Shareholder Report |
12 Months Ended | |||||||||||||||||||||||
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Dec. 31, 2025
USD ($)
Holding
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| Shareholder Report [Line Items] | ||||||||||||||||||||||||
| Document Type | N-CSR | |||||||||||||||||||||||
| Amendment Flag | false | |||||||||||||||||||||||
| Registrant Name | Schwab Capital Trust | |||||||||||||||||||||||
| Entity Central Index Key | 0000904333 | |||||||||||||||||||||||
| Entity Investment Company Type | N-1A | |||||||||||||||||||||||
| Document Period End Date | Dec. 31, 2025 | |||||||||||||||||||||||
| Schwab Monthly Income Fund - Target Payout | ||||||||||||||||||||||||
| Shareholder Report [Line Items] | ||||||||||||||||||||||||
| Fund Name | Schwab Monthly Income Fund – Target Payout | |||||||||||||||||||||||
| Class Name | Schwab Monthly Income Fund – Target Payout | |||||||||||||||||||||||
| Trading Symbol | SWJRX | |||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the fund for the period of January 1, 2025, to December 31, 2025.
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| Shareholder Report Annual or Semi-Annual | annual shareholder report | |||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders@mysummaryprospectus.com .
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| Additional Information Phone Number | 1-866-414-6349 | |||||||||||||||||||||||
| Additional Information Email | orders@mysummaryprospectus.com | |||||||||||||||||||||||
| Additional Information Website | www.schwabassetmanagement.com/prospectus | |||||||||||||||||||||||
| Expenses [Text Block] | FUND COSTS FOR THE LAST year ENDED December 31, 2025 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
* Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund. This agreement to limit the total annual fund operating expenses is limited to the fund’s direct operating expenses and, therefore, does not apply to acquired fund fees and expenses (AFFE), which are indirect expenses incurred by the fund through its investments in the underlying funds. |
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| Expenses Paid, Amount | $ 0 | [1] | ||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | [1] | ||||||||||||||||||||||
| Factors Affecting Performance [Text Block] | MANAGEMENT’S DISCUSSION OF FUND PERFORMANCE For the 12-month reporting period ended December 31, 2025, the fund returned 12.17%. The S&P 500 ® Index, which provides a broad measure of equity market performance, and the Bloomberg US Aggregate Bond Index, which provides a broad measure of bond market performance, returned 17.88% and 7.30%, respectively. The fund’s internally calculated comparative index, the Target Payout Composite Index (the composite index), returned 11.66%. ■ The fund’s distribution yield (payout) was 4.78% 1 ■ Asset allocations were broadly in line with those of the composite index ■ Top contributors to total return: ● Schwab International Dividend Equity ETF ● Schwab U.S. Aggregate Bond Index Fund ■ Over the reporting period, there were no detractors from the return of the fund. However, the smallest contributors to total return were: ● BlackRock High Yield Bond Portfolio (Class K) ● Schwab 5-10 Year Corporate Bond ETF Portfolio holdings may have changed since the report date. 1 Distributions may exceed income available and may include capital gains or return of capital to help reach the annual payout rate. A return of capital is a distribution from the shareholder’s investment principal, rather than net profits from the fund’s returns. Shareholders who receive periodic distributions consisting of a return of capital may be under the impression that they are receiving net profits when they are not. Return of capital reduces your cost basis in the fund’s shares and is not taxable to you until your cost basis has been reduced to zero. The tax-basis of distributions are finalized at fiscal year-end and may be recharacterized from income distributions to capital gains or return of capital. |
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| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. | |||||||||||||||||||||||
| Line Graph [Table Text Block] | Performance of Hypothetical $10,000 Investment (December 31, 2015 - December 31, 2025) 1 ![]() 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. 1 The fund’s routine expenses have been absorbed by the investment adviser and its affiliates. Without these reductions, the fund’s returns would have been lower. T hese returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. |
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| Average Annual Return [Table Text Block] | Average Annual Total Returns
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. 1 The fund’s routine expenses have been absorbed by the investment adviser and its affiliates. Without these reductions, the fund’s returns would have been lower. T hese returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. |
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| Performance Inception Date | Mar. 28, 2008 | |||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | T hese returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares.
