Investment Risks	Feb. 29, 2024
Schwab Fundamental U.S. Broad Market Index ETF | Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The fund is subject to risks, any of which could cause an investor to lose money.
Schwab Fundamental U.S. Broad Market Index ETF | Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 Fundamental U.S. Broad Market Index ETF | Investment Style Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Investment Style Risk. The fund is an index fund. Therefore, the fund follows the securities included in the index during upturns as well as downturns. Because of its indexing strategy, the fund does not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of the fund’s expenses, the fund’s performance may be below that of the index. Errors relating to the index may occur from time to time and may not be identified by the index provider for a period of time. In addition, market disruptions could cause delays in the index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for the fund.
Schwab Fundamental U.S. Broad Market Index ETF | New Index Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	New Index Risk. The fund’s comparative index was recently constituted and has not previously been utilized for a registered fund, which may create additional risks for investing in the fund.
Schwab Fundamental U.S. Broad Market Index ETF | Equity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 Fundamental U.S. Broad Market Index ETF | Market Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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, the fund’s performance could be impacted.
Schwab Fundamental U.S. Broad Market Index ETF | Large-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-Cap Company Risk. Large-cap companies are generally more mature and the securities issued by these companies may not be able to reach the same levels of growth as the securities issued by small- or mid-cap companies.
Schwab Fundamental U.S. Broad Market Index ETF | Mid-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Mid-Cap Company Risk. Mid-cap companies may be more vulnerable to adverse business or economic events than larger, more established companies and the value of securities issued by these companies may move sharply.
Schwab Fundamental U.S. Broad Market Index ETF | Small-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Small-Cap Company Risk. Securities issued by small-cap companies may be riskier than those issued by larger companies, and their prices may move sharply, especially during market upturns and downturns.
Schwab Fundamental U.S. Broad Market Index ETF | Sampling Index Tracking Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Sampling Index Tracking Risk. The fund may not fully replicate the index and may hold securities not included in the index. As a result, the fund is subject to the risk that the investment adviser’s investment management strategy, the implementation of which is subject to a number of constraints, may not produce the intended results. Because the fund utilizes a sampling approach it may not track the return of the index as well as it would if the fund purchased all of the securities in the index.
Schwab Fundamental U.S. Broad Market Index ETF | Tracking Error Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Tracking Error Risk. As an index fund, the fund seeks to track the performance of the index, although it may not be successful in doing so. The divergence between the performance of the fund and the index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.
Schwab Fundamental U.S. Broad Market Index ETF | Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives Risk. The 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. The fund’s use of derivatives could reduce the fund’s performance, increase its volatility and cause the 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 the fund.
Schwab Fundamental U.S. Broad Market Index ETF | Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. The fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the fund may have to sell them at a loss.
Schwab Fundamental U.S. Broad Market Index ETF | Securities Lending Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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.
Schwab Fundamental U.S. Broad Market Index ETF | Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Concentration Risk. To the extent that the fund’s or the index’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector or asset class, the 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 Fundamental U.S. Broad Market Index ETF | Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. Although fund shares are listed on national securities exchanges, there can be no assurance that an active trading market for fund shares will develop or be maintained. If an active market is not maintained, investors may find it difficult to buy or sell fund shares.
Schwab Fundamental U.S. Broad Market Index ETF | Shares of the Fund May Trade at Prices Other Than NAV [Member]
Prospectus [Line Items]
Risk [Text Block]	Shares of the Fund May Trade at Prices Other Than NAV. Fund shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of the shares of the fund will approximate the fund’s net asset value (NAV), there may be times when the market price and the NAV vary significantly. An investor may pay more than NAV when buying shares of the fund in the secondary market, and an investor may receive less than NAV when selling those shares in the secondary market. The market price of fund shares may deviate, sometimes significantly, from NAV during periods of market volatility or market disruption.
Schwab Fundamental U.S. Large Company Index ETF | Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The fund is subject to risks, any of which could cause an investor to lose money.
Schwab Fundamental U.S. Large Company Index ETF | Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 Fundamental U.S. Large Company Index ETF | Investment Style Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Investment Style Risk. The fund is an index fund. Therefore, the fund follows the securities included in the index during upturns as well as downturns. Because of its indexing strategy, the fund does not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of the fund’s expenses, the fund’s performance may be below that of the index. Errors relating to the index may occur from time to time and may not be identified by the index provider for a period of time. In addition, market disruptions could cause delays in the index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for the fund.
