This table describes the fees and expenses that you may pay if you buy, hold and sell Institutional Shares of the Fund. This table does not reflect the fees and expenses associated with any variable annuity contract or variable life insurance policy that uses the Fund as an investment option. Had those fees and expenses been included, overall fees and expenses would be higher.

Operating Expenses Caption [Text]

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Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Fee Waiver or Reimbursement over Assets, Date of Termination

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April 30, 2022

Portfolio Turnover [Heading]

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Portfolio Turnover

Portfolio Turnover [Text Block]

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The Fund pays transaction costs when it buys and sells securities or instruments (

i.e

., “turns over” its portfolio). A high rate of portfolio turnover may result in increased transaction costs, including brokerage commissions, which must be borne by the Fund and its shareholders. These costs are not reflected in the annual fund operating expenses or in the expense example above, but are reflected in the Fund’s performance. The Fund’s portfolio turnover rate for the fiscal year ended December 31, 2020 was 71% of the average value of its portfolio.

Portfolio Turnover, Rate

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71.00%

Expense Example [Heading]

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Expense Example

Expense Example Narrative [Text Block]

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This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. This Example does not reflect the fees and expenses associated with any variable annuity contract or variable life insurance policy that uses the Fund as an investment option. Had those fees and expenses been included, the costs shown below would be higher. The Example assumes that you invest $10,000 in Institutional Shares of the Fund for the time periods indicated and then redeem all of your Institutional Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same (except that the Example incorporates any applicable fee waiver and/or expense limitation arrangements for only the first year). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Strategy [Heading]

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Principal Strategy

Strategy Narrative [Text Block]

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The Fund invests, under normal circumstances, at least 90% of its total assets measured at the time of purchase (“Total Assets”) in equity investments with a primary focus on mid-cap companies. The Fund seeks to achieve its investment objective by investing, under normal circumstances, in companies that are considered by the Investment Adviser to be positioned for long-term growth. Although the

Fund invests primarily in publicly traded U.S. securities, it may invest up to 25% of its Total Assets in foreign securities, including securities of issuers in countries with emerging markets or economies (“emerging countries”) and securities quoted in foreign currencies. The Fund may also invest in privately held companies and companies that only recently began to trade publicly.

The Fund’s fundamental equity growth investment process involves evaluating potential investments based on specific characteristics believed to indicate a high-quality business with sustainable growth, including strong business franchises, favorable long-term prospects, and excellent management. The Investment Adviser will also consider valuation of companies when determining whether to buy and/or sell securities. The Investment Adviser may integrate environmental, social and governance (“ESG”) factors with traditional fundamental factors as part of its fundamental research process. No one factor or consideration is determinative in the stock selection process. The Investment Adviser may decide to sell a position for various reasons, including when a company’s fundamental outlook deteriorates, because of valuation and price considerations, for risk management purposes, or when a company is deemed to be misallocating capital or a company no longer fits within the Fund’s definition of a mid cap company. In addition, the Investment Adviser may sell a position in order to meet shareholder redemptions.

The Fund’s benchmark index is the Russell Midcap

Growth Index.

Risk [Heading]

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Principal Risks of the Fund

Risk Narrative [Text Block]

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Loss of money is a risk of investing in the Fund. An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or any government agency. The Fund should not be relied upon as a complete investment program. There can be no assurance that the Fund will achieve its investment objective. Investments in the Fund involve substantial risks which prospective investors should consider carefully before investing. The Fund's principal risks are presented below in alphabetical order, and not in the order of importance or potential exposure.

Foreign and Emerging Countries Risk.

Foreign securities may be subject to risk of loss because of more or less foreign government regulation; less public information; less stringent investor protections; less stringent accounting, corporate governance, financial reporting and disclosure standards; and less economic, political and social stability in the countries in which the Fund invests. The imposition of exchange controls (including repatriation restrictions), sanctions, confiscations, trade restrictions (including tariffs) and other government restrictions by the United States and other governments, or from problems in share registration, settlement or custody, may also result in losses. Foreign risk also involves the risk of negative foreign currency exchange rate fluctuations, which may cause the value of securities denominated in such foreign currency (or other instruments through which the Fund has exposure to foreign currencies) to decline in value. Currency exchange rates may fluctuate significantly over short periods of time. These risks may be more pronounced in connection with the Fund’s investments in securities of issuers located in, or otherwise economically tied to, emerging countries.

Investment Style Risk.

Different investment styles (

e.g

., “growth,” “value” or “quantitative”) tend to shift in and out of favor depending upon market and economic conditions and investor sentiment. The Fund may outperform or underperform other funds that invest in similar asset classes but employ different investment styles. Growth investing is an example of an investment style. Growth companies are often expected by investors to increase their earnings at a certain rate. When these expectations are not met, investors can punish the stocks inordinately even if earnings showed an absolute increase.

Large Shareholder Transactions Risk.

