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Label Element Value
Schwab VIT Balanced with Growth Portfolio  
Risk/Return: oef_RiskReturnAbstract  
Risk/Return [Heading] oef_RiskReturnHeading    Schwab® VIT Balanced with Growth Portfolio
Objective [Heading] oef_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] oef_ObjectivePrimaryTextBlock

The fund seeks long-term capital appreciation and income.

Expense Heading [Optional Text] oef_ExpenseHeading Fund Fees and Expenses
Expense Narrative [Text Block] oef_ExpenseNarrativeTextBlock

This table describes the fees and expenses 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 table and Example below. This table does not reflect the fees and expenses of any insurance company separate account or variable insurance contract issued by such insurance company. If they were reflected, fees would be higher.

Shareholder Fees Caption [Optional Text] oef_ShareholderFeesCaption Shareholder Fees (fees paid directly from your investment)
Operating Expenses Caption [Optional Text] oef_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a %    of the value of your investment)
Portfolio Turnover [Heading] oef_PortfolioTurnoverHeading Portfolio Turnover
Portfolio Turnover [Text Block] oef_PortfolioTurnoverTextBlock

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in the annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 12% of the average value of its portfolio.

Portfolio Turnover, Rate oef_PortfolioTurnoverRate 12.00%
Expense Example [Heading] oef_ExpenseExampleHeading Example
Expense Example Narrative [Text Block] oef_ExpenseExampleNarrativeTextBlock

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other 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 time periods. The example also assumes that your investment has a 5% return each year and that the fund’s operating expenses remain the same. The figures are based on total annual fund operating expenses (including AFFE) after any expense reduction. This example does not reflect the fees and expenses of any insurance company separate account or variable insurance contract issued by such insurance company. If they were reflected, costs would be higher. Your actual costs may be higher or lower.

Expense Example by, Year, Caption [Text] oef_ExpenseExampleByYearCaption Expenses on a $10,000 Investment
Strategy [Heading] oef_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] oef_StrategyNarrativeTextBlock

To pursue its goal, the fund aims to provide diversification across major asset classes, including domestic equity securities, international equity securities, real assets, fixed income securities and money market investments, as well as diversification across a range of sub-asset classes within the major asset classes. The fund gains exposure to these asset classes by primarily investing in affiliated exchange-traded funds (ETFs) from Schwab Funds (the Schwab ETFs). The fund may also invest in affiliated mutual funds from Schwab Funds and unaffiliated third-party ETFs and mutual funds (all such ETFs and mutual funds referred to as “underlying funds”). The fund will generally invest in a Schwab ETF that, in the investment adviser’s opinion, corresponds to a sub-asset class and is competitive with unaffiliated third-party ETFs.

The fund normally will invest, including its investments in the underlying funds, at least 25% of its assets in equity securities and at least 25% of its assets in fixed-income securities, which may include bonds, cash equivalents, money market funds and money market investments. The fund’s allocation is weighted toward equity securities (domestic and international) that seek capital growth. The term “growth” in the fund’s name refers to the fund’s weighting towards capital growth. As of the date of this prospectus, the fund’s target asset class allocation ranges are 25-50% in fixed-income securities and 50-75% in equity securities.

Each underlying fund may invest directly in equity, fixed income or other securities or investments, as appropriate, consistent with its investment objective, strategies and policies. Through its investments in underlying funds that invest in equity securities, the fund invests principally in large-cap stocks of U.S. and international developed-market countries, small-cap stocks of U.S. companies and stocks of emerging market countries. The fund also invests in underlying funds that invest in fixed-income investments, principally treasury bonds, corporate bonds and securitized bonds, which are primarily of investment grade. The fund’s investments in underlying funds that seek exposure to real assets include funds that invest in real estate investment trusts (REITs) and other companies related to the real estate industry. The fund may also invest in underlying funds that seek exposure to commodities. Finally, the fund may invest in money market investments, primarily through underlying funds that are money market funds.