Schwab Fundamental U.S. Large Company Index ETF | New Index Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	New Index Risk. The fund’s comparative index was recently constituted and has not previously been utilized for a registered fund, which may create additional risks for investing in the fund.
Schwab Fundamental U.S. Large Company Index ETF | Equity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 Fundamental U.S. Large Company Index ETF | Market Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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, the fund’s performance could be impacted.
Schwab Fundamental U.S. Large Company Index ETF | Large-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-Cap Company Risk. Large-cap companies are generally more mature and the securities issued by these companies may not be able to reach the same levels of growth as the securities issued by small- or mid-cap companies.
Schwab Fundamental U.S. Large Company Index ETF | Tracking Error Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Tracking Error Risk. As an index fund, the fund seeks to track the performance of the index, although it may not be successful in doing so. The divergence between the performance of the fund and the index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.
Schwab Fundamental U.S. Large Company Index ETF | Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives Risk. The 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. The fund’s use of derivatives could reduce the fund’s performance, increase its volatility and cause the 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 the fund.
Schwab Fundamental U.S. Large Company Index ETF | Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. The fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the fund may have to sell them at a loss.
Schwab Fundamental U.S. Large Company Index ETF | Securities Lending Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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.
Schwab Fundamental U.S. Large Company Index ETF | Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Concentration Risk. To the extent that the fund’s or the index’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector or asset class, the 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 Fundamental U.S. Large Company Index ETF | Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. Although fund shares are listed on national securities exchanges, there can be no assurance that an active trading market for fund shares will develop or be maintained. If an active market is not maintained, investors may find it difficult to buy or sell fund shares.
Schwab Fundamental U.S. Large Company Index ETF | Shares of the Fund May Trade at Prices Other Than NAV [Member]
Prospectus [Line Items]
Risk [Text Block]	Shares of the Fund May Trade at Prices Other Than NAV. Fund shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of the shares of the fund will approximate the fund’s net asset value (NAV), there may be times when the market price and the NAV vary significantly. An investor may pay more than NAV when buying shares of the fund in the secondary market, and an investor may receive less than NAV when selling those shares in the secondary market. The market price of fund shares may deviate, sometimes significantly, from NAV during periods of market volatility or market disruption.
Schwab Fundamental U.S. Small Company Index ETF | Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The fund is subject to risks, any of which could cause an investor to lose money.
Schwab Fundamental U.S. Small Company Index ETF | Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 Fundamental U.S. Small Company Index ETF | Investment Style Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Investment Style Risk. The fund is an index fund. Therefore, the fund follows the securities included in the index during upturns as well as downturns. Because of its indexing strategy, the fund does not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of the fund’s expenses, the fund’s performance may be below that of the index. Errors relating to the index may occur from time to time and may not be identified by the index provider for a period of time. In addition, market disruptions could cause delays in the index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for the fund.
Schwab Fundamental U.S. Small Company Index ETF | New Index Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	New Index Risk. The fund’s comparative index was recently constituted and has not previously been utilized for a registered fund, which may create additional risks for investing in the fund.
Schwab Fundamental U.S. Small Company Index ETF | Equity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 Fundamental U.S. Small Company Index ETF | Market Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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, the fund’s performance could be impacted.
Schwab Fundamental U.S. Small Company Index ETF | Small-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Small-Cap Company Risk. Securities issued by small-cap companies may be riskier than those issued by larger companies, and their prices may move sharply, especially during market upturns and downturns.
Schwab Fundamental U.S. Small Company Index ETF | Tracking Error Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Tracking Error Risk. As an index fund, the fund seeks to track the performance of the index, although it may not be successful in doing so. The divergence between the performance of the fund and the index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.
Schwab Fundamental U.S. Small Company Index ETF | Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives Risk. The 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. The fund’s use of derivatives could reduce the fund’s performance, increase its volatility and cause the 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 the fund.
Schwab Fundamental U.S. Small Company Index ETF | Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. The fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the fund may have to sell them at a loss.
Schwab Fundamental U.S. Small Company Index ETF | Securities Lending Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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.
Schwab Fundamental U.S. Small Company Index ETF | Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Concentration Risk. To the extent that the fund’s or the index’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector or asset class, the 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 Fundamental U.S. Small Company Index ETF | Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. Although fund shares are listed on national securities exchanges, there can be no assurance that an active trading market for fund shares will develop or be maintained. If an active market is not maintained, investors may find it difficult to buy or sell fund shares.
