| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | SCHWAB STRATEGIC TRUST |
| Entity Central Index Key | 0001454889 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | SCHWAB STRATEGIC TRUST |
| Entity Central Index Key | 0001454889 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Schwab US TIPS ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab U.S. TIPS ETF |
| Class Name | Schwab U.S. TIPS ETF |
| Trading Symbol | SCHP |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab U.S. TIPS ETF $2 0.03% |
| Expenses Paid, Amount | $ 2 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year 5 Years 10 Years Fund: Schwab U.S. TIPS ETF (08/05/2010) Market Price Return 2 0.75% 2.59% 2.02% 1.86% NAV Return 2 0.85% 2.69% 2.03% 1.86% Bloomberg US Aggregate Bond Index 3 -0.71% 2.63% -0.23% 1.35% Bloomberg US Treasury Inflation-Linked Bond Index (Series-L) SM 0.70% 2.71% 2.07% 1.91% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. Index ownership — Bloomberg ® and Bloomberg US Treasury Inflation-Linked Bond Index (Series-L) SM are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (BISL), the administrator of the indices (collectively, Bloomberg). Bloomberg is not affiliated with Charles Schwab Investment Management, Inc., and Bloomberg does not approve, endorse, review, or recommend Schwab U.S. TIPS ETF. Bloomberg does not guarantee the timeliness, accurateness, or completeness of any data or information relating to Schwab U.S. TIPS ETF. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively. 3 In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Treasury Inflation-Linked Bond Index (Series-L) SM to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Treasury Inflation-Linked Bond Index (Series-L) SM . The fund does not seek to track the regulatory index. |
| Performance Inception Date | Aug. 05, 2010 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 11,135,000,000 |
| Holdings Count | Holding | 49 |
| Investment Company, Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (millions) $11,135 Number of Holdings 49 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 13% Weighted Average Maturity 7.1 Yrs Weighted Average Duration 6.5 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. U.S. Treasury Inflation-Protected Securities (TIPS) generally have lower yields than conventional fixed rate bonds and will likely decline in price during periods of deflation, which could result in losses. 1 Less than 0.05%. 2 Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended. |
| Schwab Short-Term U.S. Treasury ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab Short-Term U.S. Treasury ETF |
| Class Name | Schwab Short-Term U.S. Treasury ETF |
| Trading Symbol | SCHO |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab Short-Term U.S. Treasury ETF $2 0.03% |
| Expenses Paid, Amount | $ 2 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year 5 Years 10 Years Fund: Schwab Short-Term U.S. Treasury ETF (08/05/2010) Market Price Return 2 1.17% 4.45% 0.98% 1.06% NAV Return 2 1.19% 4.47% 0.98% 1.06% Bloomberg US Aggregate Bond Index 3 -0.71% 2.63% -0.23% 1.35% Bloomberg US Treasury 1-3 Year Index 1.19% 4.51% 1.02% 1.12% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. Index ownership — Bloomberg ® and Bloomberg US Treasury 1-3 Year Index are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (BISL), the administrator of the indices (collectively, Bloomberg). Bloomberg is not affiliated with Charles Schwab Investment Management, Inc., and Bloomberg does not approve, endorse, review, or recommend Schwab Short-Term U.S. Treasury ETF. Bloomberg does not guarantee the timeliness, accurateness, or completeness of any data or information relating to Schwab Short-Term U.S. Treasury ETF. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively. 3 In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Treasury 1-3 Year Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Treasury 1-3 Year Index. The fund does not seek to track the regulatory index. |
| Performance Inception Date | Aug. 05, 2010 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 10,543,000,000 |
| Holdings Count | Holding | 97 |
| Investment Company, Portfolio Turnover | 33% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (millions) $10,543 Number of Holdings 97 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 33% Weighted Average Maturity 2.0 Yrs Weighted Average Duration 1.9 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 1 Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended. |
| Schwab Intermediate-Term U.S. Treasury ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab Intermediate-Term U.S. Treasury ETF |
| Class Name | Schwab Intermediate-Term U.S. Treasury ETF |