The Fund may experience adverse effects when certain large shareholders purchase or redeem large amounts of shares of the Fund. Such large shareholder redemptions, which may occur rapidly or unexpectedly, may cause the Fund to sell portfolio securities at times when it would not otherwise do so, which may negatively impact the Fund’s net asset value (“NAV”) and liquidity. Similarly, large Fund share purchases may adversely affect the Fund’s performance to the extent that the Fund is delayed in investing new cash or otherwise maintains a larger cash position than it ordinarily would. These transactions may also increase transaction costs. In addition, a large redemption could result in the Fund’s current expenses being allocated over a smaller asset base, leading to an increase in the Fund’s expense ratio.

Market Risk

The value of the securities in which the Fund invests may go up or down in response to the prospects of individual companies, particular sectors or governments and/or general economic conditions throughout the world due to increasingly interconnected global economies and financial markets. Events such as war, acts of terrorism, social unrest, natural disasters, the spread of infectious illness or other public health threats could also significantly impact the Fund and its investments.

Mid-Cap and Small-Cap Risk.

Investments in mid-capitalization and small-capitalization companies involve greater risks than those associated with larger, more established companies. These securities may be subject to more abrupt or erratic price movements and may lack sufficient market liquidity, and these issuers often face greater business risks.

Stock Risk.

Stock prices have historically risen and fallen in periodic cycles. U.S.and foreign stock markets have experienced periods of substantial price volatility in the past and may do so again in the future.

Risk Lose Money [Text]

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Loss of money is a risk of investing in the Fund.

Risk Not Insured Depository Institution [Text]

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An investment in the Fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) or any government agency.

Bar Chart and Performance Table [Heading]

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Performance

Performance Narrative [Text Block]

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The bar chart and table below provide an indication of the risks of investing in the Fund by showing: (a) changes in the performance of the Fund’s Institutional Shares from year to year; and (b) how the average annual total returns of the Fund’s Institutional Shares compare to those of a broad-based securities market index. The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. Performance reflects applicable fee waivers and/or expense limitations in effect during the periods

shown. In addition, performance reflects Fund level expenses but does not reflect the fees and expenses associated with any variable annuity contract or variable life insurance policy that uses the Fund as an investment option for any contract or policy. Had performance reflected all of those fees and expenses, performance would have been reduced. Updated performance information is available at no cost at www.gsamfunds.com/vit or by calling the phone number on the back cover of the Prospectus.

Performance Information Illustrates Variability of Returns [Text]

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Performance Availability Website Address [Text]

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www.gsamfunds.com/vit

Performance Past Does Not Indicate Future [Text]

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The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

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CALENDAR YEAR

Bar Chart Closing [Text Block]

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During the periods shown in the chart above:	Returns	Quarter ended
Best Quarter Return	32.46%	June 30, 2020
Worst Quarter Return	-17.22%	March 31, 2020

Performance Table Heading

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AVERAGE ANNUAL TOTAL RETURN For the period ended December 31, 2020

Institutional | Goldman Sachs Growth Opportunities Fund | Institutional Shares

Risk/Return:

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Management Fees

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0.87%

Distribution and Service (12b-1) Fees

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none

Other Expenses

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0.36%

Total Annual Fund Operating Expenses

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1.23%

Fee Waiver and Expense Limitation

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(0.40%)

^[1]

Total Annual Fund Operating Expenses After Fee Waiver and Expense Limitation

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0.83%

1 Year

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$ 85

3 Years

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351

5 Years

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637

10 Years

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$ 1,453

2014

rr_AnnualReturn2014

11.32%

2015

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(5.20%)

2016

rr_AnnualReturn2016

1.71%

2017

rr_AnnualReturn2017

27.14%

2018

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(4.17%)

2019

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34.35%

2020

rr_AnnualReturn2020

44.33%

Highest Quarterly Return, Label

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Best Quarter Return

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2020

Highest Quarterly Return

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32.46%

Lowest Quarterly Return, Label

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Worst Quarter Return

Lowest Quarterly Return, Date

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Mar. 31, 2020

Lowest Quarterly Return

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(17.22%)

1 Year

rr_AverageAnnualReturnYear01

44.33%

5 Years

rr_AverageAnnualReturnYear05

19.17%

Since Inception

rr_AverageAnnualReturnSinceInception

15.58%

Inception Date

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Apr. 30, 2013

Institutional | Goldman Sachs Growth Opportunities Fund | Russell Midcap® Growth Index (reflects no deduction for fees or expenses)

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

35.47%

5 Years

rr_AverageAnnualReturnYear05

18.64%

Since Inception

rr_AverageAnnualReturnSinceInception

16.20%

[1]

The Investment Adviser has agreed to (i) waive a portion of the management fee in order to achieve an effective net management fee rate of 0.81% of the Fund’s average daily net assets, and (ii) reduce or limit “Other Expenses” (excluding acquired fund fees and expenses, transfer agency fees and expenses, taxes, interest, brokerage fees, expenses of shareholder meetings, litigation and indemnification, and extraordinary expenses) to 0.004% of the Fund’s average daily net assets. These arrangements will remain in effect through at least April 30, 2022, and prior to such date the Investment Adviser may not terminate the arrangements without the approval of the Board of Trustees. The Fund’s “Total Annual Fund Operating Expenses After Fee Waiver and Expense Limitation” have been restated to reflect the management fee and distribution and service fee waivers currently in effect.