The investment adviser has discretion to select the underlying fund investments and adjust the fund’s underlying fund allocations within a particular asset class based on the following considerations: market trends, its outlook for a given market capitalization and sub-asset class, and the underlying funds’ performance in various market conditions.

The fund intends to invest in a combination of underlying funds; however, the fund may invest directly in securities represented in the major asset classes noted above. The fund may invest in derivatives, primarily to seek returns on the fund’s otherwise uninvested cash assets. By using these instruments, the fund potentially can offset the impact on its performance of keeping some assets in cash.

For temporary defensive purposes during unusual economic or market conditions or for liquidity purposes, the fund may hold a significant amount of its assets in cash, money market instruments, repurchase agreements and other short-term obligations. When the fund engages in such activities, it may not achieve its investment objective.

The fund also may lend portfolio securities to earn additional income. Any income realized through securities lending may help fund performance.

Bar Chart and Performance Table [Heading] oef_BarChartAndPerformanceTableHeading Performance
Performance Narrative [Text Block] oef_PerformanceNarrativeTextBlock

The bar chart below shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compared to those of certain broad based indices and a composite index based on the fund’s target allocation. This information provides some indication of the risks of investing in the fund. All figures assume distributions were reinvested. The figures do not reflect the fees and expenses of any insurance company separate account or variable insurance contract issued by such insurance company. Such expenses, if included, would lower the figures shown. Keep in mind that future performance (both before and after taxes) may differ from past performance. For current performance information, please see www.schwabassetmanagement.com/prospectus.

Performance Information Illustrates Variability of Returns [Text] oef_PerformanceInformationIllustratesVariabilityOfReturns The bar chart below shows how the fund’s investment results have varied from year to year, and the following table shows how the fund’s average annual total returns for various periods compared to those of certain broad based indices and a composite index based on the fund’s target allocation.
Performance Availability Website Address [Text] oef_PerformanceAvailabilityWebSiteAddress www.schwabassetmanagement.com/prospectus
Performance Past Does Not Indicate Future [Text] oef_PerformancePastDoesNotIndicateFuture Keep in mind that future performance (both before and after taxes) may differ from past performance.
Bar Chart [Heading] oef_BarChartHeading Annual Total Returns (%) as of 12/31
Bar Chart Does Not Reflect Sales Loads [Text] oef_BarChartDoesNotReflectSalesLoads The figures do not reflect the fees and expenses of any insurance company separate account or variable insurance contract issued by such insurance company. Such expenses, if included, would lower the figures shown.
Bar Chart Closing [Text Block] oef_BarChartClosingTextBlock
 

Best Quarter: 12.74% Q2 2020

Worst Quarter: (15.49%) Q1 2020

Average Annual Return, Caption [Optional Text] oef_AverageAnnualReturnCaption Average Annual Total Returns as of 12/31/25
Schwab VIT Balanced with Growth Portfolio | Principal Risks  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock
Principal Risks

The fund is subject to risks, any of which could cause an investor to lose money. The fund’s principal risks include:

Schwab VIT Balanced with Growth Portfolio | Risk Lose Money [Member]  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock The fund is subject to risks, any of which could cause an investor to lose money.
Schwab VIT Balanced with Growth Portfolio | Asset Allocation Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Asset Allocation Risk — The fund is subject to the risk that the selection of the underlying funds and the allocation of the fund’s assets among the various asset classes and market segments may cause the fund to underperform other funds with a similar investment objective.

Schwab VIT Balanced with Growth Portfolio | Conflicts of Interest Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Conflicts of Interest Risk — The investment adviser’s authority to select and substitute underlying funds from a variety of affiliated and unaffiliated mutual funds and ETFs may create a conflict of interest because the fees paid to it and its affiliates by some underlying funds are higher than the fees paid by other underlying funds. The investment adviser also may have an incentive to select an affiliated underlying fund for other reasons, including to increase assets under management or to support new investment strategies. In addition, other conflicts of interest may exist where the best interests of the affiliated underlying fund may not be aligned with those of the fund. However, the investment adviser is a fiduciary to the fund and is legally obligated to act in the fund’s best interests when selecting underlying funds.

