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      id="h_313_1d042f26-83f5-c5ce-81a3-62990f40c669"
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      contextRef="FY2017_C000003066Member_S000001147Member"
      decimals="4"
      id="h_314_7c3313da-2c9d-b562-ed62-665e26e33585"
      unitRef="pure">0.0310</oef:AnnlRtrPct>
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      contextRef="FY2018_C000003066Member_S000001147Member"
      decimals="4"
      id="h_315_dccf7102-732b-31bb-0bf3-77d5d9226375"
      unitRef="pure">-0.0006</oef:AnnlRtrPct>
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      unitRef="pure">0.0895</oef:AnnlRtrPct>
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      contextRef="FY2020_C000003066Member_S000001147Member"
      decimals="4"
      id="h_317_9083c8b3-9d28-ec38-7afc-92bf4f366523"
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      contextRef="FY2021_C000003066Member_S000001147Member"
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      id="h_318_08a0959d-8383-59a6-01f6-5c89a2c61c8c"
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      contextRef="FY2022_C000003066Member_S000001147Member"
      decimals="4"
      id="h_319_9f0af240-bba2-2691-0fca-9187c6c409a3"
      unitRef="pure">-0.1487</oef:AnnlRtrPct>
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      contextRef="FY2023_C000003066Member_S000001147Member"
      decimals="4"
      id="h_320_2a6f011a-bfe7-6ca5-f800-912e562e4487"
      unitRef="pure">0.0576</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2024_C000003066Member_S000001147Member"
      decimals="4"
      id="h_321_762ae395-8068-a72c-9f01-a5713cde3f7f"
      unitRef="pure">0.0072</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2015_S000001151Member_C000003073Member"
      decimals="4"
      id="h_1_d7d1bb2e-7711-d81d-77d3-56897c69ae8e"
      unitRef="pure">0.0042</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2024_S000001151Member_C000003073Member"
      decimals="4"
      id="h_10_2248ac69-c138-704f-b367-1bacafccaab0"
      unitRef="pure">0.0516</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2016_S000001151Member_C000003073Member"
      decimals="4"
      id="h_2_66b39eea-aa2e-ce39-42f8-85dcb57a4c3a"
      unitRef="pure">0.0083</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2017_S000001151Member_C000003073Member"
      decimals="4"
      id="h_3_0e2737f2-5abb-0fe0-59d3-c187e8343622"
      unitRef="pure">0.0083</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2018_S000001151Member_C000003073Member"
      decimals="4"
      id="h_4_3f6335ca-3455-1e60-df37-b59c5eda9c8f"
      unitRef="pure">0.0160</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2019_S000001151Member_C000003073Member"
      decimals="4"
      id="h_5_77b25e30-bee1-40f8-6cee-6314d06abe7b"
      unitRef="pure">0.0293</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2020_S000001151Member_C000003073Member"
      decimals="4"
      id="h_6_c3743958-5fd2-5a72-c8dc-ee592e0ce628"
      unitRef="pure">0.0119</oef:AnnlRtrPct>
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      contextRef="FY2021_S000001151Member_C000003073Member"
      decimals="4"
      id="h_7_d568ba78-1366-2a79-b7f6-1f8d96d80359"
      unitRef="pure">-0.0023</oef:AnnlRtrPct>
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      contextRef="FY2022_S000001151Member_C000003073Member"
      decimals="4"
      id="h_8_e9e5b266-bba1-b853-56a2-4a6fa2da3d31"
      unitRef="pure">-0.0232</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2023_S000001151Member_C000003073Member"
      decimals="4"
      id="h_9_b4e518c5-1580-83da-3a83-c7380eaeccd8"
      unitRef="pure">0.0487</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2015_S000034126Member_C000105185Member"
      decimals="4"
      id="h_1_063ffe25-a079-3f1d-f68d-e584fcd679e4"
      unitRef="pure">-0.0003</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2024_S000034126Member_C000105185Member"
      decimals="4"
      id="h_10_7ec3a38e-b772-853a-acbe-883de7809bdf"
      unitRef="pure">0.0579</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2016_S000034126Member_C000105185Member"
      decimals="4"
      id="h_2_47272aa6-2d58-af75-755f-f51083cc4237"
      unitRef="pure">0.0350</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2017_S000034126Member_C000105185Member"
      decimals="4"
      id="h_3_30cc87ff-b8df-51cc-837a-ae93a99eeb70"
      unitRef="pure">0.0366</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2018_S000034126Member_C000105185Member"
      decimals="4"
      id="h_4_f75a0075-3279-1c1f-16e6-c99029fcc68e"
      unitRef="pure">0.0067</oef:AnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000218402Member"
      id="h_426_72ed0de8_6243_40e2_a2b3_b1f7f4d3a88f"
      unitRef="pure"
      xsi:nil="true"/>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000218402Member"
      id="h_427_6e810dd8_d65a_40f6_9376_996c5186cb4b"
      unitRef="pure"
      xsi:nil="true"/>
    <oef:AnnlRtrPct
      contextRef="FY2019_S000034126Member_C000105185Member"
      decimals="4"
      id="h_5_2ec6aa4c-8b10-9815-0f25-d2f555dc6c51"
      unitRef="pure">0.0617</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2020_S000034126Member_C000105185Member"
      decimals="4"
      id="h_6_32e9ff4c-dbbf-0dcb-a555-50b6c3aeb86e"
      unitRef="pure">0.0451</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2021_S000034126Member_C000105185Member"
      decimals="4"
      id="h_7_aabaa9c7-c3d6-3e08-050c-939edc1032a3"
      unitRef="pure">0.0077</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2022_S000034126Member_C000105185Member"
      decimals="4"
      id="h_8_799b9f26-3afc-eb82-c65e-ba5d1131302d"
      unitRef="pure">-0.0842</oef:AnnlRtrPct>
    <oef:AnnlRtrPct
      contextRef="FY2023_S000034126Member_C000105185Member"
      decimals="4"
      id="h_9_a1b7d91e-4499-849b-845d-d4ae9c3359f9"
      unitRef="pure">0.0747</oef:AnnlRtrPct>
    <dei:EntityInvCompanyType
      contextRef="DefaultContext"
      id="h_01_43482767_d724_4f9f_abf9_4080154af062">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName
      contextRef="DefaultContext"
      id="t_2_8a9eb98e_4d77_ac71_6f55_08cbf4afe22d">TCW METROPOLITAN WEST FUNDS</dei:EntityRegistrantName>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000001149Member"
      id="t_28_df35fcbc_d2ae_e13d_d58d_417a73fa3394">TCW MetWest High Yield Bond Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000001149Member"
      id="t_1_43d757d4_d598_465e_ab06_1778c1b68803">Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000001149Member"
      id="t_2_2fc3e138_4180_4c91_a832_1c76cc0ae35f">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The High Yield Bond Fund seeks to maximize long-term total return consistent with preservation of capital. &lt;/div&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000001149Member"
      id="t_3_549d7b5f_fa34_4a26_b996_99643f51e461">Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000001149Member"
      id="t_4_520c8a1f_767c_4eaf_a5e8_28b164ff3222">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. &lt;/div&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000001149Member"
      id="t_5_316325bd_91de_449b_8a18_2ba8ae5135fc">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="4"
      id="h_1_16ca7801_910d_436a_b71c_fe466260aa3f"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="4"
      id="h_2_7db98682_08d6_4f29_ba37_0a9eccb1a0c2"
      unitRef="pure">0.0050</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="4"
      id="h_3_98ed8ff2_662d_4538_b7e5_bfb6084fca4f"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="4"
      id="h_4_bdf34771_86d6_45f4_a6a0_f0b288c4dd12"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="4"
      id="h_5_b382878e_daa3_4874_8ee4_3761662aea53"
      unitRef="pure">0.0017</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="4"
      id="h_6_de90f0fb_b030_4ea4_b4f0_39bdcaa82141"
      unitRef="pure">0.0014</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="4"
      id="h_7_160e8f6b_5891_4798_9040_41a1b470939d"
      unitRef="pure">0.0092</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="4"
      id="h_8_80a9d56f_2af2_426b_98b5_35ea8006b77d"
      unitRef="pure">0.0064</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="4"
      id="h_9_7ecfd731_e25c_4e49_bf8d_0fdeb256c20c"
      unitRef="pure">-0.0007</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="4"
      id="h_10_1ede000b_bdf2_42b4_9d39_6a7d0e12107d"
      unitRef="pure">-0.0004</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="4"
      id="h_11_3c93259a_6ed7_4f16_8f97_b95b5e12f5ce"
      unitRef="pure">0.0085</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="4"
      id="h_12_375c7246_dd49_41ba_bca1_290572bb2c94"
      unitRef="pure">0.0060</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20250331_20250331_S000001149Member"
      id="t_29_127b18dc_e661_5297_ca94_e9b9db9a7d02">July&#160;31, 2026</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000001149Member"
      id="t_6_85527e53_3c73_4de8_bae6_43c3ab3bc6fd">Example </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000001149Member"
      id="t_7_9b9e8959_92ab_4217_81e7_9d7625668f1e">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. The &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; cost for the Fund reflects the net expenses of the Fund that result from the contractual expense limitation in the first year only (through July&#160;31, 2026). Although your actual costs may be higher or lower, based on these assumptions your costs would be: &lt;/div&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="INF"
      id="h_13_ce5e1f53_dd58_48a9_9301_6692e93101a6"
      unitRef="USD">87</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="INF"
      id="h_14_6e483212_5698_42b3_9368_71a42d988b10"
      unitRef="USD">286</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="INF"
      id="h_15_0dc9d065_59e7_4c2c_b55a_e8b8d39be173"
      unitRef="USD">502</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001149Member_C000003069Member"
      decimals="INF"
      id="h_16_299ed9a1_a2ed_4e65_8aa9_f5b2df3f751d"
      unitRef="USD">1125</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="INF"
      id="h_17_9fd1e1ad_2a1c_4e5e_b652_7f43f98825df"
      unitRef="USD">61</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="INF"
      id="h_18_869c2f6d_d5f4_4509_bb0b_6c692d178302"
      unitRef="USD">201</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="INF"
      id="h_19_51a5a37f_4393_48de_a65c_bd6c58da4d89"
      unitRef="USD">353</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001149Member_C000003068Member"
      decimals="INF"
      id="h_20_69176612_fb32_4415_9e2c_32d13c3b69da"
      unitRef="USD">795</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250331_20250331_S000001149Member"
      id="t_8_ba546410_9a6c_4f6f_b466_db60f6c76336">Portfolio Turnover </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250331_20250331_S000001149Member"
      id="t_9_2f0e9cd7_dce1_437d_aae4_ca86793adee6">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was &lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;76% of the average value of its portfolio. &lt;/div&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250331_20250331_S000001149Member"
      decimals="4"
      id="h_21_18731a42_1bdb_41f5_a1ec_ca79d2882c28"
      unitRef="pure">0.76</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250331_20250331_S000001149Member"
      id="t_10_cf0f6268_9605_48a7_b01e_e627d0e5b0a2">Principal Investment Strategies </oef:StrategyHeading>
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      contextRef="D20250331_20250331_S000001149Member"
      id="t_11_acdbedd1_97a0_4e96_a244_95dd9a8fe61e">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pursues its objective by investing, under normal circumstances, at least 80% of its net assets, plus any borrowings for investment purposes, in high yield bonds (commonly known as &#x201c;junk bonds&#x201d;), which are bonds rated below investment grade or unrated bonds determined by the Adviser to be of comparable quality. The remainder of the Fund&#x2019;s net assets may be invested in investment grade securities rated by one of the nationally recognized statistical rating organizations or, if unrated, determined by the Adviser to be of comparable quality. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Under normal circumstances, the Fund&#x2019;s portfolio duration is two to eight years and the Fund&#x2019;s dollar-weighted average maturity ranges from two to fifteen years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security to changes in interest rates. The Fund invests in the U.S. and abroad, including emerging markets, and may purchase securities of varying maturities issued by domestic and foreign corporations and governments. The Adviser focuses the Fund&#x2019;s portfolio holdings in areas of the bond market that the Adviser believes to be relatively undervalued, based on its analysis of quality, sector, coupon or maturity, and that the Adviser believes offer attractive prospective risk-adjusted returns compared to other segments of the bond market. The Fund may invest up to 25% of its assets in foreign securities &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; that are denominated in U.S. dollars. The Fund may invest up to 15% of its assets&#160;in securities of foreign issuers that are not denominated in U.S. dollars. The Fund may invest up to 10% of its assets in emerging market securities. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund&#x2019;s investments include various types of bonds and debt securities, including corporate bonds, mezzanine investments, swaps (including credit default swaps), currency futures and options, bank loans, preferred stock, mortgage-related and asset-backed securities (including collateralized debt obligations, which in turn include collateralized bond obligations and collateralized loan obligations), foreign securities, U.S. Treasuries and agency securities, private placements, defaulted debt securities and restricted securities, cash and cash equivalents; and common stocks or other equity securities, such as warrants. The Fund&#x2019;s fixed income investments may have interest rates that are fixed, variable or floating. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Derivatives are used in an effort to hedge investments, for risk management, or to increase income or gains for the Fund. The Fund may also seek to obtain market exposure to the securities in which it invests by entering into a series of purchase and sale contracts or by using other investment techniques such as reverse repurchase agreements. The Fund may normally borrow or short sell up to 33 1/3% of the value of its total assets. The Fund may engage in active and&#160;frequent trading&#160;of portfolio securities to achieve its primary investment strategies. &lt;/div&gt;</oef:StrategyNarrativeTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Market Risk:&lt;/span&gt;&#160;the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Junk Bond Risk:&lt;/span&gt; the risk that junk bonds have a higher degree of default risk and may be less liquid and subject to greater price volatility than investment grade bonds. &lt;span style="font-weight:bold"&gt;&lt;/span&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Credit Risk:&lt;/span&gt; the risk that an issuer may default in the payment of principal and/or interest on a security. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security may decline for reasons directly related to the issuer such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      id="t_51_b6d86661_043b_22a6_3d65_0455f20dbbce">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Bank Loan Risk:&lt;/span&gt; the risk of investing in corporate loans made by commercial banks and other financial institutions or institutional investors to companies that need capital to grow or restructure, which includes interest rate risk, liquidity risk and prepayment risk. The Fund may also be subject to the credit risk of other financial institutions and the risks associated with insufficient collateral securing a bank loan, limited available public information about a bank loan and delayed settlement. In addition, bank loans may not be considered securities under U.S. federal securities laws and, as a result, investments in bank loans may have less protection as compared to investments in registered securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001149Member_MezzanineSecuritiesRiskMember"
      id="t_52_500a7315_1067_7307_09b3_a6b122782a67">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mezzanine Securities Risk:&lt;/span&gt; the risk of investing in mezzanine securities, which generally are rated below investment grade or are unrated and present many of the same risks as senior loans, second lien loans and non&#x2011;investment grade bonds. Mezzanine securities present additional risks because they typically are the most subordinated debt obligation in an issuer&#x2019;s capital structure and are often unsecured. Mezzanine securities are also expected to be a highly illiquid investment. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      id="t_53_fcb1998a_1fc3_68b2_4737_01b20a26e12a">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001149Member_DistressedAndDefaultedSecuritiesRiskMember"
      id="t_54_4710e577_038d_2b99_ed28_6711c5087003">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Distressed and Defaulted Securities Risk:&lt;/span&gt; the risk that the repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001149Member_LiquidityRiskMember"
      id="t_55_dd14dcf7_3eb7_8902_172d_8876f6bf03f9">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; the position at an advantageous time or price. Although the Fund is normally able to sell loans within seven days, a substantial portion of the loans held by the Fund may also experience delayed settlement beyond that period, which can impair the ability of the Fund to pay redemptions or to re&#x2011;invest proceeds, or may require the Fund to borrow to meet redemptions. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further constrain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future regulations may further constrain the ability of market participants to create liquidity, particularly in times of increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued. &lt;span style="font-weight:bold"&gt;&lt;/span&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Price Volatility Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Interest Rate Risk:&lt;/span&gt; the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001149Member_FuturesContractsRiskMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between a futures contract and the change in market value of the underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001149Member_SecuritiesSelectionRiskMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Securities Selection Risk:&lt;/span&gt;&#160;the risk that the securities held by the Fund may underperform those held by other funds investing in the same asset class or those included in benchmarks that are representative of the same asset class because of the portfolio managers&#x2019; choice of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Investing Risk:&lt;/span&gt; the risk that Fund share prices will fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and/or other governments. In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Derivatives Risk:&lt;/span&gt;&#160;the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose more than the principal amount invested. These investments can create investment leverage and may create additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Swap Agreements Risk:&lt;/span&gt;&#160;the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so. &lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt; &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Emerging Markets Risk:&lt;/span&gt;&#160;the risk of investing in emerging market countries, which is substantial due to, among other factors, higher brokerage costs in certain countries; different accounting standards; thinner trading markets as compared to those in developed countries; less publicly available and reliable information about issuers as compared to developed markets; the possibility of currency transfer restrictions; and the risk of expropriation, nationalization or other adverse political, economic or social developments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Portfolio Management Risk:&lt;/span&gt;&#160;the risk that an investment strategy may fail to produce the intended results. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Prepayment Risk:&lt;/span&gt;&#160;the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Leverage Risk:&lt;/span&gt;&#160;the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liquidate positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. To the extent required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001149Member_RiskNotInsuredDepositoryInstitutionMember"
      id="t_71_f58cfba5_0206_a03d_cde7_0ec82b7d15e8">&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Your investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, entity, or person. &lt;/div&gt;</oef:RiskTextBlock>
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      id="t_13_e442fed6_d603_4a4b_b041_2c8a6e6ac6ee">Performance Information </oef:BarChartAndPerformanceTableHeading>
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      id="t_34_05e01e1b_3f9a_0543_dba2_c3997df74643">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. 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 dates of Class&#160;M shares and Class&#160;I shares of the Fund are September&#160;30, 2002 and March&#160;31, 2003, respectively. The Fund&#x2019;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)&#160;241&#x2011;4671. &lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="D20250331_20250331_S000001149Member"
      id="t_30_03975229_bc65_a7a2_df9f_960c6e360591">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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      contextRef="D20020930_20241231_C000003069Member_AfterTaxesOnDistributionsMember"
      id="t_77_8bd9e7cb_71d6_cb5b_7c01_7518eabdc860">2002-09-30</oef:PerfInceptionDate>
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      contextRef="D20020930_20241231_C000003069Member_AfterTaxesOnDistributionsAndSalesMember"
      id="t_78_7b0b60e5_fb68_3708_4c27_f3278416666e">2002-09-30</oef:PerfInceptionDate>
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      contextRef="D20030331_20241231_C000003068Member"
      id="t_79_8f8e4034_1232_e294_61ea_ee77c672f68e">2003-03-31</oef:PerfInceptionDate>
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      id="t_31_78018600_ae54_6bc5_10c5_67d43db8c43a">The Fund&#x2019;s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.</oef:PerformancePastDoesNotIndicateFuture>
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      id="t_32_56d2ea26_5b4a_f5ad_9a26_50014f7bbfa4">www.tcw.com</oef:PerformanceAvailabilityWebSiteAddress>
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      id="t_33_3ec54a14_4752_f0b9_f96b_f7b3c76f67d2">(800)&#160;241&#x2011;4671</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20250331_20250331_S000001149Member"
      id="t_35_8640f436_dcd9_082a_9cf1_b4e23707032c">High Yield Bond Fund &#x2013; Class&#160;M Shares Annual Total Returns for Years Ended 12/31 </oef:BarChartHeading>
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      id="t_36_e0f8498a_d352_97a5_09b9_beb80a29b6a3">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 4.70% &lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border-spacing:0px"&gt;
&lt;tr&gt;
&lt;td style="width:14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:3%;"&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:5%;"&gt;&lt;/td&gt;
&lt;td style="width:64%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Highest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;8.60%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter&#160;ended&#160;June 30,&#160;2020)&lt;/td&gt; &lt;/tr&gt;
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&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Lowest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;-10.02%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter&#160;ended&#160;June&#160;30,&#160;2022)&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:BarChartClosingTextBlock>
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      id="t_72_cdec177f_664e_38dc_d2e2_4bc03ab57cce">Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
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      id="t_37_3c7d90bf_8c01_5226_4d54_b9f597a5156e">Average Annual Total Returns (For Periods Ended December&#160;31, 2024) </oef:PerformanceTableHeading>
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      contextRef="FiveY2024_C000003068Member"
      decimals="4"
      id="h_41_fd0f0668_d1b4_46d2_97c2_5c5b6c88da81"
      unitRef="pure">0.0398</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000003068Member"
      decimals="4"
      id="h_42_1aa13c5d_f050_4e21_b732_0b29c03c016c"
      unitRef="pure">0.0434</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20030331_20241231_C000003068Member"
      decimals="4"
      id="h_43_62cfdd8e_34e9_48fc_b23a_926b511891e1"
      unitRef="pure">0.0666</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_BloombergUSUniversalBondIndexMember"
      decimals="4"
      id="h_44_205dbe3e_7266_4ef1_b8ec_ce3e4d04ef9c"
      unitRef="pure">0.0204</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_BloombergUSUniversalBondIndexMember"
      decimals="4"
      id="h_45_65b05fb0_9fbd_4531_b1b5_d6e02ddebce6"
      unitRef="pure">0.0006</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_BloombergUSUniversalBondIndexMember"
      decimals="4"
      id="h_46_442e40ad_3aec_4f3c_9075_856fe55c9c25"
      unitRef="pure">0.0173</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20030331_20241231_BloombergUSUniversalBondIndexMember"
      decimals="4"
      id="h_47_6196cd83_dba5_4e00_bc16_0160b401e697"
      unitRef="pure">0.0345</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_S000001149BloombergUSCorporateHighYieldIndexIssuerCapMember"
      decimals="4"
      id="h_48_79c648be_1dc3_4e03_9772_5f5c7be0ffce"
      unitRef="pure">0.0819</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_S000001149BloombergUSCorporateHighYieldIndexIssuerCapMember"
      decimals="4"
      id="h_49_d229ad0a_4746_4d2e_9c56_7514eed1afea"
      unitRef="pure">0.0419</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_S000001149BloombergUSCorporateHighYieldIndexIssuerCapMember"
      decimals="4"
      id="h_50_2bda522a_ddb4_44e0_a442_543fb70e34a2"
      unitRef="pure">0.0516</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20030331_20241231_S000001149BloombergUSCorporateHighYieldIndexIssuerCapMember"
      decimals="4"
      id="h_51_0050401f_e454_4a80_b0b0_33c8f12274a6"
      unitRef="pure">0.0778</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableFootnotesTextBlock
      contextRef="D20250331_20250331_S000001149Member"
      id="t_43_4132c30b_0dee_33fc_b3f4_775aef52c86b">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:8pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:7.5pt;vertical-align:top;text-align:left;"&gt;&lt;sup style="font-size:75%;vertical-align:top"&gt;1&lt;/sup&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:8pt;font-family:arial;text-align:left;"&gt;The &#x201c;Return After Taxes on Distributions and Sale of Shares&#x201d; is higher than the &#x201c;Return After Taxes on Distributions&#x201d; because of realized losses that would have been sustained upon sale of Fund shares immediately after the relevant period. &lt;/div&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:PerformanceTableFootnotesTextBlock>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20250331_20250331_S000001149Member"
      id="t_42_14f902c6_fdab_c304_e1ec_726501ce65d1">&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after&#x2011;tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts. After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary. 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. &lt;/div&gt;</oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20250331_20250331_S000001149Member"
      id="t_38_80e0c447_5a23_697e_61ad_ddee09c4d47a">After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20250331_20250331_S000001149Member"
      id="t_39_83b80eb9_5ca5_4f43_a420_b4adeffdeb8b">After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20250331_20250331_S000001149Member"
      id="t_40_9d169f00_ab9e_b446_2975_4ab7c9560e8e">After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="D20250331_20250331_S000001149Member"
      id="t_41_2daf20ba_6e50_0ee4_eadd_6c805976d456">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.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000062249Member"
      id="t_79_7a38d4ee_7308_1a75_132e_06dd7ef0c199"> TCW MetWest Investment Grade Credit Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000062249Member"
      id="t_18_993d752c_481d_4bf1_bd53_7f8a9c4b16fb"> Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000062249Member"
      id="t_19_6a441424_63cd_467f_8abd_ed68c0aaf2fe"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Investment Grade Credit Fund seeks to maximize long-term total return.&lt;/div&gt; </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000062249Member"