| Trading Symbol | SCHR |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab Intermediate-Term U.S. Treasury ETF $1 0.03% |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year 5 Years 10 Years Fund: Schwab Intermediate-Term U.S. Treasury ETF (08/05/2010 Market Price Return 2 -0.37% 2.51% -0.27% 1.07% NAV Return 2 -0.39% 2.53% -0.29% 1.07% Bloomberg US Aggregate Bond Index 3 -0.71% 2.63% -0.23% 1.35% Bloomberg US Treasury 3-10 Year Index -0.48% 2.55% -0.26% 1.13% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. Index ownership — Bloomberg ® and Bloomberg US Treasury 3-10 Year Index are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (BISL), the administrator of the indices (collectively, Bloomberg). Bloomberg is not affiliated with Charles Schwab Investment Management, Inc., and Bloomberg does not approve, endorse, review, or recommend Schwab Intermediate-Term U.S. Treasury ETF. Bloomberg does not guarantee the timeliness, accurateness, or completeness of any data or information relating to Schwab Intermediate-Term U.S. Treasury ETF. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively. 3 In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Treasury 3-10 Year Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Treasury 3-10 Year Index. The fund does not seek to track the regulatory index. |
| Performance Inception Date | Aug. 05, 2010 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 8,091,000,000 |
| Holdings Count | Holding | 107 |
| Investment Company, Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (millions) $8,091 Number of Holdings 107 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 19% Weighted Average Maturity 5.6 Yrs Weighted Average Duration 5.0 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 1 Less than 0.05%. 2 Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended. |
| Schwab Long-Term U.S. Treasury ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab Long-Term U.S. Treasury ETF |
| Class Name | Schwab Long-Term U.S. Treasury ETF |
| Trading Symbol | SCHQ |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab Long-Term U.S. Treasury ETF $1 0.03% |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year Since Inception* Fund: Schwab Long-Term U.S. Treasury ETF (10/10/2019) Market Price Return 2 -4.73% -5.73% -6.21% NAV Return 2 -4.73% -5.65% -6.22% Bloomberg US Aggregate Bond Index 3 -0.71% 2.63% -0.80% Bloomberg US Long Treasury Index -5.01% -5.61% -6.20% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. Index ownership — Bloomberg ® and Bloomberg US Long Treasury Index are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (BISL), the administrator of the indices (collectively, Bloomberg). Bloomberg is not affiliated with Charles Schwab Investment Management, Inc., and Bloomberg does not approve, endorse, review, or recommend Schwab Long-Term U.S. Treasury ETF. Bloomberg does not guarantee the timeliness, accurateness, or completeness of any data or information relating to Schwab Long-Term U.S. Treasury ETF. * Inception (10/10/2019) represents the date that the shares began trading in the secondary market. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. NAV is used as a proxy for purposes of calculating Market Price Return on inception date. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively. 3 In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Long Treasury Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Long Treasury Index. The fund does not seek to track the regulatory index. |
| Performance Inception Date | Oct. 10, 2019 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 677,315,000 |
| Holdings Count | Holding | 85 |
| Investment Company, Portfolio Turnover | 10% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (thousands) $677,315 Number of Holdings 85 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 10% Weighted Average Maturity 22.5 Yrs Weighted Average Duration 14.9 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 1 Less than 0.05%. 2 Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended. |
| Schwab U.S. Aggregate Bond ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab U.S. Aggregate Bond ETF |
| Class Name | Schwab U.S. Aggregate Bond ETF |
| Trading Symbol | SCHZ |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab U.S. Aggregate Bond ETF $1 0.03% |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year 5 Years 10 Years Fund: Schwab U.S. Aggregate Bond ETF (07/14/2011) Market Price Return 2 -0.63% 2.46% -0.29% 1.26% NAV Return 2 -0.63% 2.59% -0.29% 1.28% Bloomberg US Aggregate Bond Index -0.71% 2.63% -0.23% 1.35% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. Index ownership — Bloomberg ® and Bloomberg US Aggregate Bond Index are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (BISL), the administrator of the indices (collectively, Bloomberg). Bloomberg is not affiliated with Charles Schwab Investment Management, Inc., and Bloomberg does not approve, endorse, review, or recommend Schwab U.S. Aggregate Bond ETF. Bloomberg does not guarantee the timeliness, accurateness, or completeness of any data or information relating to Schwab U.S. Aggregate Bond ETF. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively. |
| Performance Inception Date | Jul. 14, 2011 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 7,679,000,000 |
| Holdings Count | Holding | 10,378 |
