| Form N-CSR Cover | 12 Months Ended |
| Sep. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Vanguard Malvern Funds |
| Entity Central Index Key | 0000836906 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| Shareholder Report | 12 Months Ended | |
| Sep. 30, 2024 USD ($) Holding | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSR | |
| Amendment Flag | false | |
| Registrant Name | Vanguard Malvern Funds | |
| Entity Central Index Key | 0000836906 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Sep. 30, 2024 | |
| C000157008 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Institutional Intermediate-Term Bond Fund | |
| Class Name | Institutional Plus Shares | |
| Trading Symbol | VIITX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Institutional Intermediate-Term Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Plus Shares $ 0.02 % | |
| Expenses Paid, Amount | $ 2 | |
| Expense Ratio, Percent | 0.02% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund underperformed its benchmark, the Bloomberg U.S. Intermediate Aggregate ex Baa Index. U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Bond Index of investment-grade bonds returned about 11.6%. The Fund’s advisor added value through higher exposure to corporate and asset-backed securities and a larger credit beta overweight. The Fund nevertheless underperformed relative to its benchmark largely because the duration of the Fund’s portfolio was significantly longer. For the 10 years ended September 30, 2024, the Fund’s average annual return outpaced that of its benchmark. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Plus Shares 10.07% 1.35% 2.01% Bloomberg U.S. Intermediate Aggregate ex Baa Index 10.16% 0.68% 1.64% Bloomberg U.S. Aggregate Bond Index 11.57% 0.33% 1.84% | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 31,524,000,000 | |
| Holdings Count | Holding | 1,975 | |
| Advisory Fees Paid, Amount | $ 3,822,000 | |
| Investment Company Portfolio Turnover | 228% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,975 Portfolio Turnover Rate 228 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 10.9 % Corporate Bonds 24.7 % Sovereign Bonds 2.0 % Taxable Municipal Bonds 0.4 % U.S. Government and Agency Obligations 58.1 % Conventional Mortgage-Backed Securities—Liability for Sale Commitments (1.1 % ) Other Assets and Liabilities—Net 5.0 % | |
| C000157009 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Institutional Short-Term Bond Fund | |
| Class Name | Institutional Plus Shares | |
| Trading Symbol | VISTX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Institutional Short-Term Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Institutional Plus Shares $ 0.02 % | |
| Expenses Paid, Amount | $ 2 | |
| Expense Ratio, Percent | 0.02% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund outperformed its benchmark, the Bloomberg Government/Credit 1‒3 Year ex Baa Index. U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. The Fund outperformed because it had a greater exposure to corporate and asset-backed securities than its benchmark and was overweighted in segments of the market that are more sensitive to credit risk. For the 10 years ended September 30, 2024, the Fund’s average annual return outpaced that of its benchmark. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Plus Shares 7.85% 2.03% 1.97% Bloomberg U.S. Government/Credit 1–3 Year ex Baa Index 7.02% 1.61% 1.55% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 5,874,000,000 | |
| Holdings Count | Holding | 487 | |
| Advisory Fees Paid, Amount | $ 124,000 | |
| Investment Company Portfolio Turnover | 112% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 487 Portfolio Turnover Rate 112 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 35.1 % Corporate Bonds 31.3 % Sovereign Bonds 2.0 % U.S. Government and Agency Obligations 26.1 % Other Assets and Liabilities—Net 5.5 % | |
| C000166996 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Core Bond Fund | |
| Class Name | Investor Shares | |
| Trading Symbol | VCORX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Core Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Shares $ 0.20 % | |
| Expenses Paid, Amount | $ 21 | |
