| Label |
Element |
Value |
| Risk/Return: |
rr_RiskReturnAbstract |
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| Registrant Name |
dei_EntityRegistrantName |
BlackRock Funds VI
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| Prospectus Date |
rr_ProspectusDate |
Jul. 02, 2018
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| Investor A, C and Institutional | BlackRock CoreAlpha Bond Fund |
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| Risk/Return: |
rr_RiskReturnAbstract |
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| Risk/Return [Heading] |
rr_RiskReturnHeading |
Fund Overview
Key Facts About BlackRock CoreAlpha Bond Fund
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| Objective [Heading] |
rr_ObjectiveHeading |
Investment Objective
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| Objective, Primary [Text Block] |
rr_ObjectivePrimaryTextBlock |
BlackRock CoreAlpha Bond Fund (the “Fund”), a series of BlackRock Funds VI (the “Trust”), seeks to provide a combination of income and capital growth.
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| Expense [Heading] |
rr_ExpenseHeading |
Fees and Expenses of the Fund
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| Expense Narrative [Text Block] |
rr_ExpenseNarrativeTextBlock |
This table describes 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 $25,000 in the fund complex advised by BlackRock Advisors, LLC (“BlackRock”) or its affiliates. More information about these and other discounts is available from your financial professional or your selected securities dealer, broker, investment adviser, service provider or industry professional (including BlackRock, The PNC Financial Services Group, Inc. and their respective affiliates) (each a “Financial Intermediary”) and in the “Details About the Share Classes” and the “Intermediary-Defined Sales Charge Waiver Policies” sections on pages 25 and A-1, respectively, of the Fund’s prospectus and in the “Purchase of Shares” section on page II-74 of Part II of the Fund’s Statement of Additional Information.
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| Shareholder Fees Caption [Text] |
rr_ShareholderFeesCaption |
Shareholder Fees
(fees paid directly from your investment)
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| 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)
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| Fee Waiver or Reimbursement over Assets, Date of Termination |
rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination |
May 1, 2020
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| Portfolio Turnover [Heading] |
rr_PortfolioTurnoverHeading |
Portfolio Turnover:
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| Portfolio Turnover [Text Block] |
rr_PortfolioTurnoverTextBlock |
The Master Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when 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.
The Fund has not commenced operations as of the date of this prospectus, but it is expected that BlackRock CoreAlpha Bond Fund, a series of BlackRock Funds III (the “Predecessor Fund”), which invests all of its assets in CoreAlpha Bond Master Portfolio, a series of Master Investment Portfolio (the “Predecessor Master Portfolio”), will be reorganized into the Fund.
During the most recent fiscal year, the Predecessor Master Portfolio’s portfolio turnover rate was 515% of the average value of its portfolio.
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| Portfolio Turnover, Rate |
rr_PortfolioTurnoverRate |
515.00%
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| Expenses Deferred Charges [Text Block] |
rr_ExpensesDeferredChargesTextBlock |
A contingent deferred sales charge (“CDSC”) of 0.75% is assessed on certain redemptions of Investor A Shares made within 18 months after purchase where no initial sales charge was paid at time of purchase as part of an investment of $1,000,000 or more.
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| 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 $25,000 in the fund complex advised by BlackRock Advisors, LLC (“BlackRock”) or its affiliates.
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| Expense Breakpoint, Minimum Investment Required [Amount] |
rr_ExpenseBreakpointMinimumInvestmentRequiredAmount |
$ 25,000
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| Expenses Represent Both Master and Feeder [Text] |
rr_ExpensesRepresentBothMasterAndFeeder |
The fees and expenses shown in the table above and the example that follows include the expenses of both the Fund and the Fund’s share of the allocated expenses of CoreAlpha Bond Master Portfolio (the “Master Portfolio”), a series of Master Investment Portfolio II (“MIP II”). Management fees are paid by the Master Portfolio.
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| Other Expenses, New Fund, Based on Estimates [Text] |
rr_OtherExpensesNewFundBasedOnEstimates |
Other Expenses and Acquired Fund Fees and Expenses are based on estimated amounts for the current fiscal year, which are based on the expenses of the Predecessor Fund (as defined below) for its most recent fiscal year.
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| Acquired Fund Fees and Expenses, Based on Estimates [Text] |
rr_AcquiredFundFeesAndExpensesBasedOnEstimates |
Acquired Fund Fees and Expenses are based on estimated amounts for the current fiscal year, which are based on the expenses of the Predecessor Fund (as defined below) for its most recent fiscal year.