      id="t_20_7b35e389_a1dd_4134_83d6_5c1c9f81c061"> Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000062249Member"
      id="t_21_3a3d934b_d77c_47cc_99dd_a5d1a5db5651"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.&lt;/div&gt; </oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000062249Member"
      id="t_22_3d6867bc_147b_4087_b179_ea3428081e33"> Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)  </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="4"
      id="h_52_a0c40df3_0a65_4335_bebf_2436d401804d"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="4"
      id="h_53_cca53596_2961_4e38_a7d3_c9107a63fe9b"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="4"
      id="h_54_fcd4e70b_648e_4ecd_b803_7605543a6337"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="4"
      id="h_55_d326b21b_e707_4be8_802b_1b0daf152728"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="4"
      id="h_56_d396a441_d4d4_4ddf_baad_96d6e1d3e0ee"
      unitRef="pure">0.0126</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="4"
      id="h_57_adfd7718_e9d2_4f45_ae73_524cddbc37e5"
      unitRef="pure">0.0126</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="4"
      id="h_58_efd72310_4646_49b0_a833_67395db0e5a7"
      unitRef="pure">0.0186</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="4"
      id="h_59_0bf917b1_c3c5_4cb6_9a35_3221bc93a953"
      unitRef="pure">0.0161</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="4"
      id="h_60_8d293f83_e3b9_430e_b597_5f0a9392ec02"
      unitRef="pure">-0.0116</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="4"
      id="h_61_0149f26f_2cae_417f_a731_5cc8f52d4fbf"
      unitRef="pure">-0.0112</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="4"
      id="h_62_5d67885b_f621_43e8_9cc2_493b07d425ee"
      unitRef="pure">0.0070</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="4"
      id="h_63_d40d8fac_6915_4af3_b590_4f30c3ee914f"
      unitRef="pure">0.0049</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20250331_20250331_S000062249Member"
      id="t_80_ecb64118_3390_7720_e747_33e5329a8fa6">July&#160;31, 2026</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000062249Member"
      id="t_23_ece506b2_2afb_4ea7_b08f_9fc3e3ce193d"> Example  </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000062249Member"
      id="t_24_ff82f947_cb67_4799_a3af_2b8adcf2ab89"> &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. The cost for the Fund reflects the net expenses of the Fund that result from the contractual expense limitation in the first year only (through July&#160;31, 2026). Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="INF"
      id="h_64_71f8e174_b6ad_4b98_b22a_5ee2ba91dfe2"
      unitRef="USD">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="INF"
      id="h_65_717f1619_5903_4aa8_97ae_4609ddac6642"
      unitRef="USD">472</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="INF"
      id="h_66_bd0a9741_f3e5_43f5_b2e5_821ee286434a"
      unitRef="USD">898</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      decimals="INF"
      id="h_67_017fff69_496f_47a9_b7ff_d726e324e744"
      unitRef="USD">2085</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="INF"
      id="h_68_7328f4a9_e4db_410e_b3c8_38825e3af494"
      unitRef="USD">50</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="INF"
      id="h_69_8f37f65e_ea44_42c1_b136_63b99b32ad97"
      unitRef="USD">398</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="INF"
      id="h_70_6a701dae_de81_4f76_b5f7_7f94822d2108"
      unitRef="USD">770</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000062249Member_C000201585Member"
      decimals="INF"
      id="h_71_3a1d6b26_3bc5_4ec4_9eba_3a64888008b4"
      unitRef="USD">1816</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250331_20250331_S000062249Member"
      id="t_25_cc3fdfb3_7a2a_4d12_aca5_230475c9d27f"> Portfolio Turnover </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250331_20250331_S000062249Member"
      id="t_26_9a5a5797_8def_409c_89a2_a38c34eeac18"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was 440% of the average value of its portfolio.&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250331_20250331_S000062249Member"
      decimals="4"
      id="h_72_9f68dbba_e94c_4057_b1be_3d8c835e8606"
      unitRef="pure">4.40</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250331_20250331_S000062249Member"
      id="t_27_b9c982d2_e26f_45a2_915c_738820a76b41"> Principal Investment Strategies </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20250331_20250331_S000062249Member"
      id="t_28_9de1f776_2b0c_4ff5_a689_13a1c7aed3c3"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund pursues its objective by utilizing a flexible investment approach that allocates investments across a range of fixed income sectors. Satisfying the Fund&#x2019;s objective would require it to achieve positive total returns over a full market cycle, &lt;span style="font-style: italic;"&gt;i.e.&lt;/span&gt;, a period of time generally understood to be contained between two consecutive periods of heightened default activity within the global fixed income markets. Total return includes income and capital gains.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund invests, under normal circumstances, at least 90% of its net assets in investment grade fixed income securities or unrated securities determined by the Adviser to be of comparable quality. Up to 10% of the Fund&#x2019;s net assets may be invested in securities rated below investment grade (commonly known as &#x201c;junk bonds&#x201d;) or unrated securities determined by the Adviser to be of comparable quality. The emerging market fixed-income securities in which the Fund may invest are not subject to any minimum credit quality standards, so long as the value of those investments does not cause the Fund to exceed its limit on investments in securities rated below investment grade. The Fund invests, under&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;normal circumstances, at least 80% of its net assets, plus any borrowings for investment purposes, in securities and instruments it regards as bonds in the U.S. and abroad, including emerging markets, and may purchase securities of varying maturities issued by domestic and foreign corporations and governments. A bond is a security or instrument having one or more of the following characteristics: a fixed-income security, a security issued at a discount to its face value, a security that pays interest or a security with a stated principal amount that requires repayment of some or all of that principal amount to the holder of the security. The term &#x201c;bond&#x201d; is interpreted broadly by the Adviser as an instrument or security evidencing a promise to pay some amount rather than evidencing the corporate ownership of equity, unless that equity represents an indirect or derivative interest in one or more bonds. Bonds for this purpose also include bank loans and instruments that are intended to provide one or more of the characteristics of a direct investment in one or more bonds. The Adviser focuses the Fund&#x2019;s portfolio holdings in areas of the bond market that the Adviser believes to be relatively undervalued, based on its analysis of quality, sector, coupon or maturity, and that the Adviser believes offer attractive prospective risk-adjusted returns compared to other segments of the bond market.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The portfolio management team evaluates each investment idea based on the team&#x2019;s view of, among other factors, its potential total return, its risk level and how it fits within the Fund&#x2019;s overall portfolio in determining whether to buy or sell investments. The Adviser allocates the Fund&#x2019;s assets in response to, among other considerations, changing market, financial, economic, and political factors and events that the Fund&#x2019;s portfolio managers believe may affect the values of the Fund&#x2019;s investments. The allocation of capital to sectors and securities within each sector in the Fund is driven primarily by the Adviser&#x2019;s assessment of relative value offered by each sector and security, respectively.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Adviser seeks to actively manage the Fund&#x2019;s risks on an on&#x2011;going basis to mitigate the risks of excessive losses by the portfolio overall. In managing portfolio risk, the Adviser takes into consideration its view of the following factors, among others: the potential relative performance of various market sectors, security selection available within a given sector, the risk/reward equation for different asset classes, liquidity conditions in various market sectors, the shape of the yield curve and projections for changes in the yield curve, potential fluctuations in the overall level of interest rates, and current monetary and fiscal policy.&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund may invest in securities of any maturity, and there is no limit on the weighted average maturity of the Fund&#x2019;s portfolio. The Fund does not have a duration target. However, under normal circumstances, the average portfolio duration varies from two to eight&#160;years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security to changes in interest rates.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund&#x2019;s investments include various types of bonds and debt securities, including corporate bonds, notes, mortgage-related and asset-backed securities (including collateralized debt obligations, which in turn include collateralized bond obligations and collateralized loan obligations), bank loans, municipal securities, U.S. and non&#x2011;U.S. money market securities, private placements and restricted securities. The Fund&#x2019;s fixed income investments may have interest rates that are fixed, variable or floating.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund may sell securities and other instruments short provided that not more than 33 1/3% of its net assets is held as collateral for those transactions. Derivatives are used in an effort to hedge investments, for risk management or to increase income or gains for the Fund. The types of derivative instruments in which the Fund will principally invest are currency and other futures, forward contracts, options, and swap agreements (typically interest rate swaps, index-linked swaps, total return swaps and credit default swaps).&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;Under normal circumstances, the majority of the Fund&#x2019;s investments are denominated in U.S. dollars. However, the Fund has the flexibility to allocate up to 20% of its assets to securities denominated in foreign currencies.&#160;The Fund reserves the right to hedge its exposure to foreign currencies to reduce the risk of loss from fluctuations in currency exchange rates, but is under no obligation to do so under any circumstances.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund may invest up to 10% of its total assets in a combination of convertible bonds, preferred stock, and common stock of domestic and foreign companies.&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000062249Member_RiskLoseMoneyMember"
      id="t_94_3b2d2840_cb0d_63be_85b3_a43208f35c6e">You can lose money by investing in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000062249Member_DebtSecuritiesRiskMember"
      id="t_95_cb8321df_fb2e_7bc9_ce1b_e154ab5aafa1">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Market Risk:&lt;/span&gt;&#160;the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Interest Rate Risk:&lt;/span&gt; the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Credit Risk:&lt;/span&gt; the risk that an issuer may default in the payment of principal and/or interest on a security.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation. &lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security value may decline for reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Price Volatility Risk:&lt;/span&gt;&#160;the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Prepayment Risk:&lt;/span&gt; the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Extension Risk:&lt;/span&gt; the risk that in times of rising interest rates, borrowers may pay off their debt obligations more slowly, causing securities considered short- or intermediate-term to become longer-term securities that fluctuate more widely in response to changes in interest rates than shorter&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&#x2011;term securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Mortgage-Backed Securities Risk:&lt;/span&gt; the risk of investing in mortgage-backed securities, including prepayment risk and extension risk. Mortgage-backed securities react differently to changes in interest rates than other bonds, and some mortgage-backed securities are not backed by the full faith and credit of the U.S. government.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Asset-Backed Securities Risk:&lt;/span&gt; the risk of investing in asset-backed securities, including the risk of loss as a result of the impairment of the value of the underlying financial assets, prepayment risk and extension risk. Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align: top;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-family: arial; font-size: 10pt;"&gt;enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Frequent Trading Risk:&lt;/span&gt;&#160;the risk that frequent trading may lead to increased portfolio turnover and higher transaction costs, which may reduce the Fund&#x2019;s performance and may cause higher levels of current tax liability to shareholders of the Fund.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Foreign Investing Risk:&lt;/span&gt;&#160;the risk that Fund share prices will fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and/or other governments. In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-family: arial; font-size: 10pt; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;U.S. Government Securities Risk:&lt;/span&gt; the risk that debt securities issued or guaranteed by certain U.S. government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. government, and as a result, investments in securities or&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align: top;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-family: arial; font-size: 10pt;"&gt;obligations issued by such entities involve credit risk greater than investments in other types of U.S. government securities.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;U.S. Treasury Obligations Risk:&lt;/span&gt; the risk that the value of U.S. Treasury obligations may decline as a result of changes in interest rates, certain political events in the U.S., and strained relations with certain foreign countries.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between a futures contract and the change in market value of the underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Securities Selection Risk:&lt;/span&gt;&#160;the risk that the securities held by the Fund may underperform those held by other funds investing in the same asset class or those included in benchmarks that are representative of the same asset class because of the portfolio managers&#x2019; choice of securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Derivatives Risk:&lt;/span&gt;&#160;the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose more than the principal amount invested. These investments can create investment leverage and may create additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Swap Agreements Risk:&lt;/span&gt;&#160;the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further constrain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future regulations may further constrain the ability of market participants to create liquidity, particularly in times of increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Leverage Risk:&lt;/span&gt;&#160;the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liquidate positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. If required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Emerging Markets Risk:&lt;/span&gt; the risk of investing in emerging market countries, which is substantial due to, among other factors, higher brokerage costs in certain countries; different accounting standards; thinner trading markets as compared to those in developed countries; less publicly available and reliable information about issuers as compared to developed markets; the possibility of currency transfer restrictions; and the risk of expropriation, nationalization or other adverse political, economic or social developments.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000062249Member_CybersecurityRiskMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-family: arial; font-size: 10pt; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; color: #000000; text-align: left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width: 0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-family: arial; font-size: 10pt;"&gt;providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Portfolio Management Risk:&lt;/span&gt;&#160;the risk that an investment strategy may fail to produce the intended results. &lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Foreign Currency Risk:&lt;/span&gt; the risk that foreign currencies may decline in value relative to the U.S. dollar and affect the Fund&#x2019;s investments in foreign currencies, in securities that are denominated, trade and/or receive revenues in foreign currencies, or in derivatives that provide exposure to foreign currencies.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Large Shareholder Purchase and Redemption Risk:&lt;/span&gt;&#160;the risk that the Fund may experience adverse effects when certain large shareholders purchase or redeem large amounts of shares of the Fund. Such large shareholder redemptions may cause the Fund to sell its securities at times when it would not otherwise do so, which may negatively impact the Fund&#x2019;s net asset value and liquidity. Similarly, large share purchases may adversely affect the Fund&#x2019;s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would. In addition, a large redemption could result in the Fund&#x2019;s current expenses being allocated over a smaller asset base, leading to an increase in the Fund&#x2019;s expense ratio.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000062249Member_RiskNotInsuredDepositoryInstitutionMember"
      id="t_125_12fbd2c7_320d_6a0c_845c_b3bd152f5acc"> &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;Your investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, entity, or person.&lt;/div&gt; </oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_30_a625f0be_2fa7_4517_accb_1a875a6b8dd6"> Performance Information </oef:BarChartAndPerformanceTableHeading>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_85_5764b34d_bedc_ecde_0944_dd06191722bd"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;I shares. Class&#160;I performance is higher than Class&#160;M performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index.&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;Total returns would have been lower&#160;if certain fees and expenses had not been waived or reimbursed. The inception dates of Class&#160;I shares and Class&#160;M shares of the Fund are June&#160;29, 2018. The Fund&#x2019;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 Fund is available on our website at www.tcw.com or by calling (800)&#160;241&#x2011;4671.&lt;/div&gt; </oef:PerformanceNarrativeTextBlock>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_81_dd211789_679c_de78_c8fa_2c156f1fae6e">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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;I shares. Class&#160;I performance is higher than Class&#160;M performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      contextRef="D20180629_20241231_C000201585Member"
      id="t_130_47190b6c_47a4_4aca_0030_5194b9c836d1">2018-06-29</oef:PerfInceptionDate>
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      contextRef="D20180629_20241231_C000201586Member"
      id="t_131_0d91fc48_363f_21dd_65d7_2a2837dd147e">2018-06-29</oef:PerfInceptionDate>
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      contextRef="D20180629_20241231_C000201586Member_AfterTaxesOnDistributionsMember"
      id="t_132_6224aa84_e865_7eb2_1308_762e9a3f66ac">2018-06-29</oef:PerfInceptionDate>
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      contextRef="D20180629_20241231_C000201586Member_AfterTaxesOnDistributionsAndSalesMember"
      id="t_133_aa68fcb0_9a53_2092_74d6_988427326359">2018-06-29</oef:PerfInceptionDate>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_82_a5b1269c_c230_3f18_9f07_51f23bca9bee">The Fund&#x2019;s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.</oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_83_a0fab078_9de9_0824_2170_b9e1189b10b8">www.tcw.com</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_84_ee2a8765_579d_f0a4_80b1_bc1f075b1291">(800)&#160;241&#x2011;4671</oef:PerformanceAvailabilityPhone>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_86_0e0d0689_b2f0_a0b0_a701_e91b8a87a156"> Investment Grade Credit Fund &#x2013; Class&#160;M Shares  Annual Total Returns for Years Ended 12/31 </oef:BarChartHeading>
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      contextRef="D20250331_20250331_S000062249Member"
      id="t_87_cd411c47_a834_8a0f_60c7_9848d69fa1e7"> &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 5.08%&lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; width: 100%; border-spacing: 0px;"&gt;
&lt;tr&gt;
&lt;td style="width: 14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom; width: 3%;"&gt;&lt;/td&gt;
&lt;td style="width: 0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width: 0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom; width: 5%;"&gt;&lt;/td&gt;
&lt;td style="width: 66%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside: avoid; font-family: arial; font-size: 10pt; background-color: #cceeff;"&gt;
&lt;td style="vertical-align: top;"&gt;&lt;span style="font-weight: bold;"&gt;Highest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom; text-align: right;"&gt;6.11%&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom; white-space: nowrap;"&gt;(quarter ended December&#160;31, 2023)&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside: avoid; font-family: arial; font-size: 10pt;"&gt;
&lt;td style="vertical-align: top;"&gt;&lt;span style="font-weight: bold;"&gt;Lowest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom; text-align: right;"&gt;-5.88%&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom; white-space: nowrap;"&gt;(quarter ended March&#160;31, 2022)&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:BarChartClosingTextBlock>
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      id="t_126_263b2934_493c_0580_0331_7b436c5f096a">Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
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      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      id="t_127_19fa8d79_4591_ae8b_67cf_50df0e14807d">2025-06-30</oef:BarChartYearToDateReturnDate>
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      decimals="4"
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      id="h_73_76d2eca5_ccec_48f2_bf6d_e51202f9193e">Highest:</oef:HighestQuarterlyReturnLabel>
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      decimals="4"
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      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      id="t_128_7382052a_e4e1_0004_e896_3cc95d4c8f18">2023-12-31</oef:BarChartHighestQuarterlyReturnDate>
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      contextRef="D20250331_20250331_S000062249Member_C000201586Member"
      id="t_129_73bc2a96_80a2_7764_4c01_79284a1d85f8">2022-03-31</oef:BarChartLowestQuarterlyReturnDate>
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      id="t_88_c8395c78_aba3_4dad_a518_f6bda824c4a2"> Average Annual Total Returns  (For Periods Ended December&#160;31, 2024) </oef:PerformanceTableHeading>
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      unitRef="pure">0.0347</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_80_be50a455_6c1a_4f71_bc21_3530d3996548"
      unitRef="pure">0.0128</oef:AvgAnnlRtrPct>
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      contextRef="D20180629_20241231_C000201586Member"
      decimals="4"
      id="h_81_11079b17_f7b5_49e1_8085_e5b4fc9def88"
      unitRef="pure">0.0323</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_82_03cb0cb4_bff0_45e5_93aa_c337f2e99f15"
      unitRef="pure">0.0166</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_83_cad756ac_44fa_4f1d_a787_ed178ae9ea22"
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      decimals="4"
      id="h_84_f8aa263b_d844_4c9a_ad86_7e629916ac2d"
      unitRef="pure">0.0030</oef:AvgAnnlRtrPct>
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      contextRef="FY2024_C000201586Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_85_61cadb2b_5367_4d19_9834_7eb1bb312756"
      unitRef="pure">0.0203</oef:AvgAnnlRtrPct>
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      contextRef="FiveY2024_C000201586Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_86_2f7d76d9_381c_4df2_99dd_c58ce7b8192e"
      unitRef="pure">-0.0010</oef:AvgAnnlRtrPct>
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      contextRef="D20180629_20241231_C000201586Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_87_0f9605b0_5184_4446_bb0c_f8a384c9fbdb"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000201585Member"
      decimals="4"
      id="h_88_80d798f4_dd1d_450f_b3c9_81e6e22f6bfe"
      unitRef="pure">0.0382</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000201585Member"
      decimals="4"
      id="h_89_9bdb2585_e362_47f9_ac44_8880453e4910"
      unitRef="pure">0.0150</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20180629_20241231_C000201585Member"
      decimals="4"
      id="h_90_e6f0221e_1616_4c34_bad8_c91fe46aa483"
      unitRef="pure">0.0344</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_S000062249BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_91_c8031edc_bb0f_469d_ae7c_d2caab6a7da9"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_S000062249BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_92_14246898_42e4_4e80_97c4_5468506a17b5"
      unitRef="pure">-0.0033</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20180629_20241231_S000062249BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_93_a4b0f463_584b_4a2a_8423_ffe672942ab4"
      unitRef="pure">0.0130</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_BloombergUSIntermediateCreditIndexMember"
      decimals="4"
      id="h_94_b57a46d0_97b6_4fc1_aad7_7200add3efdb"
      unitRef="pure">0.0401</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_BloombergUSIntermediateCreditIndexMember"
      decimals="4"
      id="h_95_6382afc1_7c7b_46c4_a955_9ce3bd330930"
      unitRef="pure">0.0139</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20180629_20241231_BloombergUSIntermediateCreditIndexMember"
      decimals="4"
      id="h_96_469e3b27_8963_417c_ac0f_f04cafba96ba"
      unitRef="pure">0.0272</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableFootnotesTextBlock
      contextRef="D20250331_20250331_S000062249Member"
      id="t_89_47c88a2b_0a0d_be75_ac65_3a5b7fd2fbfc">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 8pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 7.5pt; vertical-align: top; text-align: left;"&gt;&lt;sup style="font-size: 75%; vertical-align: top;"&gt;1&lt;/sup&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 8pt; font-family: arial; text-align: left;"&gt;The &#x201c;After Taxes on Distributions and Sale of Shares&#x201d; return is higher than the &#x201c;After Taxes on Distributions&#x201d; return because of realized losses that would have been sustained upon sale of Fund shares immediately after the relevant period.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:PerformanceTableFootnotesTextBlock>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20250331_20250331_S000062249Member"
      id="t_93_965be9d0_8ea9_4b0d_06fc_8354cfadeb79"> &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after&#x2011;tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;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.&lt;/div&gt; </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20250331_20250331_S000062249Member"
      id="t_90_0f31ff25_45aa_424e_e1e7_1cc34a59e500">After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20250331_20250331_S000062249Member"
      id="t_91_d6fb4732_c453_c1b3_45b0_b83a6f6ef4fb">After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferredarrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="D20250331_20250331_S000062249Member"
      id="t_92_6151863c_778d_e5f3_5787_20347690a468">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.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000001146Member"
      id="t_128_52a842ca_6f0b_7441_05f1_3b0afaa5119c"> TCW MetWest Low Duration Bond Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000001146Member"