| Expense Ratio, Percent | 0.20% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund slightly outperformed its benchmark, the U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. The Fund outperformed its benchmark by carrying a modest overweight to sectors that are more sensitive to credit risk. Other strategies, including adding duration, positioning for longer-term yields to be higher than short-term yields, and taking advantage of interest rate moves outside the U.S. bond market, such as those in Japan, added value. Selection in emerging markets bonds, high-yield bonds, and investment-grade corporate bonds also contributed to performance. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: March 28, 2016, Through September 30, 2024 Initial Investment of $10,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception Investor Shares 11.92% 0.91% 1.95 % Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.64% | |
| Performance Inception Date | Mar. 28, 2016 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 12,696,000,000 | |
| Holdings Count | Holding | 2,417 | |
| Advisory Fees Paid, Amount | $ 1,332,000 | |
| Investment Company Portfolio Turnover | 363% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 2,417 Portfolio Turnover Rate 363 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 6.4 % Corporate Bonds 31.3 % Floating Rate Loan Interests 0.0 % Sovereign Bonds 18.3 % Taxable Municipal Bonds 0.0 % U.S. Government and Agency Obligations 41.3 % Conventional Mortgage-Backed Securities—Liability for Sale Commitments (2.9 % ) Other Assets and Liabilities—Net 5.6 % | |
| C000166995 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Core Bond Fund | |
| Class Name | Admiral™ Shares | |
| Trading Symbol | VCOBX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Core Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Admiral Shares $ 0.10 % | |
| Expenses Paid, Amount | $ 11 | |
| Expense Ratio, Percent | 0.10% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund slightly outperformed its benchmark, the U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. The Fund outperformed its benchmark by carrying a modest overweight to sectors that are more sensitive to credit risk. Other strategies, including adding duration, positioning for longer-term yields to be higher than short-term yields, and taking advantage of interest rate moves outside the U.S. bond market, such as those in Japan, added value. Selection in emerging markets bonds, high-yield bonds, and investment-grade corporate bonds also contributed to performance. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: March 28, 2016, Through September 30, 2024 Initial Investment of $50,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception Admiral Shares 12.09% 1.02% 2.07 % Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.64% | |
| Performance Inception Date | Mar. 28, 2016 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 12,696,000,000 | |
| Holdings Count | Holding | 2,417 | |
| Advisory Fees Paid, Amount | $ 1,332,000 | |
| Investment Company Portfolio Turnover | 363% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 2,417 Portfolio Turnover Rate 363 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 6.4 % Corporate Bonds 31.3 % Floating Rate Loan Interests 0.0 % Sovereign Bonds 18.3 % Taxable Municipal Bonds 0.0 % U.S. Government and Agency Obligations 41.3 % Conventional Mortgage-Backed Securities—Liability for Sale Commitments (2.9 % ) Other Assets and Liabilities—Net 5.6 % | |
| C000231055 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Multi-Sector Income Bond Fund | |
| Class Name | Investor Shares | |
| Trading Symbol | VMSIX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Multi-Sector Income Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Shares $ 0.40 % | |
| Expenses Paid, Amount | $ 43 | |
| Expense Ratio, Percent | 0.40% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund outperformed its benchmark. U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. The Fund primarily outperformed because of positive selection across high-, medium-, and low-quality bonds; bonds within the high-yield segment were especially helpful. The Fund also added value through a long beta position and tactical sector positioning during the fiscal The average annual return of the Fund since its inception on October 12, 2021, through September 30, 2024, was well above that of its benchmark. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: October 12, 2021, Through September 30, 2024 Initial Investment of $10,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception Investor Shares 14.82% 2.15 % Multi-Sector Income Bond Composite Index 14.18% 1.53% Bloomberg U.S. Universal Bond Index 12.08% -0.94% | |
| Performance Inception Date | Oct. 12, 2021 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 206,000,000 | |
| Holdings Count | Holding | 973 | |
| Advisory Fees Paid, Amount | $ 0 | |
| Investment Company Portfolio Turnover | 81% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 973 Portfolio Turnover Rate 81 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 0.3 % Corporate Bonds 69.2 % Floating Rate Loan Interests 1.8 % Sovereign Bonds 18.4 % U.S. Government and Agency Obligations 8.3 % Other Assets and Liabilities—Net 2.0 % | |