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| Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] |
rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees |
The Total Annual Fund Operating Expenses do not correlate to the ratios of expenses to average net assets given in the Predecessor Fund’s most recent annual report, which do not include Acquired Fund Fees and Expenses.
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| Expense Example [Heading] |
rr_ExpenseExampleHeading |
Example:
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| Expense Example Narrative [Text Block] |
rr_ExpenseExampleNarrativeTextBlock |
This 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. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
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| Expense Example, No Redemption, By Year, Caption [Text] |
rr_ExpenseExampleNoRedemptionByYearCaption |
You would pay the following expenses if you did not redeem your shares:
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| Strategy [Heading] |
rr_StrategyHeading |
Principal Investment Strategies of the Fund
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| Strategy Narrative [Text Block] |
rr_StrategyNarrativeTextBlock |
The Fund invests, under normal circumstances, at least 80% of the value of the Fund’s net assets, plus the amount of any borrowing for investment purposes, in bonds. For the purposes of this strategy, “bonds” include the following: obligations issued or guaranteed by the U.S. Government, its agencies or instrumentalities; mortgage-backed securities issued or guaranteed by the U.S. Government or its agencies or instrumentalities, including U.S. agency mortgage pass-through securities; commercial mortgage-backed securities; debt obligations of U.S. issuers; municipal securities; asset-backed securities; and U.S.-registered dollar-denominated debt obligations of foreign issuers. The Fund may invest in bonds issued by companies located in countries other than the United States, including companies in emerging markets. These securities may have all types of interest rate payment and reset terms, including fixed rate, adjustable rate, floating rate, zero coupon, contingent, deferred, payment in kind and auction rate features. The Fund seeks to invest a substantial portion of its assets in U.S.-registered, dollar-denominated bonds. The Fund may invest up to 10% of its assets in securities rated below investment grade or which are deemed to be of comparable quality by BlackRock (“high yield” or “junk” bonds) at the time of purchase. Investment grade bonds are bonds rated in the four highest categories by at least one of the major rating agencies or determined by Fund management to be of similar quality. The Fund may invest in bonds of any maturity or duration.
The Fund may invest a significant portion of its assets in U.S. agency mortgage pass-through securities, which are securities issued by entities such as the Government National Mortgage Association and the Federal National Mortgage Association that are backed by pools of mortgages. Most transactions in mortgage pass-through securities occur through standardized contracts for future delivery in which the exact mortgage-backed securities to be delivered are not specified until a few days prior to settlement. The Fund expects to enter into such contracts on a regular basis.
The Fund may use derivatives, such as futures contracts, options and various other instruments. The Fund may also invest in derivatives based on foreign currencies. In addition, the Fund may use derivatives and short sales to enhance returns as part of an overall investment strategy or to offset a potential decline in the value of other holdings (commonly referred to as a “hedge”), although the Fund is not required to hedge and may choose not to do so.
The Fund is a “feeder” fund that invests all of its assets in the Master Portfolio, which has the same investment objective and strategies as the Fund. All investments are made at the Master Portfolio level. This structure is sometimes called a “master/feeder” structure. The Fund’s investment results will correspond directly to the investment results of the Master Portfolio. For simplicity, the prospectus uses the name of the Fund or the term “Fund” (as applicable) to include the Master Portfolio.
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| Risk [Heading] |
rr_RiskHeading |
Principal Risks of Investing in the Fund
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| Risk Narrative [Text Block] |
rr_RiskNarrativeTextBlock |
Risk is inherent in all investing. The value of your investment in the Fund, as well as the amount of return you receive on your investment, may fluctuate significantly from day to day and over time. You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments. The following is a summary description of the principal risks of investing in the Fund. - Debt Securities Risk — Debt securities, such as bonds, involve interest rate risk, credit risk, extension risk, and prepayment risk, among other things.
Interest Rate Risk — The market value of bonds and other fixed-income securities changes in response to interest rate changes and other factors. Interest rate risk is the risk that prices of bonds and other fixed-income securities will increase as interest rates fall and decrease as interest rates rise.
