| Form N-CSR Cover | 12 Months Ended |
| Oct. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | TCW ETF Trust |
| Entity Central Index Key | 0001831313 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Oct. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | TCW ETF Trust |
| Entity Central Index Key | 0001831313 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Oct. 31, 2024 |
| C000250838 | |
| Shareholder Report [Line Items] | |
| Fund Name | TCW Flexible Income ETF |
| Trading Symbol | FLXR |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the TCW Flexible Income ETF for the period ended October 31, 2024. |
| Shareholder Report Annual or Semi-Annual | Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund at www.tcw.com/Products/ETFs/FLXR/ |
| Additional Information Phone Number | 800-FUND-TCW (800-386-3829) |
| Expenses Paid, Amount | $ 50 |
| Expense Ratio, Percent | 0.49% |
| Performance Past Does Not Indicate Future [Text] | Past Performance: Performance data represent past performance which does not guarantee future result.</p>" id="sjs-B20"><p style="box-sizing: border-box; color: rgb(0, 0, 0); display: block; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left;">Past Performance: Performance data represent past performance which does not guarantee future result.</p> |
| Performance Inception Date | Nov. 30, 2018 |
| AssetsNet | $ 421,871,982 |
| Holdings Count | Holding | 922 |
| Advisory Fees Paid, Amount | $ 713,380 |
| InvestmentCompanyPortfolioTurnover | 181% |
| Accountant Change Date | Oct. 31, 2024 |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Oct. 31, 2024 | Sep. 30, 2024 | Aug. 31, 2024 | Jul. 31, 2024 | Jun. 30, 2024 | May 31, 2024 | Apr. 30, 2024 | Mar. 31, 2024 | Feb. 29, 2024 | Jan. 31, 2024 | Dec. 31, 2023 | Nov. 30, 2023 | Oct. 31, 2023 | Sep. 30, 2023 | Aug. 31, 2023 | Jul. 31, 2023 | Jun. 30, 2023 | May 31, 2023 | Apr. 30, 2023 | Mar. 31, 2023 | Feb. 28, 2023 | Jan. 31, 2023 | Dec. 31, 2022 | Nov. 30, 2022 | Oct. 31, 2022 | Sep. 30, 2022 | Aug. 31, 2022 | Jul. 31, 2022 | Jun. 30, 2022 | May 31, 2022 | Apr. 30, 2022 | Mar. 31, 2022 | Feb. 28, 2022 | Jan. 31, 2022 | Dec. 31, 2021 | Nov. 30, 2021 | Oct. 31, 2021 | Sep. 30, 2021 | Aug. 31, 2021 | Jul. 31, 2021 | Jun. 30, 2021 | May 31, 2021 | Apr. 30, 2021 | Mar. 31, 2021 | Feb. 28, 2021 | Jan. 31, 2021 | Dec. 31, 2020 | Nov. 30, 2020 | Oct. 31, 2020 | Sep. 30, 2020 | Aug. 31, 2020 | Jul. 31, 2020 | Jun. 30, 2020 | May 31, 2020 | Apr. 30, 2020 | Mar. 31, 2020 | Feb. 29, 2020 | Jan. 31, 2020 | Dec. 31, 2019 | Nov. 30, 2019 | Oct. 31, 2019 | Sep. 30, 2019 | Aug. 31, 2019 | Jul. 31, 2019 | Jun. 30, 2019 | May 31, 2019 | Apr. 30, 2019 | Mar. 31, 2019 | Feb. 28, 2019 | Jan. 31, 2019 | Dec. 31, 2018 | Nov. 30, 2018 | |
| C000250838 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | TCW Flexible Income ETF (FLXR) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 14,454 | $ 14,718 | $ 14,530 | $ 14,262 | $ 13,891 | $ 13,780 | $ 13,561 | $ 13,785 | $ 13,640 | $ 13,760 | $ 13,695 | $ 13,273 | $ 12,776 | $ 12,904 | $ 13,104 | $ 13,097 | $ 12,972 | $ 13,002 | $ 13,125 | $ 13,016 | $ 12,737 | $ 12,963 | $ 12,551 | $ 12,527 | $ 12,171 | $ 12,200 | $ 12,686 | $ 12,887 | $ 12,549 | $ 12,864 | $ 12,892 | $ 13,181 | $ 13,428 | $ 13,574 | $ 13,740 | $ 13,696 | $ 13,740 | $ 13,802 | $ 13,785 | $ 13,763 | $ 13,687 | $ 13,640 | $ 13,593 | $ 13,457 | $ 13,508 | $ 13,523 | $ 13,440 | $ 13,345 | $ 13,116 | $ 13,084 | $ 13,047 | $ 12,992 | $ 12,892 | $ 12,696 | $ 12,517 | $ 12,142 | $ 12,378 | $ 12,180 | $ 11,989 | $ 11,934 | $ 11,861 | $ 11,841 | $ 11,788 | $ 11,519 | $ 11,514 | $ 11,358 | $ 11,155 | $ 11,024 | $ 10,610 | $ 10,291 | $ 10,137 | $ 10,000 |
