Label	Element	Value
Risk Return Abstract	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	EQ ADVISORS TRUST
Prospectus Date	rr_ProspectusDate	May 01, 2025
EQ Money Market Portfolio
Risk Return Abstract	rr_RiskReturnAbstract
Risk/Return [Heading]	rr_RiskReturnHeading	<span style="color:#000000;font-family:Arial;font-size:11pt;font-weight:bold;">EQ/Money Market Portfolio</span><span style="color:#000000;font-family:Arial;font-size:11pt;font-weight:bold;line-height:13pt;">  </span><span style="color:#000000;font-family:Arial;font-size:11pt;font-weight:bold;">— Class IA, Class IB and Class K Shares</span>
Objective [Heading]	rr_ObjectiveHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Investment Objective:</span>
Objective, Primary [Text Block]	rr_ObjectivePrimaryTextBlock	Seeks to obtain a high level of current income, preserve its assets and maintain liquidity.
Expense [Heading]	rr_ExpenseHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Fees and Expenses of the Portfolio</span>
Expense Narrative [Text Block]	rr_ExpenseNarrativeTextBlock	The following table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Portfolio. The table below does not reflect any fees and expenses associated with variable life insurance contracts and variable annuity certificates and contracts (“Contracts”), which would increase overall fees and expenses. See the Contract prospectus for a description of those fees and expenses.
Shareholder Fees Caption [Text]	rr_ShareholderFeesCaption	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Shareholder Fees</span> <br/><span style="color:#000000;font-family:Arial;font-size:10pt;">(fees paid directly from your investment)</span>
Operating Expenses Caption [Text]	rr_OperatingExpensesCaption	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Annual Portfolio Operating Expenses</span><span style="color:#000000;font-family:Arial;font-size:10pt;">(expenses that you pay each year as a percentage of the value of your investment)</span>
Other Expenses, New Fund, Based on Estimates [Text]	rr_OtherExpensesNewFundBasedOnEstimates	<span style="color:#000000;font-family:Arial;font-size:8pt;">Based on estimated amounts for the current fiscal year.</span>
Expense Example [Heading]	rr_ExpenseExampleHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Example</span>
Expense Example Narrative [Text Block]	rr_ExpenseExampleNarrativeTextBlock	This Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other portfolios. The Example assumes that you invest $10,000 in the Portfolio for the periods indicated, that your investment has a 5% return each year, and that the Portfolio’s operating expenses remain the same. This Example does not reflect any Contract-related fees and expenses including redemption fees (if any) at the Contract level. If such fees and expenses were reflected, the total expenses would be higher. Although your actual costs may be higher or lower, based on these assumptions, whether you redeem or hold your shares, your costs would be:
Strategy [Heading]	rr_StrategyHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;text-transform:uppercase;">Investments, Risks, and Performance</span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Principal Investment Strategy</span>
Strategy Narrative [Text Block]	rr_StrategyNarrativeTextBlock	The Portfolio invests 99.5% or more of its total assets in: •  debt securities issued or guaranteed as to principal or interest by the U.S. government, or by U.S. government agencies or instrumentalities; •  repurchase agreements that are collateralized fully by cash items or U.S. Treasury and U.S. government securities; and •  cash. The Portfolio invests only in U.S. dollar-denominated securities and in instruments with a remaining maturity of 397 calendar days or less at the time of investment. Debt securities issued or guaranteed as to principal or interest by the U.S. government, or by U.S. government agencies or instrumentalities, may include, among others, direct obligations of the U.S. Treasury (such as Treasury bills, notes or bonds), obligations issued or guaranteed as to principal and interest (but not as to market