The Fund may be subject to a greater risk of rising interest rates due to the current period of historically low rates. For example, if interest rates increase by 1%, assuming a current portfolio duration of ten years, and all other factors being equal, the value of the Fund’s investments would be expected to decrease by 10%. The magnitude of these fluctuations in the market price of bonds and other fixed-income securities is generally greater for those securities with longer maturities. Fluctuations in the market price of the Fund’s investments will not affect interest income derived from instruments already owned by the Fund, but will be reflected in the Fund’s net asset value. The Fund may lose money if short-term or long-term interest rates rise sharply in a manner not anticipated by Fund management.
To the extent the Fund invests in debt securities that may be prepaid at the option of the obligor (such as mortgage-backed securities), the sensitivity of such securities to changes in interest rates may increase (to the detriment of the Fund) when interest rates rise. Moreover, because rates on certain floating rate debt securities typically reset only periodically, changes in prevailing interest rates (and particularly sudden and significant changes) can be expected to cause some fluctuations in the net asset value of the Fund to the extent that it invests in floating rate debt securities.
These basic principles of bond prices also apply to U.S. Government securities. A security backed by the “full faith and credit” of the U.S. Government is guaranteed only as to its stated interest rate and face value at maturity, not its current market price. Just like other fixed-income securities, government-guaranteed securities will fluctuate in value when interest rates change.
A general rise in interest rates has the potential to cause investors to move out of fixed-income securities on a large scale, which may increase redemptions from funds that hold large amounts of fixed-income securities. Heavy redemptions could cause the Fund to sell assets at inopportune times or at a loss or depressed value and could hurt the Fund’s performance.
Credit Risk — Credit risk refers to the possibility that the issuer of a debt security (i.e., the borrower) will not be able to make payments of interest and principal when due. Changes in an issuer’s credit rating or the market’s perception of an issuer’s creditworthiness may also affect the value of the Fund’s investment in that issuer. The degree of credit risk depends on both the financial condition of the issuer and the terms of the obligation.
Extension Risk — When interest rates rise, certain obligations will be paid off by the obligor more slowly than anticipated, causing the value of these obligations to fall.
Prepayment Risk — When interest rates fall, certain obligations will be paid off by the obligor more quickly than originally anticipated, and the Fund may have to invest the proceeds in securities with lower yields.
- Derivatives Risk — The Fund’s use of derivatives may increase its costs, reduce the Fund’s returns and/or increase volatility. Derivatives involve significant risks, including:
Volatility Risk — Volatility is defined as the characteristic of a security, an index or a market to fluctuate significantly in price within a short time period. A risk of the Fund’s use of derivatives is that the fluctuations in their values may not correlate with the overall securities markets.
Counterparty Risk — Derivatives are also subject to counterparty risk, which is the risk that the other party in the transaction will not fulfill its contractual obligation.
Market and Liquidity Risk — The possible lack of a liquid secondary market for derivatives and the resulting inability of the Fund to sell or otherwise close a derivatives position could expose the Fund to losses and could make derivatives more difficult for the Fund to value accurately.
Valuation Risk — Valuation may be more difficult in times of market turmoil since many investors and market makers may be reluctant to purchase complex instruments or quote prices for them.
Hedging Risk — Hedges are sometimes subject to imperfect matching between the derivative and the underlying security, and there can be no assurance that the Fund’s hedging transactions will be effective. The use of hedging may result in certain adverse tax consequences.
Tax Risk — Certain aspects of the tax treatment of derivative instruments, including swap agreements and commodity-linked derivative instruments, are currently unclear and may be affected by changes in legislation, regulations or other legally binding authority. Such treatment may be less favorable than that given to a direct investment in an underlying asset and may adversely affect the timing, character and amount of income the Fund realizes from its investments.
Regulatory Risk — Derivative contracts, including, without limitation, swaps, currency forwards and non-deliverable forwards, are subject to regulation under the Dodd-Frank Wall Street Reform and Consumer Protection Act (“Dodd Frank Act”) in the United States and under comparable regimes in Europe, Asia and other non-U.S. jurisdictions. Under the Dodd-Frank Act, certain derivatives are subject to margin requirements and swap dealers are required to collect margin from the Fund with respect to such derivatives. Specifically, regulations are now in effect that require swap dealers to post and collect variation margin (comprised of specified liquid instruments and subject to a required haircut) in connection with trading of over-the-counter (“OTC”) swaps with the Fund. Shares of investment companies (other than certain money market funds) may not be posted as collateral under these regulations. Requirements for posting of initial margin in connection with OTC swaps will be phased-in through 2020. In addition, regulations adopted by prudential regulators that will begin to take effect in 2019 will require certain bank-regulated counterparties and certain of their affiliates to include in certain financial contracts, including many derivatives contracts, terms that delay or restrict the rights of counterparties, such as the Fund, to terminate such contracts, foreclose upon collateral, exercise other default rights or restrict transfers of credit support in the event that the counterparty and/or its affiliates are subject to certain types of resolution or insolvency proceedings. The implementation of these requirements with respect to derivatives, as well as regulations under the Dodd-Frank Act regarding clearing, mandatory trading and margining of other derivatives may increase the costs and risks to the Fund of trading in these instruments and, as a result, may affect returns to investors in the Fund.