Schwab Fundamental U.S. Small Company Index ETF | Shares of the Fund May Trade at Prices Other Than NAV [Member]
Prospectus [Line Items]
Risk [Text Block]	Shares of the Fund May Trade at Prices Other Than NAV. Fund shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of the shares of the fund will approximate the fund’s net asset value (NAV), there may be times when the market price and the NAV vary significantly. An investor may pay more than NAV when buying shares of the fund in the secondary market, and an investor may receive less than NAV when selling those shares in the secondary market. The market price of fund shares may deviate, sometimes significantly, from NAV during periods of market volatility or market disruption.
Schwab Fundamental International Large Company Index ETF | Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The fund is subject to risks, any of which could cause an investor to lose money.
Schwab Fundamental International Large Company Index ETF | Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 Fundamental International Large Company Index ETF | Investment Style Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Investment Style Risk. The fund is an index fund. Therefore, the fund follows the securities included in the index during upturns as well as downturns. Because of its indexing strategy, the fund does not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of the fund’s expenses, the fund’s performance may be below that of the index. Errors relating to the index may occur from time to time and may not be identified by the index provider for a period of time. In addition, market disruptions could cause delays in the index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for the fund.
Schwab Fundamental International Large Company Index ETF | New Index Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	New Index Risk. The fund’s comparative index was recently constituted and has not previously been utilized for a registered fund, which may create additional risks for investing in the fund.
Schwab Fundamental International Large Company Index ETF | Equity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 Fundamental International Large Company Index ETF | Market Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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, the fund’s performance could be impacted.
Schwab Fundamental International Large Company Index ETF | Large-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-Cap Company Risk. Large-cap companies are generally more mature and the securities issued by these companies may not be able to reach the same levels of growth as the securities issued by small- or mid-cap companies.
Schwab Fundamental International Large Company Index ETF | Sampling Index Tracking Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Sampling Index Tracking Risk. The fund may not fully replicate the index and may hold securities not included in the index. As a result, the fund is subject to the risk that the investment adviser’s investment management strategy, the implementation of which is subject to a number of constraints, may not produce the intended results. Because the fund utilizes a sampling approach it may not track the return of the index as well as it would if the fund purchased all of the securities in the index.
Schwab Fundamental International Large Company Index ETF | Tracking Error Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Tracking Error Risk. As an index fund, the fund seeks to track the performance of the index, although it may not be successful in doing so. The divergence between the performance of the fund and the index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.
Schwab Fundamental International Large Company Index ETF | Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives Risk. The 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. The fund’s use of derivatives could reduce the fund’s performance, increase its volatility and cause the 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 the fund.
Schwab Fundamental International Large Company Index ETF | Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. The fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the fund may have to sell them at a loss.
Schwab Fundamental International Large Company Index ETF | Securities Lending Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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.
Schwab Fundamental International Large Company Index ETF | Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Concentration Risk. To the extent that the fund’s or the index’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector, country or asset class, the 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, country or asset class.
Schwab Fundamental International Large Company Index ETF | Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. Although fund shares are listed on national securities exchanges, there can be no assurance that an active trading market for fund shares will develop or be maintained. If an active market is not maintained, investors may find it difficult to buy or sell fund shares.
Schwab Fundamental International Large Company Index ETF | Shares of the Fund May Trade at Prices Other Than NAV [Member]
Prospectus [Line Items]
Risk [Text Block]	Shares of the Fund May Trade at Prices Other Than NAV. Fund shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of the shares of the fund will approximate the fund’s net asset value (NAV), there may be times when the market price and the NAV vary significantly. An investor may pay more than NAV when buying shares of the fund in the secondary market, and an investor may receive less than NAV when selling those shares in the secondary market. The market price of fund shares may deviate, sometimes significantly, from NAV during periods of market volatility or market disruption, or as a result of other factors impacting foreign securities, including liquidity, irregular trading activity and timing differences between foreign markets where securities trade and the secondary market where fund shares are sold.
Schwab Fundamental International Large Company Index ETF | Foreign Investment Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign Investment Risk. The 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 the fund’s investments, and could impair the 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. Foreign securities also include ADRs, GDRs and EDRs, which may be less liquid than the underlying shares in their primary trading market, and GDRs, in particular, many of which are issued by companies in emerging markets, may be more volatile. To the extent the fund’s investments in a single country or a limited number of countries represent a large percentage of the fund’s assets, the fund’s performance may be adversely affected by the economic, political, regulatory and social conditions in those countries, and the fund’s price may be more volatile than the price of a fund that is geographically diversified.