| Investment Company, Portfolio Turnover | 26% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (millions) $7,679 Number of Holdings 10,378 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 26% Weighted Average Maturity 8.4 Yrs Weighted Average Duration 6.0 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 1 The fund may seek to obtain exposure to U.S. agency mortgage pass-through securities, in part or in full, through the use of “to-be-announced” or “TBA” transactions, which are standardized contracts for future delivery of mortgage pass-through securities in which the exact mortgage pools to be delivered are not specified until a few days prior to settlement. These transactions represented approximately 1.2% of total investments on June 30, 2024. 2 Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended. |
| Schwab 1-5 Year Corporate Bond ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab 1-5 Year Corporate Bond ETF |
| Class Name | Schwab 1-5 Year Corporate Bond ETF |
| Trading Symbol | SCHJ |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab 1-5 Year Corporate Bond ETF $2 0.03% |
| Expenses Paid, Amount | $ 2 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year Since Inception* Fund: Schwab 1-5 Year Corporate Bond ETF (10/10/2019) Market Price Return 2 1.43% 5.80% 1.43% NAV Return 2 1.56% 5.93% 1.44% Bloomberg US Aggregate Bond Index 3 -0.71% 2.63% -0.80% Bloomberg US 1-5 Year Corporate Bond Index 1.56% 6.01% 1.52% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. Index ownership — Bloomberg ® and Bloomberg US 1-5 Year Corporate Bond Index are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (BISL), the administrator of the indices (collectively, Bloomberg). Bloomberg is not affiliated with Charles Schwab Investment Management, Inc., and Bloomberg does not approve, endorse, review, or recommend Schwab 1-5 Year Corporate Bond ETF. Bloomberg does not guarantee the timeliness, accurateness, or completeness of any data or information relating to Schwab 1-5 Year Corporate Bond ETF. * Inception (10/10/2019) represents the date that the shares began trading in the secondary market. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. NAV is used as a proxy for purposes of calculating Market Price Return on inception date. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively. 3 In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US 1-5 Year Corporate Bond Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US 1-5 Year Corporate Bond Index. The fund does not seek to track the regulatory index. |
| Performance Inception Date | Oct. 10, 2019 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 408,158,000 |
| Holdings Count | Holding | 2,604 |
| Investment Company, Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (thousands) $408,158 Number of Holdings (excludes derivatives) 2,604 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 19% Weighted Average Maturity 2.9 Yrs Weighted Average Duration 2.6 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments 1 Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 1 Excludes derivatives. 2 Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended. |
| Schwab 5-10 Year Corporate Bond ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab 5-10 Year Corporate Bond ETF |
| Class Name | Schwab 5-10 Year Corporate Bond ETF |
| Trading Symbol | SCHI |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab 5-10 Year Corporate Bond ETF $1 0.03% |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year Since Inception* Fund: Schwab 5-10 Year Corporate Bond ETF (10/10/2019) Market Price Return 2 0.27% 5.38% 0.38% NAV Return 2 0.27% 5.66% 0.40% Bloomberg US Aggregate Bond Index 3 -0.71% 2.63% -0.80% Bloomberg US 5-10 Year Corporate Bond Index 0.19% 5.72% 0.47% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. Index ownership — Bloomberg ® and Bloomberg US 5-10 Year Corporate Bond Index are service marks of Bloomberg Finance L.P. and its affiliates, including Bloomberg Index Services Limited (BISL), the administrator of the indices (collectively, Bloomberg). Bloomberg is not affiliated with Charles Schwab Investment Management, Inc., and Bloomberg does not approve, endorse, review, or recommend Schwab 5-10 Year Corporate Bond ETF. Bloomberg does not guarantee the timeliness, accurateness, or completeness of any data or information relating to Schwab 5-10 Year Corporate Bond ETF. * Inception (10/10/2019) represents the date that the shares began trading in the secondary market. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. NAV is used as a proxy for purposes of calculating Market Price Return on inception date. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively. 3 In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US 5-10 Year Corporate Bond Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US 5-10 Year Corporate Bond Index. The fund does not seek to track the regulatory index. |
| Performance Inception Date | Oct. 10, 2019 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 6,598,000,000 |
| Holdings Count | Holding | 2,191 |
| Investment Company, Portfolio Turnover | 17% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (millions) $6,598 Number of Holdings (excludes derivatives) 2,191 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 17% Weighted Average Maturity 7.4 Yrs Weighted Average Duration 6.1 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments 1 Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. 1 Excludes derivatives. 2 Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended. |