- Emerging Markets Risk — Emerging markets are riskier than more developed markets because they tend to develop unevenly and may never fully develop. Investments in emerging markets may be considered speculative. Emerging markets are more likely to experience hyperinflation and currency devaluations, which adversely affect returns to U.S. investors. In addition, many emerging securities markets have far lower trading volumes and less liquidity than developed markets.
- Foreign Securities Risk — Foreign investments often involve special risks not present in U.S. investments that can increase the chances that the Fund will lose money. These risks include:
- The Fund generally holds its foreign securities and cash in foreign banks and securities depositories, which may be recently organized or new to the foreign custody business and may be subject to only limited or no regulatory oversight.
- Changes in foreign currency exchange rates can affect the value of the Fund’s portfolio.
- The economies of certain foreign markets may not compare favorably with the economy of the United States with respect to such issues as growth of gross national product, reinvestment of capital, resources and balance of payments position.
- The governments of certain countries may prohibit or impose substantial restrictions on foreign investments in their capital markets or in certain industries.
- Many foreign governments do not supervise and regulate stock exchanges, brokers and the sale of securities to the same extent as does the United States and may not have laws to protect investors that are comparable to U.S. securities laws.
- Settlement and clearance procedures in certain foreign markets may result in delays in payment for or delivery of securities not typically associated with settlement and clearance of U.S. investments.
- The European financial markets have recently experienced volatility and adverse trends due to concerns about economic downturns in, or rising government debt levels of, several European countries. These events may spread to other countries in Europe. These events may affect the value and liquidity of certain of the Fund’s investments.
- High Portfolio Turnover Risk — The Fund may engage in active and frequent trading of its portfolio securities. High portfolio turnover (more than 100%) may result in increased transaction costs to the Fund, including brokerage commissions, dealer mark-ups and other transaction costs on the sale of the securities and on reinvestment in other securities. The sale of Fund portfolio securities may result in the realization and/or distribution to shareholders of higher capital gains or losses as compared to a fund with less active trading policies. These effects of higher than normal portfolio turnover may adversely affect Fund performance. In addition, investment in mortgage dollar rolls and participation in to-be-announced (“TBA”) transactions may significantly increase the Fund’s portfolio turnover rate. A TBA transaction is a method of trading mortgage-backed securities where the buyer and seller agree upon general trade parameters such as agency, settlement date, par amount, and price at the time the contract is entered into but the mortgage-backed securities are delivered in the future, generally 30 days later.
- Junk Bonds Risk — Although junk bonds generally pay higher rates of interest than investment grade bonds, junk bonds are high risk investments that are considered speculative and may cause income and principal losses for the Fund.
- Leverage Risk — Some transactions may give rise to a form of economic leverage. These transactions may include, among others, derivatives, and may expose the Fund to greater risk and increase its costs. The use of leverage may cause the Fund to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or to meet any required asset segregation requirements. Increases and decreases in the value of the Fund’s portfolio will be magnified when the Fund uses leverage.
- Liquidity Risk — Liquidity risk exists when particular investments are difficult to purchase or sell. The Fund’s investments in illiquid securities may reduce the returns of the Fund because it may be difficult to sell the illiquid securities at an advantageous time or price. To the extent that the Fund’s principal investment strategies involve derivatives or securities with substantial market and/or credit risk, the Fund will tend to have the greatest exposure to liquidity risk. Liquidity risk may be the result of, among other things, the reduced number and capacity of traditional market participants to make a market in fixed-income securities or the lack of an active market. Liquid investments may become illiquid or less liquid after purchase by the Fund, particularly during periods of market turmoil. Illiquid and relatively less liquid investments may be harder to value, especially in changing markets, and if the Fund is forced to sell these investments to meet redemption requests or for other cash needs, the Fund may suffer a loss. This may be magnified in a rising interest rate environment or other circumstances where investor redemptions from fixed-income mutual funds may be higher than normal. In addition, when there is illiquidity in the market for certain securities, the Fund, due to limitations on illiquid investments, may be subject to purchase and sale restrictions.