Schwab VIT Balanced with Growth Portfolio | Market Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Market Risk — Financial markets rise and fall in response to a variety of factors, sometimes rapidly and unpredictably. Markets may be impacted by economic, political, regulatory, and other conditions, including economic sanctions, tariffs, and other government actions. In addition, the occurrence of global events, such as war, terrorism, environmental disasters, natural disasters and epidemics, may also negatively affect the financial markets. As with any investment whose performance is tied to these markets, the value of an investment in the fund will fluctuate, which means that an investor could lose money over short or long periods.

Schwab VIT Balanced with Growth Portfolio | Securities Lending Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Securities Lending Risk — Securities lending involves the risk of loss of rights in, or delay in recovery of, the loaned securities if the borrower fails to return the security loaned or becomes insolvent.

• Securities Lending Risk — Certain underlying funds engage in securities lending, which involves the risk of loss of rights in, or delay in recovery of, the loaned securities if the borrower fails to return the security loaned or becomes insolvent.

Schwab VIT Balanced with Growth Portfolio | Exchange-Traded Fund (ETF) Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Exchange-Traded Fund (ETF) Risk — When the fund invests in an ETF, it will bear a proportionate share of the ETF’s expenses. In addition, lack of liquidity in the market for an ETF’s shares can result in its value being more volatile than the underlying portfolio of securities.

Schwab VIT Balanced with Growth Portfolio | Direct Investment Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Direct Investment Risk — The fund may invest directly in cash, cash equivalents and equity and fixed-income securities, including money market securities, to maintain its allocations. The fund’s direct investment in these securities is subject to the same or similar risks as an underlying fund’s investment in the same securities.

Schwab VIT Balanced with Growth Portfolio | Underlying Fund Investment Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

Underlying Fund Investment Risk — Before investing in the fund, investors should assess the risks associated with the underlying funds in which the fund may invest, which include any combination of the risks described below.

Schwab VIT Balanced with Growth Portfolio | Equity Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Equity Risk — The prices of equity securities rise and fall daily. These price movements may result from factors affecting individual companies, industries or the securities market as a whole. In addition, equity markets tend to move in cycles, which may cause stock prices to fall over short or extended periods of time.

Schwab VIT Balanced with Growth Portfolio | Market Capitalization Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Market Capitalization Risk — Securities issued by companies of different market capitalizations tend to go in and out of favor based on market and economic conditions. During a period when securities of a particular market capitalization fall behind other types of investments, an underlying fund’s performance could be impacted.

Schwab VIT Balanced with Growth Portfolio | Foreign Investment Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Foreign Investment Risk — An underlying fund’s investments in securities of foreign issuers involve certain risks that may be greater than those associated with investments in securities of U.S. issuers. These include risks of adverse changes in foreign economic, political, regulatory and other conditions; changes in currency exchange rates or exchange control regulations (including limitations on currency movements and exchanges); the imposition of economic sanctions or other government restrictions; differing accounting, auditing, financial reporting and legal standards and practices; differing securities market structures; and higher transaction costs. These risks may negatively impact the value or liquidity of an underlying fund’s investments, and could impair the underlying fund’s ability to meet its investment objective or invest in accordance with its investment strategy. There is a risk that investments in securities denominated in, and/or receiving revenues in, foreign currencies will decline in value relative to the U.S. dollar or, in the case of hedging positions, that the U.S. dollar will decline in

value relative to the currency hedged, resulting in the dollar value of an underlying fund’s investment being adversely affected.

Schwab VIT Balanced with Growth Portfolio | Emerging Markets Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Emerging Markets Risk — Emerging market countries may be more likely to experience political turmoil or rapid changes in market or economic conditions than more developed countries. Emerging market countries often have less uniformity in accounting, auditing, financial reporting and recordkeeping requirements, which may limit the quality and availability of financial information, and greater risk associated with the custody of securities. In addition, the financial stability of issuers (including governments) in emerging market countries may be more precarious than in developed countries. As a result, there may be an increased risk of illiquidity and price volatility associated with an underlying fund’s investments in emerging market countries, which may be magnified by currency fluctuations relative to the U.S. dollar, and, at times, it may be difficult to value such investments.