      id="t_35_2e494d6b_90a1_4630_b4d2_baa4846d9e6f"> Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_36_85095e67_e0bc_4e39_84d4_ed8153e02e95"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Low Duration Bond Fund seeks to maximize current income, consistent with preservation of capital.&lt;/div&gt; </oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000001146Member"
      id="t_37_7531f2c3_a42e_436e_b300_fd2187074e9a"> Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_38_63a2aac9_196a_49df_935a_414772e662a8"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.&lt;/div&gt; </oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000001146Member"
      id="t_39_2fa29862_bed8_46ae_bc44_12c8eb714e84"> Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="4"
      id="h_97_7d0090c5_c7a8_4da3_a170_7dd6444278e5"
      unitRef="pure">0.0030</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="4"
      id="h_98_b0cfa121_ac63_4946_a47b_b8acef64ed14"
      unitRef="pure">0.0030</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="4"
      id="h_99_d0bad771_4460_4985_91b4_d40a28c86392"
      unitRef="pure">0.0030</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="4"
      id="h_100_22fed5bf_e5be_4165_b01c_874f8a05cfd5"
      unitRef="pure">0.0019</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="4"
      id="h_101_cfefdb01_8f22_4d17_a33b_3893e8d8788b"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="4"
      id="h_102_f4246003_a816_4535_bdb0_ab319ae68622"
      unitRef="pure">0.0019</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="4"
      id="h_103_c3af236a_160c_419f_aeac_60d18dbfc5ac"
      unitRef="pure">0.0014</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="4"
      id="h_104_5945e042_b030_4834_b88a_5ee1bce3ec68"
      unitRef="pure">0.0013</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="4"
      id="h_105_28d43dac_289a_49d0_8c99_2c0abc88c2dd"
      unitRef="pure">0.0042</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="4"
      id="h_106_04e56601_7a89_426b_9599_05388966583e"
      unitRef="pure">0.0063</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="4"
      id="h_107_3eb73863_959a_4506_9631_fd968c2523e6"
      unitRef="pure">0.0043</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="4"
      id="h_108_2b5a3310_00bf_414e_8d19_55ceb8a79ff9"
      unitRef="pure">0.0071</oef:ExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000001146Member"
      id="t_40_9e342ca8_404d_4735_9ba3_717e34487e8b"> Example  </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_41_d6cdc3e5_3ade_4893_bdad_ee02131aaefb"> &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:&lt;/div&gt; </oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="INF"
      id="h_109_43c10560_6b3e_4e31_92fe_22bb85edbfaf"
      unitRef="USD">64</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="INF"
      id="h_110_16729d7d_ae03_41ba_9c0b_ee6f9ddeb2ea"
      unitRef="USD">202</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="INF"
      id="h_111_7498bbde_9644_440c_b8a0_a2279cd9fc77"
      unitRef="USD">351</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001146Member_C000003064Member"
      decimals="INF"
      id="h_112_b0855650_ab2d_4175_b0b5_081aeb112cbd"
      unitRef="USD">786</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="INF"
      id="h_113_9eabb38a_0f3a_4a95_95dd_79f835116483"
      unitRef="USD">44</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="INF"
      id="h_114_c06aebab_7189_4db8_8032_5d6a381de524"
      unitRef="USD">138</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="INF"
      id="h_115_5ca9d32b_9f36_401e_aa7a_efad5fee7915"
      unitRef="USD">241</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001146Member_C000003063Member"
      decimals="INF"
      id="h_116_dec62b19_96c6_466f_baeb_3094a41db856"
      unitRef="USD">542</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="INF"
      id="h_117_a17c173f_1983_471d_b5e9_3cf3855bcd91"
      unitRef="USD">73</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="INF"
      id="h_118_cffac4d2_18e7_45f4_97ce_871d9367d799"
      unitRef="USD">227</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="INF"
      id="h_119_c618bcbf_c1a9_4af5_87fa_f4ead4572604"
      unitRef="USD">395</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001146Member_C000058169Member"
      decimals="INF"
      id="h_120_8284a80e_446c_4a47_b028_f11df4cff0f0"
      unitRef="USD">883</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250331_20250331_S000001146Member"
      id="t_42_0f0f20a2_f2d9_4888_b9ad_e455ee193e20"> Portfolio Turnover </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_43_bbd82c38_f614_42fa_82a8_4f478dfd24ad"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was 454% of the average value of its portfolio.&lt;/div&gt; </oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250331_20250331_S000001146Member"
      decimals="4"
      id="h_121_b5cc3f4c_ed3f_4bcc_a606_059a90920dd8"
      unitRef="pure">4.54</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250331_20250331_S000001146Member"
      id="t_44_86168d5f_a033_433f_a0f4_134290186606"> Principal Investment Strategies </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_45_9db2592a_d6d9_470d_ab17_62743c5a8977"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund pursues its objective by investing, under normal circumstances, at least 70% of its net assets in highly rated fixed income securities or unrated securities determined by the Adviser to be of comparable quality. Up to 30% of the Fund&#x2019;s net assets may be invested in securities rated below highly rated securities or unrated securities determined by the Adviser to be of comparable quality, but not more than 20% of the Fund&#x2019;s net assets may be invested in securities rated below investment grade (commonly known as &#x201c;junk bonds&#x201d;) or unrated securities determined by the Adviser to be of comparable quality. The Fund also invests, under normal circumstances, at least 80% of its net assets, plus any borrowings for investment purposes, in fixed income securities it regards as bonds. A bond is a security or instrument having one or more of the following characteristics: a fixed-income security, a security issued at a discount to its face value, a security that pays interest or a security with a stated principal amount that requires repayment of some or all of that principal amount to the holder of the security. The term &#x201c;bond&#x201d; is interpreted broadly by the Adviser as an instrument or security evidencing a promise to pay some amount rather than evidencing the corporate ownership of equity, unless that equity represents an indirect or derivative interest in one or more bonds. Under normal circumstances, the Fund&#x2019;s portfolio duration is up to three years and the Fund&#x2019;s dollar-weighted average maturity ranges from one to five years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security to changes in interest rates.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund invests in the U.S. and abroad, including emerging markets, and may purchase securities of varying maturities issued by domestic and foreign corporations and governments.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund may invest up to 25% of its assets in foreign securities that are denominated in U.S. dollars. The Fund may invest up to 15% of its assets in securities of foreign issuers that are not denominated in U.S. dollars. The Fund may invest up to 10% of its assets in emerging market securities.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund&#x2019;s investments include various types of bonds and debt securities, including corporate bonds, notes, mortgage-related and asset-backed securities (including collateralized debt obligations, which in turn include collateralized bond&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;obligations and collateralized loan obligations), bank loans, U.S. and non&#x2011;U.S. money market securities, swaps (including credit default swaps), futures, options (including swaptions), municipal securities, defaulted debt securities, private placements and restricted securities. The Fund&#x2019;s fixed income investments may have interest rates that are fixed, variable or floating.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;Derivatives are used in an effort to hedge investments, for risk management, or to increase income or gains for the Fund. The Fund may also seek to obtain market exposure to the securities in which it invests by entering into a series of purchase and sale contracts or by using other investment techniques such as reverse repurchase agreements. The Fund may engage in active and&#160;frequent trading&#160;of portfolio securities to achieve its primary investment strategies.&lt;/div&gt;  &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;The Fund may normally short sell up to 25% of the value of its total assets.&lt;/div&gt; </oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001146Member_RiskLoseMoneyMember"
      id="t_143_bb79cc96_ad0e_9398_b57c_1518192fb904">You can lose money by investing in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001146Member_DebtSecuritiesRiskMember"
      id="t_144_cb035f2f_3e8c_9918_d1fc_8bad6e628caa">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001146Member_MarketRiskMember"
      id="t_145_0b21619d_baed_4d1f_0f0e_011060b6f0ff">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Market Risk:&lt;/span&gt; the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001146Member_CreditRisksMember"
      id="t_146_299fb7ca_2202_77ce_0ffe_7492dd800c5a">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;Credit Risk:&lt;/span&gt; the risk that an issuer may default in the payment of principal and/or interest on a security.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security may decline for reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align: top;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-family: arial; font-size: 10pt;"&gt;a futures contract and the change in market value of the underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Derivatives Risk:&lt;/span&gt; the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose more than the principal amount invested. These investments can create investment leverage and may create additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Prepayment Risk:&lt;/span&gt; the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Extension Risk:&lt;/span&gt; the risk that in times of rising interest rates, borrowers may pay off their debt obligations more slowly, causing securities considered short- or intermediate-term to become longer-term securities that fluctuate more widely in response to changes in interest rates than shorter-term securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Mortgage-Backed Securities Risk:&lt;/span&gt; the risk of investing in mortgage-backed securities, including prepayment risk and extension risk. Mortgage-backed securities react differently to changes in interest rates than other bonds, and some mortgage-backed securities are not backed by the full faith and credit of the U.S. government.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Asset-Backed Securities Risk:&lt;/span&gt; the risk of investing in asset-backed securities, including the risk of loss as a result of the impairment of the value of the underlying financial assets, prepayment risk and extension risk. Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Interest Rate Risk:&lt;/span&gt; the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Junk Bond Risk:&lt;/span&gt; the risk that junk bonds have a higher degree of default risk and may be less liquid and subject to greater price volatility than investment grade bonds.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Price Volatility Risk:&lt;/span&gt;&#160;the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;U.S. Treasury Obligations Risk:&lt;/span&gt; the risk that the value of U.S. treasury obligations may decline as a result of changes in interest rates, certain political events in the U.S., and strained relations with certain foreign countries.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;U.S. Government Securities Risk:&lt;/span&gt; the risk that debt securities issued or guaranteed by certain U.S. government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. government, and as a result, investments in securities or obligations issued by such entities involve credit risk greater than investments in other types of U.S. government securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Frequent Trading Risk:&lt;/span&gt;&#160;the risk that frequent trading may lead to increased portfolio turnover and higher transaction costs, which may reduce the Fund&#x2019;s performance and may cause higher levels of current tax liability to shareholders of the Fund.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Foreign Investing Risk:&lt;/span&gt; the risk that Fund share prices will fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and/or other governments. &lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments.&#x2003;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&#160;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Emerging Markets Risk:&lt;/span&gt; the risk of investing in emerging market countries, which is substantial due to, among other factors, higher brokerage costs in certain countries; different accounting standards; thinner trading markets as compared to those in developed countries; less publicly available and reliable information about issuers as compared to developed markets; the possibility of currency transfer restrictions; and the risk of expropriation, nationalization or other adverse political, economic or social developments.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Securities Selection Risk:&lt;/span&gt;&#160;the risk that the securities held by the Fund may underperform those held by other funds investing in the same asset class or those included in benchmarks that are representative of the same asset class because of the portfolio managers&#x2019; choice of securities.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Leverage Risk:&lt;/span&gt; the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liquidate positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. To the extent required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Portfolio Management Risk:&lt;/span&gt;&#160;the risk that an investment strategy may fail to produce the intended results. &lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Swap Agreements Risk:&lt;/span&gt;&#160;the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Foreign Currency Risk:&lt;/span&gt; the risk that foreign currencies may decline in value relative to the U.S. dollar and affect the Fund&#x2019;s investments in foreign currencies, in securities that are denominated, trade and/or receive revenues in foreign currencies, or in derivatives that provide exposure to foreign currencies. &lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Distressed and Defaulted Securities Risk:&lt;/span&gt; the risk that the repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further constrain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future regulations may further constrain the ability of market participants to create liquidity, particularly in times of&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; color: #000000; text-align: left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width: 0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-family: arial; font-size: 10pt;"&gt;increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time.&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 9pt; vertical-align: top; text-align: left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width: 0.75pt; vertical-align: top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt;&lt;span style="font-weight: bold;"&gt;Below Investment Grade Mortgage-Backed Securities Risk:&lt;/span&gt; the Fund&#x2019;s investments in residential mortgage-backed securities (&#x201c;RMBS&#x201d;) and commercial mortgage-backed securities (&#x201c;CMBS&#x201d;) that are rated below investment grade generally carry greater liquidity risk than their investment grade counterparts. Historically, the markets for such below investment grade securities, and for below investment grade asset-backed securities in general, have been characterized at times by less liquidity than the market for analogous investment grade securities, particularly during the financial crisis of 2007 and 2008.&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001146Member_RiskNotInsuredDepositoryInstitutionMember"
      id="t_175_1538cfc0_d0d4_1de0_773c_0b9cd4545ca0"> &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;Your investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, entity, or person.&lt;/div&gt; </oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="D20250331_20250331_S000001146Member"
      id="t_47_8becad30_cc0c_4eb0_af08_a15c3c0cef38"> Performance Information </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_133_8e0706ae_77f6_7cac_9bb9_7d8a41fa344f"> &lt;div style="margin-top: 6pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;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&#x2019;s performance from year to year. &lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;&lt;span style="font-weight: bold;"&gt;&lt;/span&gt;The bar chart shows the performance of the Fund&#x2019;s Class&#160;M Shares. Class&#160;M performance is lower than Class&#160;I performance and higher than Administrative Class&#160;performance because Class&#160;M has higher expenses than Class&#160;I and lower expenses than Administrative Class. 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 dates of Class&#160;M&#160;shares, Class&#160;I shares and Administrative Class&#160;shares of the Fund are March&#160;31, 1997, March&#160;31, 2000 and September&#160;22, 2009, respectively. The Fund&#x2019;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)&#160;241&#x2011;4671.&lt;/div&gt; </oef:PerformanceNarrativeTextBlock>
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      contextRef="D20250331_20250331_S000001146Member"
      id="t_129_f55770f5_472f_b7ae_4689_628343b300e8">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&#x2019;s performance from year to year. The bar chart shows the performance of the Fund&#x2019;s Class&#160;M Shares. Class&#160;M performance is lower than Class&#160;I performance and higher than Administrative Class&#160;performance because Class&#160;M has higher expenses than Class&#160;I and lower expenses than Administrative Class. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="t_181_3a81fe0e_0077_16d4_29ea_60b74db845ef">1997-03-31</oef:PerfInceptionDate>
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      id="t_182_f4869264_30b8_0717_a6b9_3e7cffbd3e1d">1997-03-31</oef:PerfInceptionDate>
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      contextRef="D19970331_20241231_C000003064Member_AfterTaxesOnDistributionsAndSalesMember"
      id="t_183_09772c6c_870b_1195_218e_fdb84b4496e6">1997-03-31</oef:PerfInceptionDate>
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      contextRef="D20000331_20241231_C000003063Member"
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      contextRef="D20090922_20241231_C000058169Member"
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      id="t_134_10eddb25_35f5_e9d6_20f7_d8cbfb0ad545"> Low Duration Bond Fund &#x2013; Class&#160;M Shares  Annual Total Returns for Years Ended 12/31 </oef:BarChartHeading>
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      id="t_135_ad1eec6a_be48_fdae_4250_53eb07bab1eb"> &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 3.66%&lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 10pt; width: 100%; border-spacing: 0px;"&gt;
&lt;tr&gt;
&lt;td style="width: 14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom; width: 3%;"&gt;&lt;/td&gt;
&lt;td style="width: 0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width: 0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom; width: 5%;"&gt;&lt;/td&gt;
&lt;td style="width: 66%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside: avoid; font-family: arial; font-size: 10pt; background-color: #cceeff;"&gt;
&lt;td style="vertical-align: top;"&gt;&lt;span style="font-weight: bold;"&gt;Highest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom; text-align: right;"&gt;3.81%&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom; white-space: nowrap;"&gt;(quarter&#160;ended&#160;December&#160;31,&#160;2023)&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside: avoid; font-family: arial; font-size: 10pt;"&gt;
&lt;td style="vertical-align: top;"&gt;&lt;span style="font-weight: bold;"&gt;Lowest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom; text-align: right;"&gt;-2.70%&lt;/td&gt;
&lt;td style="white-space: nowrap; vertical-align: bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align: bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align: bottom; white-space: nowrap;"&gt;(quarter ended March&#160;31, 2022)&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:BarChartClosingTextBlock>
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      id="t_177_8b956a8a_a914_5231_8e61_2935728a1756">Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
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      unitRef="pure">0.0174</oef:AvgAnnlRtrPct>
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      decimals="4"
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      decimals="4"
      id="h_139_4e80486e_3d1c_49cd_8b9b_392463f4fcb9"
      unitRef="pure">0.0186</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000003063Member"
      decimals="4"
      id="h_140_0521947a_3d93_4b83_b6a8_641661d0584a"
      unitRef="pure">0.0469</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000003063Member"
      decimals="4"
      id="h_141_e27ae2c7_4da4_45f0_9d68_dfbcf9ac639b"
      unitRef="pure">0.0174</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000003063Member"
      decimals="4"
      id="h_142_6fa48e5b_f5a8_4b18_95f0_440b3b8c4f18"
      unitRef="pure">0.0177</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20000331_20241231_C000003063Member"
      decimals="4"
      id="h_143_81c99133_7909_4ce8_bd65_79ad51d166a9"
      unitRef="pure">0.0298</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000058169Member"
      decimals="4"
      id="h_144_9ac92502_c962_464d_a90e_b9d9f62b1159"
      unitRef="pure">0.0428</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000058169Member"
      decimals="4"
      id="h_145_9bcd25c5_f43a_428d_9749_6ad97c964f6a"
      unitRef="pure">0.0145</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000058169Member"
      decimals="4"
      id="h_146_e0906140_c948_478f_ba66_5a65fca0f2f8"
      unitRef="pure">0.0147</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20090922_20241231_C000058169Member"
      decimals="4"
      id="h_147_e891250c_5fcb_4847_b666_b0e4f655b78b"
      unitRef="pure">0.0263</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_S000001146BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_148_49d160de_175f_4947_b530_908a8e9c5877"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_S000001146BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_149_05de5bd7_9a38_4329_a2eb_f64c3a14de78"
      unitRef="pure">-0.0033</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_S000001146BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_150_96329fd2_8a61_4502_a542_a0bd454d1d47"
      unitRef="pure">0.0135</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20090922_20241231_S000001146BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_151_658cfda4_f3dc_4f9b_95b0_4ce4966f1543"
      unitRef="pure">0.0389</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_ICEBOfA1To3YearUSTreasuryIndexMember"
      decimals="4"
      id="h_152_cf3da178_bbb3_4339_89f2_bf2bfe359a33"
      unitRef="pure">0.0408</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_ICEBOfA1To3YearUSTreasuryIndexMember"
      decimals="4"
      id="h_153_f0963bdb_5280_4244_a1b6_806d808057bf"
      unitRef="pure">0.0140</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_ICEBOfA1To3YearUSTreasuryIndexMember"
      decimals="4"
      id="h_154_3c356b99_cf59_4b7a_a01d_61c1be0377e8"
      unitRef="pure">0.0139</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20090922_20241231_ICEBOfA1To3YearUSTreasuryIndexMember"
      decimals="4"
      id="h_155_57dfbce5_91f0_40c6_a19c_104cb7f130d0"
      unitRef="pure">0.0287</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableFootnotesTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_137_4e57ab4d_9769_fedd_1ebf_140f6c93a6c8">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse: collapse; font-family: arial; font-size: 8pt; border-spacing: 0px; width: 100%;"&gt;
&lt;tr style="page-break-inside: avoid;"&gt;
&lt;td style="width: 7.5pt; vertical-align: top; text-align: left;"&gt;&lt;sup style="font-size: 75%; vertical-align: top;"&gt;1&lt;/sup&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align: top; text-align: left;"&gt; &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 8pt; font-family: arial; text-align: left;"&gt;The &#x201c;After Taxes on Distributions and Sale of Shares&#x201d; return is higher than the &#x201c;After Taxes on Distributions&#x201d; return because of realized losses that would have been sustained upon sale of Fund shares immediately after the relevant period. &lt;sup style="font-size: 75%; vertical-align: top;"&gt;&lt;/sup&gt;&#x2003;&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </oef:PerformanceTableFootnotesTextBlock>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20250331_20250331_S000001146Member"
      id="t_142_32546df2_2fb0_2d1a_497b_1b66c4b316e9"> &lt;div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after&#x2011;tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts. After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary. In some cases, returns after taxes on distributions and sale of Fund shares&lt;/div&gt;  &lt;div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: arial;"&gt;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.&lt;/div&gt; </oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20250331_20250331_S000001146Member"
      id="t_138_5193267f_db01_df3c_071c_425a116db6c8">After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20250331_20250331_S000001146Member"
      id="t_139_27df7b76_f484_88ca_9cbc_e4bf826dc3b4">After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20250331_20250331_S000001146Member"
      id="t_140_2d9d6a37_f514_dc22_9ef5_dacb904d7369">After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="D20250331_20250331_S000001146Member"
      id="t_141_7a9dc42e_143c_d9e2_f967_368e1b6d9424">In some cases, returns after taxes on distributions and sale of Fund sharesmay 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.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000001152Member"
      id="t_183_0d6529e2_31ba_3baf_a351_1167a417fb89">TCW MetWest Strategic Income Fund</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000001152Member"
      id="t_52_d9aa6161_e3cb_44f2_8af9_def203127f45">Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000001152Member"
      id="t_53_438704cb_e939_48b8_95a2_f6c8da369026">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Strategic Income Fund seeks to maximize long-term total return without tracking any particular markets or indices. &lt;/div&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000001152Member"
      id="t_54_0e31e694_63bc_47b2_9c11_90d40c9515c2">Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000001152Member"
      id="t_55_1ebd37c5_1c90_42ae_ab97_df884fd2ab06">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. &lt;/div&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000001152Member"
      id="t_56_9b82a9c3_472b_4e77_820c_df149301615c">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_156_6df5a97f_821d_4968_a8c8_212d31be67df"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="4"
      id="h_157_c7e5f649_0545_4dc4_9aad_b96804afde39"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_158_c0f5f404_4fc0_4287_8937_e28bd2f29a32"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="4"
      id="h_159_70c49a2b_9c81_4e56_b6b7_fd28813c58b8"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_160_ef60b3c7_c7ed_4c3a_b91d_982829582fa7"
      unitRef="pure">0.0061</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="4"
      id="h_161_f7990482_5551_44a4_bc8b_4e3d4e5895b9"
      unitRef="pure">0.0061</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_162_151e6f15_6958_4583_9857_e7427ed95925"
      unitRef="pure">0.0151</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="4"
      id="h_163_a9fb0296_9639_4bbd_83a4_72df35ddd565"
      unitRef="pure">0.0126</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_164_47754cd3_dee1_4c2e_adf8_daf949be7142"
      unitRef="pure">-0.0047</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="4"
      id="h_165_8cfab2a7_7116_46cb_ab2c_cbbb4e724b53"
      unitRef="pure">-0.0046</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_166_c1c88f89_765d_4512_8d12_1678a860d3bd"
      unitRef="pure">0.0104</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="4"
      id="h_167_31ecfe1b_7e07_45e7_b222_43a8bc0a4785"
      unitRef="pure">0.0080</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20250331_20250331_S000001152Member"
