3.24.4 html 105 76 1 true 47 0 false 2 false false R1.htm 000000 - Document - Document and Entity Information {Elements} Sheet http://www.vanguard.com/role/DocumentDocumentandEntityInformationElements Document and Entity Information Risk/Return 1 false false R2.htm 000019 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Short-Term Inflation-Protected Securities Index Fund (Investor) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardShort-TermInflation-ProtectedSecuritiesIndexFundInvestor Risk/Return Detail Data- Vanguard Short-Term Inflation-Protected Securities Index Fund (Investor) Risk/Return 2 false false R3.htm 000029 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Short-Term Inflation-Protected Securities Index Fund (Admiral) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardShort-TermInflation-ProtectedSecuritiesIndexFundAdmiral Risk/Return Detail Data- Vanguard Short-Term Inflation-Protected Securities Index Fund (Admiral) Risk/Return 3 false false R4.htm 000039 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Short-Term Inflation-Protected Securities Index Fund (Institutional) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardShort-TermInflation-ProtectedSecuritiesIndexFundInstitutional Risk/Return Detail Data- Vanguard Short-Term Inflation-Protected Securities Index Fund (Institutional) Risk/Return 4 false false R5.htm 000049 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Short-Term Inflation-Protected Securities Index Fund (ETF) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardShort-TermInflation-ProtectedSecuritiesIndexFundETF Risk/Return Detail Data- Vanguard Short-Term Inflation-Protected Securities Index Fund (ETF) Risk/Return 5 false false R6.htm 000059 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Institutional Short-Term Bond Fund (Institutional) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardInstitutionalShort-TermBondFundInstitutional Risk/Return Detail Data- Vanguard Institutional Short-Term Bond Fund (Institutional) Risk/Return 6 false false R7.htm 000069 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Institutional Intermediate-Term Bond Fund (Institutional) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardInstitutionalIntermediate-TermBondFundInstitutional Risk/Return Detail Data- Vanguard Institutional Intermediate-Term Bond Fund (Institutional) Risk/Return 7 false false R8.htm 000079 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Core Bond Fund (Retail) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardCoreBondFundRetail Risk/Return Detail Data- Vanguard Core Bond Fund (Retail) Risk/Return 8 false false R9.htm 000089 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Emerging Markets Bond Fund (Retail) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardEmergingMarketsBondFundRetail Risk/Return Detail Data- Vanguard Emerging Markets Bond Fund (Retail) Risk/Return 9 false false R10.htm 000099 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Core-Plus Bond Fund (Retail) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardCore-PlusBondFundRetail Risk/Return Detail Data- Vanguard Core-Plus Bond Fund (Retail) Risk/Return 10 false false R11.htm 000109 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Multi-Sector Income Bond Fund (Retail) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardMulti-SectorIncomeBondFundRetail Risk/Return Detail Data- Vanguard Multi-Sector Income Bond Fund (Retail) Risk/Return 11 false false R12.htm 000119 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Core Bond ETF (ETF) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardCoreBondETFETF Risk/Return Detail Data- Vanguard Core Bond ETF (ETF) Risk/Return 12 false false R13.htm 000129 - Disclosure - Risk/Return Detail Data {Elements} - Vanguard Core-Plus Bond ETF (ETF) Sheet http://www.vanguard.com/role/DisclosureRiskReturnDetailDataElementsVanguardCore-PlusBondETFETF Risk/Return Detail Data- Vanguard Core-Plus Bond ETF (ETF) Risk/Return 13 false false R14.htm 040000 - Disclosure - Risk/Return Detail Data {Elements} Sheet http://xbrl.sec.gov/rr/role/RiskReturnDetailData Risk/Return Detail Data Risk/Return 14 false false All Reports Book All Reports f40548d0.htm malvern-20250130.xsd malvern-20250130_cal.xml malvern-20250130_def.xml malvern-20250130_lab.xml malvern-20250130_pre.xml cb1320_14.jpg cbv023etf_7.jpg cpbv022etf_9.jpg cpv001_10.jpg emb1431_14.jpg flag.gif iib465_15.jpg isb472_14.jpg msb4181_11.jpg sis0567_10.jpg sis1867_21.jpg sis1967_21.jpg sis3365_22.jpg vanguard_2.jpg http://xbrl.sec.gov/dei/2023 http://xbrl.sec.gov/rr/2023 true true