0000804887
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
ck0000804887:C000000160Member
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
ck0000804887:C000136230Member
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
ck0000804887:C000136231Member
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
ck0000804887:C000136232Member
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
rr:AfterTaxesOnDistributionsMember
ck0000804887:C000000160Member
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
rr:AfterTaxesOnDistributionsAndSalesMember
ck0000804887:C000000160Member
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
ck0000804887:index_BofAMerrill_Lynch_1Year_US_Treasury_Note_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember
2013-11-30
2013-11-30
0000804887
ck0000804887:S000000097Member
ck0000804887:index_BofAMerrill_Lynch_Governments_US_Treasury_ShortTerm_13_Years_Index_reflects_no_deduction_for_fees_expenses_or_taxesMember
2013-11-30
2013-11-30
xbrli:pure
iso4217:USD
Management fees and Total annual fund operating expenses for Class Z have been restated from the previous fiscal year to reflect a decrease in the contractual management fee payable by the fund, effective November 15, 2013, from .50% to .25% of the value of the fund's average daily net assets.
The fund's investment advisor, the Dreyfus Corporation, has contractually agreed, until April 1, 2015, to waive receipt of its fees and/or assume the direct expenses of the fund so that the expenses of none of the classes (excluding Rule 12b-1 fees, shareholder services fees, taxes, interest, brokerage commissions, commitment fees on borrowings and extraordinary expenses) exceed .35%. On or after April 1, 2015, The Dreyfus Corporation may terminate this expense limitation at any time.
DREYFUS SHORT DURATION BOND FUND
485BPOS
false
0000804887
2013-11-30
2014-03-27
2014-04-01
2014-04-01
Fund Summary
DSIGX
DSDDX
DSIDX
DSYDX
Principal Risks
<p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">An investment in the fund is not a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. It is not a complete investment program. The fund's share price fluctuates, sometimes dramatically, which means you could lose money.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Interest rate risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">Prices of bonds tend to move inversely with changes in interest rates. Typically, a rise in rates will adversely affect bond prices and, accordingly, the fund's share price. The longer the effective maturity and duration of the fund's fixed-income portfolio, the more the fund's share price is likely to react to interest rates. For example, the market price of a fixed-income security with a duration of three years would be expected to decline 3% if interest rates rose 1%. Conversely, the market price of the same security would be expected to increase 3% if interest rates fell 1%.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Credit risk</font></i></font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">. Failure of an issuer to make timely interest or principal payments, or a decline or perception of a decline in the credit quality of a bond, can cause the bond's price to fall, potentially lowering the fund's share price. The lower a bond's credit rating, the greater the chance – in the rating agency's opinion – that the bond issuer will default or fail to meet its payment obligations.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Government securities risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">Not all obligations of the U.S. government, its agencies and instrumentalities are backed by the full faith and credit of the U.S. Treasury. 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. Any guarantee by the U.S. government or its agencies or instrumentalities of a security held by the fund does not apply to the market value of such security or to shares of the fund itself. A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. In addition, because many types of U.S. government securities trade actively outside the United States, their prices may rise and fall as changes in global economic conditions affect the demand for these securities.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Market risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The market value of a security may decline due to general market conditions that are not related to the particular company, such as real or perceived adverse economic conditions, changes in the outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. A security's market value also may decline because of factors that affect the particular company, such as management performance, financial leverage, and reduced demand for the company's products or services, or factors that affect the company's industry, such as labor shortages or increased production costs and competitive conditions within an industry.</font> </p> <br/><p style="text-align: left; text-indent: -8.65pt; margin-left: 8.65pt;"> <font><font style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol; color: #000000;">·</font></font><font><font style="word-spacing: 10pt;"><font style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol; color: #000000;"> </font></font></font><font><em><font style="font-size: 10pt; font-weight: normal; color: #000000;">Mortgage-related securities risk.</font></em></font> <font style="font-style: normal; font-size: 10pt; font-weight: normal; color: #000000;">Mortgage-related securities are complex derivative instruments, subject to credit, prepayment and extension risk, and may be more volatile and less liquid, and more difficult to price accurately, than more traditional debt securities. The fund is subject to the credit risk associated with these securities, including the market's perception of the creditworthiness of the issuing federal agency, as well as the credit quality of the underlying assets. Although certain mortgage-related securities are guaranteed as to the timely payment of interest and principal by a third party (such as a U.S. government agency or instrumentality with respect to government-related mortgage-backed securities) the market prices for such securities are not guaranteed and will fluctuate. Declining interest rates may result in the prepayment of higher yielding underlying mortgages and the reinvestment of proceeds at lower interest rates can reduce the fund's potential price gain in response to falling interest rates, reduce the fund's yield or cause the fund's share price to fall (prepayment risk). Rising interest rates may result in a drop in prepayments of the <font style="font-style: normal; font-size: 10pt; font-weight: normal; color: #000000;">underlying mortgages, which would increase the fund's sensitivity to rising interest rates and its potential for price declines (extension risk).