      id="t_184_7644f77e_7e9d_f21a_e8c6_c5381d0342fc">July&#160;31, 2026</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000001152Member"
      id="t_57_d2d34f06_5354_465a_ba90_e1e073cacc16">Example </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000001152Member"
      id="t_58_9838a3aa_81a9_49a9_bec3_c230d6976685">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. The &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; cost for the Fund reflects the net expenses of the Fund that result from the contractual expense limitation in the first year only (through July&#160;31, 2026).&#160;Although your actual costs may be higher or lower, based on these assumptions your costs would be: &lt;/div&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="INF"
      id="h_168_90d4c21a_d99a_40a4_af80_742b143e2039"
      unitRef="USD">106</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="INF"
      id="h_169_436cdf67_7dd5_4acf_8585_42c68aa6ae96"
      unitRef="USD">431</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="INF"
      id="h_170_8cc85e3d_058b_4680_ad64_19a3faf65bd3"
      unitRef="USD">779</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="INF"
      id="h_171_e3189611_dfcd_4ce3_a393_b8cf3963508f"
      unitRef="USD">1761</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="INF"
      id="h_172_7617f624_c379_49c0_beb4_96cbe70809c2"
      unitRef="USD">82</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="INF"
      id="h_173_1bbc27f0_70e7_4986_ab8e_2ed0dfda7576"
      unitRef="USD">354</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="INF"
      id="h_174_22704bd9_ed27_47d2_ae2f_d736f0b7db68"
      unitRef="USD">647</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001152Member_C000003074Member"
      decimals="INF"
      id="h_175_0bed335c_0948_42e5_9d86_6a4d8a806a2c"
      unitRef="USD">1482</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250331_20250331_S000001152Member"
      id="t_59_1a53ed69_b4cd_4550_9852_f0aebac6cb8b">Portfolio Turnover </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250331_20250331_S000001152Member"
      id="t_60_c12ee8e3_f6e4_40e7_a1c4_b5dc84dbb2ea">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was 237% of the average value of its portfolio. &lt;/div&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250331_20250331_S000001152Member"
      decimals="4"
      id="h_176_e817fd4d_3312_4661_9d81_e013571c5eb2"
      unitRef="pure">2.37</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250331_20250331_S000001152Member"
      id="t_61_a8a9049c_b2a7_4b82_984c_2d72aaa78b06">Principal Investment Strategies </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20250331_20250331_S000001152Member"
      id="t_62_f9977724_f85d_4435_96c5_b0269bbaba5e">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pursues its objective by utilizing a flexible investment approach that allocates investments across a range of global investment opportunities related to credit, currencies and interest rates. Satisfying the Fund&#x2019;s objective would require it to achieve positive total returns over a full market cycle, &lt;span style="font-style:italic"&gt;i.e.&lt;/span&gt;, a period of time generally understood to be contained between two consecutive periods of heightened default activity within the global fixed income markets. Total return includes income and capital gains, but the Fund&#x2019;s strategy is also intended to produce high income. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;To implement some or all of these strategies, the Fund&#x2019;s portfolio investments typically include corporate bonds, mezzanine investments, bank loans, preferred stock, common stock, warrants, convertible bonds, municipal securities, mortgage-related and asset-backed securities (including collateralized debt obligations, which in turn include collateralized bond obligations and collateralized loan obligations), derivatives of asset-backed securities (including those involving net interest margins), other derivatives including credit default swaps and other swaps, currency futures and other futures, and options, foreign securities, U.S. Treasuries and agency securities, cash and cash equivalents, private placements, defaulted debt securities, restricted securities and unrated securities. The Fund&#x2019;s fixed income investments may have interest rates that are fixed, variable or floating. &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Under normal circumstances, the average dollar-weighted credit quality of the Fund&#x2019;s long-term debt investments is investment grade or unrated and determined by the Adviser to be of comparable quality. The Fund may invest up to 50% of its assets in debt securities rated below investment grade (commonly known as &#x201c;junk bonds&#x201d;), or unrated and determined by the Adviser to be of comparable quality. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund invests in the U.S. and abroad, including emerging markets. The Fund may invest up to 25% of its assets in foreign securities that are denominated in U.S. dollars. Investments in securities of foreign issuers that are not denominated in U.S. dollars are limited to a maximum of 30% of the Fund&#x2019;s assets. The Fund may also invest up to 15% of its assets in emerging market securities. Derivatives are used in an effort to hedge investments, for risk management, or to increase income or gains for the Fund. The Fund may also seek to obtain market exposure to the securities in which it invests by entering into a series of purchase and sale contracts or by using other investment techniques. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund may normally borrow or sell securities short each up to 33 1/3% of the value of its total assets. &lt;/div&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001152Member_RiskLoseMoneyMember"
      id="t_185_86fa5f5c_d5b6_d5c7_2c88_87210c48f4bf">You can lose money by investing in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001152Member_DebtSecuritiesRiskMember"
      id="t_208_0e83f4d6_29e7_4f20_5e53_2d0f92565997">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001152Member_LiquidityRiskMember"
      id="t_209_40702049_eb77_33e3_4d2a_fbc9a4790ea7">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further con-&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; strain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future regulations may further constrain the ability of market participants to create liquidity, particularly in times of increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Price Volatility Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security may decline for reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Credit Risk:&lt;/span&gt; the risk that an issuer may default in the payment of principal and/or interest on a security. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Market Risk:&lt;/span&gt; the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Below Investment Grade Mortgage-Backed Securities Risk:&lt;/span&gt;&#160;the Fund&#x2019;s investments in residential mortgage-backed securities (&#x201c;RMBS&#x201d;) and commercial mortgage-backed securities (&#x201c;CMBS&#x201d;) that are rated below investment grade generally carry greater liquidity risk than their investment grade counterparts. Historically, the markets for such below investment grade securities, and for below investment grade asset-backed securities in general, have been characterized at times by less liquidity than the market for analogous investment grade securities, particularly during the financial crisis of 2007 and 2008. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Junk Bond Risk:&lt;/span&gt;&#160;the risk that junk bonds have a higher degree of default risk and may be less liquid and subject to greater price volatility than investment grade securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Distressed and Defaulted Securities Risk:&lt;/span&gt; the risk that the repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mezzanine Securities Risk:&lt;/span&gt; the risk of investing in mezzanine securities, which generally are rated below investment grade or unrated and present many of the same risks as &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; senior loans, second lien loans and non&#x2011;investment grade bonds. Mezzanine securities present additional risks because they typically are the most subordinated debt obligation in an issuer&#x2019;s capital structure and are often unsecured. Mezzanine securities are also expected to be a highly illiquid investment. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mortgage-Backed Securities Risk:&lt;/span&gt; the risk of investing in mortgage-backed securities, including prepayment risk and extension risk. Mortgage-backed securities react differently to changes in interest rates than other bonds, and some mortgage-backed securities are not backed by the full faith and credit of the U.S. government. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Asset-Backed Securities Risk:&lt;/span&gt; the risk of investing in asset-backed securities, including the risk of loss as a result of the impairment of the value of the underlying financial assets, prepayment risk and extension risk. &lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Securities Selection Risk:&lt;/span&gt; the risk that the securities held by the Fund may underperform other funds investing in the same asset class or benchmarks that are representative of the asset class because of the portfolio managers&#x2019; choice of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Prepayment Risk:&lt;/span&gt; the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Extension Risk:&lt;/span&gt; the risk that in times of rising interest rates, borrowers may pay off their debt obligations more slowly, causing securities considered short- or intermediate-term to become longer-term securities that fluctuate more widely in response to changes in interest rates than shorter-term securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Interest Rate Risk:&lt;/span&gt; the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between a futures contract and the change in market value of the underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Equity Risk:&lt;/span&gt; the risk that stocks and other equity securities generally fluctuate in value more than bonds and may decline in value over short or extended periods as a result of changes in a company&#x2019;s financial condition or in overall market, economic and political conditions. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Derivatives Risk:&lt;/span&gt; the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose more than the principal amount invested. These investments can create investment leverage and may create additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Swap Agreements Risk:&lt;/span&gt; the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Frequent Trading Risk:&lt;/span&gt;&#160;the risk that frequent trading may lead to increased portfolio turnover and higher transaction &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; costs, which may reduce the Fund&#x2019;s performance and may cause higher levels of current tax liability to shareholders of the Fund. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Investing Risk:&lt;/span&gt; the risk that Fund share prices will fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and/or other governments. &lt;span style="font-weight:bold"&gt;&lt;/span&gt;&lt;span style="font-weight:bold"&gt;&lt;/span&gt;In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Emerging Markets Risk:&lt;/span&gt; the risk of investing in emerging market countries, which is substantial due to, among other factors, higher brokerage costs in certain countries; different accounting standards; thinner trading markets as compared to those in developed countries; less publicly available and reliable information about issuers as compared to developed markets; the possibility of currency transfer restrictions; and the risk of expropriation, nationalization or other adverse political, economic or social developments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Absolute Return Investing Risk:&lt;/span&gt; the risk of absolute return investing, which may involve greater risk than investing in a traditional portfolio of stocks or bonds. There is no guarantee that the performance of the Fund will have low correlation with the returns of traditional capital markets, and increased correlation between the Fund&#x2019;s strategies and the traditional capital markets could result in an increase in the Fund&#x2019;s overall volatility. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Event Driven Strategies Risk: &lt;/span&gt;the risk that the success or failure of event driven investing, which involves attempting to predict the outcome of a particular transaction and the best time at which to commit capital to such a transaction, will usually depend on whether the Adviser accurately predicts the outcome and timing of the transaction event. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Portfolio Management Risk:&lt;/span&gt; the risk that an investment strategy may fail to produce the intended results. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Leverage Risk:&lt;/span&gt; the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liquidate positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. To the extent required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Short Sales Risk:&lt;/span&gt; the risk that the use of short sales, which are speculative investments, may cause the Fund to lose money if the value of a security does not go down as the Adviser expects. The risk of loss is theoretically unlimited if the value of the security sold short continues to increase. In addition, the use of borrowing and short sales may cause the Fund to have higher expenses (especially interest and dividend expenses) than those of other mutual funds that do not engage in short sales. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Currency Risk:&lt;/span&gt; the risk that foreign currencies may decline in value relative to the U.S. dollar and affect the Fund&#x2019;s investments in foreign currencies, in securities that are denominated, trade and/or receive revenues in foreign currencies, or in derivatives that provide exposure to foreign currencies. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Money Market/Short-Term Securities Risk:&lt;/span&gt; To the extent the Fund holds cash or invests in money market or short-term securities, the Fund may be less likely to achieve its investment objective. In addition, it is possible that the Fund&#x2019;s investments in these instruments could lose money. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Treasury Obligations Risk:&lt;/span&gt; the risk that the value of U.S. treasury obligations may decline as a result of changes &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; in interest rates, certain political events in the U.S., and strained relations with certain foreign countries. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Government Securities Risk:&lt;/span&gt; the risk that debt securities issued or guaranteed by certain U.S. government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. government, and as a result, investments in securities or obligations issued by such entities involve credit risk greater than investments in other types of U.S. government securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001152Member_RiskNotInsuredDepositoryInstitutionMember"
      id="t_186_dece041d_04c7_dd4e_d925_b483fdb03cc9">&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Your investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, entity, or person. &lt;/div&gt;</oef:RiskTextBlock>
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      id="t_64_7d0008d4_b3d1_4978_8eaa_9f942140c018">Performance Information </oef:BarChartAndPerformanceTableHeading>
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      id="t_187_fd657b53_06bf_591b_6823_ac53f0cf8446">&lt;div style="margin-top:4pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. 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 dates of Class&#160;M shares and Class&#160;I shares of the Fund are June&#160;30, 2003 and March&#160;31, 2004, respectively. The Fund&#x2019;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)&#160;241&#x2011;4671. &lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="D20250331_20250331_S000001152Member"
      id="t_191_45dc4dc8_dfe0_b2b3_7666_42dfde150ccd">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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="t_204_e6994369_cc3f_5878_891e_64745b5e413a">2003-06-30</oef:PerfInceptionDate>
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      contextRef="D20030630_20241231_C000003075Member_AfterTaxesOnDistributionsMember"
      id="t_205_8c2d6bf2_0f23_c182_bb57_5bc456ee5663">2003-06-30</oef:PerfInceptionDate>
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      contextRef="D20030630_20241231_C000003075Member_AfterTaxesOnDistributionsAndSalesMember"
      id="t_206_97e35fe2_7242_1216_3b15_8c902716c9b8">2003-06-30</oef:PerfInceptionDate>
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      contextRef="D20040331_20241231_C000003074Member"
      id="t_207_7a1e3cc0_3f39_b8c0_97ea_e6a64354a625">2004-03-31</oef:PerfInceptionDate>
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      contextRef="D20250331_20250331_S000001152Member"
      id="t_190_245f7b7b_7c46_dddc_76de_8d71b65b1a52">The Fund&#x2019;s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.</oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="D20250331_20250331_S000001152Member"
      id="t_189_74bb9af3_14a4_67f4_b32a_9f1cce52212d">www.tcw.com</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="D20250331_20250331_S000001152Member"
      id="t_188_f0a7d792_88d5_1b4a_6f3e_b026c2d58465">(800)&#160;241&#x2011;4671</oef:PerformanceAvailabilityPhone>
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      id="t_192_5de0aa36_66e8_01d2_2fa2_19060394e53d">Strategic Income Fund &#x2013; Class&#160;M Shares Annual Total Returns for Years Ended 12/31 </oef:BarChartHeading>
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      id="t_193_3b56f5d4_df87_c380_1422_3b471b1d1e7a">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 4.58% &lt;/div&gt;
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&lt;tr&gt;
&lt;td style="width:14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:3%;"&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:5%;"&gt;&lt;/td&gt;
&lt;td style="width:66%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;"&gt;Highest:&lt;/div&gt; &lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;text-align:right;"&gt;7.31%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;(quarter&#160;ended&#160;June&#160;30,&#160;2020)&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;font-weight:bold;"&gt;Lowest:&lt;/div&gt; &lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;text-align:right;"&gt;-7.03%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;(quarter&#160;ended&#160;March&#160;31,&#160;2020)&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:BarChartClosingTextBlock>
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      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      id="t_200_8bb7894c_4961_7261_de9b_d50de6d23dfc">Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      id="t_201_cc38af7c_5d00_53a8_1ded_e46953cc3333">2025-06-30</oef:BarChartYearToDateReturnDate>
    <oef:BarChartYearToDateReturn
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_207_bc3805c0_a4a6_ff96_d12b_451cd65cb85b"
      unitRef="pure">0.0458</oef:BarChartYearToDateReturn>
    <oef:HighestQuarterlyReturnLabel
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      id="h_177_75ec686a_03f8_4815_a94c_912e5e92f882">Highest:</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_178_19e6944f_33bb_44b0_bc8e_381628ab31a5"
      unitRef="pure">0.0731</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      id="t_202_904072e7_81db_6d7d_02ac_36cace96cb9a">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      id="h_180_36f7588f_cc91_4c78_b3dc_ffdc8525a0b4">Lowest:</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      decimals="4"
      id="h_181_6999faf6_4435_462f_a51e_25c6b16a661c"
      unitRef="pure">-0.0703</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="D20250331_20250331_S000001152Member_C000003075Member"
      id="t_203_54474fb1_0498_cf77_6e2b_6ca08d192f87">2020-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="D20250331_20250331_S000001152Member"
      id="t_194_94df19ff_f67e_838d_251a_7507282abdf3">Average Annual Total Returns(For Periods Ended December&#160;31, 2024)</oef:PerformanceTableHeading>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000003075Member"
      decimals="4"
      id="h_183_6f796bd3_4395_4728_89db_4a9328959717"
      unitRef="pure">0.0600</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000003075Member"
      decimals="4"
      id="h_184_663344f9_c269_4a17_ab79_b2a1521723b6"
      unitRef="pure">0.0282</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000003075Member"
      decimals="4"
      id="h_185_1e31c1aa_5625_479e_9d01_de4d8312bba1"
      unitRef="pure">0.0273</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20030630_20241231_C000003075Member"
      decimals="4"
      id="h_186_49dade47_d0fd_443a_b113_0b224571fa03"
      unitRef="pure">0.0383</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000003075Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_187_d7f504d0_f83b_4e88_bb92_5a8e2e2ae429"
      unitRef="pure">0.0304</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000003075Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_188_43908479_7b42_45df_9f7c_28eee1ebbf47"
      unitRef="pure">-0.0042</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000003075Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_189_ef7c56ec_72a3_49cc_9857_fabea768d75c"
      unitRef="pure">0.0034</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20030630_20241231_C000003075Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_190_46143b1a_e998_4511_b399_2f27d4246ffd"
      unitRef="pure">0.0149</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000003075Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_191_a2246ce4_879a_4fd1_b86d_1f2cd0eb8ca6"
      unitRef="pure">0.0351</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000003075Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_192_4829abfd_3093_43c5_ab31_c7de75bd62e5"
      unitRef="pure">0.0074</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000003075Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_193_73509913_519e_4e11_8c08_52bc101cb06a"
      unitRef="pure">0.0103</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20030630_20241231_C000003075Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_194_ed8c4842_bdfc_4b2d_9759_1d588fd9429f"
      unitRef="pure">0.0195</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000003074Member"
      decimals="4"
      id="h_195_be89a57a_c442_4da4_adb7_6ee8a4178d5f"
      unitRef="pure">0.0625</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_C000003074Member"
      decimals="4"
      id="h_196_baffd22b_1790_4f06_a140_d41208838b07"
      unitRef="pure">0.0303</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_C000003074Member"
      decimals="4"
      id="h_197_b856d224_6ecf_4dd7_8d11_7db0c58c8c8a"
      unitRef="pure">0.0297</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20040331_20241231_C000003074Member"
      decimals="4"
      id="h_198_fbd0b487_dd6b_4364_b709_eaf238134377"
      unitRef="pure">0.0347</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_S000001152BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_199_6f957f99_c240_42dc_a613_8a0df953b737"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_S000001152BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_200_e88ae23b_a57c_4493_aa9c_b93096b5d1b5"
      unitRef="pure">-0.0033</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_S000001152BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_201_ca819ccc_5f59_4269_a9f5_e036bdba602d"
      unitRef="pure">0.0135</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20040331_20241231_S000001152BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_202_1d81bb49_3cf9_4dad_b3d2_6cd83e18c882"
      unitRef="pure">0.0298</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_ICEBofAUS3MonthTreasuryBillIndexMember"
      decimals="4"
      id="h_203_e6188a5c_6060_44e9_bc7a_e8e1a264e5f6"
      unitRef="pure">0.0719</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FiveY2024_ICEBofAUS3MonthTreasuryBillIndexMember"
      decimals="4"
      id="h_204_0e520ca7_6155_4c90_9b9c_191755c19327"
      unitRef="pure">0.0444</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="TenY2024_ICEBofAUS3MonthTreasuryBillIndexMember"
      decimals="4"
      id="h_205_5b510bda_2305_40f3_b016_7c0ef8d14550"
      unitRef="pure">0.0376</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20040331_20241231_ICEBofAUS3MonthTreasuryBillIndexMember"
      decimals="4"
      id="h_206_ec7eccda_7016_49f7_9985_1ed78164d678"
      unitRef="pure">0.0364</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20250331_20250331_S000001152Member"
      id="t_195_e319e1ac_487c_55e5_a0a5_70272d1416eb">&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after&#x2011;tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts. After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary. 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. &lt;/div&gt;</oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20250331_20250331_S000001152Member"
      id="t_199_2840b486_282a_d64a_7e42_657e8154cf6b">After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20250331_20250331_S000001152Member"
      id="t_198_ca4c5bee_cbed_5c66_387b_efc8afae92f6">After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts. </oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20250331_20250331_S000001152Member"
      id="t_197_2425acf4_953c_fc15_6aa9_658c216e114f">After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="D20250331_20250331_S000001152Member"
      id="t_196_5bb53cdb_9fdd_90d4_3dce_0c565846ce8a">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.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000072616Member"
      id="t_234_57f1f2f9_f55c_d94d_8b92_95724b9f896f">TCW MetWest Sustainable Securitized Fund</oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000072616Member"
      id="t_69_3f8b98b5_3bf3_4526_92d3_aaae2b5b1fc7">Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000072616Member"
      id="t_70_aab4768c_e556_4f7e_92b9_ce94f79de561">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Sustainable Securitized Fund seeks to maximize current income and achieve above average long-term total return. &lt;/div&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000072616Member"
      id="t_71_17b0a47b_552a_4eda_9388_db738ee46b0b">Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000072616Member"
      id="t_72_92753188_42ba_4be9_b9c2_d9e46e508504">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. &lt;/div&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000072616Member"
      id="t_73_2165198f_5333_46cf_ab0c_23a81c7e0c2f">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_207_9af2fcab_28e1_48e5_859f_89689df65ba1"
      unitRef="pure">0.0040</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="4"
      id="h_208_cb728384_0b88_4538_8d70_9337c28f2a41"
      unitRef="pure">0.0040</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_209_5d67ae6f_fe3a_457f_bbc6_f5c02e3db3f7"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="4"
      id="h_210_14efa176_c2a2_4870_9138_f43e7e9d8d23"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_211_4596f25a_03c1_4d90_981f_24257caaade1"
      unitRef="pure">0.0188</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="4"
      id="h_212_a149c04d_2dab_4bca_bdb9_c70b03bba39e"
      unitRef="pure">0.0213</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_213_6604f8ba_17fc_4870_b87e_e552eee3b4de"
      unitRef="pure">0.0253</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="4"
      id="h_214_78525f6b_7bd3_40f7_9382_ac458a2e87b4"
      unitRef="pure">0.0253</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_215_d52e380e_6be5_484d_81ad_62679b332715"
      unitRef="pure">-0.0183</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="4"
      id="h_216_dbf2736b_bdee_4622_9b28_26c0a34e9380"
      unitRef="pure">-0.0204</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_217_d44261dc_f89c_44db_95a9_98193524e79c"
      unitRef="pure">0.0070</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="4"
      id="h_218_a67f3940_7523_44ab_80c4_7b8da129cfd5"
      unitRef="pure">0.0049</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20250331_20250331_S000072616Member"
      id="t_235_76bc304a_07ae_a2bf_1d68_78b10b19b35a">July&#160;31, 2026</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000072616Member"
      id="t_74_fdbc6bd8_bcf4_4191_8ca5_ffbc94d7f6f8">Example </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000072616Member"