- Market Risk and Selection Risk — Market risk is the risk that one or more markets in which the Fund invests will go down in value, including the possibility that the markets will go down sharply and unpredictably. Selection risk is the risk that the securities selected by Fund management will underperform the markets, the relevant indices or the securities selected by other funds with similar investment objectives and investment strategies. This means you may lose money.
- Mortgage- and Asset-Backed Securities Risks — Mortgage- and asset-backed securities represent interests in “pools” of mortgages or other assets, including consumer loans or receivables held in trust. Mortgage- and asset-backed securities are subject to credit, interest rate, prepayment and extension risks. These securities also are subject to risk of default on the underlying mortgage or asset, particularly during periods of economic downturn. Small movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain mortgage-backed securities.
- Municipal Securities Risks — Municipal securities risks include the ability of the issuer to repay the obligation, the relative lack of information about certain issuers of municipal securities, and the possibility of future legislative changes which could affect the market for and value of municipal securities. These risks include:
General Obligation Bonds Risks — Timely payments depend on the issuer’s credit quality, ability to raise tax revenues and ability to maintain an adequate tax base.
Revenue Bonds Risks — These payments depend on the money earned by the particular facility or class of facilities, or the amount of revenues derived from another source.
Private Activity Bonds Risks — Municipalities and other public authorities issue private activity bonds to finance development of industrial facilities for use by a private enterprise. The private enterprise pays the principal and interest on the bond, and the issuer does not pledge its faith, credit and taxing power for repayment.
Moral Obligation Bonds Risks — Moral obligation bonds are generally issued by special purpose public authorities of a state or municipality. If the issuer is unable to meet its obligations, repayment of these bonds becomes a moral commitment, but not a legal obligation, of the state or municipality.
Municipal Notes Risks — Municipal notes are shorter term municipal debt obligations. If there is a shortfall in the anticipated proceeds, the notes may not be fully repaid and the Fund may lose money.
Municipal Lease Obligations Risks — In a municipal lease obligation, the issuer agrees to make payments when due on the lease obligation. Although the issuer does not pledge its unlimited taxing power for payment of the lease obligation, the lease obligation is secured by the leased property.
Tax-Exempt Status Risk — The Fund and its investment manager will rely on the opinion of issuers’ bond counsel and, in the case of derivative securities, sponsors’ counsel, on the tax-exempt status of interest on municipal bonds and payments under derivative securities. Neither the Fund nor its investment manager will independently review the bases for those tax opinions, which may ultimately be determined to be incorrect and subject the Fund and its shareholders to substantial tax liabilities.
- Short Sales Risk — Because making short sales in securities that it does not own exposes the Fund to the risks associated with those securities, such short sales involve speculative exposure risk. The Fund will incur a loss as a result of a short sale if the price of the security increases between the date of the short sale and the date on which the Fund replaces the security sold short.
- U.S. Government Obligations Risk — Certain securities in which the Fund may invest, including securities issued by certain U.S. Government agencies and U.S. Government sponsored enterprises, are not guaranteed by the U.S. Government or supported by the full faith and credit of the United States.
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| Risk Lose Money [Text] |
rr_RiskLoseMoney |
You may lose part or all of your investment in the Fund or your investment may not perform as well as other similar investments.
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| Bar Chart and Performance Table [Heading] |
rr_BarChartAndPerformanceTableHeading |
Performance Information
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| Performance Narrative [Text Block] |
rr_PerformanceNarrativeTextBlock |
The Fund has not commenced operations as of the date of this prospectus. The returns presented for the Fund reflect the performance of the Predecessor Fund. It is anticipated that on or about September 17, 2018, the Fund will acquire all of the assets, subject to the liabilities, of the Predecessor Fund through a tax-free reorganization (the “Reorganization”). As a result of the Reorganization, the Fund will adopt the performance and financial history of the Predecessor Fund. The Reorganization is being consummated in connection with a potential reconfiguration of the existing fund complexes overseen by the boards of directors/trustees of the BlackRock-advised funds. The Fund has the same investment objectives, strategies and policies, portfolio management team and contractual arrangements, including the same contractual fees and expenses, as the Predecessor Fund. As a result, the performance of the Fund would have been substantially similar to that of the Predecessor Fund.