Schwab VIT Balanced with Growth Portfolio | Growth Investing Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Growth Investing Risk — Certain of the underlying funds pursue a “growth style” of investing. Growth investing focuses on a company’s prospects for growth of revenue and earnings. If a company’s earnings or revenues fall short of expectations, its stock price may fall dramatically. Growth stocks also can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks. Since growth companies usually invest a high portion of earnings in their business, they may lack the dividends of value stocks that can cushion stock prices in a falling market. Growth stocks may also be more expensive relative to their earnings or assets compared to value or other stocks.

Schwab VIT Balanced with Growth Portfolio | Value Investing Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Value Investing Risk — Certain of the underlying funds may pursue a “value style” of investing. Value investing focuses on companies whose stocks appear undervalued in light of factors such as the company’s earnings, book value, revenues or cash flow. If an underlying fund’s investment adviser’s (or sub-adviser’s) assessment of a company’s value or prospects for exceeding earnings expectations or market conditions is wrong, the underlying fund could suffer losses or produce poor performance relative to other funds. In addition, “value stocks” can continue to be undervalued by the market for long periods of time.

Schwab VIT Balanced with Growth Portfolio | Fixed-Income Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Fixed-Income Risk — Interest rates rise and fall over time, which will affect an underlying fund’s yield and share price. A change in a central bank’s monetary policy or economic conditions, among other things, may result in a change in interest rates. A rise in interest rates could cause an underlying fund’s share price to fall. The credit quality of a portfolio investment could also cause an underlying fund’s share price to fall. An underlying fund could lose money if the issuer or guarantor of a portfolio investment or the counterparty to a derivatives contract fails to make timely principal or interest payments or otherwise honor its obligations. Fixed-income securities may be paid off earlier or later than expected. Either situation could cause an underlying fund to hold securities paying lower-than-market rates of interest, which could hurt an underlying fund’s yield or share price. Below investment-grade bonds (junk bonds) involve greater credit risk, are more volatile, involve greater risk of price declines and may be more susceptible to economic downturns than investment-grade securities.

Schwab VIT Balanced with Growth Portfolio | Interest Rate Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Interest Rate Risk — Interest rates rise and fall over time. As with any investment whose yield reflects current interest rates, an underlying fund’s yield will change over time. During periods when interest rates are low, an underlying fund’s yield (and total return) also may be low. Changes in interest rates also may affect an underlying fund’s share price: a rise in interest rates generally causes an underlying fund’s share price to fall. The longer an underlying fund’s portfolio duration, the more sensitive to interest rate movements its share price is likely to be. Also, a change in a central bank’s monetary policy or economic conditions, among other things, may result in a change in interest rates, which could have sudden and unpredictable effects on the markets and significantly impact the value of fixed-income securities in which the underlying fund invests.

Schwab VIT Balanced with Growth Portfolio | Credit Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Credit Risk — A decline in the credit quality of an issuer or guarantor of a portfolio investment could cause an underlying fund to lose money or underperform. An underlying fund could lose money if, due to a decline in credit quality, the issuer or guarantor of a portfolio investment fails to make, or is perceived as being unable or unwilling to make, timely principal or interest payments or otherwise honor its obligations.

Schwab VIT Balanced with Growth Portfolio | Prepayment and Extension Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Prepayment and Extension Risk — Certain fixed income securities are subject to the risk that the securities may be paid off earlier or later than expected, especially during periods of falling or rising interest rates, respectively. Prepayments of obligations could cause an underlying fund to forgo future interest income on the portion of the security’s principal repaid early and force the underlying fund to reinvest that money at the lower prevailing interest rates. Extensions of obligations could cause the fund to exhibit additional volatility and hold securities paying lower-than-market rates of interest. Either case could hurt the underlying fund’s performance.