Schwab Fundamental International Small Company Index ETF | Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The fund is subject to risks, any of which could cause an investor to lose money.
Schwab Fundamental International Small Company Index ETF | Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 Fundamental International Small Company Index ETF | Investment Style Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Investment Style Risk. The fund is an index fund. Therefore, the fund follows the securities included in the index during upturns as well as downturns. Because of its indexing strategy, the fund does not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of the fund’s expenses, the fund’s performance may be below that of the index. Errors relating to the index may occur from time to time and may not be identified by the index provider for a period of time. In addition, market disruptions could cause delays in the index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for the fund.
Schwab Fundamental International Small Company Index ETF | New Index Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	New Index Risk. The fund’s comparative index was recently constituted and has not previously been utilized for a registered fund, which may create additional risks for investing in the fund.
Schwab Fundamental International Small Company Index ETF | Equity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 Fundamental International Small Company Index ETF | Market Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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, the fund’s performance could be impacted.
Schwab Fundamental International Small Company Index ETF | Small-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Small-Cap Company Risk. Securities issued by small-cap companies may be riskier than those issued by larger companies, and their prices may move sharply, especially during market upturns and downturns.
Schwab Fundamental International Small Company Index ETF | Sampling Index Tracking Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Sampling Index Tracking Risk. The fund may not fully replicate the index and may hold securities not included in the index. As a result, the fund is subject to the risk that the investment adviser’s investment management strategy, the implementation of which is subject to a number of constraints, may not produce the intended results. Because the fund utilizes a sampling approach it may not track the return of the index as well as it would if the fund purchased all of the securities in the index.
Schwab Fundamental International Small Company Index ETF | Tracking Error Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Tracking Error Risk. As an index fund, the fund seeks to track the performance of the index, although it may not be successful in doing so. The divergence between the performance of the fund and the index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.
Schwab Fundamental International Small Company Index ETF | Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives Risk. The 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. The fund’s use of derivatives could reduce the fund’s performance, increase its volatility and cause the 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 the fund.
Schwab Fundamental International Small Company Index ETF | Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. The fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the fund may have to sell them at a loss.
Schwab Fundamental International Small Company Index ETF | Securities Lending Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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.
Schwab Fundamental International Small Company Index ETF | Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Concentration Risk. To the extent that the fund’s or the index’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector, country or asset class, the 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, country or asset class.
Schwab Fundamental International Small Company Index ETF | Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. Although fund shares are listed on national securities exchanges, there can be no assurance that an active trading market for fund shares will develop or be maintained. If an active market is not maintained, investors may find it difficult to buy or sell fund shares.
Schwab Fundamental International Small Company Index ETF | Shares of the Fund May Trade at Prices Other Than NAV [Member]
Prospectus [Line Items]
Risk [Text Block]	Shares of the Fund May Trade at Prices Other Than NAV. Fund shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of the shares of the fund will approximate the fund’s net asset value (NAV), there may be times when the market price and the NAV vary significantly. An investor may pay more than NAV when buying shares of the fund in the secondary market, and an investor may receive less than NAV when selling those shares in the secondary market. The market price of fund shares may deviate, sometimes significantly, from NAV during periods of market volatility or market disruption, or as a result of other factors impacting foreign securities, including liquidity, irregular trading activity and timing differences between foreign markets where securities trade and the secondary market where fund shares are sold.
Schwab Fundamental International Small Company Index ETF | Foreign Investment Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign Investment Risk. The 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 the fund’s investments, and could impair the 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. Foreign securities also include ADRs, GDRs and EDRs, which may be less liquid than the underlying shares in their primary trading market, and GDRs, in particular, many of which are issued by companies in emerging markets, may be more volatile. To the extent the fund’s investments in a single country or a limited number of countries represent a large percentage of the fund’s assets, the fund’s performance may be adversely affected by the economic, political, regulatory and social conditions in those countries, and the fund’s price may be more volatile than the price of a fund that is geographically diversified.
Schwab Fundamental Emerging Markets Large Company Index ETF | Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The fund is subject to risks, any of which could cause an investor to lose money.