The information shows you how the Predecessor Fund’s performance has varied year by year and provides some indication of the risks of investing in the Fund. Investor A and Investor C Shares commenced operations on April 30, 2012 and Institutional Shares commenced operations on February 28, 2011. As a result, for periods prior to February 28, 2011 for Institutional Shares and April 30, 2012 for Investor A and Investor C Shares, the chart and table are based on the performance of the Predecessor Master Portfolio in which the Predecessor Fund invested all of its assets, adjusted to reflect the fees and expenses of each respective share class of the Predecessor Fund. The table compares the Predecessor Fund’s performance to that of the Bloomberg Barclays U.S. Aggregate Bond Index. To the extent that dividends and distributions have been paid by the Predecessor Fund, the performance information for the Predecessor Fund in the chart and table assumes reinvestment of the dividends and distributions. As with all such investments, past performance (before and after taxes) is not an indication of future results. Sales charges, if any, are not reflected in the bar chart. If they were, returns would be less than those shown. However, the table includes all applicable fees and sales charges. If BlackRock and its affiliates had not waived or reimbursed certain Predecessor Master Portfolio and/or Predecessor Fund expenses during these periods, the Predecessor Master Portfolio’s/Predecessor Fund’s returns would have been lower. Updated information on the Fund’s performance, including its current net asset value, can be obtained by visiting www.blackrock.com or can be obtained by phone at (800) 882-0052.
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| Performance Information Illustrates Variability of Returns [Text] |
rr_PerformanceInformationIllustratesVariabilityOfReturns |
The information shows you how the Predecessor Fund’s performance has varied year by year and provides some indication of the risks of investing in the Fund.
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| Performance Availability Phone [Text] |
rr_PerformanceAvailabilityPhone |
(800) 882-0052
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| Performance Availability Website Address [Text] |
rr_PerformanceAvailabilityWebSiteAddress |
www.blackrock.com
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| Performance Past Does Not Indicate Future [Text] |
rr_PerformancePastDoesNotIndicateFuture |
As with all such investments, past performance (before and after taxes) is not an indication of future results.
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| Bar Chart [Heading] |
rr_BarChartHeading |
Institutional Shares
ANNUAL TOTAL RETURNS
BlackRock CoreAlpha Bond Fund
As of 12/31
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| Bar Chart Does Not Reflect Sales Loads [Text] |
rr_BarChartDoesNotReflectSalesLoads |
Sales charges, if any, are not reflected in the bar chart. If they were, returns would be less than those shown.
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| Bar Chart Closing [Text Block] |
rr_BarChartClosingTextBlock |
During the ten-year period shown in the bar chart, the highest return for a quarter was 5.78% (quarter ended September 30, 2009) and the lowest return for a quarter was –3.22% (quarter ended December 31, 2016).
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| Performance Table Heading |
rr_PerformanceTableHeading |
As of 12/31/17
Average Annual Total Returns
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| Performance Table Does Reflect Sales Loads |
rr_PerformanceTableDoesReflectSalesLoads |
However, the table includes all applicable fees and sales charges.