</font></font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Municipal securities risk</font></i></font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">. The amount of public information available about municipal securities is generally less than that for corporate equities or bonds. Special factors, such as legislative changes, and state and local economic and business developments, may adversely affect the yield and/or value of the fund's investments in municipal securities. Other factors include the general conditions of the municipal securities market, the size of the particular offering, the maturity of the obligation and the rating of the issue. Changes in economic, business or political conditions relating to a particular municipal project, municipality, or state, territory or possession of the United States in which the fund invests may have an impact on the fund's share price.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Foreign investment risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">To the extent the fund invests in foreign securities, the fund's performance will be influenced by political, social and economic factors affecting investments in foreign issuers. Special risks associated with investments in foreign issuers include exposure to currency fluctuations, less liquidity, less developed or less efficient trading markets, lack of comprehensive company information, political and economic instability and differing auditing and legal standards. Investments denominated in foreign currencies are subject to the risk that such currencies will decline in value relative to the U.S. dollar and affect the value of these investments held by the fund. Securities of issuers located in emerging markets can be more volatile and less liquid than those of issuers in more developed economies.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Asset-backed securities risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">General downturns in the economy could cause the value of asset-backed securities to fall. In addition, asset-backed securities present certain risks that are not presented by mortgage-backed securities. Primarily, these securities may provide the fund with a less effective security interest in the related collateral than do mortgage-backed securities. Therefore, there is the possibility that recoveries on the underlying collateral may not, in some cases, be available to support payments on these securities.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Inflation-indexed security risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">Interest payments on inflation-indexed securities can be unpredictable and will vary as the principal and/or interest is periodically adjusted based on the rate of inflation. If the index measuring inflation falls, the interest payable on these securities will be reduced. The U.S. Treasury has guaranteed that in the event of a drop in prices, it would repay the par amount of its inflation-indexed securities. Inflation-indexed securities issued by corporations generally do not guarantee repayment of principal. Any increase in the principal amount of an inflation-indexed security will be considered taxable ordinary income, even though investors do not receive their principal until maturity. As a result, the fund may be required to make annual distributions to shareholders that exceed the cash the fund received, which may cause the fund to liquidate certain investments when it is not advantageous to do so. Also, if the principal value of an inflation-indexed security is adjusted downward due to deflation, amounts previously distributed may be characterized in some circumstances as a return of capital.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Zero coupon, pay-in-kind and step-up securities risk</font></i></font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">. Zero coupon securities are debt securities issued or sold at a discount from their face value that do not entitle the holder to any periodic payment of interest prior to maturity or a specified redemption date (or cash payment date). Pay-in-kind securities are bonds that generally pay interest through the issuance of additional bonds. Step-up coupon bonds are debt securities that typically do not pay interest for a specified period of time and then pay interest at a series of different rates. The market prices of these securities generally are more volatile and are likely to respond to a greater degree to changes in interest rates than the market prices of securities that pay cash interest periodically having similar maturities and credit qualities. In addition, unlike bonds which pay cash interest throughout the period to maturity, the fund will realize no cash until the cash payment or maturity date unless a portion of such securities are sold and, if the issuer defaults, the fund may obtain no return at all on its investment. The Internal Revenue Code requires the holder of a zero coupon security or of certain pay-in-kind or step-up bonds to accrue income with respect to these securities prior to the receipt of cash payments. To maintain its qualification as a regulated investment company and avoid liability for Federal income tax, the fund may be required to distribute such income accrued with respect to these securities and may have to dispose of portfolio securities under disadvantageous circumstances in order to generate cash to satisfy this distribution requirement.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Liquidity risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">When there is little or no active trading market for specific types of securities, it can become more difficult to sell the securities in a timely manner at or near their perceived value. In such a market, the value of such securities and the fund's share price may fall dramatically. Investments in foreign securities tend to have greater exposure to liquidity risk than domestic securities.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Derivatives risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">A small investment in derivatives could have a potentially large impact on the fund's performance. The use of derivatives involves risks different from, or possibly greater than, the risks associated with investing directly in the underlying assets. Derivatives can be highly volatile, illiquid and difficult to value. Certain types of derivatives, including swaps, forward contracts and other over-the-counter transactions, involve greater risks than the underlying obligations because, in addition to general market risks, they are subject to illiquidity risk, counterparty risk, credit risk and pricing risk.</font> </p> <br/><p style="TEXT-ALIGN: left; TEXT-INDENT: -8.65pt; MARGIN-LEFT: 8.65pt"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;">·</font></font><font><font style="WORD-SPACING: 10pt"><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: symbol;"> </font></font></font><font><i><font color="#000000" style="font-size: 10pt; font-weight: normal; font-family: ;">Portfolio turnover risk.</font></i></font> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The fund may engage in short-term trading, which could produce higher transaction costs and taxable distributions, and lower the fund's after-tax performance.</font> </p>
An investment in the fund is not a bank deposit. It is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency.