      id="t_75_7382566e_2544_495c_88af_88bb24aca23f">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; and that the Fund&#x2019;s operating expenses remain the same. The cost for the Fund reflects the net expenses of the Fund that result from the contractual expense limitation in the first year only (through July&#160;31, 2026).&#160;Although your actual costs may be higher or lower, based on these assumptions your costs would be: &lt;/div&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="INF"
      id="h_219_ff36bdd8_07c7_437a_a881_ae2452968607"
      unitRef="USD">72</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="INF"
      id="h_220_62d03cce_417d_4697_96c9_a2cf020422d7"
      unitRef="USD">612</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="INF"
      id="h_221_c418dccd_b1f2_46c7_84bc_754c7f60334c"
      unitRef="USD">1180</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="INF"
      id="h_222_885012ef_13a8_4cee_8f28_f3a74c26bafd"
      unitRef="USD">2727</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="INF"
      id="h_223_4b0f50e2_8fc9_4b37_9c55_929e029fd610"
      unitRef="USD">50</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000072616Member_C000228997Member"
      decimals="INF"
      id="h_224_9149ec34_c9e1_42ca_ab51_9b198dde9c8e"
      unitRef="USD">592</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
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    <oef:PortfolioTurnoverHeading
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      id="t_76_59aa1d12_c569_4c08_8662_622852cab027">Portfolio Turnover </oef:PortfolioTurnoverHeading>
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      id="t_77_9b930a0d_3c49_4c88_bb2c_99a0bded3a2d">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s turnover rate was 333% of the average value of its portfolio. &lt;/div&gt;</oef:PortfolioTurnoverTextBlock>
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      unitRef="pure">3.33</oef:PortfolioTurnoverRate>
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      id="t_78_7d46cdc8_7b75_45ed_8ea4_649003fac2b1">Principal Investment Strategies </oef:StrategyHeading>
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      id="t_79_8926b39e_66b2_43f2_b9ef_615e71e8076b">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pursues its objective by investing, under normal circumstances, at least 80% of its net assets in debt securities issued by securitized vehicles and similar instruments that the Adviser believes satisfy its proprietary screening criteria that identify securities with one or more positive environmental, social or sustainable factors. The Fund will invest in securities issued by securitized vehicles including but not limited to residential mortgage-backed securities, commercial mortgage-backed securities, other asset backed securities, real estate related debt, mortgage pass-through securities, as well as floating, variable and fixed-rate securities. The Fund will invest in securities that are issued or guaranteed by the U.S. government or by any of its agencies or instrumentalities and those issued by non&#x2011;governmental entities, as well as unguaranteed securities issued by private entities. Under normal circumstances, the Fund invests at least 80% of its net assets in securities rated investment grade or unrated securities determined by the Adviser to be of comparable quality. The Fund may also invest up to 20% of its assets in below investment grade bonds (&#x201c;junk bonds&#x201d;), which are bonds rated below BBB&#x2011; by Fitch Ratings, Inc. (&#x201c;Fitch&#x201d;), below BBB&#x2011; by S&amp;amp;P Global Ratings (&#x201c;S&amp;amp;P&#x201d;) and below Baa3 by Moody&#x2019;s Investors Service, Inc. (&#x201c;Moody&#x2019;s&#x201d;), or, if unrated, bonds deemed by the Fund&#x2019;s investment advisor to be of comparable quality. The Fund may invest up to 15% of its &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; total assets (measured at the time of investment) in asset-backed and mortgage-related securities rated below investment grade by Moody&#x2019;s, S&amp;amp;P or Fitch, or, if unrated, determined by the Adviser to be of comparable quality. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;In determining whether to buy or sell investments, the portfolio management team evaluates each investment idea based on, among other factors, the team&#x2019;s view of its current income potential, risk level, capital appreciation potential, and how it fits within the Fund&#x2019;s overall portfolio. The allocation of capital to sectors and securities is driven primarily by the Adviser&#x2019;s assessment of relative value offered by each sector and security, respectively, with additional screening to determine whether securities meet the portfolio manager&#x2019;s criteria to invest in securities with one or more positive environmental, social, or sustainable attributes. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;In implementing its sustainable investment strategy, the Adviser evaluates potential investments based on a number of factors, including, but not limited to: support for affordable housing and community development, especially serving low&#x2011; and moderate-income individuals and communities; mortgage-backed securities that support energy efficiency and broader &#x201c;green&#x201d; initiatives; certain non&#x2011;mortgage related asset-backed securities, such as collateralized loan obligations with ESG&#x2011;related exclusionary criteria; and commercial and consumer secured and unsecured debt related to sustainable initiatives, such as solar facilities. Governance review includes, but is not limited to, lending programs, borrower education and disclosure, origination policies, servicing practices, and securitization deal structure. The Adviser uses a combination of proprietary research, third-party data, and engagement with issuers, originators, industry standard setters, and others to assess the sustainable criteria of the assets and to understand the importance of these factors to an investment&#x2019;s performance. Not all of these sources may be used in every instance. Evaluating sustainable attributes and risk factors is part of the investment analysis (alongside traditional financial metrics) and informed investment decision making with the goal of improving risk-adjusted returns, consistent with the Fund&#x2019;s investment objective. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund&#x2019;s investments are not limited to securities labeled &#x201c;sustainable&#x201d; or &#x201c;ESG.&#x201d; An investment&#x2019;s satisfaction of the Adviser&#x2019;s criteria described above is based on the Adviser&#x2019;s proprietary analysis and not that of a third party. The Fund may invest up to 20% of its net assets in securities that the Adviser does not consider to be sustainable investments. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Securities or other instruments may be sold for a number of reasons, including when the portfolio managers believe that &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; (i)&#160;another security or instrument may offer a better investment opportunity, (ii)&#160;there has been a deterioration in the credit fundamentals of an issuer, (iii)&#160;an individual security or instrument has reached its sell target, (iv)&#160;the portfolio should be rebalanced for diversification or portfolio weighting purposes, or (v)&#160;the security no longer meets the Adviser&#x2019;s sustainable criteria. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Under normal circumstances, the Fund&#x2019;s portfolio duration is two to eight years and the Fund&#x2019;s dollar-weighted average maturity ranges from two to fifteen years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security to changes in interest rates. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund invests in the U.S. and international securitized markets, including securities denominated in foreign currencies. The Fund has the flexibility to allocate up to 20% of its total assets to securities of foreign issues denominated in U.S. dollars or foreign currencies. The Fund reserves the right to hedge its exposure to foreign currencies to reduce the risk of loss from fluctuations in currency exchange rates, but is under no obligation to do so under any circumstances. Up to 10% of the Fund&#x2019;s total assets may be invested in emerging markets and instruments that are economically tied to emerging market countries. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund may normally borrow or sell securities short each up to 33 1/3% of the value of its total assets. &lt;/div&gt;</oef:StrategyNarrativeTextBlock>
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&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Market Risk:&lt;/span&gt;&#160;the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Interest Rate Risk:&lt;/span&gt;&#160;the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mortgage-Backed Securities Risk:&lt;/span&gt; the risk of investing in mortgage-backed securities, including prepayment risk and extension risk. Mortgage-backed securities react differently to changes in interest rates than other bonds, and some mortgage-backed securities are not backed by the full faith and credit of the U.S. government. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Asset-Backed Securities Risk:&lt;/span&gt; the risk of investing in asset-backed securities, including the risk of loss as a result of the impairment of the value of the underlying financial assets, prepayment risk and extension risk. Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Prepayment Risk:&lt;/span&gt; the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000072616Member_ExtensionRiskMember"
      id="t_264_cd075f47_550a_615a_0c78_43c354d9aa0b">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Extension Risk:&lt;/span&gt; the risk that in times of rising interest rates, borrowers may pay off their debt obligations more slowly, causing securities considered short- or intermediate-term to become longer-term securities that fluctuate more widely in response to changes in interest rates than shorter-term securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000072616Member_ESGFactorRiskMember"
      id="t_265_ddeafc67_1d23_9815_c26d_3754097d737a">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;ESG Factor Risk:&lt;/span&gt; the risk that the Fund will be exposed to risks related to environmental, social, and governance factors which, if they materialize, can reduce the value of underlying investments held within the Fund and could adversely impact the Fund&#x2019;s performance. In ordinary market conditions, it is not anticipated that any single ESG factor will drive a material negative financial impact on the value of the portfolio. ESG factor risk is defined as an environmental, social, or governance event or condition that if it occurs could cause&#160;an actual or potential material negative impact on the value of the investment. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Sustainable Investing Strategy Risk:&lt;/span&gt; the risk that the Fund&#x2019;s strategy may forgo certain investment opportunities for non&#x2011;financial reasons, and that the Fund&#x2019;s performance will differ from funds that do not include sustainability factors as part of their security selection. Further, investors may differ in their views of what constitutes the sustainable characteristics of a security. As a result, the Fund may invest in securities that do not reflect the beliefs of any particular investor. In evaluating a security, the Adviser is often dependent upon information and data obtained from &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; issuers or from third-party data providers that may be incomplete or inaccurate, which could cause the Adviser to incorrectly assess sustainability risks and opportunities. In addition, the Fund may not be successful in its strategy to invest in a portfolio of securities that, in the Adviser&#x2019;s view, has an aggregate sustainability assessment that is better than the aggregate sustainability of the Fund&#x2019;s benchmark. There is no guarantee that this strategy will be achieved, and such assessment is at the Adviser&#x2019;s discretions. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Below Investment Grade Mortgage-Backed Securities Risk:&lt;/span&gt;&#160;the Fund&#x2019;s investments in residential mortgage-backed securities (&#x201c;RMBS&#x201d;) and commercial mortgage-backed securities (&#x201c;CMBS&#x201d;) that are rated below investment grade generally carry greater liquidity risk than their investment grade counterparts. Historically, the markets for such below investment grade securities, and for below investment grade asset-backed securities in general, have been characterized at times by less liquidity than the market for analogous investment grade securities, particularly during the financial crisis of 2007 and 2008. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      id="t_269_9369c699_cf88_d983_dd61_1432a77a6c58">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security may decline for reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000072616Member_CreditRisksMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Credit Risk:&lt;/span&gt;&#160;the risk that an issuer may default in the payment of principal and/or interest on a security. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further constrain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future regulations may further constrain the ability of market participants to create liquidity, particularly in times of increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Price Volatility Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between a futures contract and the change in market value of the underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Derivatives Risk:&lt;/span&gt;&#160;the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose&#160;more than the principal amount invested. These investments can create investment leverage and may create additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Securities Selection Risk:&lt;/span&gt; the risk that the securities held by the Fund may underperform those held by other funds investing in the same asset class or included in benchmarks that are representative of the same asset class because of the portfolio managers&#x2019; choice of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Frequent Trading Risk:&lt;/span&gt;&#160;the risk that frequent trading may lead to increased portfolio turnover and higher transaction costs, which may reduce the Fund&#x2019;s performance and may cause higher levels of current tax liability to shareholders of the Fund. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Leverage Risk:&lt;/span&gt; the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liquidate positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. To the extent required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Swap Agreements Risk:&lt;/span&gt;&#160;the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Junk Bond Risk:&lt;/span&gt; the risk that junk bonds have a higher degree of default risk and may be less liquid and subject to greater price volatility than investment grade bonds. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Investing Risk:&lt;/span&gt; the risk that Fund share prices may fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and/or other governments. In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Distressed and Defaulted Securities Risk:&lt;/span&gt; the risk that the repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Treasury Obligations Risk:&lt;/span&gt; the risk that the value of U.S. Treasury obligations may decline as a result of changes in interest rates, certain political events in the U.S., and strained relations with certain foreign countries. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Government Securities Risk:&lt;/span&gt; the risk that debt securities issued or guaranteed by certain U.S. government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. government, and as a result, investments in their securities or obligations issued by such entities involve credit risk greater than investments in other types of U.S. government securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Portfolio Management Risk:&lt;/span&gt; the risk that an investment strategy may fail to produce the intended results. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Large Shareholder Purchase and Redemption Risk:&lt;/span&gt; the risk that the Fund may experience adverse effects when certain large shareholders purchase or redeem large amounts of shares of the Fund. Such large shareholder redemptions may cause the Fund to sell its securities at times when it would not otherwise do so, which may negatively impact the Fund&#x2019;s net asset value and liquidity. Similarly, large share purchases may adversely affect the Fund&#x2019;s performance to the extent that the Fund is delayed in investing new cash and is required to maintain a larger cash position than it ordinarily would. In addition, a large redemption could result in the Fund&#x2019;s current expenses being allocated over a smaller asset base, leading to an increase in the Fund&#x2019;s expense ratio. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      id="t_237_cda08ddd_8a42_d93f_a3ea_59742e630ae3">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. 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&#160;M shares and Class&#160;I shares of the Fund is September&#160;30, 2021. The Fund&#x2019;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)&#160;241&#x2011;4671. &lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
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      id="t_241_eee2b1eb_00aa_95c4_c2ac_9a97da7d723c">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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerfInceptionDate
      contextRef="D20210930_20241231_C000228996Member"
      id="t_254_690c9c6a_b686_634e_db61_ed4f7b26e59f">2021-09-30</oef:PerfInceptionDate>
    <oef:PerfInceptionDate
      contextRef="D20210930_20241231_C000228996Member_AfterTaxesOnDistributionsMember"
      id="t_255_ba4322bf_14d7_6dc5_9f18_6c1e371a62c4">2021-09-30</oef:PerfInceptionDate>
    <oef:PerfInceptionDate
      contextRef="D20210930_20241231_C000228996Member_AfterTaxesOnDistributionsAndSalesMember"
      id="t_256_bf15621a_bf50_c880_dd30_0878f3708e08">2021-09-30</oef:PerfInceptionDate>
    <oef:PerfInceptionDate
      contextRef="D20210930_20241231_C000228997Member"
      id="t_257_5e6abfe7_bda4_eeba_57d7_a421641c0221">2021-09-30</oef:PerfInceptionDate>
    <oef:PerformancePastDoesNotIndicateFuture
      contextRef="D20250331_20250331_S000072616Member"
      id="t_240_cb23a08d_13a5_b38c_9110_af2757198eaf">The Fund&#x2019;s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.</oef:PerformancePastDoesNotIndicateFuture>
    <oef:PerformanceAvailabilityWebSiteAddress
      contextRef="D20250331_20250331_S000072616Member"
      id="t_239_cae15d1d_e9eb_bf47_90ec_1794203802aa">www.tcw.com</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceAvailabilityPhone
      contextRef="D20250331_20250331_S000072616Member"
      id="t_238_6c013a62_590e_7652_16c0_16575d76b0fb">(800)&#160;241&#x2011;4671</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20250331_20250331_S000072616Member"
      id="t_242_216425a4_d94f_5cb6_ece6_b640b3318527">Sustainable Securitized Fund &#x2013; Class&#160;M Shares Annual Total Returns for Years Ended 12/31 </oef:BarChartHeading>
    <oef:BarChartClosingTextBlock
      contextRef="D20250331_20250331_S000072616Member"
      id="t_243_43e36650_9794_e2fe_3d6f_93529eab75f8">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 5.16% &lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border-spacing:0px"&gt;
&lt;tr&gt;
&lt;td style="width:14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:3%;"&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:5%;"&gt;&lt;/td&gt;
&lt;td style="width:66%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Highest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;text-align:right;"&gt;8.51%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;"&gt;(quarter&#160;ended&#160;December&#160;31,&#160;2023)&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Lowest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;text-align:right;"&gt;-5.60%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:arial;"&gt;(quarter&#160;ended&#160;March&#160;31,&#160;2022)&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:BarChartClosingTextBlock>
    <oef:YearToDateReturnLabel
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      id="t_293_24244378_ff66_cd07_0487_541b3cc0700e">Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
    <oef:BarChartYearToDateReturnDate
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      id="t_292_27653662_4b9a_47ba_31d2_b1cf70e3f384">2025-06-30</oef:BarChartYearToDateReturnDate>
    <oef:BarChartYearToDateReturn
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_246_93eb09ed_9abd_774a_2916_0f5a16a1cf0f"
      unitRef="pure">0.0516</oef:BarChartYearToDateReturn>
    <oef:HighestQuarterlyReturnLabel
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      id="h_228_c04aae9e_11d9_4e3a_9ffb_4dcfc03de690">Highest:</oef:HighestQuarterlyReturnLabel>
    <oef:BarChartHighestQuarterlyReturn
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_229_34a555ed_c884_46b7_92d9_c4ef0fd36485"
      unitRef="pure">0.0851</oef:BarChartHighestQuarterlyReturn>
    <oef:BarChartHighestQuarterlyReturnDate
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      id="t_251_ef57b9d3_82a0_e190_6e32_1925b99baed8">2023-12-31</oef:BarChartHighestQuarterlyReturnDate>
    <oef:LowestQuarterlyReturnLabel
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      id="h_231_8bbd51f3_b6c7_4c2d_9841_1d5506d43e56">Lowest:</oef:LowestQuarterlyReturnLabel>
    <oef:BarChartLowestQuarterlyReturn
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      decimals="4"
      id="h_232_9027c698_6bf1_43b4_94e4_8ba85a043c41"
      unitRef="pure">-0.0560</oef:BarChartLowestQuarterlyReturn>
    <oef:BarChartLowestQuarterlyReturnDate
      contextRef="D20250331_20250331_S000072616Member_C000228996Member"
      id="t_252_a288839f_271c_7f63_d331_510ba348f0aa">2022-03-31</oef:BarChartLowestQuarterlyReturnDate>
    <oef:PerformanceTableHeading
      contextRef="D20250331_20250331_S000072616Member"
      id="t_244_3312aae1_d496_1a11_c943_132b0d242344">Average Annual Total Returns (For Periods Ended December&#160;31, 2024) </oef:PerformanceTableHeading>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000228996Member"
      decimals="4"
      id="h_234_b90f7501_c127_4186_a78a_d83fae7d33b9"
      unitRef="pure">0.0817</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20210930_20241231_C000228996Member"
      decimals="4"
      id="h_235_d60aaf2a_110d_4d97_95ff_da502a2e3e18"
      unitRef="pure">-0.0051</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000228996Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_236_9f49ff53_50ef_49e9_9823_f275154de6c5"
      unitRef="pure">0.0508</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20210930_20241231_C000228996Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_237_875c8783_5551_4775_a67e_fb96434d9156"
      unitRef="pure">-0.0228</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000228996Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_238_d0895546_d1f1_43ed_9562_03cbf8a5548d"
      unitRef="pure">0.0478</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20210930_20241231_C000228996Member_AfterTaxesOnDistributionsAndSalesMember"
      decimals="4"
      id="h_239_df3c657e_12e3_4899_9cfc_84619aa173c6"
      unitRef="pure">-0.0116</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_C000228997Member"
      decimals="4"
      id="h_240_4d2d3755_ba22_4cc7_9e8e_a031fa93d4bb"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20210930_20241231_C000228997Member"
      decimals="4"
      id="h_241_4fa0ad3f_309d_4ef3_94fa_8b325402de7c"
      unitRef="pure">-0.0042</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_S000072616BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_242_175d7376_f341_446d_a915_70453a9e5452"
      unitRef="pure">0.0125</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20210930_20241231_S000072616BloombergUSAggregateBondIndexMember"
      decimals="4"
      id="h_243_4be8e018_5b77_48db_83a3_18b312617a97"
      unitRef="pure">-0.0222</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="FY2024_BloombergUSMortgageBackedSecuritiesMBSIndexMember"
      decimals="4"
      id="h_244_3948964a_1a8c_4e7e_b902_aa194b6c338e"
      unitRef="pure">0.0120</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="D20210930_20241231_BloombergUSMortgageBackedSecuritiesMBSIndexMember"
      decimals="4"
      id="h_245_9e1cd81e_02b6_42e2_88b0_a3c44406756c"
      unitRef="pure">-0.0208</oef:AvgAnnlRtrPct>
    <oef:PerformanceTableFootnotesTextBlock
      contextRef="D20250331_20250331_S000072616Member"
      id="t_253_d94d0fdb_2f02_1cd4_d4b8_064b4b19a93e">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:8pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:7.5pt;vertical-align:top;text-align:left;"&gt;&lt;sup style="font-size:75%;vertical-align:top"&gt;1&lt;/sup&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:8pt;font-family:arial;text-align:left;"&gt;The &#x201c;After Taxes on Distributions and Sale of Shares&#x201d; return is higher than the &#x201c;After Taxes on Distributions&#x201d; return because of realized losses that would have been sustained upon sale of Fund shares immediately after the relevant period. &lt;/div&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:PerformanceTableFootnotesTextBlock>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20250331_20250331_S000072616Member"
      id="t_245_396cdd36_5bf6_0e20_751a_091598a6be25">&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after&#x2011;tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts. After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary. 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. &lt;/div&gt;</oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20250331_20250331_S000072616Member"
      id="t_249_f6a30429_45ed_b580_3bda_2e427c793ba8">After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20250331_20250331_S000072616Member"
      id="t_248_7fd25990_31e5_9b0e_91a0_bf401a89c0bb">After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20250331_20250331_S000072616Member"
      id="t_247_1d135520_75d9_5fc2_e447_948698161e41">After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="D20250331_20250331_S000072616Member"
      id="t_246_d0df9c46_e743_2075_9bde_de56a0684899">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.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000001147Member"
      id="t_293_7cc94c7a_7eac_5d8f_63e8_354e6b30f1a1">TCW MetWest Total Return Bond Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000001147Member"
      id="t_86_57ff3d10_6963_4681_b25f_70dadfaf5d8a">Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000001147Member"
      id="t_87_83c01c8e_1697_4554_b3b9_61bab8f5ea2f">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Total Return Bond Fund seeks to maximize long-term total return. &lt;/div&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000001147Member"
      id="t_88_5ff9dc16_a58f_4dd9_96d0_6ef660d02e7f">Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000001147Member"
      id="t_89_32763257_2e4a_4f6e_a5e0_765d0ab09477">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. &lt;/div&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000001147Member"
      id="t_90_247c5674_295d_468f_9c35_11f77e7880fc">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="4"
      id="h_246_e6f63f1b_fbcb_41c3_bf67_0c8f19bb37b9"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="4"
      id="h_247_466ae992_3b00_4d46_8cc1_95722f296623"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="4"
      id="h_248_3c1cfc5c_a38a_44ee_805e_07aeaee68e02"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="4"
      id="h_249_c189074d_28dd_41ae_b525_185b60de9f1a"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="4"
      id="h_250_18a7c88d_a6c8_423f_bd5c_e3003cd1d561"
      unitRef="pure">0.0035</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="4"
      id="h_251_adb9b35f_eed1_4565_b3a8_7f59490c796d"
      unitRef="pure">0.0021</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="4"
      id="h_252_b390f9cf_9335_4f57_8f3e_9d810129c8eb"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="4"
      id="h_253_33ffad50_0faf_4be7_8512_1e9b6e77b203"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="4"
      id="h_254_a3df6c67_71b9_4b99_80c0_6b65e5d8712f"
      unitRef="pure">0.0021</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="4"
      id="h_255_b1b132f7_346e_429a_b029_120f2955b231"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="4"
      id="h_256_f7b4fb50_0600_4ed2_a8d8_dc63e0a09f42"
      unitRef="pure">0.0009</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="4"
      id="h_257_9e77fa7a_bd18_4b79_bbb4_58c1dd32d6bc"
      unitRef="pure">0.0009</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="4"
      id="h_258_6ba5636d_0f2a_4e2b_8773_f41066a0cc4b"
      unitRef="pure">0.0016</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="4"
      id="h_259_9553831d_4d4c_459e_8c57_c811343fe3e4"
      unitRef="pure">0.0042</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="4"
      id="h_260_fa7e7b35_e2a6_4676_8107_e4e16064557b"