value) by the U.S. government, its agencies or its instrumentalities, and mortgage-backed securities issued or guaranteed by government agencies or government-sponsored enterprises. A repurchase agreement is a transaction in which the Portfolio purchases securities or other obligations from a bank or securities dealer (or its affiliate) and simultaneously commits to resell them to a counterparty at an agreed-upon date or upon demand and at a price reflecting a market rate of interest unrelated to the coupon rate or maturity of the purchased obligations. The difference between the original purchase price and the repurchase price is normally based on prevailing short-term interest rates. Under a repurchase agreement, the seller is required to furnish collateral (i.e., U.S. Treasury or U.S. government securities) at least equal in value or market price to the amount of the seller’s repurchase obligation. In evaluating whether to enter into a repurchase agreement, the Adviser and Sub-Adviser will carefully consider the creditworthiness of the seller. As prevailing market conditions and the economic environment warrant, and at the discretion of the Adviser and Sub-Adviser, a percentage of the Portfolio’s total assets may be held in cash. During such periods, cash assets will be held in the Portfolio’s custody account. Without limitation, such a strategy may be deemed advisable during periods where the interest rate on newly-issued U.S. Treasury securities is extremely low or where no interest rate is paid at all, or when Treasuries are in short supply, or due to a dislocation in the Treasury or broader fixed income markets. The Portfolio maintains a dollar-weighted average portfolio maturity of 60 days or less, a dollar-weighted average life to maturity of 120 days or less, and uses the amortized cost method of valuation to seek to maintain a stable $1.00 net asset value (“NAV”) per share price. The Adviser or Sub-Adviser may, in its sole discretion, maintain a temporary defensive position with respect to the Portfolio. Although not required to do so, as a temporary defensive measure, the Adviser may waive or cause to be waived fees owed by the Portfolio, in attempting to maintain a stable $1.00 NAV per share. The Portfolio intends to qualify as a “government money market fund,” as such term is defined in or interpreted under Rule 2a-7 under the Investment Company Act of 1940, as amended. “Government money market funds” are exempt from rules that require money market funds to impose a fee on fund redemptions (liquidity fee). While the Portfolio's Board of Trustees may elect to impose a discretionary liquidity fee upon the redemption of Portfolio shares in the future, the Board of Trustees has not elected to do so at this time.
Risk [Heading]	rr_RiskHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Principal Risks</span>
Bar Chart and Performance Table [Heading]	rr_BarChartAndPerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Risk/Return Bar Chart and Table</span>
Performance Narrative [Text Block]	rr_PerformanceNarrativeTextBlock	The bar chart and table below provide some indication of the risks of investing in the Portfolio by showing changes in the Portfolio’s performance from year to year and by showing how the Portfolio’s average annual total returns for the past one, five and ten years through December 31, 2024, compared to the returns of a broad-based securities market index.Past performance is not an indication of future performance.Prior to April 1, 2016, the Portfolio was not designated as a “government money market fund,” as defined in Rule 2a-7 under the Investment Company Act of 1940, and invested in certain types of securities that it is no longer permitted to hold. Consequently, the performance shown below may have been different if the current limitations on the Portfolio’s investments had been in effect prior to its conversion to a government money market fund.Class K shares have not commenced operations as of the date of this Prospectus.The performance results do not reflect any Contract-related fees and expenses, which would reduce the performance results.