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| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/prospectus . |
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| Net Assets | $ 53,000,000 | |||||||||||||||||||||||
| Holdings Count | Holding | 11 | |||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | |||||||||||||||||||||||
| Investment Company, Portfolio Turnover | 27.00% | |||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Statistics
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| Holdings [Text Block] | Asset Class Weightings % of Investments ![]() Top Holdings % of Net Assets ![]() Portfolio holdings may have changed since the report date. |
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| Largest Holdings [Text Block] | Top Holdings % of Net Assets ![]() Portfolio holdings may have changed since the report date. |
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| Schwab Monthly Income Fund - Flexible Payout | ||||||||||||||||||||||||
| Shareholder Report [Line Items] | ||||||||||||||||||||||||
| Fund Name | Schwab Monthly Income Fund – Flexible Payout | |||||||||||||||||||||||
| Class Name | Schwab Monthly Income Fund – Flexible Payout | |||||||||||||||||||||||
| Trading Symbol | SWKRX | |||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the fund for the period of January 1, 2025, to December 31, 2025.
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| Shareholder Report Annual or Semi-Annual | annual shareholder report | |||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders@mysummaryprospectus.com .
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| Additional Information Phone Number | 1-866-414-6349 | |||||||||||||||||||||||
| Additional Information Email | orders@mysummaryprospectus.com | |||||||||||||||||||||||
| Additional Information Website | www.schwabassetmanagement.com/prospectus | |||||||||||||||||||||||
| Expenses [Text Block] | FUND COSTS FOR THE LAST year ENDED December 31, 2025 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
* Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund. This agreement to limit the total annual fund operating expenses is limited to the fund’s direct operating expenses and, therefore, does not apply to acquired fund fees and expenses (AFFE), which are indirect expenses incurred by the fund through its investments in the underlying funds. |
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| Expenses Paid, Amount | $ 0 | [1] | ||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | [1] | ||||||||||||||||||||||
| Factors Affecting Performance [Text Block] | MANAGEMENT’S DISCUSSION OF FUND PERFORMANCE For the 12-month reporting period ended December 31, 2025, the fund returned 12.14%. The S&P 500 ® Index, which provides a broad measure of equity market performance, and the Bloomberg US Aggregate Bond Index, which provides a broad measure of bond market performance, returned 17.88% and 7.30%, respectively. The fund’s internally calculated comparative index, the Flexible Payout Composite Index (the composite index), returned 11.66%. ■ The fund’s distribution yield (payout) was 4.41% 1 ■ Asset allocations were broadly in line with those of the composite index ■ Top contributors to total return: ● Schwab International Dividend Equity ETF ● Schwab U.S. Aggregate Bond Index Fund ■ Over the reporting period, there were no detractors from the return of the fund. However, the smallest contributors to total return were: ● BlackRock High Yield Bond Portfolio (Class K) ● Schwab 5-10 Year Corporate Bond ETF Portfolio holdings may have changed since the report date. 1 Distributions may exceed income available and may include capital gains or return of capital to help reach the annual payout rate. A return of capital is a distribution from the shareholder’s investment principal, rather than net profits from the fund’s returns. Shareholders who receive periodic distributions consisting of a return of capital may be under the impression that they are receiving net profits when they are not. Return of capital reduces your cost basis in the fund’s shares and is not taxable to you until your cost basis has been reduced to zero. The tax-basis of distributions are finalized at fiscal year-end and may be recharacterized from income distributions to capital gains or return of capital. |
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| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. | |||||||||||||||||||||||
| Line Graph [Table Text Block] | Performance of Hypothetical $10,000 Investment (December 31, 2015 - December 31, 2025) 1 ![]() 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. 1 The fund’s routine expenses have been absorbed by the investment adviser and its affiliates. Without these reductions, the fund’s returns would have been lower. These returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. |
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| Average Annual Return [Table Text Block] | Average Annual Total Returns
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. 1 The fund’s routine expenses have been absorbed by the investment adviser and its affiliates. Without these reductions, the fund’s returns would have been lower. These returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. |
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| Performance Inception Date | Mar. 28, 2008 | |||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | These returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares.