      unitRef="pure">0.0002</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="4"
      id="h_261_29938e37_f769_447a_98ab_bdb374bed89d"
      unitRef="pure">0.0065</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="4"
      id="h_262_e4502c14_8ddf_497a_a325_f47b99fec765"
      unitRef="pure">0.0044</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="4"
      id="h_263_882810f4_2806_4600_a0ef_685db4fc5e1a"
      unitRef="pure">0.0051</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="4"
      id="h_264_a36a9819_1d4e_47e5_8b50_b97710bc50b6"
      unitRef="pure">0.0078</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="4"
      id="h_265_2686a5f6_77f3_48ef_9ae6_38be20c17d68"
      unitRef="pure">0.0037</oef:ExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000001147Member"
      id="t_91_668f9056_9588_4d29_8edb_2acc349b9002">Example </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000001147Member"
      id="t_92_8d2f9550_476d_42b3_bbe1_28da729c42f9">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: &lt;/div&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="INF"
      id="h_266_0ad98a0a_9026_48d5_b871_06267c2875bc"
      unitRef="USD">66</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="INF"
      id="h_267_f6aadc88_af75_4ec7_a7c2_6069e4859e61"
      unitRef="USD">208</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="INF"
      id="h_268_f9f9e02e_1419_44ef_93d3_0d7e505a1281"
      unitRef="USD">362</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
      decimals="INF"
      id="h_269_40dd5737_fca4_43d1_8430_7b5b979370ed"
      unitRef="USD">810</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="INF"
      id="h_270_62ca4759_41f7_46d5_8c07_9fdd84afd03d"
      unitRef="USD">45</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="INF"
      id="h_271_593d535f_73cb_4604_8460_ede8766dfd4f"
      unitRef="USD">141</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="INF"
      id="h_272_20f276f3_ec1b_4712_b683_647dd12f3e06"
      unitRef="USD">246</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001147Member_C000003065Member"
      decimals="INF"
      id="h_273_cef9516f_6e6a_4f63_88c9_b75c4ba20744"
      unitRef="USD">555</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="INF"
      id="h_274_d56f5b1b_f4c5_4418_a7a5_78f768eb2ab1"
      unitRef="USD">52</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="INF"
      id="h_275_913bd5cb_efd9_4b6f_93cc_64ed14cb57e1"
      unitRef="USD">164</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="INF"
      id="h_276_7c6cc0e5_ad89_4e7d_9ff8_186fa8ce7ebf"
      unitRef="USD">285</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001147Member_C000218401Member"
      decimals="INF"
      id="h_277_83ae1848_1ec2_4a26_93e7_db57c38ac1a9"
      unitRef="USD">640</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="INF"
      id="h_278_39320ee5_b9ff_4d04_b41a_2a87783fcff4"
      unitRef="USD">80</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="INF"
      id="h_279_1cac398f_dae8_41a7_9562_b0693b852de9"
      unitRef="USD">249</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="INF"
      id="h_280_132d0162_d26c_485f_9094_75d3b5e0eb98"
      unitRef="USD">433</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001147Member_C000058170Member"
      decimals="INF"
      id="h_281_7e15e275_613e_404f_9108_e7e1a8bd1a9d"
      unitRef="USD">966</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="INF"
      id="h_282_420df07b_1fa3_4d10_8916_d9a681400e0d"
      unitRef="USD">38</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="INF"
      id="h_283_23223c53_a0b9_4d6c_84fe_46765dfa9814"
      unitRef="USD">119</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="INF"
      id="h_284_03966df6_bd97_49bb_8c80_9586a2819e01"
      unitRef="USD">208</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001147Member_C000102908Member"
      decimals="INF"
      id="h_285_83257d76_45ad_4892_a0e1_9f6dab293d77"
      unitRef="USD">468</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250331_20250331_S000001147Member"
      id="t_93_62cb986b_927f_4108_bddb_b4da2cf1355e">Portfolio Turnover </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250331_20250331_S000001147Member"
      id="t_94_ea9d6379_669c_4233_abc3_0d675a9d82ec">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; in annual fund operating expenses or in the example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was 418% of the average value of its portfolio. &lt;/div&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250331_20250331_S000001147Member"
      decimals="4"
      id="h_286_65221122_0ebb_4461_a2ca_9663830d0348"
      unitRef="pure">4.18</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250331_20250331_S000001147Member"
      id="t_95_39fc84e3_4547_4f99_87ba_5f02a3fb13f0">Principal Investment Strategies </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20250331_20250331_S000001147Member"
      id="t_96_2d2f27a6_6df0_45b6_9953_ba03bf9dd45b">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pursues its objective by investing, under normal circumstances, at least 80% of its net assets in investment grade fixed income securities or unrated securities determined by the Adviser to be of comparable quality. Up to 20% of the Fund&#x2019;s net assets may be invested in securities rated below investment grade (commonly known as &#x201c;junk bonds&#x201d;) or unrated securities determined by the Adviser to be of comparable quality. The Fund also invests, under normal circumstances, at least 80% of its net assets, plus any borrowings for investment purposes, in fixed income securities it regards as bonds. A bond is a security or instrument having one or more of the following characteristics: a fixed-income security, a security issued at a discount to its face value, a security that pays interest or a security with a stated principal amount that requires repayment of some or all of that principal amount to the holder of the security. The term &#x201c;bond&#x201d; is interpreted broadly by the Adviser as an instrument or security evidencing a promise to pay some amount rather than evidencing the corporate ownership of equity, unless that equity represents an indirect or derivative interest in one or more bonds. Under normal circumstances, the Fund&#x2019;s portfolio duration is two to eight years and the Fund&#x2019;s dollar-weighted average maturity ranges from two to fifteen years. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security to changes in interest rates. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund invests in the U.S. and abroad, including emerging markets, and may purchase securities of varying maturities issued by domestic and foreign corporations and governments. The Fund may invest up to 25% of its assets in foreign securities that are denominated in U.S. dollars. The Fund may invest up to 15% of its assets in securities of foreign issuers that are not denominated in U.S. dollars. The Fund may invest up to 10% of its assets in emerging market securities. The Adviser focuses the Fund&#x2019;s portfolio holdings in areas of the bond market that the Adviser believes to be relatively undervalued, based on its analysis of quality, sector, coupon or maturity, and that the Adviser believes offer attractive prospective risk-adjusted returns compared to other segments of the bond market. &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund&#x2019;s investments include various types of bonds and debt securities, including corporate bonds, notes, mortgage-related and asset-backed securities (including collateralized debt obligations, which in turn include collateralized bond obligations and collateralized loan obligations), bank loans, U.S. and non&#x2011;U.S. money market securities, municipal securities, derivatives including credit default swaps and other swaps, futures, options and currency forward contracts, defaulted debt securities, private placements and restricted securities. The Fund&#x2019;s fixed income investments may have interest rates that are fixed, variable or floating. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Derivatives are used in an effort to hedge investments, for risk management, or to increase income or gains for the Fund. The Fund may also seek to obtain market exposure to the securities in which it invests by entering into a series of purchase and sale contracts or by using other investment techniques. The Fund may engage in active and&#160;frequent trading of portfolio securities to achieve its primary investment strategies. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund may normally short sell up to 25% of the value of its total assets. &lt;/div&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_RiskLoseMoneyMember"
      id="t_294_c80c3fb3_eb86_751e_5099_d32031083c02">You can lose money by investing in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_DebtSecuritiesRiskMember"
      id="t_321_0d026284_a222_1f8f_7c0d_fcd642c81d4e">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_MarketRiskMember"
      id="t_322_3d86d7d7_6067_3002_ac34_a5385cfa0d34">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Market Risk:&lt;/span&gt; the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_InterestRateRisksMember"
      id="t_323_48037254_8ce7_8498_f710_2f31fd3e070b">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Interest Rate Risk:&lt;/span&gt; the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_CreditRisksMember"
      id="t_324_b53ac956_41c5_6de8_e0d8_e75b5dcc89a0">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Credit Risk:&lt;/span&gt; the risk that an issuer may default in the payment of principal and/or interest on a security. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_InflationRiskMember"
      id="t_325_e53914e3_37af_7617_ecc6_c9a170528110">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_MortgageBackedSecuritiesRiskMember"
      id="t_326_6fd039fa_303e_bdb2_aa27_926fe6bb34a4">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mortgage-Backed Securities Risk:&lt;/span&gt; the risk of investing in mortgage-backed securities, including prepayment risk and extension risk. Mortgage-backed securities react differently to changes in interest rates than other bonds, and some mortgage-backed securities are not backed by the full faith and credit of the U.S. government. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_AssetBackedSecuritiesRiskMember"
      id="t_327_0e165847_750c_ae96_2aef_1b248f4749ea">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Asset-Backed Securities Risk:&lt;/span&gt; the risk of investing in asset-backed securities, including the risk of loss as a result of the impairment of the value of the underlying financial assets, prepayment risk and extension risk. Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_PrepaymentRisksMember"
      id="t_328_092551d0_eae7_44be_55d8_4c9bc274c688">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Prepayment Risk:&lt;/span&gt; the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_ExtensionRiskMember"
      id="t_329_df8b8041_df28_401d_ee73_cc177c0c7f87">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Extension Risk:&lt;/span&gt; the risk that in times of rising interest rates, borrowers may pay off their debt obligations more slowly, causing securities considered short- or intermediate-term to become longer-term securities that fluctuate more widely in response to changes in interest rates than shorter-term securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_PriceVolatilityRiskMember"
      id="t_330_90fe4ef6_acef_51ff_0071_271e0df1b5ec">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Price Volatility Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001147Member_IssuerRiskMember"
      id="t_331_6d9deded_569f_af92_50be_4a5d41a01f0b">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security may decline for reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001147Member_LiquidityRiskMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further constrain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; regulations may further constrain the ability of market participants to create liquidity, particularly in times of increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Treasury Obligations Risk:&lt;/span&gt; the risk that the value of U.S. Treasury obligations may decline as a result of changes in interest rates, certain political events in the U.S., and strained relations with certain foreign countries. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Government Securities Risk:&lt;/span&gt; the risk that debt securities issued or guaranteed by certain U.S. government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. government, and as a result, investments in &lt;span style="font-weight:bold"&gt;&lt;/span&gt;their securities or obligations issued by such entities involve credit risk greater than investments in other types of U.S. government securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Frequent Trading Risk:&lt;/span&gt; the risk that frequent trading may lead to increased portfolio turnover and higher transaction costs, which may reduce the Fund&#x2019;s performance and may cause higher levels of current tax liability to shareholders of the Fund. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Junk Bond Risk:&lt;/span&gt; the risk that junk bonds have a higher degree of default risk and may be less liquid and subject to greater price volatility than investment grade bonds. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Below Investment Grade Mortgage-Backed Securities Risk:&lt;/span&gt;&#160;the Fund&#x2019;s investments in residential mortgage-backed securities (&#x201c;RMBS&#x201d;) and commercial mortgage-backed securities (&#x201c;CMBS&#x201d;) that are rated below investment grade generally carry greater liquidity risk than &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; their investment grade counterparts. Historically, the markets for such below investment grade securities, and for below investment grade asset-backed securities in general, have been characterized at times by less liquidity than the market for analogous investment grade securities, particularly during the financial crisis of 2007 and 2008. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mezzanine Securities Risk:&lt;/span&gt; the risk of investing in mezzanine securities, which generally are rated below investment grade or unrated and present many of the same risks as senior loans, second lien loans and non&#x2011;investment grade bonds. Mezzanine securities present additional risks because they typically are the most subordinated debt obligation in an issuer&#x2019;s capital structure and are often unsecured. Mezzanine securities are also expected to be a highly illiquid investment. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between a futures contract and the change in market value of the underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Distressed and Defaulted Securities Risk:&lt;/span&gt; the risk that the repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Securities Selection Risk:&lt;/span&gt; the risk that the securities held by the Fund may underperform those held by other funds investing in the same asset class or included in benchmarks that are representative of the same asset class because of the portfolio managers&#x2019; choice of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Derivatives Risk:&lt;/span&gt; the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose&#160;more than the principal amount invested. These investments can create investment leverage and may create &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Swap Agreements Risk:&lt;/span&gt; the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Leverage Risk:&lt;/span&gt; the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liquidate positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. To the extent required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Investing Risk:&lt;/span&gt; the risk that Fund share prices may fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and/or other governments. In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Currency Risk:&lt;/span&gt; the risk that foreign currencies may decline in value relative to the U.S. dollar and affect the Fund&#x2019;s investments in foreign currencies, in securities that are denominated, trade and/or receive revenues in foreign currencies, or in derivatives that provide exposure to foreign currencies. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Emerging Markets Risk:&lt;/span&gt; the risk of investing in emerging market countries, which is substantial due to, among other factors, higher brokerage costs in certain countries; different accounting standards; thinner trading markets as compared to those in developed countries; less publicly available and reliable information about issuers as compared to developed markets; the possibility of currency transfer restrictions; and the risk of expropriation, nationalization or other adverse political, economic or social developments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Portfolio Management Risk:&lt;/span&gt; the risk that an investment strategy may fail to produce the intended results. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      id="t_296_a5f2b486_bf2c_1aa3_c01d_5efc76f0ae2e">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&#x2019;s performance from year to year. The bar&#160;chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I and Plan Class&#160;and higher than the Administrative Class&#160;because Class&#160;M has higher expenses than Class&#160;I and Plan Class&#160;and lower expenses than the Administrative Class. The table compares the average annual total returns of the Fund to a broad-based securities market index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      id="t_354_3bffe451_68f1_6e96_4327_e98bf5dfbc12">1997-03-31</oef:PerfInceptionDate>
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      contextRef="D19970331_20241231_C000003066Member_AfterTaxesOnDistributionsMember"
      id="t_355_3abad117_daeb_f174_f5c3_f97f829b02e2">1997-03-31</oef:PerfInceptionDate>
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      id="t_356_dd4bdbc6_aa0f_746e_d41a_a27246bf68cd">1997-03-31</oef:PerfInceptionDate>
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      id="t_310_6e52e126_7e10_c002_1fbe_d6c932f6396d">2000-03-31</oef:PerfInceptionDate>
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      contextRef="D20200306_20241231_C000218401Member"
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      contextRef="D20091218_20241231_C000058170Member"
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      contextRef="D20110731_20241231_C000102908Member"
      id="t_313_4b70caba_4777_9f3d_4c1a_3970572c8c2c">2011-07-31</oef:PerfInceptionDate>
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      id="t_298_6f22dba0_36ff_1923_8936_328757b12afb">www.tcw.com</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="D20250331_20250331_S000001147Member"
      id="t_299_ce43c72b_092f_0223_e1bc_5676082bfe32">(800)&#160;241&#x2011;4671</oef:PerformanceAvailabilityPhone>
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      id="t_300_c31b3be6_26a0_5afb_b582_4b267e13dfc4">Total Return Bond Fund &#x2013; Class&#160;M Shares Annual Total Returns for Years Ended 12/31 </oef:BarChartHeading>
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      id="t_305_d3fbd10e_bb6f_a0f3_8496_d9ccf043a1cd">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 4.70% &lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border-spacing:0px"&gt;
&lt;tr&gt;
&lt;td style="width:14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:3%;"&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:5%;"&gt;&lt;/td&gt;
&lt;td style="width:66%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Highest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;7.53%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter ended December&#160;31, 2023)&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Lowest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;-6.25%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter ended March 31, 2022)&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:BarChartClosingTextBlock>
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      id="t_302_aa16c520_0756_c770_e2cc_1f9007c6fe90">Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
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      contextRef="D20250331_20250331_S000001147Member_C000003066Member"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:8pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:7.5pt;vertical-align:top;text-align:left;"&gt;&lt;sup style="font-size:75%;vertical-align:top"&gt;1&lt;/sup&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:8pt;font-family:arial;text-align:left;"&gt;The &#x201c;After Taxes on Distributions and Sale of Shares&#x201d; return is higher than the &#x201c;After Taxes on Distributions&#x201d; return because of realized losses that would have been sustained upon sale of Fund shares immediately after the relevant period. &lt;/div&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:PerformanceTableFootnotesTextBlock>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20250331_20250331_S000001147Member"
      id="t_318_c383b947_19f4_51b0_a9c2_947705c70979">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after&#x2011;tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts. After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary. 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. &lt;/div&gt;</oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20250331_20250331_S000001147Member"
      id="t_314_ab1cd030_db9d_f5da_1517_b0068133e290">After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20250331_20250331_S000001147Member"
      id="t_315_18c47486_0a06_5dfd_3967_6c7888eb72f1">After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20250331_20250331_S000001147Member"
      id="t_316_6a92f3e7_3ed9_d0e5_81cc_a3301ea73748">After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="D20250331_20250331_S000001147Member"
      id="t_317_e3436e16_f640_952c_dbe7_f88d87868f35">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.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_354_e16f1678_e9d4_8b48_2cce_53d65d5f3d08">TCW MetWest Ultra Short Bond Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_103_71ad24ab_1bde_4730_b45a_67827bd9c9a5">Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000001151Member"
      id="t_104_8a15a954_2bd7_4893_a29e_3cf1f165b468">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Ultra Short Bond Fund seeks to maximize current income, consistent with preservation of capital. &lt;/div&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_105_729d7f27_42de_4da9_b1e8_18a03333026d">Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000001151Member"
      id="t_106_2e9489e6_e0eb_40f0_8546_728a2339e24a">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. &lt;/div&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000001151Member"
      id="t_107_65571993_823c_44f8_83a3_31aae1b57ca5">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="4"
      id="h_325_0acf2dd8_dd1b_4850_bbd7_18a4ff96bef7"
      unitRef="pure">0.0025</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="4"
      id="h_326_e052d8b6_7093_4532_9cd1_38fb7bd93144"
      unitRef="pure">0.0025</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="4"
      id="h_327_c6cfd390_a169_486e_b163_2497f8608227"
      unitRef="pure">0.0016</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="4"
      id="h_328_ba3dbc29_a1e8_4eb7_a4b7_9dd348c87248"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="4"
      id="h_329_2a124b14_02e8_470a_9119_4952eb7a3f99"
      unitRef="pure">0.0065</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="4"
      id="h_330_ebabf89e_0e2f_46d4_98d6_f69bbd091d85"
      unitRef="pure">0.0065</oef:OtherExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="4"
      id="h_331_1fae1e31_830a_4ec4_82ed_83d50b356436"
      unitRef="pure">0.0000</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:AcquiredFundFeesAndExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="4"
      id="h_332_54122162_a677_4b3f_90ba_e9f5a944813a"
      unitRef="pure">0.0000</oef:AcquiredFundFeesAndExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="4"
      id="h_333_dc3ec036_7a59_4af9_919d_7d96940ac2da"
      unitRef="pure">0.0106</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="4"
      id="h_334_abaf3591_f99a_4cfd_b822_4e063cdd35f7"
      unitRef="pure">0.0090</oef:ExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="4"
      id="h_335_e6657236_42eb_49ea_b4fa_8538f95417ac"
      unitRef="pure">-0.0056</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="4"
      id="h_336_cc2be67a_204f_4563_ba2a_2fdb6effc216"
      unitRef="pure">-0.0056</oef:FeeWaiverOrReimbursementOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="4"
      id="h_337_74636b1f_ed6f_42f5_b437_60618d5c4ca5"
      unitRef="pure">0.0050</oef:NetExpensesOverAssets>
    <oef:NetExpensesOverAssets
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="4"
      id="h_338_954f3972_158e_4c20_be3c_1f30bb216e2a"
      unitRef="pure">0.0034</oef:NetExpensesOverAssets>
    <oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination
      contextRef="D20250331_20250331_S000001151Member"
      id="t_355_50659ed2_f42e_aed2_a8d3_b414cb9f0b93">July&#160;31, 2026</oef:FeeWaiverOrReimbursementOverAssetsDateOfTermination>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_108_ebf3bf03_786c_40eb_be52_4bd1ddd0ab08">Example </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000001151Member"
      id="t_109_5889ddbf_cdc3_4bbb_b104_55bbde3bbc13">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. The cost for the Fund reflects the net expenses of the Fund that result from the contractual expense limitation in the first year only (through July&#160;31, 2026). Although your actual costs may be higher or lower, based on these assumptions your costs would be: &lt;/div&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="INF"
      id="h_339_5b502cc8_1498_44d6_9c10_d6fe8cae3f73"
      unitRef="USD">51</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="INF"
      id="h_340_e7d884c0_ca52_4be3_906c_c095bde30c55"
      unitRef="USD">281</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="INF"
      id="h_341_171951f4_bfa5_4b62_af8a_ac68d9ae0631"
      unitRef="USD">530</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      decimals="INF"
      id="h_342_aeca7f50_fd70_420b_aa0f_cf331078323f"
      unitRef="USD">1244</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="INF"
      id="h_343_f31e7127_6b4f_4535_a9af_ef98cfba7374"
      unitRef="USD">35</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="INF"
      id="h_344_2635c82d_a0fc_4447_89b7_311d63b52432"
      unitRef="USD">231</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="INF"
      id="h_345_a98cc0dc_46e9_4748_939a_892e92820456"
      unitRef="USD">444</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000001151Member_C000003072Member"
      decimals="INF"
      id="h_346_7840319e_610e_4a7b_b638_159b799abd2a"
      unitRef="USD">1056</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_110_dc586037_4b5a_4254_b3ad_46a28f7dcfdc">Portfolio Turnover </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250331_20250331_S000001151Member"
      id="t_111_420bc29b_eca6_473c_a34e_407ad12d14b9">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was 553% of the average value of its portfolio. &lt;/div&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250331_20250331_S000001151Member"
      decimals="4"
      id="h_347_c9a0e641_55f3_45e3_a2f5_bd1f56e2b282"
      unitRef="pure">5.53</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_112_17e0f6ea_49b1_4b38_a045_0c45c32f0ff1">Principal Investment Strategies </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20250331_20250331_S000001151Member"