The fund's share price fluctuates, sometimes dramatically, which means you could lose money.
Investment Objective
<p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The fund seeks to maximize total return, consisting of capital appreciation and current income.</font> </p>
Principal Investment Strategy
<p style="text-align: left;"> <font style="font-style: normal; font-size: 10pt; font-weight: normal; color: #000000;">To pursue its goal, the fund normally invests at least 80% of its net assets, plus any borrowings for investment purposes, in bonds (or other instruments with similar economic characteristics). The fund's bond investments may include, but are not limited to, the following: bonds issued or guaranteed by the U.S. government or its agencies or instrumentalities, government and private mortgage-related securities, corporate bonds, municipal bonds, bonds of foreign governments and companies (limited to up to 30% of the fund's assets in the aggregate, up to 5% in non-U.S. dollar-denominated bonds and up to 5% in emerging market bonds), asset-backed securities, inflation-indexed securities, and zero coupon, <font style="font-style: normal; font-size: 10pt; font-weight: normal; color: #000000;">pay-in-kind and step-up securities. The fund invests principally in bonds rated investment grade (i.e., Baa/BBB or higher) at the time of purchase or, if unrated, deemed of comparable quality by The Dreyfus Corporation.</font><br/> </font> </p> <br/><p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The fund's portfolio managers buy and sell fixed-income securities based on credit quality, financial outlook and yield potential. Generally, fixed-income securities with deteriorating credit quality are potential sell candidates, while those offering higher yields are potential buy candidates.</font> </p> <br/><p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The fund generally maintains an effective duration of one year or less. The fund may invest in individual bonds of any duration. Duration is an estimate of the sensitivity of the price (the value of the principal) of a fixed-income security to a change in interest rates. There are no restrictions on the dollar-weighted average maturity of the fund's portfolio or on the maturities of the individual bonds the fund may purchase.</font> </p> <br/><p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The fund may, but is not required to, use derivative instruments, such as options, futures and options on futures (including those relating to securities, foreign currencies, indexes and interest rates), forward contracts, swaps (including interest rate and credit default swaps), options on swaps, and other credit derivatives, as a substitute for investing directly in an underlying asset, to increase returns, to manage interest rate risk, to manage the effective duration or maturity of the fund's portfolio, or as part of a hedging strategy. To the extent that the fund invests in derivative instruments with economic characteristics similar to bonds, the value of such investments will be included for purposes of the fund's 80% investment policy.</font> </p>
Performance
<p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the performance of the fund's Class Z shares from year to year. The table compares the average annual total returns of the fund's shares to those of a broad measure of market performance. The fund's past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. Sales charges, if any, are not reflected in the bar chart, and if those charges were included, returns would have been less than those shown. More recent performance information may be available at</font> <font><u><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">www.dreyfus.com</font></u></font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">.</font> </p> <br/><p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The fund changed its investment strategy on November 15, 2013. Prior to that date, the fund normally invested at least 80% of its net assets in securities issued or guaranteed by the U.S. government or its agencies or instrumentalities, and in repurchase agreements collateralized by such securities, including up to 35% of its assets in mortgage-related securities issued by U.S. government agencies or instrumentalities, and generally maintained an effective duration of approximately three years or less. Different investment strategies may lead to different performance results. The fund's performance for periods prior to November 15, 2013 reflects the fund's investment strategy in effect prior to that date.</font> </p>
Year-by-Year Total Returns as of 12/31 each year (%) Class Z
0.0038
0.0160
0.0356
0.0563
0.0657
0.0181
0.0155
0.0088
-0.0010
0.0005
~ http://dreyfus.com/20140327/role/ScheduleAnnualTotalReturnsBarChart20003 column dei_LegalEntityAxis compact ck0000804887_S000000097Member column rr_ProspectusShareClassAxis compact ck0000804887_C000000160Member row primary compact * ~
Best Quarter
0.0309
2008-12-31
Worst Quarter
-0.0118
2004-06-30