| Schwab Municipal Bond ETF | |
| Shareholder Report [Line Items] | |
| Fund Name | Schwab Municipal Bond ETF |
| Class Name | Schwab Municipal Bond ETF |
| Trading Symbol | SCMB |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This semiannual shareholder report 2024. |
| Shareholder Report Annual or Semi-Annual | semi annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/schwabetfs_prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders mysummaryprospectus.com . |
| Additional Information Phone Number | 1-866-414-6349 |
| Additional Information Email | orders@mysummaryprospectus.com |
| Additional Information Website | www.schwabassetmanagement.com/schwabetfs_prospectus |
| Expenses [Text Block] | FUND COSTS FOR THE LAST six months ENDED June 30, 2024 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT) COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT Schwab Municipal Bond ETF $1 0.03% |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.03% |
| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Fund and Inception Date 6 Months 1 Year Since Inception* Fund: Schwab Municipal Bond ETF (10/12/2022) Market Price Return 2 -0.91% 2.51% 4.73% NAV Return 2 -0.40% 2.93% 4.89% Bloomberg Municipal Bond Index 3 -0.40% 3.21% 5.33% ICE AMT-Free Core U.S. National Municipal Index -0.30% 3.06% 4.93% All total returns on this page assume dividends and distributions were reinvested. Index figures do not include trading and management costs, which would lower performance. Indices are unmanaged and cannot be invested in directly. Performance results less than one year are not annualized. For index definitions, please see www.schwabassetmanagement.com/glossary. Shares are bought and sold at market price, which may be higher or lower than the net asset value (NAV). Brokerage commissions will reduce returns. “ICE ® ” is a registered trademark of ICE Data Indices, LLC or its affiliates. This trademark has been licensed, along with the ICE AMT-Free Core U.S. National Municipal Index (“Index”) for use by Charles Schwab Investment Management, Inc., dba Schwab Asset Management, in connection with the Schwab Municipal Bond ETF. The Schwab Municipal Bond ETF is not sponsored, endorsed, sold or promoted by ICE Data Indices, LLC, its affiliates or its Third Party Suppliers (“ICE Data and its Suppliers”). ICE Data and its Suppliers make no representations or warranties regarding the advisability of investing in the Schwab Municipal Bond ETF. * Inception (10/12/2022) represents the date that the shares began trading in the secondary market. 1 Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares. 2 ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. NAV is used as a proxy for purposes of calculating Market Price Return on inception date. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively 3 In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the ICE AMT-Free Core U.S. National Municipal Index to the Bloomberg Municipal Bond Index. The Bloomberg Municipal Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the ICE AMT-Free Core U.S. National Municipal Index. The fund does not seek to track the regulatory index. |
| Performance Inception Date | Oct. 12, 2022 |
| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/schwabetfs_prospectus . |
| Net Assets | $ 347,840,000 |
| Holdings Count | Holding | 2,385 |
| Investment Company, Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Statistics Net Assets (thousands) $347,840 Number of Holdings 2,385 Portfolio Turnover Rate (not annualized; excludes in-kind transactions) 15% Weighted Average Maturity 7.6 Yrs Weighted Average Duration 6.1 Yrs |
| Holdings [Text Block] | Portfolio Composition By Security Type % of Investments Portfolio holdings may have changed since the report date. An index is a statistical composite of a specified financial market or sector. Unlike the fund, an index does not actually hold a portfolio of securities and its return is not inclusive of operational and transaction costs incurred by the fund. Fixed-income securities are subject to increased loss of principal during periods of rising interest rates. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. |
| Shareholder Report, Average Annual Return (Details) | 6 Months Ended | 12 Months Ended | 21 Months Ended | 57 Months Ended | 60 Months Ended | 120 Months Ended | |||
| Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | [3] | Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | |||
| Schwab Municipal Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [1],[2] | (0.91%) | 2.51% | 4.73% | |||||
| Schwab 5-10 Year Corporate Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [1],[2] | 0.27% | 5.38% | 0.38% | [4] | ||||
| Schwab 1-5 Year Corporate Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [1],[2] | 1.43% | 5.80% | 1.43% | [5] | ||||
| Schwab U.S. Aggregate Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [2],[6] | (0.63%) | 2.46% | (0.29%) | 1.26% | ||||