Performance Information Illustrates Variability of Returns [Text]	rr_PerformanceInformationIllustratesVariabilityOfReturns	<span style="font-family:Arial;font-size:10pt;margin-left:0%;">The bar chart and table below provide some indication of the risks of investing in the Portfolio by showing changes in the Portfolio’s performance from year to year and by showing how the Portfolio’s average annual total returns for the past one, five and ten years through December 31, </span><span style="font-family:Arial;font-size:10pt;">2024, compared to the returns of a broad-based securities market index.</span>
Performance One Year or Less [Text]	rr_PerformanceOneYearOrLess	<span style="color:#000000;font-family:Arial;font-size:10pt;">Class K shares have not commenced operations as of the date of this Prospectus.</span>
Performance Past Does Not Indicate Future [Text]	rr_PerformancePastDoesNotIndicateFuture	<span style="font-family:Arial;font-size:10pt;">Past performance is not an indication of future performance.</span>
Bar Chart [Heading]	rr_BarChartHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Calendar Year Annual Total Returns — Class IB</span>
Bar Chart Does Not Reflect Sales Loads [Text]	rr_BarChartDoesNotReflectSalesLoads	<span style="color:#000000;font-family:Arial;font-size:10pt;">The performance results do not reflect any Contract-related fees and expenses, which would reduce the performance results.</span>
Bar Chart Closing [Text Block]	rr_BarChartClosingTextBlock	Best quarter (% and time period)1.19%2023 4th QuarterWorst quarter (% and time period)0.00%2015 1st Quarter
Performance Table Heading	rr_PerformanceTableHeading	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Average Annual Total Returns</span>
Money Market Seven Day Yield, Caption [Text]	rr_MoneyMarketSevenDayYieldCaption	<span style="font-family:Arial;font-size:8pt;">The Portfolio’s 7-day yield as of </span><span style="font-family:Arial;font-size:8pt;">December 31, 2024</span><span style="font-family:Arial;font-size:8pt;"> was </span><span style="font-family:Arial;font-size:8pt;">3.87</span><span style="font-family:Arial;font-size:8pt;">%.</span>
Money Market Seven Day Yield	rr_MoneyMarketSevenDayYield	3.87%
Money Market Seven Day Yield Date	eqat_MoneyMarketSevenDayYieldDate	<span style="font-family:Arial;font-size:8pt;">December 31, 2024</span>
EQ Money Market Portfolio | Risk Lose Money [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	You could lose money by investing in the Portfolio.
EQ Money Market Portfolio | Risk Money Market Fund May Not Preserve Dollar [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Although the Portfolio seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so.
EQ Money Market Portfolio | Risk Money Market Fund Sponsor May Not Provide Support [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	The Portfolio’s investment adviser and its affiliates are not required to reimburse the Portfolio for losses, and you should not expect that the investment adviser or its affiliates will provide financial support to the Portfolio at any time, including during periods of market stress.
EQ Money Market Portfolio | Risk Not Insured Depository Institution [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	An investment in the Portfolio is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.
EQ Money Market Portfolio | Money Market Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Money Market Risk —  Although a money market fund is designed to be a relatively low risk investment, it is not free of risk. Despite the short maturities and high credit quality of a money market fund’s investments, increases in interest rates and deteriorations in the credit quality of the instruments the money market fund has purchased may reduce the money market fund’s yield and can cause the price of a money market security to decrease. In addition, a money market fund is subject to the risk that the value of an investment may be eroded over time by inflation. As a money market fund, the Portfolio is subject to specific rules that affect the manner in which the Portfolio and other money market funds are structured and operated and may impact the Portfolio’s expenses, operations, returns and liquidity.
EQ Money Market Portfolio | Net Asset Value Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Net Asset Value Risk —  Although the Portfolio seeks to do so, it may not be able to maintain a stable $1.00 NAV per share at all times. The Portfolio’s shareholders should not rely on or expect the Portfolio’s investment adviser or its affiliates to make a capital infusion, enter into a capital support agreement, or take other actions to help the Portfolio maintain a stable $1.00 share price at any time, including during periods of market stress. In the event that any money market fund fails to maintain a stable net asset value (or if there is a perceived threat that a money market fund is likely to fail to maintain a stable net asset value), money market funds in general, including the Portfolio, could face increased redemption pressures, which could jeopardize the stability of their net asset values. Certain other money market funds have in the past failed to maintain stable net asset values, and there can be no assurance that such failures and resulting redemption pressures will not occur in the future. A low- or negative-interest rate environment may prevent the Portfolio from providing a positive yield, cause the Portfolio to pay Portfolio expenses out of Portfolio assets, or impair the Portfolio’s ability to maintain a stable $1.00 NAV per share. In addition, the purchase and redemption activity of a few large investors in the Portfolio may have a significant adverse effect on other shareholders.