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| Investor A, C and Institutional | BlackRock CoreAlpha Bond Fund | Investor A Shares |
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|
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| Risk/Return: |
rr_RiskReturnAbstract |
|
|
| Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price) |
rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice |
4.00%
|
|
| Maximum Deferred Sales Charge (Load) (as percentage of offering price or redemption proceeds, whichever is lower) |
rr_MaximumDeferredSalesChargeOverOfferingPrice |
none
|
[1] |
| Management Fee |
rr_ManagementFeesOverAssets |
0.25%
|
[2],[3],[4] |
| Distribution and/or Service (12b-1) Fees |
rr_DistributionAndService12b1FeesOverAssets |
0.25%
|
[4] |
| Administration Fee |
rr_Component1OtherExpensesOverAssets |
0.20%
|
[4] |
| Independent Expenses |
rr_Component2OtherExpensesOverAssets |
0.01%
|
[4],[5] |
| Other Expenses |
rr_OtherExpensesOverAssets |
0.21%
|
[4],[5],[6] |
| Acquired Fund Fees and Expenses |
rr_AcquiredFundFeesAndExpensesOverAssets |
0.02%
|
[4],[6],[7] |
| Total Annual Fund Operating Expenses |
rr_ExpensesOverAssets |
0.73%
|
[4],[7] |
| Fee Waivers and/or Expense Reimbursements |
rr_FeeWaiverOrReimbursementOverAssets |
(0.02%)
|
[2],[4],[5] |
| Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements |
rr_NetExpensesOverAssets |
0.71%
|
[2],[4],[5] |
| 1 Year |
rr_ExpenseExampleYear01 |
$ 470
|
|
| 3 Years |
rr_ExpenseExampleYear03 |
622
|
|
| 5 Years |
rr_ExpenseExampleYear05 |
788
|
|
| 10 Years |
rr_ExpenseExampleYear10 |
$ 1,268
|
|
| 1 Year |
rr_AverageAnnualReturnYear01 |
(0.33%)
|
|
| 5 Years |
rr_AverageAnnualReturnYear05 |
0.98%
|
|
| 10 Years |
rr_AverageAnnualReturnYear10 |
3.76%
|
|
| Investor A, C and Institutional | BlackRock CoreAlpha Bond Fund | Investor C Shares |
|
|
|
| Risk/Return: |
rr_RiskReturnAbstract |
|
|
| Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price) |
rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice |
none
|
|
| Maximum Deferred Sales Charge (Load) (as percentage of offering price or redemption proceeds, whichever is lower) |
rr_MaximumDeferredSalesChargeOverOfferingPrice |
1.00%
|
[8] |
| Management Fee |
rr_ManagementFeesOverAssets |
0.25%
|
[2],[3],[4] |
| Distribution and/or Service (12b-1) Fees |
rr_DistributionAndService12b1FeesOverAssets |
1.00%
|
[4] |
| Administration Fee |
rr_Component1OtherExpensesOverAssets |
0.20%
|
[4] |
| Independent Expenses |
rr_Component2OtherExpensesOverAssets |
0.01%
|
[4],[5] |
| Other Expenses |
rr_OtherExpensesOverAssets |
0.21%
|
[4],[5],[6] |
| Acquired Fund Fees and Expenses |
rr_AcquiredFundFeesAndExpensesOverAssets |
0.02%
|
[4],[6],[7] |
| Total Annual Fund Operating Expenses |
rr_ExpensesOverAssets |
1.48%
|
[4],[7] |
| Fee Waivers and/or Expense Reimbursements |
rr_FeeWaiverOrReimbursementOverAssets |
(0.02%)
|
[2],[4],[5] |
| Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements |
rr_NetExpensesOverAssets |
1.46%
|
[2],[4],[5] |
| 1 Year |
rr_ExpenseExampleYear01 |
$ 249
|
|
| 3 Years |
rr_ExpenseExampleYear03 |
466
|
|
| 5 Years |
rr_ExpenseExampleYear05 |
806
|
|
| 10 Years |
rr_ExpenseExampleYear10 |
1,767
|
|
| 1 Year |
rr_ExpenseExampleNoRedemptionYear01 |
149
|
|
| 3 Years |
rr_ExpenseExampleNoRedemptionYear03 |
466
|
|
| 5 Years |
rr_ExpenseExampleNoRedemptionYear05 |
806
|
|
| 10 Years |
rr_ExpenseExampleNoRedemptionYear10 |
$ 1,767
|
|
| 1 Year |
rr_AverageAnnualReturnYear01 |
2.05%
|
|
| 5 Years |
rr_AverageAnnualReturnYear05 |
1.09%
|
|
| 10 Years |
rr_AverageAnnualReturnYear10 |
3.42%
|