<p style="text-align: left; margin-left: 4pt;"> <font><strong><font style="font-style: normal; font-size: 10pt;">Best Quarter</font></strong></font><font style="font-style: normal; font-size: 10pt; font-weight: normal;"><br/> Q4, 2008: 3.09%</font> </p> <br/><p style="text-align: left; margin-left: 4pt;"> <font><strong><font style="font-style: normal; font-size: 10pt;">Worst Quarter</font></strong></font><font style="font-style: normal; font-size: 10pt; font-weight: normal;"><br/> Q2, 2004: -1.18%</font> </p>
<p style="TEXT-ALIGN: left"> <font><font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">After-tax performance is shown only for Class Z shares. After-tax performance of the fund's other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes. Actual after-tax returns depend on the investor's tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.</font></font> </p> <br/><p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">As of November 15, 2013, the fund changed its benchmark to the BofA/Merrill Lynch 1-Year U.S. Treasury Note Index, from the BofA/Merrill Lynch Governments, U.S. Treasury, Short-Term (1-3 Years) Index, because the BofA/Merrill Lynch 1-Year U.S. Treasury Note Index is more reflective of the manner in which the fund's assets are invested, based on changes to the fund's investment strategy which took effect as of the same date.</font> </p> <br/><p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">For the fund's Class D, I and Y Shares periods prior to 11/15/13, reflect the performance of the fund's Class Z shares. Such performance figures have not been adjusted, however, to reflect applicable class fees and expenses; if such fees and expenses had been reflected, the performance shown for Class D for such periods may have been lower.</font> </p>
0.0005
0.0083
0.0217
-0.0026
0.0033
0.0130
0.0003
0.0042
0.0134
-0.0006
0.0081
0.0216
-0.0003
0.0082
0.0216
-0.0003
0.0082
0.0216
0.0026
0.0054
0.0207
0.0036
0.0109
0.0257
2013-11-15
2013-11-15
2013-11-15
1987-04-06
~ http://dreyfus.com/20140327/role/ScheduleAverageAnnualReturnsTransposed20004 column dei_LegalEntityAxis compact ck0000804887_S000000097Member column rr_PerformanceMeasureAxis compact * row primary compact * ~
Sales charges, if any, are not reflected in the bar chart, and if those charges were included, returns would have been less than those shown.
www.dreyfus.com
After-tax performance is shown only for Class Z shares. After-tax performance of the fund's other share classes will vary.
Actual after-tax returns depend on the investor's tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their shares through tax-deferred arrangements such as 401(k) plans or individual retirement accounts.
As of November 15, 2013, the fund changed its benchmark to the BofA/Merrill Lynch 1-Year U.S. Treasury Note Index, from the BofA/Merrill Lynch Governments, U.S. Treasury, Short-Term (1-3 Years) Index, because the BofA/Merrill Lynch 1-Year U.S. Treasury Note Index is more reflective of the manner in which the fund's assets are invested, based on changes to the fund's investment strategy which took effect as of the same date.
Average Annual Total Returns (as of 12/31/13)
The fund's past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future.
After-tax returns are calculated using the historical highest individual federal marginal income tax rates, and do not reflect the impact of state and local taxes.
The following bar chart and table provide some indication of the risks of investing in the fund.
Example
<p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The Example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the fund's operating expenses remain the same. The one-year example and the first year of the three-, five- and ten-years examples are based on net operating expenses, which reflect the expense limitation by The Dreyfus Corporation. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</font> </p>
61
233
420
960
36
132
237
546
36
123
219
500
45
189
346
802
~ http://dreyfus.com/20140327/role/ScheduleExpenseExampleTransposed20002 column dei_LegalEntityAxis compact ck0000804887_S000000097Member row primary compact * ~
Portfolio Turnover
<p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 186.54% of the average value of its portfolio.</font> </p>
1.8654
Fees and Expenses
<p style="TEXT-ALIGN: left"> <font color="#000000" style="font-style: normal; font-size: 10pt; font-weight: normal; font-family: ;">This table describes the fees and expenses that you may pay if you buy and hold shares of the fund.</font> </p>
0.0025
0.0025
0.0025
0.0025
0.0025
0.0000
0.0000
0.0000
0.0029
0.0019
0.0015
0.0041
0.0079
0.0044
0.0040
0.0066
-0.0019
-0.0009
-0.0005
-0.0022
0.0060
0.0035
0.0035
0.0044
~ http://dreyfus.com/20140327/role/ScheduleAnnualFundOperatingExpenses20001 column dei_LegalEntityAxis compact ck0000804887_S000000097Member row primary compact * ~
Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
2015-04-01
Management fees and Total annual fund operating expenses for Class Z have been restated from the previous fiscal year to reflect a decrease in the contractual management fee payable by the fund, effective November 15, 2013, from .50% to .25% of the value of the fund's average daily net assets.