Schwab VIT Balanced with Growth Portfolio | U.S. Government Securities Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• U.S. Government Securities Risk — Some of the U.S. government securities that the underlying funds invest in are not backed by the full faith and credit of the U.S. government, which means they are neither issued nor guaranteed by the U.S. Treasury. Issuers such as the Federal Home Loan Banks (FHLB) maintain limited access to credit lines from the U.S. Treasury. Certain securities, such as obligations issued by the Federal Farm Credit Banks Funding Corporation, are supported solely by the credit of the issuer. There can be no assurance that the U.S. government will provide financial support to securities of its agencies and instrumentalities if it is not obligated to do so under law. Also, any government guarantees on securities the underlying funds own do not extend to shares of the underlying funds themselves.

Schwab VIT Balanced with Growth Portfolio | Real Estate Investment Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Real Estate Investment Risk — An underlying fund in which the fund may invest may have a policy of concentrating its

investments in real estate companies and companies related to the real estate industry. As such, an underlying fund is subject to risks associated with the direct ownership of real estate securities and the fund’s investment in such an underlying fund is subject to risks associated with the direct ownership of real estate securities and an investment in the underlying fund will be closely linked to the performance of the real estate markets. These risks include, among others, declines in the value of real estate; risks related to general and local economic conditions; possible lack of availability of mortgage funds or other limits to accessing the credit or capital markets; defaults by borrowers or tenants, particularly during an economic downturn; and changes in interest rates.

Schwab VIT Balanced with Growth Portfolio | Real Estate Investment Trusts (REITs) Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Real Estate Investment Trusts (REITs) Risk — An underlying fund may invest in REITs. An underlying fund’s investments in REITs will be subject to the risks associated with the direct ownership of real estate, including fluctuations in the value of underlying properties, defaults by borrowers or tenants, changes in interest rates and risks related to general or local economic conditions. REITs are also subject to certain additional risks. For example, equity REITs may be affected by changes in the value of the underlying properties owned by the trusts, and mortgage REITs may be affected by the quality of any credit extended. Further, REITs may have their investments in relatively few properties, a small geographic area or a single property type. In addition, REITs have their own expenses, and the underlying fund will bear a proportionate share of those expenses.

Schwab VIT Balanced with Growth Portfolio | Mortgage-Backed and Mortgage Pass-Through Securities Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Mortgage-Backed and Mortgage Pass-Through Securities Risk — Mortgage-backed securities tend to increase in value less than other debt securities when interest rates decline, but are subject to similar or greater risk of decline in market value during periods of rising interest rates. Certain of the mortgage-backed securities in which an underlying fund may invest are issued or guaranteed by agencies or instrumentalities of the U.S. government but are not backed by the full faith and credit of the U.S. government. There can be no assurance that the U.S. government would provide financial support to its agencies or instrumentalities where it was not obligated to do so which can cause an underlying fund to lose money or underperform. The risks of investing in mortgage-backed securities include, among others, interest rate risk, credit risk, prepayment risk and extension risk. Transactions in mortgage pass-through securities often occur through to-be-announced (TBA) transactions. An underlying fund could lose money or underperform if a TBA counterparty defaults or goes bankrupt.

Schwab VIT Balanced with Growth Portfolio | Portfolio Turnover Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Portfolio Turnover Risk — Certain of the underlying funds may buy and sell portfolio securities actively. If they do, their portfolio turnover rate and transaction costs will rise, which may lower the underlying fund’s performance and may increase the likelihood of capital gains distributions.

Schwab VIT Balanced with Growth Portfolio | Liquidity Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Liquidity Risk — An underlying fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the underlying fund may have to sell them at a loss.

Schwab VIT Balanced with Growth Portfolio | Derivatives Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Derivatives Risk — An underlying fund’s use of derivative instruments involves risks different from, or possibly greater than, the risks associated with investing directly in securities and other traditional investments. An underlying fund’s use of derivatives could reduce the underlying fund’s performance, increase its volatility and cause the underlying fund to lose more than the initial amount invested. In addition, investments in derivatives may involve leverage, which means a small percentage of assets invested in derivatives can have a disproportionately large impact on an underlying fund.