Schwab Fundamental Emerging Markets Large Company Index ETF | Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 Fundamental Emerging Markets Large Company Index ETF | Investment Style Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Investment Style Risk. The fund is an index fund. Therefore, the fund follows the securities included in the index during upturns as well as downturns. Because of its indexing strategy, the fund does not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of the fund’s expenses, the fund’s performance may be below that of the index. Errors relating to the index may occur from time to time and may not be identified by the index provider for a period of time. In addition, market disruptions could cause delays in the index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for the fund.
Schwab Fundamental Emerging Markets Large Company Index ETF | New Index Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	New Index Risk. The fund’s comparative index was recently constituted and has not previously been utilized for a registered fund, which may create additional risks for investing in the fund.
Schwab Fundamental Emerging Markets Large Company Index ETF | Equity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 Fundamental Emerging Markets Large Company Index ETF | Market Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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, the fund’s performance could be impacted.
Schwab Fundamental Emerging Markets Large Company Index ETF | Large-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-Cap Company Risk. Large-cap companies are generally more mature and the securities issued by these companies may not be able to reach the same levels of growth as the securities issued by small- or mid-cap companies.
Schwab Fundamental Emerging Markets Large Company Index ETF | Sampling Index Tracking Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Sampling Index Tracking Risk. The fund may not fully replicate the index and may hold securities not included in the index. As a result, the fund is subject to the risk that the investment adviser’s investment management strategy, the implementation of which is subject to a number of constraints, may not produce the intended results. Because the fund utilizes a sampling approach it may not track the return of the index as well as it would if the fund purchased all of the securities in the index.
Schwab Fundamental Emerging Markets Large Company Index ETF | Tracking Error Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Tracking Error Risk. As an index fund, the fund seeks to track the performance of the index, although it may not be successful in doing so. The divergence between the performance of the fund and the index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.
Schwab Fundamental Emerging Markets Large Company Index ETF | Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives Risk. The 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. The fund’s use of derivatives could reduce the fund’s performance, increase its volatility and cause the 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 the fund.
Schwab Fundamental Emerging Markets Large Company Index ETF | Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. The fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the fund may have to sell them at a loss.
Schwab Fundamental Emerging Markets Large Company Index ETF | Securities Lending Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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.
Schwab Fundamental Emerging Markets Large Company Index ETF | Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Concentration Risk. To the extent that the fund’s or the index’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector, country or asset class, the 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, country or asset class.
Schwab Fundamental Emerging Markets Large Company Index ETF | Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. Although fund shares are listed on national securities exchanges, there can be no assurance that an active trading market for fund shares will develop or be maintained. If an active market is not maintained, investors may find it difficult to buy or sell fund shares.
Schwab Fundamental Emerging Markets Large Company Index ETF | Shares of the Fund May Trade at Prices Other Than NAV [Member]
Prospectus [Line Items]
Risk [Text Block]	Shares of the Fund May Trade at Prices Other Than NAV. Fund shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of the shares of the fund will approximate the fund’s net asset value (NAV), there may be times when the market price and the NAV vary significantly. An investor may pay more than NAV when buying shares of the fund in the secondary market, and an investor may receive less than NAV when selling those shares in the secondary market. The market price of fund shares may deviate, sometimes significantly, from NAV during periods of market volatility or market disruption, or as a result of other factors impacting foreign securities, including liquidity, irregular trading activity and timing differences between foreign markets where securities trade and the secondary market where fund shares are sold.
Schwab Fundamental Emerging Markets Large Company Index ETF | Foreign Investment Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Foreign Investment Risk. The 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 the fund’s investments and could impair the 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. Foreign securities also include ADRs, GDRs and EDRs, which may be less liquid than the underlying shares in their primary trading market, and GDRs, in particular, many of which are issued by companies in emerging markets, may be more volatile. Foreign securities may also include investments in variable interest entities (VIEs) structures, which are created by China-based operating companies in jurisdictions outside of China to obtain indirect financing due to Chinese regulations that prohibit non-Chinese ownership of those companies. To the extent the fund’s investments in a single country or a limited number of countries represent a large percentage of the fund’s assets, the fund’s performance may be adversely affected by the economic, political, regulatory and social conditions in those countries, and the fund’s price may be more volatile than the price of a fund that is geographically diversified.
Schwab Fundamental Emerging Markets Large Company Index ETF | Emerging Markets Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 the 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 U.S. REIT ETF | Risk Lose Money [Member]
Prospectus [Line Items]
Risk [Text Block]	The fund is subject to risks, any of which could cause an investor to lose money.