| C000231054 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Multi-Sector Income Bond Fund | |
| Class Name | Admiral™ Shares | |
| Trading Symbol | VMSAX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Multi-Sector Income Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Admiral Shares $ 0.30 % | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.30% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund outperformed its benchmark. U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. The Fund primarily outperformed because of positive selection across high-, medium-, and low-quality bonds; bonds within the high-yield segment were especially helpful. The Fund also added value through a long beta position and tactical sector positioning during the fiscal The average annual return of the Fund since its inception on October 12, 2021, through September 30, 2024, was well above that of its benchmark. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: October 12, 2021, Through September 30, 2024 Initial Investment of $50,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception Admiral Shares 14.93% 2.25 % Multi-Sector Income Bond Composite Index 14.18% 1.53% Bloomberg U.S. Universal Bond Index 12.08% -0.94% | |
| Performance Inception Date | Oct. 12, 2021 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 206,000,000 | |
| Holdings Count | Holding | 973 | |
| Advisory Fees Paid, Amount | $ 0 | |
| Investment Company Portfolio Turnover | 81% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 973 Portfolio Turnover Rate 81 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 0.3 % Corporate Bonds 69.2 % Floating Rate Loan Interests 1.8 % Sovereign Bonds 18.4 % U.S. Government and Agency Obligations 8.3 % Other Assets and Liabilities—Net 2.0 % | |
| C000231057 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Core-Plus Bond Fund | |
| Class Name | Investor Shares | |
| Trading Symbol | VCPIX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Core-Plus Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Shares $ 0.30 % | |
| Expenses Paid, Amount | $ 32 | |
| Expense Ratio, Percent | 0.30% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, Vanguard Core-Plus Bond Fund outperformed its benchmark, the Bloomberg U.S. Universal Index. U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. The Fund outperformed its benchmark by carrying a modest overweight to sectors that are more sensitive to credit risk. Other strategies, including adding duration, positioning for longer-term yields to be higher than short-term yields, and taking advantage of interest rate moves outside the U.S. bond market, such as those in Japan, added value. Selection in emerging markets bonds, high-yield bonds, and investment-grade corporate bonds also contributed to performance. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: October 25, 2021, Through September 30, 2024 Initial Investment of $10,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception Investor Shares 12.73% -0.55 % Bloomberg U.S. Universal Bond Index 12.08% -0.91% | |
| Performance Inception Date | Oct. 25, 2021 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 599,000,000 | |
| Holdings Count | Holding | 1,658 | |
| Advisory Fees Paid, Amount | $ 62,000 | |
| Investment Company Portfolio Turnover | 415% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,658 Portfolio Turnover Rate 415 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 6.0 % Corporate Bonds 34.0 % Floating Rate Loan Interests 0.6 % Sovereign Bonds 22.4 % U.S. Government and Agency Obligations 36.4 % Conventional Mortgage-Backed Securities—Liability for Sale Commitments (3.2 % ) Other Assets and Liabilities—Net 3.8 % | |
| C000231056 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Core-Plus Bond Fund | |
| Class Name | Admiral™ Shares | |
| Trading Symbol | VCPAX | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Core-Plus Bond Fund (the "Fund") for the period of October 1, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Admiral Shares $ 0.20 % | |
| Expenses Paid, Amount | $ 21 | |