Schwab VIT Balanced with Growth Portfolio | Management Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Management Risk — An underlying fund may be an actively managed mutual fund. Any actively managed mutual fund is subject to the risk that its investment adviser (or sub-adviser(s)) will make poor security selections. An underlying fund’s adviser applies its own investment techniques and risk analyses in making investment decisions for the underlying fund, but there can be no guarantee that they will produce the desired results.

Schwab VIT Balanced with Growth Portfolio | Investment Style Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Investment Style Risk — Certain underlying funds seek to track the performance of various segments of the stock market, as measured by their respective indices. Such underlying funds follow these stocks during upturns as well as downturns. Because of their indexing strategy, these underlying funds do not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of an underlying fund’s expenses, the underlying fund’s performance is normally below that of the index. Errors relating to an index may occur from time to time and may not be identified by the underlying fund’s index provider for a period of time. In addition, market disruptions could cause delays in an underlying fund’s index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for an underlying fund.

Schwab VIT Balanced with Growth Portfolio | Tracking Error and Correlation Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Tracking Error and Correlation Risk — An underlying fund may seek to track the performance of its benchmark index, although it may not be successful in doing so. Further, there can be no guarantee that the underlying fund will achieve a high degree of correlation between the underlying fund’s performance and that of its index. The correlation between the performance of an underlying fund and that of its benchmark index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.

Schwab VIT Balanced with Growth Portfolio | Concentration Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Concentration Risk — To the extent that an underlying fund’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector or asset class, the underlying fund may be adversely affected by the performance of those securities, may be subject to increased price volatility and may be more vulnerable to adverse economic, market, political or regulatory occurrences affecting that market, industry, group of industries, sector or asset class.

Schwab VIT Balanced with Growth Portfolio | Commodity Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Commodity Risk — To the extent that an underlying fund invests in commodity-linked derivative instruments, it may subject the underlying fund to greater volatility than investments in traditional securities. Also, commodity-linked investments may be more volatile and less liquid than the underlying commodity. The value of commodity-linked derivative instruments may be affected by changes in overall market movements, commodity index volatility, changes in interest rates, or factors affecting a particular industry or commodity, such as drought, floods, weather, livestock disease, embargoes, tariffs and international economic, political and other regulatory and market developments. The use of leveraged commodity-linked derivatives creates an opportunity for increased return, but also creates the possibility for a greater loss.

Schwab VIT Balanced with Growth Portfolio | Money Market Fund Risk  
Risk/Return: oef_RiskReturnAbstract  
Risk [Text Block] oef_RiskTextBlock

• Money Market Fund Risk — The fund may invest in underlying money market funds that seek to maintain a stable $1.00 net asset value. Although an underlying money market fund seeks to maintain a stable $1.00 net asset value, it is possible to lose money by investing in such a money market fund. In addition, money market funds are not designed to offer capital appreciation. Certain underlying money market funds may impose a fee upon the sale of shares under certain circumstances.

