S000072616 [Member] Performance Management - TCW METWEST Sustainable Securitized Fund |
Mar. 31, 2026 |
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| Prospectus [Line Items] | |||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||||||||||
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance from year to year. The bar chart shows the performance of the Fund’s Class I shares. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index. Total returns would have been lower if certain fees and expenses had not been waived or reimbursed. The inception date of Class I shares of the Fund is September 30, 2021. Prior to April 27, 2026, the Fund offered Class M shares. On April 27, 2026, all existing Class M shares of the Fund were converted into Class I shares of the Fund. After April 27, 2026, Class M shares were no longer offered by the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information for the Fund is available on our website at www.tcw.com or by calling (800) 386-3829.
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| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. | ||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund’s performance from year to year. The bar chart shows the performance of the Fund’s Class I shares. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index. | ||||||||||||||||||||||||
| Bar Chart [Heading] | Sustainable Securitized Fund – Class I Shares1 Annual Total Returns for Years Ended 12/31 | ||||||||||||||||||||||||
| Bar Chart Closing [Text Block] | Year-to-Date Total Return of Class I Shares as of June 30, 2026: 1.31%
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| Performance Table Heading | Average Annual Total Returns (For Periods Ended December 31, 2025) | ||||||||||||||||||||||||
| Performance Table Narrative | After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. In some cases, returns after taxes on distributions and sale of Fund shares may be higher than returns before taxes because the calculations assume that the investor received a tax deduction for any loss incurred on the sale of the shares.
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| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. | ||||||||||||||||||||||||
| Performance Table Not Relevant to Tax Deferred | After-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. | ||||||||||||||||||||||||
| Performance Table Explanation after Tax Higher | In some cases, returns after taxes on distributions and sale of Fund shares may be higher than returns before taxes because the calculations assume that the investor received a tax deduction for any loss incurred on the sale of the shares. | ||||||||||||||||||||||||
| Performance Availability Website Address [Text] | www.tcw.com | ||||||||||||||||||||||||
| Performance Availability Phone [Text] | (800) 386-3829 | ||||||||||||||||||||||||
| Class I | |||||||||||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year-to-Date Total Return of Class I Shares as of June 30, 2026 | ||||||||||||||||||||||||
| Bar Chart, Year to Date Return | 1.31% | ||||||||||||||||||||||||
| Bar Chart, Year to Date Return, Date | Jun. 30, 2026 | ||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Highest: | ||||||||||||||||||||||||
| Highest Quarterly Return | 8.57% | ||||||||||||||||||||||||
| Highest Quarterly Return, Date | Dec. 31, 2023 | ||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Lowest: | ||||||||||||||||||||||||
| Lowest Quarterly Return | (5.54%) | ||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2022 |