Schwab U.S. REIT ETF | Market Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 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 U.S. REIT ETF | Investment Style Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Investment Style Risk. The fund is an index fund. Therefore, the fund follows the securities included in the index during upturns as well as downturns. Because of its indexing strategy, the fund does not take steps to reduce market exposure or to lessen the effects of a declining market. In addition, because of the fund’s expenses, the fund’s performance may be below that of the index. Errors relating to the index may occur from time to time and may not be identified by the index provider for a period of time. In addition, market disruptions could cause delays in the index’s rebalancing schedule. Such errors and/or market disruptions may result in losses for the fund.
Schwab U.S. REIT ETF | Equity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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 U.S. REIT ETF | Market Capitalization Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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, the fund’s performance could be impacted.
Schwab U.S. REIT ETF | Large-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Large-Cap Company Risk. Large-cap companies are generally more mature and the securities issued by these companies may not be able to reach the same levels of growth as the securities issued by small- or mid-cap companies.
Schwab U.S. REIT ETF | Mid-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Mid-Cap Company Risk. Mid-cap companies may be more vulnerable to adverse business or economic events than larger, more established companies and the value of securities issued by these companies may move sharply.
Schwab U.S. REIT ETF | Small-Cap Company Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Small-Cap Company Risk. Securities issued by small-cap companies may be riskier than those issued by larger companies, and their prices may move sharply, especially during market upturns and downturns.
Schwab U.S. REIT ETF | Tracking Error Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Tracking Error Risk. As an index fund, the fund seeks to track the performance of its index, although it may not be successful in doing so. The divergence between the performance of the fund and the index, positive or negative, is called “tracking error.” Tracking error can be caused by many factors and it may be significant.
Schwab U.S. REIT ETF | Derivatives Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Derivatives Risk. The 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. The fund’s use of derivatives could reduce the fund’s performance, increase its volatility and cause the 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 the fund.
Schwab U.S. REIT ETF | Liquidity Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Liquidity Risk. The fund may be unable to sell certain securities, such as illiquid securities, readily at a favorable time or price, or the fund may have to sell them at a loss.
Schwab U.S. REIT ETF | Securities Lending Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	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.
Schwab U.S. REIT ETF | Concentration Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Concentration Risk. To the extent that the fund’s or the index’s portfolio is concentrated in the securities of issuers in a particular market, industry, group of industries, sector or asset class (including the real estate industry, as described above), the 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 U.S. REIT ETF | Market Trading Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Market Trading Risk. Although fund shares are listed on national securities exchanges, there can be no assurance that an active trading market for fund shares will develop or be maintained. If an active market is not maintained, investors may find it difficult to buy or sell fund shares.
Schwab U.S. REIT ETF | Shares of the Fund May Trade at Prices Other Than NAV [Member]
Prospectus [Line Items]
Risk [Text Block]	Shares of the Fund May Trade at Prices Other Than NAV. Fund shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of the shares of the fund will approximate the fund’s net asset value (NAV), there may be times when the market price and the NAV vary significantly. An investor may pay more than NAV when buying shares of the fund in the secondary market, and an investor may receive less than NAV when selling those shares in the secondary market. The market price of fund shares may deviate, sometimes significantly, from NAV during periods of market volatility or market disruption.
Schwab U.S. REIT ETF | Real Estate Investment Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	Real Estate Investment Risk. Due to the composition of the index, the fund concentrates its investments in real estate companies and companies related to the real estate industry. As such, the fund is subject to risks associated with the direct ownership of real estate securities and an investment in the fund will be closely linked to the performance of the real estate markets. These risks include, among others: declines in the value of (or income generated by) 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 U.S. REIT ETF | REITs Risk [Member]
Prospectus [Line Items]
Risk [Text Block]	REITs Risk. In addition to the risks associated with investing in securities of real estate companies and real estate related companies, REITs are subject to certain additional risks. Equity REITs may be affected by changes in the value of the underlying properties owned by the trusts. Further, REITs are dependent upon specialized management skills and cash flows, and may have their investments in relatively few properties, or in a small geographic area or a single property type. Failure of a company to qualify as a REIT under federal tax law may have adverse consequences to the fund. In addition, REITs have their own expenses, and the fund will bear a proportionate share of those expenses. The value of a REIT may be affected by changes in interest rates.