates, changes in the issuer's credit rating and economic, legal, political or geographic events that affect the referenced commodity or security.    FIXED INCOME RISK The market value of fixed income investments, and financial instruments related to those fixed income investments, will change in response to interest rate changes and other factors, such as changes in the effective maturities and credit ratings of fixed income investments. During periods of falling interest rates, the values of outstanding fixed income securities and related financial instruments generally rise. Conversely, during periods of rising interest rates, the values of such securities and related financial instruments generally decline. Fixed income investments are also subject to credit risk. FOREIGN SECURITIES RISK A fund that invests outside the U.S. carries additional risks that include: o Currency Risk See "Currency Risk" above. o Information Risk Key information about an issuer, security or market may be inaccurate or unavailable. o Political Risk Foreign governments may expropriate assets, impose capital or currency controls, impose punitive taxes, or nationalize a company or industry. Any of these actions could have a severe effect on security prices and impair the fund's ability to bring its capital or income back to the U.S. Other political risks include economic policy changes, social and political instability, military action and war. FORWARDS RISK Forwards are not exchange-traded and therefore no clearinghouse or exchange stands ready to meet the obligations of the contracts. Thus, the fund faces the risk that its counterparties may not perform their obligations. Forward contracts are not regulated by the CFTC and therefore, the fund will not receive any benefit of CFTC regulation when trading forwards. FUTURES CONTRACTS RISK The risks associated with the fund's use of futures contracts and swaps and structured notes that reference the price of futures contracts include the risk that: (i) changes in the price of a futures contract may not always track the changes in market value of the underlying reference asset; (ii) trading restrictions or limitations may be imposed by an exchange, and government regulations may restrict trading in futures contracts; and (iii) if the fund has insufficient cash to meet margin requirements, the fund may need to sell other investments, including at disadvantageous times. INDEX/TRACKING ERROR RISK Although the fund attempts to track the investment performance of the Index, the fund may not be able to duplicate its exact return. In addition, unlike the fund, the returns of the Index are not reduced by investment and other operating expenses. INTEREST RATE RISK Changes in interest rates may cause a decline in the market value of an investment. With bonds and other debt instruments, a rise in interest rates typically causes a fall in values, while a fall in interest rates typically causes a rise in values. Generally, the longer the maturity or duration of a debt instrument, the greater the impact of a change in interest rates on the instrument's value. LEVERAGING RISK The fund may invest in certain derivatives that provide leveraged exposure. The fund's investment in these instruments generally requires a small investment relative to the amount of investment exposure assumed. As a result, such investments may cause the fund to lose more than the amount it invested in those instruments. The net asset value of the fund when employing leverage will be more volatile and sensitive to market movements. Leverage may involve the creation of a liability that requires the portfolio to pay interest. MARKET RISK The market value of an instrument may fluctuate, sometimes rapidly and unpredictably. These fluctuations, which are often referred to as "volatility," may cause an instrument to be worth less than it was worth at an earlier time. Market risk may affect a single issuer, industry, sector of the economy, or the market as a whole. Market risk is common to most investments - including stocks, bonds and commodities, and the mutual funds that invest in them. MODEL AND STYLE RISK The fund bears the risk that the Index's proprietary quantitative methodology will not be successful in identifying price trends in each of the asset classes to which the Index provides exposure. Further, the Index's proprietary quantitative methodology may incorrectly identify price trends and these misidentified opportunities may lead to substantial losses. In addition, there may be periods when investing based on price trends is out of favor, and during which the investment performance of a fund or index using a trend strategy may underperform funds or indices using other investment approaches. MONEY MARKET FUNDS RISK Investing in money market funds subjects the fund to a pro rata portion of the money market fund's fees and expenses.    NON-DIVERSIFIED STATUS The fund is considered a non-diversified investment company under the 1940 Act, and is permitted to invest a greater proportion of its assets in the securities of a smaller number of issuers. As a result, the fund may be subject to greater volatility with respect to its portfolio securities than a fund that is diversified. PORTFOLIO TURNOVER RISK The fund expects to engage in frequent trading of derivatives. Active and frequent trading may lead to the realization and distribution to shareholders of higher short-term capital gains, which would increase their tax liability. Frequent trading also increases transaction costs, which could detract from the fund's performance. REPURCHASE AGREEMENTS RISK Repurchase agreements could involve certain risks in the event of default or insolvency of the seller, including losses and possible delays or restrictions upon the fund's ability to dispose of the underlying securities. To the extent that, in the meantime, the value of the securities that the fund has purchased has decreased, the fund could experience a loss. The fund will be exposed to the credit of the counterparties to repurchase agreements and their ability to satisfy the terms