| TCW Index: Bloomberg U.S. Aggregate Bond Index | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Account Value | $ 10,958 | $ 11,236 | $ 11,088 | $ 10,931 | $ 10,681 | $ 10,581 | $ 10,405 | $ 10,674 | $ 10,577 | $ 10,728 | $ 10,758 | $ 10,361 | $ 9,912 | $ 10,071 | $ 10,334 | $ 10,400 | $ 10,408 | $ 10,445 | $ 10,560 | $ 10,496 | $ 10,236 | $ 10,508 | $ 10,194 | $ 10,240 | $ 9,877 | $ 10,007 | $ 10,459 | $ 10,763 | $ 10,506 | $ 10,674 | $ 10,605 | $ 11,024 | $ 11,339 | $ 11,466 | $ 11,719 | $ 11,749 | $ 11,714 | $ 11,718 | $ 11,820 | $ 11,842 | $ 11,712 | $ 11,630 | $ 11,592 | $ 11,501 | $ 11,647 | $ 11,817 | $ 11,902 | $ 11,886 | $ 11,771 | $ 11,823 | $ 11,830 | $ 11,926 | $ 11,751 | $ 11,677 | $ 11,623 | $ 11,420 | $ 11,488 | $ 11,284 | $ 11,071 | $ 11,079 | $ 11,085 | $ 11,051 | $ 11,111 | $ 10,830 | $ 10,806 | $ 10,672 | $ 10,486 | $ 10,483 | $ 10,286 | $ 10,292 | $ 10,184 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 71 Months Ended |
| Oct. 31, 2024 | Oct. 31, 2024 | Oct. 31, 2024 | |
| C000250838 | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | TCW Flexible Income ETF (FLXR) | ||
| Without Sales Load [Member] | C000250838 | |||
| Average Annual Return [Line Items] | |||
| Average Annual Return, Percent | 12.88% | 3.99% | 6.38% |
| TCW Index: Bloomberg U.S. Aggregate Bond Index | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | ||
| Average Annual Return, Percent | 10.55% | (0.23%) | 1.57% |
| Shareholder Report, Holdings (Details) - C000250838 | Oct. 31, 2024 |
| Uniform Mortgage-Backed Security, TBAFR_01F0506B7 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| U.S. Treasury NotesFR_91282CLQ2 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| U.S. Treasury NotesFR_91282CLS8 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| Government National Mortgage Association, TBAFR_21H0506B3 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| Federal Home Loan Mortgage Corp.FR_3132DWDC4 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| Government National Mortgage Association, TBAFR_21H0426B0 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Government National Mortgage Association, TBAFR_21H0406B4 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Uniform Mortgage-Backed Security, TBAFR_01F0426B4 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| Uniform Mortgage-Backed Security, TBAFR_01F0326B5 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| Government National Mortgage Association, TBAFR_21H0526B9 | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| AssetResidential Mortgage-Backed Securities - Agency | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.90% |
| AssetResidential Mortgage-Backed Securities - Non-Agency | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.10% |
| AssetCorporate Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.40% |
| AssetShort-Term Investments | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.10% |
| AssetAsset-Backed Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.10% |
| AssetCommercial Mortgage-Backed Securities - Non-Agency | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| AssetBank Loans | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| AssetU.S. Treasury Securities | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| AssetForeign Government Bonds | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