| Schwab Long-Term U.S. Treasury ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [1],[2] | (4.73%) | (5.73%) | (6.21%) | [5] | ||||
| Schwab Intermediate-Term U.S. Treasury ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [2],[6] | (0.37%) | 2.51% | (0.27%) | 1.07% | ||||
| Schwab Short-Term U.S. Treasury ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [2],[6] | 1.17% | 4.45% | 0.98% | 1.06% | ||||
| Schwab US TIPS ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Market Price Return | ||||||||
| Average Annual Return, Percent | [2],[6] | 0.75% | 2.59% | 2.02% | 1.86% | ||||
| Without Sales Load [Member] | Schwab Municipal Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [1],[2] | (0.40%) | 2.93% | 4.89% | |||||
| Without Sales Load [Member] | Schwab 5-10 Year Corporate Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [1],[2] | 0.27% | 5.66% | 0.40% | [4] | ||||
| Without Sales Load [Member] | Schwab 1-5 Year Corporate Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [1],[2] | 1.56% | 5.93% | 1.44% | [5] | ||||
| Without Sales Load [Member] | Schwab U.S. Aggregate Bond ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [2],[6] | (0.63%) | 2.59% | (0.29%) | 1.28% | ||||
| Without Sales Load [Member] | Schwab Long-Term U.S. Treasury ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [1],[2] | (4.73%) | (5.65%) | (6.22%) | [5] | ||||
| Without Sales Load [Member] | Schwab Intermediate-Term U.S. Treasury ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [2],[6] | (0.39%) | 2.53% | (0.29%) | 1.07% | ||||
| Without Sales Load [Member] | Schwab Short-Term U.S. Treasury ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [2],[6] | 1.19% | 4.47% | 0.98% | 1.06% | ||||
| Without Sales Load [Member] | Schwab US TIPS ETF | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | NAV Return | ||||||||
| Average Annual Return, Percent | [2],[6] | 0.85% | 2.69% | 2.03% | 1.86% | ||||
| Bloomberg Municipal Bond Index [Member] | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | [7] | Bloomberg Municipal Bond Index | |||||||
| Average Annual Return, Percent | (0.40%) | 3.21% | 5.33% | ||||||
| Bloomberg US Aggregate Bond Index [Member] | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | [4],[8],[9],[10],[11],[12] | Bloomberg US Aggregate Bond Index | |||||||
| Average Annual Return, Percent | (0.71%) | 2.63% | (0.80%) | [5] | (0.23%) | 1.35% | |||
| ICE AMT Free Core US National Municipal Index [Member] | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | ICE AMT-Free Core U.S. National Municipal Index | ||||||||
| Average Annual Return, Percent | (0.30%) | 3.06% | 4.93% | ||||||
| Bloomberg US 5-10 Year Corporate Bond Index | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg US 5-10 Year Corporate Bond Index | ||||||||
| Average Annual Return, Percent | 0.19% | 5.72% | 0.47% | [5] | |||||
| Bloomberg US 1-5 Year Corporate Bond Index | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg US 1-5 Year Corporate Bond Index | ||||||||
| Average Annual Return, Percent | 1.56% | 6.01% | 1.52% | [5] | |||||
| Bloomberg US Long Treasury Index [Member] | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg US Long Treasury Index | ||||||||
| Average Annual Return, Percent | (5.01%) | (5.61%) | (6.20%) | [5] | |||||
| Bloomberg US Treasury 3-10 Year Index | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg US Treasury 3-10 Year Index | ||||||||
| Average Annual Return, Percent | (0.48%) | 2.55% | (0.26%) | 1.13% | |||||
| Bloomberg US Treasury 1-3 Year Index | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg US Treasury 1-3 Year Index | ||||||||
| Average Annual Return, Percent | 1.19% | 4.51% | 1.02% | 1.12% | |||||
| Bloomberg US Treasury Inflation-Linked Bond Index (Series-L)SM [Member] | |||||||||
| Average Annual Return [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg US Treasury Inflation-Linked Bond Index (Series-L)SM | ||||||||
| Average Annual Return, Percent | 0.70% | 2.71% | 2.07% | 1.91% | |||||
| [1]ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. NAV is used as a proxy for purposes of calculating Market Price Return on inception date. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively.[2]Performance does not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.[3]Inception (10/12/2022) represents the date that the shares began trading in the secondary market.[4]In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US 5-10 Year Corporate Bond Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US 5-10 Year Corporate Bond Index. The fund does not seek to track the regulatory index.[5]Inception (10/10/2019) represents the date that the shares began trading in the secondary market.[6]ETF performance must be shown based on both a Market Price and a NAV basis. The fund’s per share NAV is the value of one share of the fund. NAV is calculated by taking the fund’s total assets (including the fair value of securities owned), subtracting liabilities, and dividing by the number of shares outstanding. The NAV Return is based on the NAV of the fund, and the Market Price Return is based on the market price per share of the fund. The price used to calculate market return (Market Price) is determined using the Official Closing Price of the primary stock exchange (generally, 4:00 p.m. Eastern time) and may not represent the returns you would receive if shares were traded at other times. Market Price and NAV returns assume that dividends and capital gain distributions have been reinvested in the fund at Market Price and NAV, respectively.