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| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/prospectus . |
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| Net Assets | $ 74,000,000 | |||||||||||||||||||||||
| Holdings Count | Holding | 11 | |||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | |||||||||||||||||||||||
| Investment Company, Portfolio Turnover | 25.00% | |||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Statistics
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| Holdings [Text Block] | Asset Class Weightings % of Investments ![]() Top Holdings % of Net Assets ![]() Portfolio holdings may have changed since the report date. |
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| Largest Holdings [Text Block] | Top Holdings % of Net Assets ![]() Portfolio holdings may have changed since the report date. |
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| Schwab Monthly Income Fund - Income Payout | ||||||||||||||||||||||||
| Shareholder Report [Line Items] | ||||||||||||||||||||||||
| Fund Name | Schwab Monthly Income Fund – Income Payout | |||||||||||||||||||||||
| Class Name | Schwab Monthly Income Fund – Income Payout | |||||||||||||||||||||||
| Trading Symbol | SWLRX | |||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the fund for the period of January 1, 2025, to December 31, 2025.
|
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| Shareholder Report Annual or Semi-Annual | annual shareholder report | |||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at www.schwabassetmanagement.com/prospectus . You can also request this information by calling 1-866-414-6349 or by sending an email request to orders@mysummaryprospectus.com .
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| Additional Information Phone Number | 1-866-414-6349 | |||||||||||||||||||||||
| Additional Information Email | orders@mysummaryprospectus.com | |||||||||||||||||||||||
| Additional Information Website | www.schwabassetmanagement.com/prospectus | |||||||||||||||||||||||
| Expenses [Text Block] | FUND COSTS FOR THE LAST year ENDED December 31, 2025 (BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
* Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund. This agreement to limit the total annual fund operating expenses is limited to the fund’s direct operating expenses and, therefore, does not apply to acquired fund fees and expenses (AFFE), which are indirect expenses incurred by the fund through its investments in the underlying funds. |
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| Expenses Paid, Amount | $ 0 | [1] | ||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | [1] | ||||||||||||||||||||||
| Factors Affecting Performance [Text Block] | MANAGEMENT’S DISCUSSION OF FUND PERFORMANCE For the 12-month reporting period ended December 31, 2025, the fund returned 9.85%. The S&P 500 ® Index, which provides a broad measure of equity market performance, and the Bloomberg US Aggregate Bond Index, which provides a broad measure of bond market performance, returned 17.88% and 7.30%, respectively. The fund’s internally calculated comparative index, the Income Payout Composite Index (the composite index), returned 9.67%. ■ The fund’s distribution yield (payout) was 4.63% 1 ■ Asset allocations were broadly in line with those of the composite index ■ Top contributors to total return: ● Schwab International Dividend Equity ETF ● Schwab U.S. Aggregate Bond Index Fund ■ Over the reporting period, there were no detractors from the return of the fund. However, the smallest contributors to total return were: ● BlackRock High Yield Bond Portfolio (Class K) ● Schwab Long-Term U.S. Treasury ETF Portfolio holdings may have changed since the report date. 1 Does not expect to include capital gains or return of capital to help reach the annual payout rate. A return of capital is a distribution from the shareholder’s investment principal, rather than net profits from the fund’s returns. Shareholders who receive periodic distributions consisting of a return of capital may be under the impression that they are receiving net profits when they are not. Return of capital reduces your cost basis in the fund’s shares and is not taxable to you until your cost basis has been reduced to zero. The tax-basis of distributions are finalized at fiscal year-end and may be recharacterized from income distributions to capital gains or return of capital. |
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| Performance Past Does Not Indicate Future [Text] | The performance data quoted represents past performance. Past performance does not guarantee future results. | |||||||||||||||||||||||
| Line Graph [Table Text Block] | Performance of Hypothetical $10,000 Investment (December 31, 2015 - December 31, 2025) 1 ![]() 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. 1 The fund’s routine expenses have been absorbed by the investment adviser and its affiliates. Without these reductions, the fund’s returns would have been lower. These returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. |
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| Average Annual Return [Table Text Block] | Average Annual Total Returns
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. 1 The fund’s routine expenses have been absorbed by the investment adviser and its affiliates. Without these reductions, the fund’s returns would have been lower. These returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. |
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| Performance Inception Date | Mar. 28, 2008 | |||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | These returns do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares.
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| Updated Performance Information Location [Text Block] | To obtain performance information current to the most recent month end, please visit www.schwabassetmanagement.com/prospectus . |
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| Net Assets | $ 66,000,000 | |||||||||||||||||||||||
| Holdings Count | Holding | 12 | |||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | |||||||||||||||||||||||
| Investment Company, Portfolio Turnover | 25.00% | |||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Statistics
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| Holdings [Text Block] | Asset Class Weightings % of Investments ![]() Top Holdings % of Net Assets ![]() Portfolio holdings may have changed since the report date. |
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| Largest Holdings [Text Block] | Top Holdings % of Net Assets ![]() Portfolio holdings may have changed since the report date. |
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