| Expense Ratio, Percent | 0.20% | |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, Vanguard Core-Plus Bond Fund outperformed its benchmark, the Bloomberg U.S. Universal Index. U.S. economic growth hovered around 3% on a year-over-year basis during the period, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. The Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. The Fund outperformed its benchmark by carrying a modest overweight to sectors that are more sensitive to credit risk. Other strategies, including adding duration, positioning for longer-term yields to be higher than short-term yields, and taking advantage of interest rate moves outside the U.S. bond market, such as those in Japan, added value. Selection in emerging markets bonds, high-yield bonds, and investment-grade corporate bonds also contributed to performance. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: October 25, 2021, Through September 30, 2024 Initial Investment of $50,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception Admiral Shares 12.78% -0.47 % Bloomberg U.S. Universal Bond Index 12.08% -0.91% | |
| Performance Inception Date | Oct. 25, 2021 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 599,000,000 | |
| Holdings Count | Holding | 1,658 | |
| Advisory Fees Paid, Amount | $ 62,000 | |
| Investment Company Portfolio Turnover | 415% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,658 Portfolio Turnover Rate 415 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 6.0 % Corporate Bonds 34.0 % Floating Rate Loan Interests 0.6 % Sovereign Bonds 22.4 % U.S. Government and Agency Obligations 36.4 % Conventional Mortgage-Backed Securities—Liability for Sale Commitments (3.2 % ) Other Assets and Liabilities—Net 3.8 % | |
| C000246714 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Core Bond ETF | |
| Class Name | ETF Shares | |
| Trading Symbol | VCRB | |
| Security Exchange Name | NASDAQ | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Core Bond ETF (the "Fund") for the period of December 12, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last period? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment ETF Shares $ 0.10 % 1 1 Annualized. | |
| Expenses Paid, Amount | $ 8 | |
| Expense Ratio, Percent | 0.10% | [1] |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? From its inception on December 12, 2023, through September 30, 2024, the Fund outperformed its benchmark, the Bloomberg U.S. Aggregate Float Adjusted Index. U.S. economic growth hovered around 3% on a year-over-year basis during the 12 months ended September 30, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. For the fiscal year, the Bloomberg U.S. Aggregate Float Adjusted Index of investment-grade bonds returned about 11.5%. Since its inception, the Fund outperformed its benchmark by carrying a modest overweight to sectors that are more sensitive to credit risk. Other strategies, including adding duration, positioning for longer-term yields to be higher than short-term yields, and taking advantage of interest rate moves outside the U.S. bond market, such as those in Japan, added value. Selection in emerging markets bonds, high-yield bonds, and investment-grade corporate bonds also contributed to performance. | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: December 12, 2023, Through September 30, 2024 Initial Investment of $10,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns Since Inception ETF Shares Net Asset Value 8.43 % ETF Shares Market Price 8.62 % Bloomberg U.S. Aggregate Float Adjusted Index 7.12% | |
| Performance Inception Date | Dec. 12, 2023 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 1,170,000,000 | |
| Holdings Count | Holding | 1,436 | |
| Advisory Fees Paid, Amount | $ 25,000 | |
| Investment Company Portfolio Turnover | 426% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,436 Portfolio Turnover Rate 426 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 2.7 % Corporate Bonds 30.7 % Sovereign Bonds 11.3 % U.S. Government and Agency Obligations 55.0 % Conventional Mortgage-Backed Securities—Liability for Sale Commitments (1.3 % ) Other Assets and Liabilities—Net 1.6 % | |
| C000246715 [Member] | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Vanguard Core-Plus Bond ETF | |
| Class Name | ETF Shares | |
| Trading Symbol | VPLS | |
| Security Exchange Name | NASDAQ | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Core-Plus Bond ETF (the "Fund") for the period of December 6, 2023 | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447. | |
| Additional Information Phone Number | 800-662-7447 | |
| Additional Information Website | https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature | |
| Expenses [Text Block] | What were the Fund costs for the last period? (based on a hypothetical $10,000 investment) Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment ETF Shares $ 0.20 % 1 1 Annualized. | |
| Expenses Paid, Amount | $ 17 | |