EQ Money Market Portfolio | U.S. Government Securities Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	U.S. Government Securities Risk —  Although the Portfolio may hold securities that carry U.S. government guarantees, these guarantees do not extend to shares of the Portfolio itself and do not guarantee the market prices of the securities. Securities issued by the U.S. Treasury or other agencies and instrumentalities of the U.S. government may decline in value as a result of, among other things, changes in interest rates, political events in the United States, international developments, including strained relations with foreign countries, and changes in the credit rating of, or investor perceptions regarding the creditworthiness of, the U.S. government. Furthermore, not all securities issued by the U.S. government and its agencies and instrumentalities are backed by the full faith and credit of the U.S. Treasury. Securities not backed by the full faith and credit of the U.S. Treasury involve greater credit risk than investments in other types of U.S. government securities.
EQ Money Market Portfolio | Interest Rate Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Interest Rate Risk —  Changes in interest rates may affect the yield, liquidity and value of investments in income producing or debt securities. Changes in interest rates also may affect the value of other securities. When interest rates rise, the value of the Portfolio’s debt securities generally declines. Conversely, when interest rates decline, the value of the Portfolio’s debt securities generally rises. Typically, the longer the maturity (i.e., the term of a debt security) or duration (i.e., a measure of the sensitivity of a debt security to changes in market interest rates, based on the entire cash flow associated with the security) of a debt security, the greater the effect a change in interest rates could have on the security’s price. Thus, the sensitivity of the Portfolio’s debt securities to interest rate risk will increase the greater the duration of those securities. Changes in government or central bank monetary policy may have a substantial and immediate impact on interest rates, which could result in losses to the Portfolio. The Portfolio’s yield will vary; it is not fixed for a specific period. There is no assurance that the Portfolio will provide a certain level of income or that the Portfolio’s yield will remain positive.
EQ Money Market Portfolio | Credit Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Credit Risk —  The Portfolio is subject to the risk that the issuer or guarantor of a fixed income security, or the counterparty to a repurchase agreement or other transaction, is unable or unwilling, or is perceived as unable or unwilling, to make timely interest or principal payments or otherwise honor its obligations, or defaults completely, which may cause the Portfolio’s holdings to lose value. The downgrade of a security’s credit rating may decrease its value. The Portfolio may experience a significant or complete loss on a fixed income security or a transaction.
EQ Money Market Portfolio | Market Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Market Risk —  The Portfolio is subject to the risk that the securities markets will move down, sometimes rapidly and unpredictably, based on overall economic conditions and other factors, which may negatively affect Portfolio performance. Securities markets also may experience long periods of decline in value. The value of a security can be more volatile than the market as a whole and can perform differently from the market as a whole. Any issuer of securities may perform poorly, causing the value of its securities to decline. Poor performance may be caused by a variety of factors, such as poor management decisions; reduced demand for the issuer’s goods or services; competitive pressures; negative perception in the marketplace; loss of major customers; strategic initiatives such as mergers or acquisitions and the market response to any such initiatives; and the historical and prospective earnings of the issuer. The value of a security also may decline due to general market conditions, such as real or perceived adverse economic or political conditions, inflation rates and/or investor expectations concerning such rates, changes in interest rates, recessions, or adverse investor sentiment generally. During a general downturn in the securities markets, multiple asset classes may decline in value simultaneously. Even when securities markets perform well, there can be no assurance that the investments held by the Portfolio will increase in value along with the broader market. Changes in the financial condition of (or other event affecting) a single issuer can impact an individual sector or industry, or the securities markets as a whole. The value of a security also may decline due to factors that affect a particular sector or industry, such as tariffs, labor shortages, or increased production costs and competitive conditions within the sector or industry. Geopolitical events, including acts of terrorism, tensions, war or other open conflicts between nations, or political or economic dysfunction within nations that are global economic powers or major oil or other commodities producers, may lead to overall instability in world economies and markets generally and have led, and may in the future lead, to increased market volatility and may have adverse long-term effects. World markets, or those in a particular region, may all react in similar fashion to economic, political or other developments. Events such as environmental and natural disasters or other catastrophes, public health crises (such as epidemics and pandemics), social unrest, and cybersecurity incidents, and governments’ reactions (or failure to react) to such events, could cause uncertainty in the markets and may adversely affect the performance of the global economy. Impacts from climate change may include significant risks to global financial assets and economic growth. The extent and duration of such events and resulting market disruptions could be substantial and could magnify the impact of other risks to the Portfolio. The value and liquidity of the Portfolio’s investments may be negatively affected by developments in other countries and regions, whether or not the Portfolio invests in securities of issuers located in or with significant exposure to the countries or regions directly affected. Changes in government or central bank policies, changes in existing laws and regulations, and political, diplomatic and other events within the United States and abroad could cause uncertainty in the markets, may affect investor and consumer confidence, and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. High public debt and deficits in the United States and other countries create ongoing systemic and market risks and policymaking uncertainty and may negatively affect economic conditions and the values of markets, sectors and companies in which the Portfolio invests. In addition, markets and market participants are increasingly reliant on information data systems. Inaccurate data, software or other technology malfunctions, programming inaccuracies, unauthorized use or access, and similar circumstances may impair the performance of these systems and may have an adverse impact upon a single issuer, a group of issuers, or the market at large. Furthermore, impacts from the rapidly growing use of artificial intelligence technologies, including by market participants, may include significant risks to global financial markets.