of the agreements, which exposes the fund to the risk that the counterparties may default on their obligations to perform under the agreements. SHORT POSITION RISK The fund or the Subsidiary may enter into a short position through a futures contract or swap agreement. Taking short positions involves leverage of the fund's or the Subsidiary's assets and presents various risks. If the price of the asset, instrument or market on which the fund or the Subsidiary has taken a short position increases, then the fund or the Subsidiary will incur a loss equal to the increase in price from the time that the short position was entered into plus any premiums and interest paid to a third party. Therefore, taking short positions involves the risk that losses may be exaggerated, potentially losing more money than the actual cost of the investment. The fund's or the Subsidiary's loss on a short sale could theoretically be unlimited in a case where the fund or the Subsidiary, as the case may be, is unable, for whatever reason, to close out its short position. The fund's risk of loss with respect to short sales may be significant, as the fund may have a substantial amount of short positions in its portfolio. SPECULATIVE EXPOSURE RISK Gains or losses from speculative positions in a derivative may be much greater than the derivative's original cost. For example, potential losses from swaps and speculative short sales are unlimited. STRUCTURED NOTE RISK The value of a structured note will be influenced by time to maturity, level of supply and demand for the type of note, interest rate and market volatility, changes in the issuer's credit rating, and economic, legal, political, or geographic events that affect the reference asset. In addition, there may be a lag between a change in the value of the underlying reference asset and the value of the structured note. SUBSIDIARY RISK By investing in the Subsidiary, the fund is indirectly exposed to the risks associated with the Subsidiary's investments. The derivatives and other investments held by the Subsidiary are generally similar to those that are permitted to be held by the fund and are subject to the same risks that apply to similar investments if held directly by the fund. These risks are described elsewhere in this Prospectus. There can be no assurance that the investment objective of the Subsidiary will be achieved. The Subsidiary is not registered under the 1940 Act, and, unless otherwise noted in this Prospectus, is not subject to all the investor protections of the 1940 Act. However, the fund wholly owns and controls the Subsidiary, and the fund and the Subsidiary are both managed by Credit Suisse, making it unlikely that the Subsidiary will take action contrary to the interests of the fund and its shareholders. The fund's Board of Trustees has oversight responsibility for the investment activities of the fund, including its investment in the Subsidiary, and the fund's role as sole shareholder of the Subsidiary. The Subsidiary will be subject to the same investment restrictions and limitations, and follow the same compliance policies and procedures as the fund. Changes in the laws of the United States and/or the Cayman Islands could result in the inability of the fund and/or the Subsidiary to continue to operate as it does currently and could adversely affect the fund. SWAP AGREEMENTS RISK Swap agreements involve the risk that the party with whom the fund has entered into the swap will default on its obligation to pay the fund and the risk that the fund will not be able to meet its obligations to pay the other party to the agreement. TAX RISK In order to qualify as a Regulated Investment Company (a "RIC") under the Internal Revenue Code of 1986, as amended (the "Code"), the fund must meet certain requirements regarding the source of its income, the diversification of its assets and the distribution of its income. The Internal Revenue Service ("IRS") has issued a ruling that income realized from certain types of commodity-linked derivatives would not be qualifying income. As a result, the fund's ability to realize income from investments in such commodity-linked derivatives as part of its investment strategy would be limited to a maximum of 10% of its gross income. If the fund fails to qualify as a RIC, the fund will be subject to federal income tax on its net income at regular corporate rates (without reduction for distributions to shareholders). When distributed, that income also would be taxable to shareholders as an ordinary dividend to the extent attributable to the fund's earnings and profits. If the fund were to fail to qualify as a RIC and became subject to federal income tax, shareholders of the fund would be subject to diminished returns. The IRS has issued private letter rulings to registered investment companies concluding that income derived from their investment in a wholly-owned subsidiary would constitute qualifying income to the fund. The IRS has indicated that the granting of these types of private letter rulings is currently suspended, pending further internal discussion. As a result, the fund has not received and there can be no assurance that the IRS will grant, such a private letter ruling to the fund. If the fund does not request and receive such a private letter ruling, there is a risk that the IRS could assert that the income derived from the fund's investment in the Subsidiary will not be considered qualifying income for purposes of the fund remaining qualified as a RIC for U.S. federal income tax purposes. U.S. GOVERNMENT SECURITIES RISK Obligations of U.S. government agencies and authorities are supported by varying degrees of credit but generally are not backed by the full faith and credit of the U.S. government. No assurance can be given that the U.S. government will provide financial support to its agencies and authorities if it is not obligated by law to do so. VALUATION RISK The lack of an active trading market may make it difficult to obtain an accurate price for an instrument held by the fund. Many derivative instruments are not actively traded.