| Expense Ratio, Percent | 0.20% | [2] |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? From its inception on December 6, 2023, through September 30, 2024, the Fund outperformed its benchmark, the Bloomberg U.S. Universal Index. U.S. economic growth hovered around 3% on a year-over-year basis during the 12 months ended September 30, quelling recession fears. The Federal Reserve began cutting interest rates for the first time since early 2020, and the year-over-year rate of consumer price inflation eased to around 2.5%. For the fiscal year, Since its inception, the Fund | |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: December 6, 2023, Through September 30, 2024 Initial Investment of $10,000 | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns Since Inception ETF Shares Net Asset Value 8.69 % ETF Shares Market Price 9.12 % Bloomberg U.S. Universal Bond Index 7.34% | |
| Performance Inception Date | Dec. 06, 2023 | |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. | |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. | |
| Net Assets | $ 249,000,000 | |
| Holdings Count | Holding | 1,262 | |
| Advisory Fees Paid, Amount | $ 12,000 | |
| Investment Company Portfolio Turnover | 472% | |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,262 Portfolio Turnover Rate 472 % Total Investment Advisory Fees $ | |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Asset-Backed/Commercial Mortgage-Backed Securities 4.5 % Corporate Bonds 32.1 % Floating Rate Loan Interests 0.1 % Sovereign Bonds 19.5 % U.S. Government and Agency Obligations 42.6 % Conventional Mortgage-Backed Securities—Liability for Sale Commitments (2.7 % ) Other Assets and Liabilities—Net 3.9 % | |
| [1]Annualized.[2]Annualized. | ||
| Shareholder Report, Line Graph (Details) - USD ($) | 10 Months Ended | 12 Months Ended | 35 Months Ended | 36 Months Ended | 60 Months Ended | 102 Months Ended | 120 Months Ended | ||||||||||||||||
| Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Dec. 12, 2023 | Dec. 06, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Oct. 25, 2021 | Oct. 12, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016 | Mar. 28, 2016 | Sep. 30, 2015 | Sep. 30, 2014 | |
| C000157008 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Institutional Plus Shares | ||||||||||||||||||||||
| Account Value | $ 12,205,729 | $ 12,205,729 | $ 12,205,729 | $ 12,205,729 | $ 12,205,729 | $ 12,205,729 | $ 12,205,729 | $ 12,205,729 | $ 11,088,674 | $ 10,884,181 | $ 12,083,487 | $ 12,099,103 | $ 11,411,821 | $ 10,600,117 | $ 10,680,606 | $ 10,679,653 | $ 10,298,959 | $ 10,000,000 | |||||
| Average Annual Return, Percent | 10.07% | 1.35% | 2.01% | ||||||||||||||||||||
| C000157009 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Institutional Plus Shares | ||||||||||||||||||||||
| Account Value | 12,159,831 | 12,159,831 | $ 12,159,831 | 12,159,831 | 12,159,831 | $ 12,159,831 | 12,159,831 | $ 12,159,831 | 11,274,524 | 10,961,188 | 11,524,984 | 11,447,076 | 10,996,074 | 10,491,279 | 10,421,072 | 10,308,039 | 10,130,377 | 10,000,000 | |||||
| Average Annual Return, Percent | 7.85% | 2.03% | 1.97% | ||||||||||||||||||||
| C000166996 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||||||||
| Account Value | 11,785 | 11,785 | $ 11,785 | 11,785 | 11,785 | $ 11,785 | $ 11,785 | $ 11,785 | 10,530 | 10,418 | 12,265 | 12,269 | 11,261 | 10,224 | 10,360 | 10,357 | $ 10,000 | ||||||
| Average Annual Return, Percent | 11.92% | 0.91% | 1.95% | ||||||||||||||||||||
| C000166995 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||||||||
| Account Value | 59,511 | 59,511 | $ 59,511 | 59,511 | 59,511 | $ 59,511 | $ 59,511 | 59,511 | 53,092 | 52,507 | 61,724 | 61,707 | 56,555 | 51,271 | 51,890 | 51,837 | 50,000 | ||||||
| Average Annual Return, Percent | 12.09% | 1.02% | 2.07% | ||||||||||||||||||||
| C000231055 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||||||||
| Account Value | 10,653 | 10,653 | $ 10,653 | 10,653 | $ 10,653 | $ 10,653 | $ 10,653 | 10,653 | 9,278 | 8,606 | $ 10,000 | ||||||||||||
| Average Annual Return, Percent | 14.82% | 2.15% | |||||||||||||||||||||
| C000231054 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||||||||
| Account Value | 53,417 | 53,417 | $ 53,417 | 53,417 | $ 53,417 | 53,417 | 53,417 | 53,417 | 46,476 | 43,046 | 50,000 | ||||||||||||
| Average Annual Return, Percent | 14.93% | 2.25% | |||||||||||||||||||||
| C000231057 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||||||||
| Account Value | 9,841 | 9,841 | $ 9,841 | $ 9,841 | $ 9,841 | 9,841 | 9,841 | 9,841 | 8,730 | 8,543 | $ 10,000 | ||||||||||||
| Average Annual Return, Percent | 12.73% | (0.55%) | |||||||||||||||||||||
| C000231056 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||||||||
| Account Value | 49,320 | 49,320 | $ 49,320 | $ 49,320 | 49,320 | 49,320 | 49,320 | 49,320 | 43,733 | 42,754 | 50,000 | ||||||||||||