EQ Money Market Portfolio | Repurchase Agreements Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Repurchase Agreements Risk —  Repurchase agreements carry certain risks, including risks that are not associated with direct investments in securities. If a seller under a repurchase agreement were to default on the agreement and be unable to repurchase the security subject to the repurchase agreement, the Portfolio would look to the collateral underlying the seller’s repurchase agreement, including the securities or other obligations subject to the repurchase agreement, for satisfaction of the seller’s obligation to the Portfolio. The Portfolio’s right to liquidate the securities or other obligations subject to the repurchase agreement in the event of a default by the seller could involve certain costs and delays and, to the extent that proceeds from any sale upon a default of the obligation to repurchase are less than the repurchase price (e.g., due to transaction costs or a decline in the value of the collateral), the Portfolio could suffer a loss. In addition, if bankruptcy proceedings are commenced with respect to the seller, realization of the collateral may be delayed or limited and a loss may be incurred.
EQ Money Market Portfolio | Portfolio Management Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Portfolio Management Risk —  The Portfolio is subject to the risk that strategies used by an investment manager and its securities selections fail to produce the intended results. An investment manager’s judgments or decisions about the quality, relative yield or value of, or market trends affecting, a particular security or issuer, industry, sector, region or market segment, or about the economy or interest rates, may be incorrect or otherwise may not produce the intended results, which may result in losses to the Portfolio. In addition, many processes used in Portfolio management, including security selection, rely, in whole or in part, on the use of various technologies. The Portfolio may suffer losses if there are imperfections, errors or limitations in the quantitative, analytic or other tools, resources, information and data used, or the analyses employed or relied on, by an investment manager, or if such tools, resources, information or data are used incorrectly, fail to produce the desired results, or otherwise do not work as intended. There can be no assurance that the use of these technologies will result in effective investment decisions for the Portfolio. In addition, the Portfolio could experience losses if an investment manager’s judgments about the risks associated with the Portfolio’s investment program prove to be incorrect.
EQ Money Market Portfolio | Liquidity Risk [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Liquidity Risk —  Although the Portfolio invests in a diversified portfolio of high-quality instruments, the Portfolio’s investments may become less liquid as a result of market developments or adverse investor perception.
EQ Money Market Portfolio | Risk Associated with Portfolio Holding Cash [Member]
Risk Return Abstract	rr_RiskReturnAbstract
Risk [Text Block]	rr_RiskTextBlock	Risk Associated with Portfolio Holding Cash —  The Portfolio may maintain cash assets, which may be significant, with counterparties such as the Trust’s custodian or its affiliates. Maintaining cash assets could negatively affect the Portfolio’s current yield and may also subject the Portfolio to additional risks, such as increased credit risk with respect to the custodian bank holding the assets and the risk that a counterparty may be unable or unwilling, or perceived as unable or unwilling, to honor its obligations.