Risk Lose Money [Text]	rr_RiskLoseMoney	Simply defined, risk is the possibility that you will lose money or not make money.
Risk Nondiversified Status [Text]	rr_RiskNondiversifiedStatus	The fund is considered a non-diversified investment company under the 1940 Act, and is permitted to invest a greater proportion of its assets in the securities of a smaller number of issuers. As a result, the fund may be subject to greater volatility with respect to its portfolio securities than a fund that is diversified.
Risk Not Insured Depository Institution [Text]	rr_RiskNotInsuredDepositoryInstitution	Investments in the fund are not bank deposits and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	PERFORMANCE SUMMARY
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	Because the fund is new, no performance information is available as of the date of this Prospectus. The fund makes updated performance information available at the fund's website (www.credit-suisse.com/us/funds) or by calling Credit Suisse Funds at 877-870-2874.
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	Because the fund is new, no performance information is available as of the date of this Prospectus.
Performance Availability Phone [Text]	rr_PerformanceAvailabilityPhone	877-870-2874
Performance Availability Website Address [Text]	rr_PerformanceAvailabilityWebSiteAddress	www.credit-suisse.com/us/funds
Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund | Class A
Risk Return [Abstract]	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	5.25%
Maximum deferred sales charge (load) (as a percentage of the lesser of original purchase price or redemption proceeds, as applicable)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none	[1]
Maximum sales charge (load) on reinvested distributions (as a percentage of offering price)	rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther	none
Redemption or exchange fees (as a percentage of net asset value on date of redemption or exchange) (for shares redeemed or exchanged within 30 days from the date of purchase)	rr_RedemptionFeeOverRedemption	(2.00%)
Management fee	rr_ManagementFeesOverAssets	1.15%
Distribution and service (12b-1) fee	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other expenses of the fund	rr_Component1OtherExpensesOverAssets	0.91%	[2]
Other expenses of the subsidiary	rr_Component2OtherExpensesOverAssets	0.05%	[2]
Total annual fund operating expenses	rr_ExpensesOverAssets	2.36%
Less: amount of fee limitations/expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.41%)	[3]
Total annual fund operating expenses after fee limitations/expense reimbursements	rr_NetExpensesOverAssets	1.95%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	713
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	1,186
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	713
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	1,186
Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund | Class C
Risk Return [Abstract]	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a percentage of the lesser of original purchase price or redemption proceeds, as applicable)	rr_MaximumDeferredSalesChargeOverOfferingPrice	1.00%	[4]
Maximum sales charge (load) on reinvested distributions (as a percentage of offering price)	rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther	none
Redemption or exchange fees (as a percentage of net asset value on date of redemption or exchange) (for shares redeemed or exchanged within 30 days from the date of purchase)	rr_RedemptionFeeOverRedemption	(2.00%)
Management fee	rr_ManagementFeesOverAssets	1.15%
Distribution and service (12b-1) fee	rr_DistributionAndService12b1FeesOverAssets	1.00%
Other expenses of the fund	rr_Component1OtherExpensesOverAssets	0.91%	[2]
Other expenses of the subsidiary	rr_Component2OtherExpensesOverAssets	0.05%	[2]
Total annual fund operating expenses	rr_ExpensesOverAssets	3.11%
Less: amount of fee limitations/expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.41%)	[3]
Total annual fund operating expenses after fee limitations/expense reimbursements	rr_NetExpensesOverAssets	2.70%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	373
