v3.25.1
Investment Risks - Vanguard Multi-Sector Income Bond ETF
Sep. 30, 2024
Prospectus [Line Items]  
Risk [Text Block] Because of the speculative nature of junk bonds, you should carefully consider the risks associated with this Fund before you purchase shares.Because the Fund is an exchange-traded fund (ETF) and the Fund’s shares are traded on an exchange, the Fund is subject to additional risks:
Interest Rate Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Interest rate risk, which is the chance that bond prices overall will decline because of rising interest rates.
Income Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Income risk, which is the chance that the Fund’s income will decline because of falling interest rates. A fund’s income declines when interest rates fall because the fund then must invest new cash flow and cash from maturing bonds in lower- yielding bonds. Income risk is generally high for short-term bond funds and moderate for intermediate-term bond funds, so investors should expect the Fund’s monthly income to fluctuate accordingly.
Call Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Call risk, which is the chance that during periods of falling interest rates, issuers of callable bonds may call (redeem) securities with higher coupon rates or interest rates before their maturity dates. The Fund would then lose any price appreciation above the bond’s call price and would be forced to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund’s income. Such redemptions and subsequent reinvestments would also increase the Fund’s portfolio turnover rate.
Prepayment Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Prepayment risk, which is the chance that during periods of falling interest rates, homeowners will refinance their mortgages before their maturity dates, resulting in prepayment of mortgage-backed securities held by the Fund. The Fund would then lose any price appreciation above the mortgage’s principal and would be forced to reinvest the unanticipated proceeds at lower interest rates, resulting in a decline in the Fund’s income. Such prepayments and subsequent reinvestments would also increase the Fund’s portfolio turnover rate.
Extension Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Extension risk, which is the chance that during periods of rising interest rates, certain debt securities will be paid off substantially more slowly than originally anticipated, and the value of those securities may fall.
Credit Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Credit risk, which is the chance that a bond issuer will fail to pay interest or principal in a timely manner or that negative perceptions of the issuer’s ability to make such payments will cause the price of that bond to decline. Because the Fund invests in junk bonds, credit risk should be high for the Fund.
Liquidity Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Liquidity risk, which is the chance that the Fund may not be able to sell a security in a timely manner at a desired price.
Country Regional Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Country/regional risk, which is the chance that world events—such as political upheaval, financial troubles, or natural disasters—will adversely affect the value and/or liquidity of securities issued by foreign governments, government agencies, government-owned corporations, and foreign companies. Because the Fund may invest its assets in bonds of issuers located in any one country or region, the Fund’s performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging market countries.
Emerging Markets Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Emerging markets risk, which is the chance that the bonds of governments, government agencies, government-owned corporations, and foreign companies located in emerging market countries will be substantially more volatile, and substantially less liquid, than the bonds of governments, government agencies, government-owned corporations, and foreign companies located in more developed foreign markets because, among other factors, emerging market countries can have more variable economic performance; greater custodial and operational risks; less developed legal, tax, regulatory, financial reporting, accounting, and record keeping systems; and greater political, social, and economic instability than developed markets.
Currency Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates. Currency risk is especially high in emerging market countries.
Currency Hedging Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Currency hedging risk. The Fund will decline in value if it underhedges a currency that has weakened or overhedges a currency that has strengthened relative to the U.S. dollar. In addition, the Fund will incur expenses to hedge its foreign currency exposure. By entering into currency hedging transactions, the Fund may eliminate any chance to benefit from favorable fluctuations in relevant currency exchange rates.
Manager Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Manager risk, which is the chance that poor security selection will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective.
Management of certain similar funds risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Management of certain similar funds risk. The name, investment objective, principal investment strategies, and risks of the Fund are similar to another separate fund managed by the Fund’s portfolio managers. However, the investment results of the Fund may be higher or lower than, and there is no guarantee that the investment results of the Fund will be comparable to, that other fund.
Derivatives Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Structured products risk. The Fund is subject to structured products risk. Structured products are subject to the risks associated with the underlying assets and may decline in value due to changes in the underlying assets. Certain structured products may be thinly traded or have a limited trading market, and as a result may be characterized as illiquid. Structured products are also subject to credit risk; the assets backing the structured product may be insufficient to pay interest or principal. In addition to the general risks associated with credit investments, structured products carry additional risks, including: the collateral may decline in value or default, the distributions from collateral securities may not be adequate to make interest or other payments, and the structured products may be subordinate to other classes.• Derivatives risk. The Fund may invest in derivatives, which may involve risks different from, and possibly greater than, those of investments directly in the underlying securities or assets.
Counterparty Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Counterparty risk, which is the chance that the counterparty to a derivatives contract, or other investment vehicle, with the Fund is unable or unwilling to meet its financial obligations.
ETF exchange_volatility Risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • The Fund’s ETF Shares are listed for trading on Cboe BZX Exchange, Inc. and are bought and sold on the secondary market at market prices. Although it is expected that the market price of an ETF Share typically will approximate its net asset value (NAV), there may be times when the market price and the NAV differ significantly. Thus, you may pay more or less than NAV when you buy ETF Shares on the secondary market, and you may receive more or less than NAV when you sell those shares.
ETF_active trading_increased risk [Member]  
Prospectus [Line Items]  
Risk [Text Block] • Although the Fund’s ETF Shares are listed for trading on Cboe BZX Exchange, Inc., it is possible that an active trading market may not be maintained, which could increase the Fund’s risks as disclosed in this prospectus.
Risk Lose Money [Member]  
Prospectus [Line Items]  
Risk [Text Block] An investment in the Fund could lose money over short or long periods of time.
Risk Not Insured Depository Institution [Member]  
Prospectus [Line Items]  
Risk [Text Block] An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.