      id="t_113_f7d6a493_e3b3_4cbb_8780_d94cd6c994d8">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pursues its objective by investing, under normal circumstances, at least 90% of its net assets in investment grade fixed income securities or unrated securities determined by the Adviser to be of comparable quality. Up to 10% of the Fund&#x2019;s net assets may be invested in securities rated below investment grade (commonly known as &#x201c;junk bonds&#x201d;) or unrated securities determined by the Adviser to be of comparable quality. The Fund also invests, under normal circumstances, at least 80% of its net assets, plus any borrowings for investment purposes, in fixed income securities it regards as bonds. A bond is a security or instrument having one or more of the following characteristics: a fixed-income security, a security issued at a discount to its face value, a security that pays interest or a security with a stated principal amount that requires repayment of some or all of that principal amount to the holder of the security. The term &#x201c;bond&#x201d; is interpreted broadly by the Adviser as an instrument or security evidencing a promise to pay some amount rather &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; than evidencing the corporate ownership of equity, unless that equity represents an indirect or derivative interest in one or more bonds. Under normal circumstances, the Fund&#x2019;s portfolio duration will remain within one year of its benchmark index, and its dollar-weighted average maturity can exceed one year. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security to changes in interest rates. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund invests in the U.S. and abroad, including emerging markets, and may purchase securities of varying maturities issued by domestic and foreign corporations and governments. The Fund also seeks to maintain a low degree of share price fluctuation. The Fund may invest up to 25% of its assets in foreign securities that are denominated in U.S. dollars. The Fund may invest up to 15% of its assets in securities of foreign issuers that are not denominated in U.S. dollars. The Fund may invest up to 10% of its assets in emerging market securities. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund&#x2019;s investments include various types of bonds and debt securities, including corporate bonds, notes, mortgage-related and asset-backed securities (including collateralized debt obligations, which in turn include collateralized bond obligations and collateralized loan obligations), bank loans, U.S. and non&#x2011;U.S. money market securities, municipal securities, private placements and restricted securities. The Fund&#x2019;s fixed income investments may have interest rates that are fixed, variable or floating. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund may normally short sell up to 25% of the value of its total assets. Derivatives are used in an effort to hedge investments, for risk management, or to increase income or gains for the Fund. The types of derivative instruments in which the Fund will principally invest are credit default swaps and other swaps, futures, options and currency forward contracts. The Fund may also seek to obtain market exposure to the securities in which it invests by entering into a series of purchase and sale contracts or by using other investment techniques such as reverse repurchase agreements. The Fund may engage in active and&#160;frequent trading&#160;of portfolio securities to achieve its primary investment strategies. &lt;/div&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_RiskLoseMoneyMember"
      id="t_356_f0311011_c3ea_1d71_d0ed_d13586a089d7">You can lose money by investing in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_DebtSecuritiesRiskMember"
      id="t_380_a644b4cd_1f91_393e_4620_f7e3336902e3">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_MarketRiskMember"
      id="t_381_03238385_d72c_854d_8008_9558797154d8">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Market Risk:&lt;/span&gt; the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_CreditRisksMember"
      id="t_382_511cfa1a_4c11_e175_e632_b5e343441280">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Credit Risk:&lt;/span&gt;&#160;the risk that an issuer may default in the payment of principal and/or interest on a security. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_InflationRiskMember"
      id="t_383_e94df3b5_2033_0311_dc6e_3be12e25532b">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_IssuerRiskMember"
      id="t_384_490074e1_2279_cf9b_c9e1_0f9ed31a750f">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security may decline for reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_SecuritiesSelectionRiskMember"
      id="t_385_4723ea70_28b5_62c2_7fb0_e61966c07e45">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Securities Selection Risk:&lt;/span&gt;&#160;the risk that the securities held by the Fund may underperform those held by other funds investing in the same asset class or included in benchmarks that are representative of the same asset class because of the portfolio managers&#x2019; choice of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000001151Member_USTradePolicyRiskMember"
      id="t_386_618edaf8_0827_e644_7c92_4ba5db4cf6d3">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Frequent Trading Risk:&lt;/span&gt; the risk that frequent trading may lead to increased portfolio turnover and higher transaction costs, which may reduce the Fund&#x2019;s performance and may cause higher levels of current tax liability to shareholders of the Fund. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between a futures contract and the change in market value of the &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Derivatives Risk:&lt;/span&gt;&#160;the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose more than the principal amount invested. These investments can create investment leverage and may create additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mortgage-Backed Securities Risk:&lt;/span&gt; the risk of investing in mortgage-backed securities, including prepayment risk and extension risk. Mortgage-backed securities react differently to changes in interest rates than other bonds, and some mortgage-backed securities are not backed by the full faith and credit of the U.S. government. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Asset-Backed Securities Risk:&lt;/span&gt; the risk of investing in asset-backed securities, including the risk of loss as a result of the impairment of the value of the underlying financial assets, prepayment risk and extension risk. Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Below Investment Grade Mortgage-Backed Securities Risk:&lt;/span&gt;&#160;the Fund&#x2019;s investments in residential mortgage-backed securities (&#x201c;RMBS&#x201d;) and commercial mortgage-backed securities (&#x201c;CMBS&#x201d;) that are rated below investment grade generally carry greater liquidity risk than their investment grade counterparts. Historically, the markets for such below investment grade securities, and for below investment grade asset-backed securities in general, have been characterized at times by less liquidity than the market for analogous investment grade securities, particularly during the financial crisis of 2007 and 2008. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Junk Bond Risk:&lt;/span&gt;&#160;the risk that junk bonds have a higher degree of default risk and may be less liquid and subject to greater price volatility than investment grade securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Interest Rate Risk:&lt;/span&gt; the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Swap Agreements Risk:&lt;/span&gt;&#160;the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Price Volatility Risk:&lt;/span&gt;&#160;the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Treasury Obligations Risk:&lt;/span&gt; the risk that the value of U.S. Treasury obligations may decline as a result of changes in interest rates, certain political events in the U.S., and strained relations with certain foreign countries. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Government Securities Risk:&lt;/span&gt; the risk that debt securities issued or guaranteed by certain U.S. government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. government, and as a result, investments in securities or obligations issued by such entities involve credit risk greater than investments in other types of U.S. government securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Money Market/Short-Term Securities Risk:&lt;/span&gt; To the extent the Fund holds cash or invests in money market or short-term securities, the Fund may be less likely to achieve its investment objective. In addition, it is possible that the Fund&#x2019;s investments in these instruments could lose money. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Investing Risk:&lt;/span&gt; the risk that Fund share prices will fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; and other government restrictions by the United States and/or other governments. In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Emerging Markets Risk:&lt;/span&gt; the risk of investing in emerging market countries, which is substantial due to, among other factors, higher brokerage costs in certain countries; different accounting standards; thinner trading markets as compared to those in developed countries; less publicly available and reliable information about issuers as compared to developed markets; the possibility of currency transfer restrictions; and the risk of expropriation, nationalization or other adverse political, economic or social developments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Portfolio Management Risk:&lt;/span&gt;&#160;the risk that an investment strategy may fail to produce the intended results. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further constrain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future regulations may further constrain the ability of market par-&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; ticipants to create liquidity, particularly in times of increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Prepayment Risk:&lt;/span&gt; the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Extension Risk:&lt;/span&gt; the risk that in times of rising interest rates, borrowers may pay off their debt obligations more slowly, causing securities considered short- or intermediate-term to become longer-term securities that fluctuate more widely in response to changes in interest rates than shorter-term securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001151Member_LeverageRiskMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Leverage Risk:&lt;/span&gt; the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liquidate positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. To the extent required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000001151Member_RiskNotInsuredDepositoryInstitutionMember"
      id="t_357_3d0042c4_54f8_9ec8_80ed_b181b671ddf0">&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Your investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, entity, or person. &lt;/div&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_115_350aa2c1_a2e5_414b_b8f1_48e7fa6d3df2">Performance Information </oef:BarChartAndPerformanceTableHeading>
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      contextRef="D20250331_20250331_S000001151Member"
      id="t_366_7b1294da_c445_a5c8_e538_bd168728054c">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary bench-&lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; mark index. Total returns would have been lower if certain fees and expenses had not been waived or reimbursed. The inception dates of Class&#160;M shares and Class&#160;I shares of the Fund are June&#160;30, 2003 and July&#160;31, 2004, respectively. The Fund&#x2019;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)&#160;241&#x2011;4671. &lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="D20250331_20250331_S000001151Member"
      id="t_358_7b0a7198_ed67_dad6_62d9_e5d9db7b3455">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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary bench-mark index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
    <oef:PerfInceptionDate
      contextRef="D20030630_20241231_C000003073Member"
      id="t_359_42d3c6e6_1812_0113_0063_cf4d715d6a28">2003-06-30</oef:PerfInceptionDate>
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      contextRef="D20030630_20241231_C000003073Member_AfterTaxesOnDistributionsMember"
      id="t_360_3870a480_9c21_73a4_0459_7658b04d7249">2003-06-30</oef:PerfInceptionDate>
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      contextRef="D20030630_20241231_C000003073Member_AfterTaxesOnDistributionsAndSalesMember"
      id="t_361_eb2bb19b_df52_e0b2_ecc5_c6e10a3fb92a">2003-06-30</oef:PerfInceptionDate>
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      contextRef="D20040731_20241231_C000003072Member"
      id="t_362_2da28a5a_623b_0468_20b9_2be5d0eb3035">2004-07-31</oef:PerfInceptionDate>
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      contextRef="D20250331_20250331_S000001151Member"
      id="t_363_6fabb469_5e4e_b8d1_c530_c90f5b94759d">The Fund&#x2019;s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.</oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="D20250331_20250331_S000001151Member"
      id="t_364_a3b31a20_feb7_0c24_084b_bb65d21a3bce">www.tcw.com</oef:PerformanceAvailabilityWebSiteAddress>
    <oef:PerformanceAvailabilityPhone
      contextRef="D20250331_20250331_S000001151Member"
      id="t_365_29945246_ba40_bb20_31f2_c7d8500d9927">(800)&#160;241&#x2011;4671</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20250331_20250331_S000001151Member"
      id="t_367_38daf64b_f12b_8636_c222_861c987feaf7">Ultra Short Bond Fund &#x2013; Class&#160;M Shares Annual Total Returns for Years Ended 12/31 </oef:BarChartHeading>
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      contextRef="D20250331_20250331_S000001151Member"
      id="t_372_a4136cee_93cb_1daf_2dd0_221a8db10af2">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Year&#x2011;To&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 3.07% &lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border-spacing:0px"&gt;
&lt;tr&gt;
&lt;td style="width:14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:3%;"&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:5%;"&gt;&lt;/td&gt;
&lt;td style="width:66%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Highest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;2.96%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter ended September&#160;30, 2024)&lt;sup style="font-size:75%;vertical-align:top"&gt;&lt;/sup&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Lowest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;-1.27%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter ended March&#160;31, 2022) &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:BarChartClosingTextBlock>
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      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      id="t_368_a6e020a3_85b2_b2a5_5260_afd64977a00a">Year&#x2011;To&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
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      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      id="t_369_ea3ae665_febf_b143_6c82_00c4dc480f20">2025-06-30</oef:BarChartYearToDateReturnDate>
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      unitRef="pure">0.0307</oef:BarChartYearToDateReturn>
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      id="h_348_080fc6ff_a0a1_42ac_8289_e80c2287e4d7">Highest:</oef:HighestQuarterlyReturnLabel>
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      decimals="4"
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      unitRef="pure">0.0296</oef:BarChartHighestQuarterlyReturn>
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      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      id="t_370_3abbf54a_4e46_6851_62a2_4afcdbfa94ad">2024-09-30</oef:BarChartHighestQuarterlyReturnDate>
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      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
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      decimals="4"
      id="h_352_406eb275_7e97_42f7_bd5d_260e6aabc397"
      unitRef="pure">-0.0127</oef:BarChartLowestQuarterlyReturn>
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      contextRef="D20250331_20250331_S000001151Member_C000003073Member"
      id="t_371_b8de1f0e_58cf_dee9_3928_dce7d40238bb">2022-03-31</oef:BarChartLowestQuarterlyReturnDate>
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      id="t_373_74b4a2f6_d904_d4e1_9715_5f3391a9cc7d">Average Annual Total Returns (For Periods Ended December&#160;31, 2024) </oef:PerformanceTableHeading>
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      unitRef="pure">0.0516</oef:AvgAnnlRtrPct>
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      id="h_355_55979441_bb45_4689_aadd_f395dd78ed5e"
      unitRef="pure">0.0169</oef:AvgAnnlRtrPct>
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      id="h_356_7ff646f3_b870_40a1_95b0_4c5b25b5ff7a"
      unitRef="pure">0.0151</oef:AvgAnnlRtrPct>
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      unitRef="pure">0.0073</oef:AvgAnnlRtrPct>
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      decimals="4"
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      decimals="4"
      id="h_366_7d4501c8_b6d0_4128_81b9_e461696c49b2"
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      decimals="4"
      id="h_370_cffddf22_f035_432d_93a3_cc749ab6762e"
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      unitRef="pure">0.0201</oef:AvgAnnlRtrPct>
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      id="t_374_1d779acd_2317_d754_7922_86e5d9d516f5">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:8pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:7.5pt;vertical-align:top;text-align:left;"&gt;&lt;sup style="font-size:75%;vertical-align:top"&gt;1&lt;/sup&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:8pt;font-family:arial;text-align:left;"&gt;The &#x201c;After Taxes on Distributions and Sale of Shares&#x201d; return is higher than the &#x201c;After Taxes on Distributions&#x201d; return because of realized losses that would have been sustained upon sale of Fund shares immediately after the relevant period. &lt;/div&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:PerformanceTableFootnotesTextBlock>
    <oef:PerformanceTableNarrativeTextBlock
      contextRef="D20250331_20250331_S000001151Member"
      id="t_379_f6924b6d_756d_5884_c991_bc34a6b57207">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after&#x2011;tax returns depend on an investor&#x2019;s tax situation and may differ from those shown. After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts. After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary. 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. &lt;/div&gt;</oef:PerformanceTableNarrativeTextBlock>
    <oef:PerformanceTableUsesHighestFederalRate
      contextRef="D20250331_20250331_S000001151Member"
      id="t_375_c2636f16_913c_f272_ed31_d77d1c8e7efd">After&#x2011;tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes.</oef:PerformanceTableUsesHighestFederalRate>
    <oef:PerformanceTableNotRelevantToTaxDeferred
      contextRef="D20250331_20250331_S000001151Member"
      id="t_376_856558de_b542_2338_07c4_e85f430c4616">After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
    <oef:PerformanceTableOneClassOfAfterTaxShown
      contextRef="D20250331_20250331_S000001151Member"
      id="t_377_e9c67248_54e0_3fdc_ddd9_ede0ba5b9347">After&#x2011;tax returns are shown for only Class&#160;M Shares. After&#x2011;tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
    <oef:PerformanceTableExplanationAfterTaxHigher
      contextRef="D20250331_20250331_S000001151Member"
      id="t_378_9e114af7_5807_819d_332c_4b87594f1ae3">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.</oef:PerformanceTableExplanationAfterTaxHigher>
    <oef:RiskReturnHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_409_696b448b_a9be_f873_42cd_f34a805e0fe8">TCW MetWest Unconstrained Bond Fund </oef:RiskReturnHeading>
    <oef:ObjectiveHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_120_78aadb28_9e07_4806_99dd_02030b32fb13">Investment Objective </oef:ObjectiveHeading>
    <oef:ObjectivePrimaryTextBlock
      contextRef="D20250331_20250331_S000034126Member"
      id="t_121_5331c200_25cf_477c_9bff_83e8d841b467">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Unconstrained Bond Fund seeks to provide investors with positive long-term returns irrespective of general securities market conditions. &lt;/div&gt;</oef:ObjectivePrimaryTextBlock>
    <oef:ExpenseHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_122_f63c4971_e6f2_4e03_9d4c_216e41ab771e">Fees and Expenses of the Fund </oef:ExpenseHeading>
    <oef:ExpenseNarrativeTextBlock
      contextRef="D20250331_20250331_S000034126Member"
      id="t_123_c8f50da8_2e5a_43cb_9cc2_253296064d7e">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The table below describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. &lt;/div&gt;</oef:ExpenseNarrativeTextBlock>
    <oef:OperatingExpensesCaption
      contextRef="D20250331_20250331_S000034126Member"
      id="t_124_e59efff9_7029_493a_a8e8_022f5eac8d72">Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) </oef:OperatingExpensesCaption>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="4"
      id="h_378_8c2afeba_c5bc_4215_898b_638972fbb151"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="4"
      id="h_379_bc54a115_9398_4b66_bdc5_992ae59ef4de"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:ManagementFeesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="4"
      id="h_380_7714bc43_590e_4f7f_804f_55b5d7a9a6c3"
      unitRef="pure">0.0065</oef:ManagementFeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="4"
      id="h_381_c6d01502_6f84_4a08_b24d_a4a78c09a7ee"
      unitRef="pure">0.0025</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="4"
      id="h_382_948f144b_f53c_4683_a207_90c4badf116d"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:DistributionAndService12b1FeesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="4"
      id="h_383_baf55d7b_7e07_4ec3_ae27_d1b84853f06b"
      unitRef="pure">0</oef:DistributionAndService12b1FeesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="4"
      id="h_384_a61ee740_e4d4_4416_8cb1_b977478f8df1"
      unitRef="pure">0.0013</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="4"
      id="h_385_2c55beac_3111_4a15_bbed_fcf21497139f"
      unitRef="pure">0.0010</oef:OtherExpensesOverAssets>
    <oef:OtherExpensesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="4"
      id="h_386_5939451d_23a0_491f_a671_d6810c8f73cf"
      unitRef="pure">0.0004</oef:OtherExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="4"
      id="h_387_b22e999d_776b_4488_b566_c9ee6b687939"
      unitRef="pure">0.0103</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="4"
      id="h_388_839b2ab4_c553_44b5_a408_733f97d9638f"
      unitRef="pure">0.0075</oef:ExpensesOverAssets>
    <oef:ExpensesOverAssets
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="4"
      id="h_389_8803857c_d186_4d2f_80ab_ec9682216b49"
      unitRef="pure">0.0069</oef:ExpensesOverAssets>
    <oef:ExpenseExampleHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_125_108dc9cb_4420_40d7_9490_5347e0f9b895">Example </oef:ExpenseExampleHeading>
    <oef:ExpenseExampleNarrativeTextBlock
      contextRef="D20250331_20250331_S000034126Member"
      id="t_126_0e6f976d_b9f1_41e7_b80b_cdf49b10b9c5">&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund&#x2019;s operating expenses remain the same. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Although your actual costs may be higher or lower, based on these assumptions your costs would be: &lt;/div&gt;</oef:ExpenseExampleNarrativeTextBlock>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="INF"
      id="h_390_4ea1a19b_233d_405f_ab89_edd98c367ef8"
      unitRef="USD">105</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="INF"
      id="h_391_ac2daf5a_57da_4444_9b25_f645441c8f27"
      unitRef="USD">328</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="INF"
      id="h_392_a7cb275c_be40_45b6_873b_851eea8de231"
      unitRef="USD">569</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="INF"
      id="h_393_5e6772a2_e258_4cf5_9bd1_b33977e75cf4"
      unitRef="USD">1259</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="INF"
      id="h_394_4eb7cbb3_574d_4a33_9ff7_adbe021ff621"
      unitRef="USD">77</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="INF"
      id="h_395_0ce0ff14_29cd_43ca_ac0b_7b3df49ff9dd"
      unitRef="USD">240</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="INF"
      id="h_396_dd713162_44f2_47aa_8e0f_b92a8779a6cc"
      unitRef="USD">417</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000034126Member_C000105186Member"
      decimals="INF"
      id="h_397_04a664bf_0407_4984_8718_1a848abfd90e"
      unitRef="USD">930</oef:ExpenseExampleYear10>
    <oef:ExpenseExampleYear01
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="INF"
      id="h_398_38ab7b1a_4c04_440e_be81_63ff15fc2033"
      unitRef="USD">70</oef:ExpenseExampleYear01>
    <oef:ExpenseExampleYear03
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="INF"
      id="h_399_43b718b2_2aea_44a2_ab2c_a40d3a455d2d"
      unitRef="USD">221</oef:ExpenseExampleYear03>
    <oef:ExpenseExampleYear05
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="INF"
      id="h_400_79550275_42ca_48e9_92e6_0a25c276328c"
      unitRef="USD">384</oef:ExpenseExampleYear05>
    <oef:ExpenseExampleYear10
      contextRef="D20250331_20250331_S000034126Member_C000218402Member"
      decimals="INF"
      id="h_401_5964f1ca_0d1c_4a33_b545_5a7c9728653d"
      unitRef="USD">859</oef:ExpenseExampleYear10>
    <oef:PortfolioTurnoverHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_127_19601a3c_f94d_49e9_994e_7dd25c2187d5">Portfolio Turnover </oef:PortfolioTurnoverHeading>
    <oef:PortfolioTurnoverTextBlock
      contextRef="D20250331_20250331_S000034126Member"
      id="t_128_97424b38_edb5_4cef_b185_c36c5bfd7985">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pays transaction costs, such as commissions, when it buys and sells securities (or &#x201c;turns over&#x201d; its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; the Fund&#x2019;s performance. During the most recent fiscal year, the Fund&#x2019;s portfolio turnover rate was 188% of the average value of its portfolio. &lt;/div&gt;</oef:PortfolioTurnoverTextBlock>
    <oef:PortfolioTurnoverRate
      contextRef="D20250331_20250331_S000034126Member"
      decimals="4"
      id="h_402_c11008aa_ae8e_4676_9a3c_f5e169ba6d53"
      unitRef="pure">1.88</oef:PortfolioTurnoverRate>
    <oef:StrategyHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_129_fa965025_8af1_4dec_9901_5289f12bb772">Principal Investment Strategies </oef:StrategyHeading>
    <oef:StrategyNarrativeTextBlock
      contextRef="D20250331_20250331_S000034126Member"