| Average Annual Return, Percent | 12.78% | (0.47%) | |||||||||||||||||||||
| C000246714 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||||||||
| Account Value | 10,843 | $ 10,843 | $ 10,843 | $ 10,843 | 10,843 | 10,843 | 10,843 | 10,843 | $ 10,000 | ||||||||||||||
| Average Annual Return, Percent | 8.43% | ||||||||||||||||||||||
| C000246714 [Member] | Without Sales Load [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||||||||
| Average Annual Return, Percent | 8.62% | ||||||||||||||||||||||
| C000246715 [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||||||||
| Account Value | $ 10,869 | $ 10,869 | $ 10,869 | 10,869 | 10,869 | 10,869 | 10,869 | 10,869 | $ 10,000 | ||||||||||||||
| Average Annual Return, Percent | 8.69% | ||||||||||||||||||||||
| C000246715 [Member] | Without Sales Load [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||||||||
| Average Annual Return, Percent | 9.12% | ||||||||||||||||||||||
| Bloomberg U S Intermediate Aggregate ex Baa Index [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Intermediate Aggregate ex Baa Index | ||||||||||||||||||||||
| Account Value | $ 11,762,673 | 11,762,673 | $ 11,762,673 | 11,762,673 | 11,762,673 | $ 11,762,673 | 11,762,673 | $ 11,762,673 | 10,677,672 | 10,564,925 | 11,914,964 | 11,999,701 | 11,367,973 | 10,541,461 | 10,645,848 | 10,649,625 | 10,315,861 | 10,000,000 | |||||
| Average Annual Return, Percent | 10.16% | 0.68% | 1.64% | ||||||||||||||||||||
| Bloomberg U S Aggregate Bond Index [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | ||||||||||||||||||||||
| Account Value | 12,004,423 | 12,004,423 | $ 12,004,423 | 12,004,423 | 12,004,423 | $ 12,004,423 | 12,004,423 | $ 12,004,423 | 10,759,690 | 10,690,798 | 12,518,445 | 12,631,502 | 11,806,812 | 10,704,668 | 10,836,446 | 10,828,593 | 10,294,080 | 10,000,000 | |||||
| Average Annual Return, Percent | 11.57% | 0.33% | 1.84% | ||||||||||||||||||||
| Bloomberg U S Government Credit 1 3 Year ex Baa Index [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Government/Credit 1–3 Year ex Baa Index | ||||||||||||||||||||||
| Account Value | 11,660,650 | 11,660,650 | $ 11,660,650 | 11,660,650 | 11,660,650 | $ 11,660,650 | 11,660,650 | $ 11,660,650 | 10,895,508 | 10,617,236 | 11,184,265 | 11,168,053 | 10,765,020 | 10,298,114 | 10,285,534 | 10,235,736 | 10,123,648 | 10,000,000 | |||||
| Average Annual Return, Percent | 7.02% | 1.61% | 1.55% | ||||||||||||||||||||
| Bloomberg U S Aggregate Float Adjusted Index [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Float Adjusted Index | ||||||||||||||||||||||
| Account Value | 12,038,123 | $ 12,038,123 | $ 12,038,123 | 12,038,123 | 12,038,123 | $ 12,038,123 | $ 12,038,123 | $ 12,038,123 | $ 10,000 | 10,799,017 | 10,715,540 | $ 12,549,233 | $ 12,666,433 | $ 11,822,449 | $ 10,704,873 | $ 10,838,667 | $ 10,832,563 | $ 10,000 | $ 10,283,255 | $ 10,000,000 | |||
| Average Annual Return, Percent | 7.12% | 11.47% | 0.36% | 1.64% | 1.87% | ||||||||||||||||||
| Multi Sector Income Bond Composite Index [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Multi-Sector Income Bond Composite Index | ||||||||||||||||||||||
| Account Value | 10,462 | $ 10,462 | $ 10,462 | 10,462 | $ 10,462 | $ 10,462 | $ 10,462 | $ 10,462 | 9,163 | 8,548 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 14.18% | 1.53% | |||||||||||||||||||||
| Bloomberg U S Universal Bond Index [Member] | |||||||||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Universal Bond Index | ||||||||||||||||||||||
| Account Value | $ 9,735 | $ 9,735 | $ 9,735 | $ 9,735 | $ 9,735 | $ 9,735 | $ 9,735 | $ 9,735 | $ 10,000 | $ 8,686 | $ 8,549 | $ 10,000 | $ 10,000 | ||||||||||
| Average Annual Return, Percent | 7.34% | 12.08% | (0.91%) | (0.94%) | |||||||||||||||||||
| Shareholder Report, Holdings (Details) | Sep. 30, 2024 |
| C000157008 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.70% |
| C000157008 [Member] | Taxable Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000157008 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 58.10% |
| C000157008 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.90% |
| C000157008 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000157008 [Member] | Conventional Mortgage Backed Securities Liability for Sale Commitments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.10%) |
| C000157008 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000157009 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.30% |
| C000157009 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.10% |
| C000157009 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.10% |