Schwab VIT Balanced with Growth Portfolio | S&P 500® Index  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel S&P 500® Index
Average Annual Return, Percent oef_AvgAnnlRtrPct 17.88%
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.42%
Average Annual Return, Percent oef_AvgAnnlRtrPct 14.82%
Schwab VIT Balanced with Growth Portfolio | Bloomberg US Aggregate Bond Index  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel Bloomberg US Aggregate Bond Index
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.30%
Average Annual Return, Percent oef_AvgAnnlRtrPct (0.36%)
Average Annual Return, Percent oef_AvgAnnlRtrPct 2.01%
Schwab VIT Balanced with Growth Portfolio | VIT Balanced with Growth Composite Index(1)  
Risk/Return: oef_RiskReturnAbstract  
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel VIT Balanced with Growth Composite Index(1)
Average Annual Return, Percent oef_AvgAnnlRtrPct 16.09% [1]
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.01% [1]
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.79% [1]
Schwab VIT Balanced with Growth Portfolio | Schwab VIT Balanced with Growth Portfolio  
Risk/Return: oef_RiskReturnAbstract  
Shareholder Fee, Other oef_ShareholderFeeOther $ 0
Management Fees (as a percentage of Assets) oef_ManagementFeesOverAssets 0.45%
Distribution and Service (12b-1) Fees oef_DistributionAndService12b1FeesOverAssets 0.00%
Other Expenses (as a percentage of Assets): oef_OtherExpensesOverAssets 0.03%
Acquired Fund Fees and Expenses oef_AcquiredFundFeesAndExpensesOverAssets 0.05% [2]
Expense Example, with Redemption, 1 Year oef_ExpenseExampleYear01 $ 54
Expense Example, with Redemption, 3 Years oef_ExpenseExampleYear03 170
Expense Example, with Redemption, 5 Years oef_ExpenseExampleYear05 296
Expense Example, with Redemption, 10 Years oef_ExpenseExampleYear10 $ 665
Highest Quarterly Return, Label [Optional Text] oef_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date oef_BarChartHighestQuarterlyReturnDate Jun. 30, 2020
Highest Quarterly Return oef_BarChartHighestQuarterlyReturn 12.74%
Lowest Quarterly Return, Label [Optional Text] oef_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date oef_BarChartLowestQuarterlyReturnDate Mar. 31, 2020
Lowest Quarterly Return oef_BarChartLowestQuarterlyReturn (15.49%)
Index No Deduction for Fees, Expenses, or Taxes [Text] oef_IndexNoDeductionForFeesExpensesTaxes reflects nodeduction for fees, expenses, or taxes
Average Annual Return, Label [Optional Text] oef_AverageAnnualReturnLabel VIT Balanced with Growth Portfolio
Average Annual Return, Percent oef_AvgAnnlRtrPct 15.60%
Average Annual Return, Percent oef_AvgAnnlRtrPct 6.45%
Average Annual Return, Percent oef_AvgAnnlRtrPct 7.20%
Annual Return [Percent] oef_AnnlRtrPct 6.38%
Annual Return [Percent] oef_AnnlRtrPct 13.70%
Annual Return [Percent] oef_AnnlRtrPct (6.70%)
Annual Return [Percent] oef_AnnlRtrPct 18.05%
Annual Return [Percent] oef_AnnlRtrPct 10.09%
Annual Return [Percent] oef_AnnlRtrPct 11.42%
Annual Return [Percent] oef_AnnlRtrPct (16.00%)
Annual Return [Percent] oef_AnnlRtrPct 14.85%
Annual Return [Percent] oef_AnnlRtrPct 9.97958%
Annual Return [Percent] oef_AnnlRtrPct 15.59607%
[1]

The VIT Balanced with Growth Composite Index is a custom blended index developed by Schwab Asset Management based on a comparable portfolio asset allocation and calculated using the following portion allocations effective April 28, 2023: 26.1% Bloomberg US Aggregate Bond Index, 3.9% Bloomberg US Treasury 1-3 Year Index, 4.0% Bloomberg US Treasury Bills 1-3 Month Index, 1.0% Bloomberg US Treasury Inflation-Linked Bond Index (Series-L), 4.6% Dow Jones Equity All REIT Capped Index, 34.0% Dow Jones U.S. Large Cap Total Stock Market Index, 4.2% Dow Jones U.S. Small Cap Total Stock Market Index, 3.2% FTSE All Emerging Index (Net), 16.0% FTSE Developed ex-U.S. Index (Net), and 3.0% FTSE Developed Small Cap ex-U.S. Liquid Index (Net). Prior to April 28, 2023, the index had a different composition. See “Additional Information About the Funds’ Composite Indices” for additional detail.

[2]

AFFE reflect fees and expenses incurred indirectly by the fund through its investments in the underlying funds. The total annual fund operating expenses in the fee table may differ from the expense ratios in the fund’s “Financial Highlights” that include only the fund’s direct operating expenses and not AFFE.