      id="t_130_9cb48709_6c2a_47ad_91e3_36a931263ce6">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund pursues its objective by utilizing a flexible investment approach that allocates investments across a range of global investment opportunities related to credit, currencies and interest rates. Satisfying the Fund&#x2019;s objective would require it to achieve positive total returns over a full market cycle, &lt;span style="font-style:italic"&gt;i.e.&lt;/span&gt;, a period of time generally understood to be contained between two consecutive periods of heightened default activity within the global fixed income markets. Total return includes income and capital gains. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The use of the term &#x201c;unconstrained&#x201d; in the Fund&#x2019;s name means that it is not limited by the types of investments in a particular securities index. The Fund is not managed to be compared to any such index. The Fund also is unconstrained in the sense that it is not limited to any single type of investment strategy. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The portfolio management team evaluates each investment idea based on the team&#x2019;s view of, among other factors, its potential return, its risk level and how it fits within the Fund&#x2019;s overall portfolio in determining whether to buy or sell investments. The Adviser allocates the Fund&#x2019;s assets in response to, among other considerations, changing market, financial, economic, and political factors and events that the Fund&#x2019;s portfolio managers believe may affect the values of the Fund&#x2019;s investments. The allocation of capital to sectors and securities within each sector in the Fund is driven primarily by the Adviser&#x2019;s assessment of relative value offered by each sector and security, respectively. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Adviser seeks to actively manage the Fund&#x2019;s risks on an on&#x2011;going basis to mitigate the risks of excessive losses by the portfolio overall. In managing portfolio risk, the Adviser takes into consideration its view of the following factors, among others: the potential relative performance of various market sectors, security selection available within a given sector, the risk/reward equation for different asset classes, liquidity conditions in various market sectors, the shape of the yield curve and projections for changes in the yield curve, potential fluctuations in the overall level of interest rates, and current monetary and fiscal policy. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund invests, under normal circumstances, at least 80% of its net assets, plus any borrowings for investment pur-&lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; poses, in securities and instruments it regards as bonds in the U.S. and abroad, including emerging markets, and may purchase securities of varying maturities issued by domestic and foreign corporations and governments. A bond is a security or instrument having one or more of the following characteristics: a fixed-income security, a security issued at a discount to its face value, a security that pays interest or a security with a stated principal amount that requires repayment of some or all of that principal amount to the holder of the security. The term &#x201c;bond&#x201d; is interpreted broadly by the Adviser as an instrument or security evidencing a promise to pay some amount rather than evidencing the corporate ownership of equity, unless that equity represents an indirect or derivative interest in one or more bonds. The Fund may invest in both investment grade and high yield fixed income securities (commonly known as &#x201c;junk bonds&#x201d;), subject to investing no more than 50% of its total assets (measured at the time of investment) in securities rated below investment grade by Moody&#x2019;s, S&amp;amp;P or Fitch, or, if unrated, determined by the Adviser to be of comparable quality. Under normal circumstances, the average portfolio duration of the fixed-income portion of the Fund&#x2019;s portfolio will vary from negative three (&#x2011;3) years to positive eight (8)&#160;years. Duration is a measure of the expected life of a fixed income security that is used to determine the sensitivity of a security to changes in interest rates. As a separate measure, there is no limit on the weighted average maturity of the Fund&#x2019;s portfolio. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund may invest in foreign securities, and up to 50% of the Fund&#x2019;s total assets may be invested in emerging markets and instruments that are economically tied to emerging market countries. The Fund considers emerging market countries to include all of the countries in the J.P. Morgan Emerging Market Bond Index (EMBI) Global Diversified, the J.P.&#160;Morgan Corporate Emerging Market Bond Index (CEMBI) Broad Diversified, the J.P. Morgan Government Bond Index-Emerging Markets (GBI&#x2011;EM), the MSCI Emerging Markets Index and the MSCI Frontier Markets Index. Instruments considered to be economically tied to emerging market countries are (i)&#160;those that are principally traded in an emerging market country, or (ii)&#160;those that are issued by: (a)&#160;an issuer organized under the laws of or maintaining a principal place of business in an emerging market country, (b)&#160;an issuer that derives or is expected to derive 50% or more of its total revenues, earnings or profits from business activity in an emerging market country, or that maintains or is expected to maintain 50% or more of its employees, assets, investments or operations in an emerging market country, or (c)&#160;a governmental or quasi-governmental entity of an emerging market country. The emerging market fixed-income securities &lt;/div&gt;&lt;div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt; in which the Fund may invest are not subject to any minimum credit quality standards, so long as the value of those investments does not cause the Fund to exceed its limit on investments in securities rated below investment grade. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund normally limits its foreign currency exposure (from non&#x2011;U.S. dollar-denominated securities or currencies) to 40% of its total assets.&#160;The Fund reserves the right to hedge its exposure to foreign currencies to reduce the risk of loss from fluctuations in currency exchange rates, but is under no obligation to do so under any circumstances. &lt;/div&gt;&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;The Fund may sell securities and other instruments short provided that not more than 25% of its net assets is held as collateral for those transactions. Derivatives are used in an effort to hedge investments, for risk management or to increase income or gains for the Fund. The types of derivative instruments in which the Fund will principally invest are currency and other futures, forward contracts, options, and swap agreements (typically interest rate swaps, index-linked swaps, total return swaps and credit default swaps). The Fund may invest up to 10% of its total assets in preferred stock and up to 5% in common stock of domestic and foreign companies. The Fund may engage in active and&#160;frequent trading&#160;of portfolio securities to achieve its primary investment strategies. &lt;/div&gt;</oef:StrategyNarrativeTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000034126Member_RiskLoseMoneyMember"
      id="t_410_89557213_9e39_e9ed_e61d_0aa3e4fab6d4">You can lose money by investing in the Fund.</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000034126Member_DebtSecuritiesRiskMember"
      id="t_435_a7a92a6f_e0af_3956_8567_34d7adfe1fe0">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Debt Securities Risk:&lt;/span&gt; the risk that the value of a debt security may increase or decrease as a result of various factors, including changes in interest rates, actual or perceived inability or unwillingness of issuers to make principal or interest payments, market fluctuations and illiquidity in the debt securities market. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000034126Member_MarketRiskMember"
      id="t_436_0832ba2c_e062_11e4_2586_5e02af0bd019">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Market Risk:&lt;/span&gt;&#160;the risk that returns from the securities in which the Fund invests may underperform returns from the general securities markets or other types of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000034126Member_InterestRateRisksMember"
      id="t_437_2e6e5eb9_bf97_7ccb_8d42_a01e085ce108">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Interest Rate Risk:&lt;/span&gt; the risk that debt securities may decline in value because of changes in interest rates. This risk is greater during periods of rising inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000034126Member_CreditRisksMember"
      id="t_438_3c097920_1470_602f_cb1c_d72c8b9305f5">
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Credit Risk:&lt;/span&gt; the risk that an issuer may default in the payment of principal and/or interest on a security. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Inflation Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investments may not keep up with price increases from inflation. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Issuer Risk:&lt;/span&gt; the risk that the value of a security may decline for reasons directly related to the issuer, such as management performance, financial leverage and reduced demand for the issuer&#x2019;s goods or services. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Mortgage-Backed Securities Risk:&lt;/span&gt; the risk of investing in mortgage-backed securities, including prepayment risk and extension risk. Mortgage-backed securities react differently to changes in interest rates than other bonds, and some mortgage-backed securities are not backed by the full faith and credit of the U.S. government. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Asset-Backed Securities Risk:&lt;/span&gt; the risk of investing in asset-backed securities, including the risk of loss as a result of the impairment of the value of the underlying financial assets, prepayment risk and extension risk. Issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Below Investment Grade Mortgage-Backed Securities Risk:&lt;/span&gt;&#160;the Fund&#x2019;s investments in residential mortgage-backed securities (&#x201c;RMBS&#x201d;) and commercial mortgage-backed securities (&#x201c;CMBS&#x201d;) that are rated below investment grade generally carry greater liquidity risk than their investment grade counterparts. Historically, the markets for such below investment grade securities, and for below investment grade asset-backed securities in general, have been characterized at times by less liquidity than the market for analogous investment grade securities, particularly during the financial crisis of 2007 and 2008. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Junk Bond Risk:&lt;/span&gt; the risk that junk bonds have a higher degree of default risk and may be less liquid and subject to greater price volatility than investment grade bonds. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Emerging Markets Risk:&lt;/span&gt; the risk of investing in emerging market countries, which is substantial due to, among other factors, higher brokerage costs in certain countries; different accounting standards; thinner trading markets as compared to those in developed countries; less publicly available and reliable information about issuers as compared to developed markets; the possibility of currency transfer restrictions; and the risk of expropriation, nationalization or other adverse political, economic or social developments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Distressed and Defaulted Securities Risk:&lt;/span&gt; the risk that the repayment of defaulted securities and obligations of distressed issuers is subject to significant uncertainties. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Unrated Securities Risk:&lt;/span&gt; the risk that unrated securities may be less liquid than comparable rated securities, and the risk that the Adviser may not accurately evaluate the security&#x2019;s comparative credit rating. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Equity Risk:&lt;/span&gt; the risk that stocks and other equity securities generally fluctuate in value more than bonds and may decline in value over short or extended periods as a result of changes in a company&#x2019;s financial condition or in overall market, economic and political conditions. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Futures Contracts Risk:&lt;/span&gt; the risk of investing in futures contracts, which includes (1)&#160;the imperfect correlation between a futures contract and the change in market value of the underlying instrument held by the Fund; (2)&#160;a high degree of leverage because of the low collateral deposits normally involved in futures trading; (3)&#160;possible lack of a liquid secondary market for a futures contract and the resulting inability to close a futures contract when desired; (4)&#160;losses caused by unanticipated market movements, which are potentially unlimited; and (5)&#160;the inability of the Fund to execute a trade because of the maximum permissible price movements exchanges may impose on futures contracts. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Securities Selection Risk:&lt;/span&gt; the risk that the securities held by the Fund may underperform those held by other funds investing in the same asset class or those included in benchmarks that are representative of the same asset class because of the portfolio managers&#x2019; choice of securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Derivatives Risk:&lt;/span&gt; the risk of investing in derivative instruments, which includes liquidity, interest rate, market, credit and management risks as well as risks related to mispricing or improper valuation. Changes in the value of a derivative may not correlate perfectly with the underlying asset, reference rate or index, and the Fund could lose more than the principal amount invested. These investments can create investment leverage and may create additional risks that may subject the Fund to greater volatility and less liquidity than investments in more traditional securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Price Volatility Risk:&lt;/span&gt; the risk that the value of the Fund&#x2019;s investment portfolio will change as the prices of its investments go up or down. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Trade Policy Risk: &lt;/span&gt;There have been significant changes to United States trade policies, agreements and tariffs, and in the future there may be additional significant changes. These and any future developments, and continued uncertainty surrounding trade policies, agreements and tariffs, may have a material adverse effect on global economic conditions, inflation and the stability of global financial markets, and may significantly reduce global trade and, in particular, trade between the impacted nations and the &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; United States. Any of these factors could depress economic activity and restrict the access by issuers of the Fund&#x2019;s portfolio securities to suppliers or customers, increase their supply-chain costs and expenses and could have material adverse effects on the Fund&#x2019;s portfolio investments. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Frequent Trading Risk:&lt;/span&gt; the risk that frequent trading may lead to increased portfolio turnover and higher transaction costs, which may reduce the Fund&#x2019;s performance and may cause higher levels of current tax liability to shareholders of the Fund. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Investing Risk:&lt;/span&gt; the risk that Fund share prices will fluctuate with market conditions, currency exchange rates and the economic and political climates of the foreign countries in which the Fund invests or has exposure. Investments in foreign securities may involve greater risks than investing in U.S. securities due to, among other factors, less publicly available information, less stringent and less uniform accounting, auditing and financial reporting standards, less liquid and more volatile markets, higher transaction and custody costs, additional taxes, less investor protection, delayed or less frequent settlement, political or social instability, civil unrest, acts of terrorism, regional economic volatility, and the imposition of sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and/or other governments. In addition, the ongoing conflicts between Russia and Ukraine and among Israel, Hamas, Iran and other militant groups in the Middle East have caused and could continue to cause market disruptions in the regions and globally and thus could affect the value of the Fund&#x2019;s investments. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Foreign Currency Risk:&lt;/span&gt;&#160;the risk that foreign currencies may decline in value relative to the U.S. dollar and affect the Fund&#x2019;s investments in foreign currencies, in securities that are denominated, trade, and/or receive revenues in foreign currencies, or in derivatives that provide exposure to foreign currencies. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Swap Agreements Risk:&lt;/span&gt; the risk of investing in swaps, which, in addition to risks applicable to derivatives generally, includes: (1)&#160;the inability to assign a swap contract without the consent of the counterparty; (2)&#160;potential default of the counterparty to a swap for those not traded through a central counterparty; (3)&#160;absence of a liquid secondary market for any particular swap at any time; and (4)&#160;possible inability of the Fund to close out a swap transaction at a time that otherwise would be favorable for it to do so. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Cybersecurity Risk:&lt;/span&gt; With the increased use of technologies such as the Internet to conduct business, the Fund is susceptible to operational, information security, and related &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
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&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; risks. Cyber incidents affecting the Fund or its service providers may cause disruptions and impact business operations, potentially resulting in financial losses, interference with the Fund&#x2019;s ability to calculate its NAV, impediments to trading, the inability of shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, or additional compliance costs. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Portfolio Management Risk:&lt;/span&gt; the risk that an investment strategy may fail to produce the intended results. Also, because the Fund may use multiple investment strategies, it may use a strategy that produces a less favorable result than would have been produced by another strategy. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Liquidity Risk:&lt;/span&gt; the risk that lack of a ready market or restrictions on resale may limit the ability of the Fund to sell a security at an advantageous time or price. In addition, the Fund, by itself or together with other accounts managed by the Adviser, may hold a position in a security that is large relative to the typical trading volume for that security, which can make it difficult for the Fund to dispose of the position at an advantageous time or price. Over recent years, the fixed-income markets have grown more than the ability of dealers to make markets, which can further constrain liquidity and increase the volatility of portfolio valuations. High levels of redemptions in bond funds in response to market conditions could cause greater losses as a result. Regulations such as the Volcker Rule or future regulations may further constrain the ability of market participants to create liquidity, particularly in times of increased market volatility. The liquidity of the Fund&#x2019;s assets may change over time. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Valuation Risk:&lt;/span&gt; the risk that the portfolio instruments may be sold at prices different from the values established by the Fund, particularly for investments that trade in low volume, in volatile markets or over the counter or that are fair valued. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Prepayment Risk:&lt;/span&gt; the risk that in times of declining interest rates, the Fund&#x2019;s higher yielding securities may be prepaid and the Fund may have to replace them with securities having a lower yield. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Extension Risk:&lt;/span&gt; the risk that in times of rising interest rates, borrowers may pay off their debt obligations more slowly, causing securities considered short- or intermediate-term to become longer-term securities that fluctuate more widely in response to changes in interest rates than shorter-term securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Leverage Risk:&lt;/span&gt; the risk that leverage may result from certain transactions, including the use of derivatives and borrowing. This may impair the Fund&#x2019;s liquidity, cause it to liqui-&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;color:#000000;text-align:left;"&gt;&#160;&lt;/td&gt;
&lt;td style="width:0.75pt;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;"&gt; &lt;div style="margin-top:0pt;margin-bottom:0pt;font-family:arial;font-size:10pt;"&gt; date positions at an unfavorable time, increase its volatility or otherwise cause it not to achieve its intended result. To the extent required by applicable law or regulation, the Fund will reduce leverage risk by either segregating an equal amount of liquid assets or &#x201c;covering&#x201d; the transactions that introduce such risk. &lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Counterparty Risk:&lt;/span&gt; the risk that the other party to a contract, such as a derivatives contract, may not fulfill its contractual obligations. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000034126Member_USGovernmentSecuritiesRiskMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;U.S. Government Securities Risk:&lt;/span&gt; the risk that debt securities issued or guaranteed by certain U.S. government agencies, instrumentalities, and sponsored enterprises are not supported by the full faith and credit of the U.S. government, and as a result, investments in securities or obligations issued by such entities involve credit risk greater than investments in other types of U.S. government securities. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
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      contextRef="D20250331_20250331_S000034126Member_MoneyMarketShortTermSecuritiesRiskMember"
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&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;border-spacing:0px;width:100%"&gt;
&lt;tr style="page-break-inside:avoid"&gt;
&lt;td style="width:9pt;vertical-align:top;text-align:left;"&gt;&#x2022;&lt;/td&gt;
&lt;td style="width:0.75pt;vertical-align:top;"&gt;&#160;&lt;/td&gt;
&lt;td style="vertical-align:top;text-align:left;"&gt;&lt;span style="font-weight:bold"&gt;Money Market/Short-Term Securities Risk:&lt;/span&gt; To the extent the Fund holds cash or invests in money market or short-term securities, the Fund may be less likely to achieve its investment objective. In addition, it is possible that the Fund&#x2019;s investments in these instruments could lose money. &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:RiskTextBlock>
    <oef:RiskTextBlock
      contextRef="D20250331_20250331_S000034126Member_RiskNotInsuredDepositoryInstitutionMember"
      id="t_411_29c621bb_efd6_a6a5_1fd4_1cecf17791ac">&lt;div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Your investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency, entity, or person. &lt;/div&gt;</oef:RiskTextBlock>
    <oef:BarChartAndPerformanceTableHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_132_d8c613aa_5970_4816_8cb0_a88518373a63">Performance Information </oef:BarChartAndPerformanceTableHeading>
    <oef:PerformanceNarrativeTextBlock
      contextRef="D20250331_20250331_S000034126Member"
      id="t_421_c803c71d_e167_1768_7285_3607347a9347">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. 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&#160;inception date of Class&#160;M shares and Class&#160;I shares of the Fund is September&#160;30, 2011. The inception date for the Plan Class&#160;shares is March&#160;6, 2020. The Fund&#x2019;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)&#160;241&#x2011;4671. &lt;/div&gt;</oef:PerformanceNarrativeTextBlock>
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      contextRef="D20250331_20250331_S000034126Member"
      id="t_412_06cb74be_5eb0_5e82_97a3_d96355c2172b">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&#x2019;s performance from year to year. The bar chart shows performance of the Fund&#x2019;s Class&#160;M shares. Class&#160;M performance is lower than Class&#160;I performance because Class&#160;I has lower expenses than Class&#160;M. The table compares the average annual total returns of the Fund to a broad-based securities market index and a secondary benchmark index.</oef:PerformanceInformationIllustratesVariabilityOfReturns>
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      contextRef="D20110930_20241231_C000105185Member"
      id="t_413_0b512cea_a2b5_6b0a_2fe5_aedb0ee9e414">2011-09-30</oef:PerfInceptionDate>
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      contextRef="D20110930_20241231_C000105185Member_AfterTaxesOnDistributionsMember"
      id="t_414_09c5c385_cd66_73b9_eb45_f94dab2fd661">2011-09-30</oef:PerfInceptionDate>
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      contextRef="D20110930_20241231_C000105185Member_AfterTaxesOnDistributionsAndSalesMember"
      id="t_415_65182c14_ae5b_7a67_c3f9_d25aa4a0c6f6">2011-09-30</oef:PerfInceptionDate>
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      contextRef="D20110930_20241231_C000105186Member"
      id="t_416_5a2c7e25_8554_9911_a956_5dc771c494dd">2011-09-30</oef:PerfInceptionDate>
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      contextRef="D20200306_20241231_C000218402Member"
      id="t_417_be3399ca_ce73_c3b3_284c_92f59dfc1ff8">2020-03-06</oef:PerfInceptionDate>
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      contextRef="D20250331_20250331_S000034126Member"
      id="t_418_d2c6d331_4b08_1820_a9c4_d2e8369f0ec3">The Fund&#x2019;s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.</oef:PerformancePastDoesNotIndicateFuture>
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      contextRef="D20250331_20250331_S000034126Member"
      id="t_419_e814c33a_dc30_1a42_38ff_9f0956cf419e">www.tcw.com</oef:PerformanceAvailabilityWebSiteAddress>
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      contextRef="D20250331_20250331_S000034126Member"
      id="t_420_c9da4aab_1496_410f_1525_73d25e0a96a5">(800)&#160;241&#x2011;4671</oef:PerformanceAvailabilityPhone>
    <oef:BarChartHeading
      contextRef="D20250331_20250331_S000034126Member"
      id="t_422_92cc76f3_596c_ded9_9c29_89a88b1d989f">Unconstrained Bond Fund &#x2013; Class&#160;M Shares Annual Total Returns for Year Ended 12/31 </oef:BarChartHeading>
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      contextRef="D20250331_20250331_S000034126Member"
      id="t_427_55f37460_c693_ed61_8211_c31420a56f71">&lt;div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:arial;"&gt;Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025: 4.87% &lt;/div&gt;
&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:arial;font-size:10pt;width:100%;border-spacing:0px"&gt;
&lt;tr&gt;
&lt;td style="width:14%;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:3%;"&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td style="width:0pt;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;width:5%;"&gt;&lt;/td&gt;
&lt;td style="width:66%;"&gt;&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt;background-color:#cceeff"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Highest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;6.35%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter ended June&#160;30, 2020)&lt;/td&gt; &lt;/tr&gt;
&lt;tr style="page-break-inside:avoid;font-family:arial;font-size:10pt"&gt;
&lt;td style="vertical-align:top;"&gt;&lt;span style="font-weight:bold"&gt;Lowest:&lt;/span&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&#160;&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;text-align:right;"&gt;-5.99%&lt;/td&gt;
&lt;td style="white-space:nowrap;vertical-align:bottom;"&gt;&lt;/td&gt;
&lt;td style="vertical-align:bottom;"&gt;&#160;&#160;&lt;/td&gt;
&lt;td style="vertical-align:bottom;white-space:nowrap;"&gt;(quarter ended March&#160;31, 2020)&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;</oef:BarChartClosingTextBlock>
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      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      id="t_423_34d5fc4f_bfb1_e4b9_e520_a3b76135043c">Year&#x2011;to&#x2011;Date Total Return of Class&#160;M Shares as of June&#160;30, 2025:</oef:YearToDateReturnLabel>
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      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      id="t_424_842fd657_64b2_0959_085f_c1f73b0979d2">2025-06-30</oef:BarChartYearToDateReturnDate>
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      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      decimals="4"
      id="h_437_437abe14_79e1_af09_c638_eca7805b6fa7"
      unitRef="pure">0.0487</oef:BarChartYearToDateReturn>
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      id="h_403_3cfb9350_105d_4d58_9032_a759da463ed6">Highest:</oef:HighestQuarterlyReturnLabel>
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      decimals="4"
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      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
      id="t_425_6abd0684_6466_dab6_7052_187640698e0d">2020-06-30</oef:BarChartHighestQuarterlyReturnDate>
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      decimals="4"
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      contextRef="D20250331_20250331_S000034126Member_C000105185Member"
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      id="t_428_2a1ee34f_6900_e822_2d10_af36766a8964">Average Annual Total Returns (For Periods Ended December&#160;31, 2024) </oef:PerformanceTableHeading>
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      decimals="4"
      id="h_409_c1944263_69d1_4c81_8e63_d495f7eac8b0"
      unitRef="pure">0.0579</oef:AvgAnnlRtrPct>
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      contextRef="FiveY2024_C000105185Member"
      decimals="4"
      id="h_410_3ae71116_6d7f_4ad3_9dae_5fb32ecb19f6"
      unitRef="pure">0.0186</oef:AvgAnnlRtrPct>
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      contextRef="TenY2024_C000105185Member"
      decimals="4"
      id="h_411_a2fe4b05_96ac_4652_a459_dc82b8055cd5"
      unitRef="pure">0.0231</oef:AvgAnnlRtrPct>
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      id="h_412_af23e294_f977_4874_b2ab_2b9478af539e"
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      decimals="4"
      id="h_413_a7cb4a59_f6fa_4aee_8d74_11ec329f12b4"
      unitRef="pure">0.0312</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_414_479a76c9_8c95_426f_941d_6ffa7f322b23"
      unitRef="pure">-0.0007</oef:AvgAnnlRtrPct>
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      decimals="4"
      id="h_415_dbbe83b3_d94f_4797_9344_1ddc55795ffd"
      unitRef="pure">0.0076</oef:AvgAnnlRtrPct>
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      contextRef="D20110930_20241231_C000105185Member_AfterTaxesOnDistributionsMember"
      decimals="4"
      id="h_416_7590c092_fc34_4be8_9b3b_5cb715dbcbef"
      unitRef="pure">0.0245</oef:AvgAnnlRtrPct>
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      decimals="4"
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      decimals="4"
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      unitRef="pure">0.0061</oef:AvgAnnlRtrPct>
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      id="t_431_dc6703d6_f179_e260_08b9_27ff6ed50859"> After&#x2011;tax returns shown are not relevant to investors who hold their fund shares through tax&#x2011;deferred arrangements, such as 401(k) plans or individual retirement accounts.</oef:PerformanceTableNotRelevantToTaxDeferred>
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      id="t_432_2509b80a_85b6_4104_38a3_22ce95bc7531"> After&#x2011;tax returns are shown for only Class&#160;M Shares.After&#x2011;tax returns for other classes will vary.</oef:PerformanceTableOneClassOfAfterTaxShown>
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