| C000157009 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000157009 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000166996 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.30% |
| C000166996 [Member] | Taxable Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000166996 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 41.30% |
| C000166996 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000166996 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.30% |
| C000166996 [Member] | Conventional Mortgage Backed Securities Liability for Sale Commitments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.90%) |
| C000166996 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000166996 [Member] | Floating Rate Loan Interests [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000166995 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31.30% |
| C000166995 [Member] | Taxable Municipal Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000166995 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 41.30% |
| C000166995 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000166995 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.30% |
| C000166995 [Member] | Conventional Mortgage Backed Securities Liability for Sale Commitments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.90%) |
| C000166995 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000166995 [Member] | Floating Rate Loan Interests [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000231055 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 69.20% |
| C000231055 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000231055 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000231055 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.40% |
| C000231055 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000231055 [Member] | Floating Rate Loan Interests [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000231054 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 69.20% |
| C000231054 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.30% |
| C000231054 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000231054 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.40% |
| C000231054 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000231054 [Member] | Floating Rate Loan Interests [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000231057 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 34% |
| C000231057 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.40% |
| C000231057 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| C000231057 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.40% |
| C000231057 [Member] | Conventional Mortgage Backed Securities Liability for Sale Commitments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.20%) |
| C000231057 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000231057 [Member] | Floating Rate Loan Interests [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000231056 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 34% |
| C000231056 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.40% |
| C000231056 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| C000231056 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.40% |
| C000231056 [Member] | Conventional Mortgage Backed Securities Liability for Sale Commitments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (3.20%) |
| C000231056 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000231056 [Member] | Floating Rate Loan Interests [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000246714 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.70% |
| C000246714 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 55% |
| C000246714 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000246714 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000246714 [Member] | Conventional Mortgage Backed Securities Liability for Sale Commitments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.30%) |
| C000246714 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000246715 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 32.10% |
| C000246715 [Member] | US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 42.60% |
| C000246715 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000246715 [Member] | Sovereign Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.50% |
| C000246715 [Member] | Conventional Mortgage Backed Securities Liability for Sale Commitments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.70%) |
| C000246715 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000246715 [Member] | Floating Rate Loan Interests [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