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	921
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	273
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	921
Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund | Class I
Risk Return [Abstract]	rr_RiskReturnAbstract
Maximum sales charge (load) imposed on purchases (as a percentage of offering price)	rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice	none
Maximum deferred sales charge (load) (as a percentage of the lesser of original purchase price or redemption proceeds, as applicable)	rr_MaximumDeferredSalesChargeOverOfferingPrice	none
Maximum sales charge (load) on reinvested distributions (as a percentage of offering price)	rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther	none
Redemption or exchange fees (as a percentage of net asset value on date of redemption or exchange) (for shares redeemed or exchanged within 30 days from the date of purchase)	rr_RedemptionFeeOverRedemption	(2.00%)
Management fee	rr_ManagementFeesOverAssets	1.15%
Distribution and service (12b-1) fee	rr_DistributionAndService12b1FeesOverAssets	none
Other expenses of the fund	rr_Component1OtherExpensesOverAssets	0.91%	[2]
Other expenses of the subsidiary	rr_Component2OtherExpensesOverAssets	0.05%	[2]
Total annual fund operating expenses	rr_ExpensesOverAssets	2.11%
Less: amount of fee limitations/expense reimbursements	rr_FeeWaiverOrReimbursementOverAssets	(0.41%)	[3]
Total annual fund operating expenses after fee limitations/expense reimbursements	rr_NetExpensesOverAssets	1.70%
Expense Example, with Redemption, 1 Year	rr_ExpenseExampleYear01	173
Expense Example, with Redemption, 3 Years	rr_ExpenseExampleYear03	621
Expense Example, No Redemption, 1 Year	rr_ExpenseExampleNoRedemptionYear01	173
Expense Example, No Redemption, 3 Years	rr_ExpenseExampleNoRedemptionYear03	621

[1] Purchases of shares of $1,000,000 or more may be subject to a 1% deferred sales charge on redemptions within 12 months of purchase.

[2] The fund invests in Credit Suisse Cayman Managed Futures Strategy Fund, Ltd, a wholly-owned subsidiary of the fund organized under the laws of the Cayman Islands (the "Subsidiary"). "Other expenses" have been estimated for the fund's and the Subsidiary's first year of operations.

[3] Credit Suisse Opportunity Funds (the "Trust") and Credit Suisse Asset Management, LLC ("Credit Suisse") have entered into a written contract limiting operating expenses to 1.95% of the fund's average daily net assets for Class A shares, 2.70% of the fund's average daily net assets for Class C shares and 1.70% of the fund's average daily net assets for Class I shares at least through the fund's first year of operations (the fund has not yet begun operations). The Trust is authorized to reimburse Credit Suisse for management fees previously limited and/or for expenses previously paid by Credit Suisse, provided, however, that any reimbursements must be paid at a date not more than three years after the end of the fund's first year of operations and the reimbursements do not cause a class to exceed the applicable expense limitation in the contract at the time the fees were limited or expenses are paid. This contract may not be terminated before the end of the fund's first year of operations.

[4] 1% during the first year.

XML

Label	Element	Value
Risk Return [Abstract]	rr_RiskReturnAbstract
Document Type	dei_DocumentType	Other
Document Period End Date	dei_DocumentPeriodEndDate	Oct. 01, 2012
Registrant Name	dei_EntityRegistrantName	CREDIT SUISSE OPPORTUNITY FUNDS
Central Index Key	dei_EntityCentralIndexKey	0000946110
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Oct. 01, 2012
Document Effective Date	dei_DocumentEffectiveDate	Oct. 01, 2012
Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund | Class A
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	CSAAX
Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund | Class C
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	CSACX
Credit Suisse Managed Futures Strategy Fund (Prospectus Summary) | Credit Suisse Managed Futures Strategy Fund | Class I
Risk Return [Abstract]	rr_RiskReturnAbstract
Trading Symbol	dei_TradingSymbol	CSAIX