EQ Money Market Portfolio | Class IA
Risk Return Abstract	rr_RiskReturnAbstract
Shareholder Fees (fees paid directly from your investment)	rr_ShareholderFeeOther
Management Fee	rr_ManagementFeesOverAssets	0.32%
Distribution and/or Service Fees (12b-1 fees)	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.11%
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	0.68%
1 Year	rr_ExpenseExampleYear01	$ 69
3 Years	rr_ExpenseExampleYear03	218
5 Years	rr_ExpenseExampleYear05	379
10 Years	rr_ExpenseExampleYear10	$ 847
OneYear	rr_AverageAnnualReturnYear01	4.65%
FiveYears	rr_AverageAnnualReturnYear05	2.10%
TenYears	rr_AverageAnnualReturnYear10	1.36%
EQ Money Market Portfolio | Class IB
Risk Return Abstract	rr_RiskReturnAbstract
Shareholder Fees (fees paid directly from your investment)	rr_ShareholderFeeOther
Management Fee	rr_ManagementFeesOverAssets	0.32%
Distribution and/or Service Fees (12b-1 fees)	rr_DistributionAndService12b1FeesOverAssets	0.25%
Other Expenses	rr_OtherExpensesOverAssets	0.11%
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	0.68%
1 Year	rr_ExpenseExampleYear01	$ 69
3 Years	rr_ExpenseExampleYear03	218
5 Years	rr_ExpenseExampleYear05	379
10 Years	rr_ExpenseExampleYear10	$ 847
2015	rr_AnnualReturn2015	none
2016	rr_AnnualReturn2016	none
2017	rr_AnnualReturn2017	0.40%
2018	rr_AnnualReturn2018	1.26%
2019	rr_AnnualReturn2019	1.52%
2020	rr_AnnualReturn2020	0.20%
2021	rr_AnnualReturn2021	0.16%
2022	rr_AnnualReturn2022	1.11%
2023	rr_AnnualReturn2023	4.47%
2024	rr_AnnualReturn2024	4.65%
Highest Quarterly Return, Label	rr_HighestQuarterlyReturnLabel	<span style="font-family:Arial;font-size:8pt;margin-left:0.0pt;">Best quarter (% and time period)</span>
Highest Quarterly Return, Date	rr_BarChartHighestQuarterlyReturnDate	Dec. 31, 2023
Highest Quarterly Return	rr_BarChartHighestQuarterlyReturn	1.19%
Lowest Quarterly Return, Label	rr_LowestQuarterlyReturnLabel	<span style="font-family:Arial;font-size:8pt;margin-left:0.0pt;">Worst quarter (% and time period)</span>
Lowest Quarterly Return, Date	rr_BarChartLowestQuarterlyReturnDate	Mar. 31, 2015
Lowest Quarterly Return	rr_BarChartLowestQuarterlyReturn	none
OneYear	rr_AverageAnnualReturnYear01	4.65%
FiveYears	rr_AverageAnnualReturnYear05	2.10%
TenYears	rr_AverageAnnualReturnYear10	1.36%
EQ Money Market Portfolio | Class K
Risk Return Abstract	rr_RiskReturnAbstract
Shareholder Fees (fees paid directly from your investment)	rr_ShareholderFeeOther
Management Fee	rr_ManagementFeesOverAssets	0.32%
Distribution and/or Service Fees (12b-1 fees)	rr_DistributionAndService12b1FeesOverAssets	none
Other Expenses	rr_OtherExpensesOverAssets	0.11%	[1]
Total Annual Portfolio Operating Expenses	rr_ExpensesOverAssets	0.43%
1 Year	rr_ExpenseExampleYear01	$ 44
3 Years	rr_ExpenseExampleYear03	138
5 Years	rr_ExpenseExampleYear05	241
10 Years	rr_ExpenseExampleYear10	$ 542
EQ Money Market Portfolio | ICE BofA U.S. 3-Month Treasury Bill Index (reflects no deduction for fees, expenses, or taxes)
Risk Return Abstract	rr_RiskReturnAbstract
OneYear	rr_AverageAnnualReturnYear01	5.28%
FiveYears	rr_AverageAnnualReturnYear05	2.48%
TenYears	rr_AverageAnnualReturnYear10	1.77%

[1] Based on estimated amounts for the current fiscal year.