[7]In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the ICE AMT-Free Core U.S. National Municipal Index to the Bloomberg Municipal Bond Index. The Bloomberg Municipal Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the ICE AMT-Free Core U.S. National Municipal Index. The fund does not seek to track the regulatory index.[8]In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US 1-5 Year Corporate Bond Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US 1-5 Year Corporate Bond Index. The fund does not seek to track the regulatory index.[9]In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Long Treasury Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Long Treasury Index. The fund does not seek to track the regulatory index.[10]In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Treasury 1-3 Year Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Treasury 1-3 Year Index. The fund does not seek to track the regulatory index.[11]In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Treasury 3-10 Year Index to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Treasury 3-10 Year Index. The fund does not seek to track the regulatory index.[12]In anticipation of new regulatory requirements, the fund’s regulatory index has changed from the Bloomberg US Treasury Inflation-Linked Bond Index (Series-L)SM to the Bloomberg US Aggregate Bond Index. The Bloomberg US Aggregate Bond Index provides a broad measure of market performance. The fund generally invests in securities that are included in the Bloomberg US Treasury Inflation-Linked Bond Index (Series-L)SM. The fund does not seek to track the regulatory index. | |||||||||
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 | |
| Schwab US TIPS ETF | Short Term Investment [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0% | [1],[2] |
| Schwab US TIPS ETF | Treasuries [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 100% | |
| Schwab Short-Term U.S. Treasury ETF | Short Term Investment [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.10% | [1] |
| Schwab Short-Term U.S. Treasury ETF | Treasuries [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 99.90% | |
| Schwab Intermediate-Term U.S. Treasury ETF | Short Term Investment [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0% | [1],[2] |
| Schwab Intermediate-Term U.S. Treasury ETF | Treasuries [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 100% | |
| Schwab Long-Term U.S. Treasury ETF | Short Term Investment [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0% | [1],[2] |
| Schwab Long-Term U.S. Treasury ETF | Treasuries [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 100% | |
| Schwab U.S. Aggregate Bond ETF | Short Term Investment [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 2% | [1] |
| Schwab U.S. Aggregate Bond ETF | Treasuries [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 42.30% | |
| Schwab U.S. Aggregate Bond ETF | Securitized [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 27.30% | [3] |
| Schwab U.S. Aggregate Bond ETF | Corporates [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 23.80% | |
| Schwab U.S. Aggregate Bond ETF | Government Related [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.60% | |
| Schwab 1-5 Year Corporate Bond ETF | Short Term Investment [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.40% | [1],[4] |
| Schwab 1-5 Year Corporate Bond ETF | Corporates [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 99.60% | [4] |
| Schwab 5-10 Year Corporate Bond ETF | Short Term Investment [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.60% | [1],[4] |
| Schwab 5-10 Year Corporate Bond ETF | Corporates [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 99.40% | [4] |
| Schwab Municipal Bond ETF | Revenue Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 63.50% | |
| Schwab Municipal Bond ETF | General Obligation Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 32% | |
| Schwab Municipal Bond ETF | Pre Refunded Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.90% | |
| Schwab Municipal Bond ETF | Other [Member] | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.60% | |
| [1]Includes the fund’s position in money market mutual funds registered under the Investment Company Act of 1940, as amended.[2]Less than 0.05%.[3]The fund may seek to obtain exposure to U.S. agency mortgage pass-through securities, in part or in full, through the use of “to-be-announced” or “TBA” transactions, which are standardized contracts for future delivery of mortgage pass-through securities in which the exact mortgage pools to be delivered are not specified until a few days prior to settlement. These transactions represented approximately 1.2% of total investments on June 30, 2024.[4]Excludes derivatives. | ||