|
| Investor A, C and Institutional | BlackRock CoreAlpha Bond Fund | Institutional Shares |
|
|
|
| Risk/Return: |
rr_RiskReturnAbstract |
|
|
| Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price) |
rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice |
none
|
|
| Maximum Deferred Sales Charge (Load) (as percentage of offering price or redemption proceeds, whichever is lower) |
rr_MaximumDeferredSalesChargeOverOfferingPrice |
none
|
|
| Management Fee |
rr_ManagementFeesOverAssets |
0.25%
|
[2],[3],[4] |
| Distribution and/or Service (12b-1) Fees |
rr_DistributionAndService12b1FeesOverAssets |
none
|
[4] |
| Administration Fee |
rr_Component1OtherExpensesOverAssets |
0.10%
|
[4] |
| Independent Expenses |
rr_Component2OtherExpensesOverAssets |
0.01%
|
[4],[5] |
| Other Expenses |
rr_OtherExpensesOverAssets |
0.11%
|
[4],[5],[6] |
| Acquired Fund Fees and Expenses |
rr_AcquiredFundFeesAndExpensesOverAssets |
0.02%
|
[4],[6],[7] |
| Total Annual Fund Operating Expenses |
rr_ExpensesOverAssets |
0.38%
|
[4],[7] |
| Fee Waivers and/or Expense Reimbursements |
rr_FeeWaiverOrReimbursementOverAssets |
(0.02%)
|
[2],[4],[5] |
| Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements |
rr_NetExpensesOverAssets |
0.36%
|
[2],[4],[5] |
| 1 Year |
rr_ExpenseExampleYear01 |
$ 37
|
|
| 3 Years |
rr_ExpenseExampleYear03 |
120
|
|
| 5 Years |
rr_ExpenseExampleYear05 |
211
|
|
| 10 Years |
rr_ExpenseExampleYear10 |
$ 478
|
|
| 2008 |
rr_AnnualReturn2008 |
3.60%
|
|
| 2009 |
rr_AnnualReturn2009 |
11.65%
|
|
| 2010 |
rr_AnnualReturn2010 |
6.54%
|
|
| 2011 |
rr_AnnualReturn2011 |
8.34%
|
|
| 2012 |
rr_AnnualReturn2012 |
4.82%
|
|
| 2013 |
rr_AnnualReturn2013 |
(2.44%)
|
|
| 2014 |
rr_AnnualReturn2014 |
6.45%
|
|
| 2015 |
rr_AnnualReturn2015 |
0.48%
|
|
| 2016 |
rr_AnnualReturn2016 |
2.37%
|
|
| 2017 |
rr_AnnualReturn2017 |
4.19%
|
|
| Highest Quarterly Return, Label |
rr_HighestQuarterlyReturnLabel |
highest return
|
|
| Highest Quarterly Return, Date |
rr_BarChartHighestQuarterlyReturnDate |
Sep. 30, 2009
|
|
| Highest Quarterly Return |
rr_BarChartHighestQuarterlyReturn |
5.78%
|
|
| Lowest Quarterly Return, Label |
rr_LowestQuarterlyReturnLabel |
lowest return
|
|
| Lowest Quarterly Return, Date |
rr_BarChartLowestQuarterlyReturnDate |
Dec. 31, 2016
|
|
| Lowest Quarterly Return |
rr_BarChartLowestQuarterlyReturn |
(3.22%)
|
|
| 1 Year |
rr_AverageAnnualReturnYear01 |
4.19%
|
|
| 5 Years |
rr_AverageAnnualReturnYear05 |
2.16%
|
|
| 10 Years |
rr_AverageAnnualReturnYear10 |
4.53%
|
|
| Investor A, C and Institutional | BlackRock CoreAlpha Bond Fund | Return After Taxes on Distributions | Institutional Shares |
|
|
|
| Risk/Return: |
rr_RiskReturnAbstract |
|
|
| 1 Year |
rr_AverageAnnualReturnYear01 |
3.09%
|
|
| 5 Years |
rr_AverageAnnualReturnYear05 |
1.01%
|
|
| 10 Years |
rr_AverageAnnualReturnYear10 |
3.76%
|
|
| Investor A, C and Institutional | BlackRock CoreAlpha Bond Fund | Return After Taxes on Distributions and Sale of Fund Shares | Institutional Shares |
|
|
|
| Risk/Return: |
rr_RiskReturnAbstract |
|
|
| 1 Year |
rr_AverageAnnualReturnYear01 |
2.36%
|
|
| 5 Years |
rr_AverageAnnualReturnYear05 |
1.14%
|
|
| 10 Years |
rr_AverageAnnualReturnYear10 |
3.24%
|
|
| Investor A, C and Institutional | BlackRock CoreAlpha Bond Fund | Bloomberg Barclays U.S. Aggregate Bond Index (Reflects no deduction for fees, expenses or taxes) |
|
|
|
| Risk/Return: |
rr_RiskReturnAbstract |
|
|
| 1 Year |
rr_AverageAnnualReturnYear01 |
3.54%
|
|
| 5 Years |
rr_AverageAnnualReturnYear05 |
2.10%
|
|
| 10 Years |
rr_AverageAnnualReturnYear10 |
4.01%
|
|
|
|
