v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name The Charles Schwab Family of Funds
Entity Central Index Key 0000857156
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Schwab Prime Advantage Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Prime Advantage Money Fund
Class Name Investor Shares
Trading Symbol SWVXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED
June
30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Prime Advantage Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 389,718,000,000
Holdings Count | Holding 712
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$389,718
Number of Holdings
712
Weighted Average Maturity
37 Days
Seven-Day Yield (with waivers)
3.49%
Seven-Day Yield (without waivers)
3.48%
Seven-Day Effective Yield (with waivers)
3.55%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Prime Advantage Money Fund - Ultra Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Prime Advantage Money Fund
Class Name Ultra Shares
Trading Symbol SNAXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Prime Advantage Money Fund, Ultra Shares*
$10
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 10 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 389,718,000,000
Holdings Count | Holding 712
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$389,718
Number of Holdings
712
Weighted Average Maturity
37 Days
Seven-Day Yield (with waivers)
3.64%
Seven-Day Yield (without waivers)
3.63%
Seven-Day Effective Yield (with waivers)
3.70%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Government Money Fund - Sweep Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Government Money Fund
Class Name Sweep Shares
Trading Symbol SWGXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
 
 
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Government Money Fund, Sweep Shares*
$22
0.44%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 22 [1]
Expense Ratio, Percent 0.44% [1],[2]
Net Assets $ 86,941,000,000
Holdings Count | Holding 288
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$86,941
Number of Holdings
288
Weighted Average Maturity
42 Days
Seven-Day Yield (with waivers)
3.27%
Seven-Day Yield (without waivers)
3.26%
Seven-Day Effective Yield (with waivers)
3.32%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Government Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Government Money Fund
Class Name Investor Shares
Trading Symbol SNVXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
 
 
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Government Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 86,941,000,000
Holdings Count | Holding 288
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$86,941
Number of Holdings
288
Weighted Average Maturity
42 Days
Seven-Day Yield (with waivers)
3.37%
Seven-Day Yield (without waivers)
3.36%
Seven-Day Effective Yield (with waivers)
3.42%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Government Money Fund - Ultra Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Government Money Fund
Class Name Ultra Shares
Trading Symbol SGUXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Government Money Fund, Ultra Shares*
$10
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 10 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 86,941,000,000
Holdings Count | Holding 288
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$86,941
Number of Holdings
288
Weighted Average Maturity
42 Days
Seven-Day Yield (with waivers)
3.52%
Seven-Day Yield (without waivers)
3.51%
Seven-Day Effective Yield (with waivers)
3.58%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab U.S. Treasury Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab U.S. Treasury Money Fund
Class Name Investor Shares
Trading Symbol SNSXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(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. Treasury Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 107,449,000,000
Holdings Count | Holding 75
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$107,449
Number of Holdings
75
Weighted Average Maturity
53 Days
Seven-Day Yield (with waivers)
3.38%
Seven-Day Yield (without waivers)
3.38%
Seven-Day Effective Yield (with waivers)
3.44%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab U.S. Treasury Money Fund - Ultra Shares [Member]  
Shareholder Report [Line Items]  
Fund Name Schwab U.S. Treasury Money Fund
Class Name Ultra Shares
Trading Symbol SUTXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months END
ED J
une 30, 2026
(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. Treasury Money Fund, Ultra Shares*
$10
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 10 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 107,449,000,000
Holdings Count | Holding 75
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$107,449
Number of Holdings
75
Weighted Average Maturity
53
Days
Seven-Day Yield (with waivers)
3.53
%
Seven-Day Yield (without waivers)
3.53%
Seven-Day Effective Yield (with waivers)
3.59%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Treasury Obligations Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Treasury Obligations Money Fund
Class Name Investor Shares
Trading Symbol SNOXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Treasury Obligations Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 71,495,000,000
Holdings Count | Holding 94
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$71,495
Number of Holdings
94
Weighted Average Maturity
43 Days
Seven-Day Yield (with waivers)
3.38%
Seven-Day Yield (without waivers)
3.38%
Seven-Day Effective Yield (with waivers)
3.44%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Treasury Obligations Money Fund - Ultra Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Treasury Obligations Money Fund
Class Name Ultra Shares
Trading Symbol SCOXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Treasury Obligations Money Fund, Ultra Shares*
$10
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 10 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 71,495,000,000
Holdings Count | Holding 94
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$71,495
Number of Holdings
94
Weighted Average Maturity
43 Days
Seven-Day Yield (with waivers)
3.53%
Seven-Day Yield (without waivers)
3.53%
Seven-Day Effective Yield (with waivers)
3.59%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Retirement Government Money Fund  
Shareholder Report [Line Items]  
Fund Name Schwab Retirement Government Money Fund
Class Name Schwab Retirement Government Money Fund
Trading Symbol SNRXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab Retirement Government Money Fund*
$10
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 10 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 928,000,000
Holdings Count | Holding 197
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$928
Number of Holdings
197
Weighted Average Maturity
39 Days
Seven-Day Yield (with waivers)
3.55%
Seven-Day Yield (without waivers)
3.50%
Seven-Day Effective Yield (with waivers)
3.61%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Municipal Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Municipal Money Fund
Class Name Investor Shares
Trading Symbol SWTXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(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 Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 18,900,000,000
Holdings Count | Holding 1,437
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$18,900
Number of Holdings
1,437
Weighted Average Maturity
32 Days
Seven-Day Yield (with waivers)
2.38%
Seven-Day Yield (without waivers)
2.37%
Seven-Day Effective Yield (with waivers)
2.41%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Largest Holdings [Text Block]
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab Municipal Money Fund - Ultra Shares  
Shareholder Report [Line Items]  
Fund Name Schwab Municipal Money Fund
Class Name Ultra Shares
Trading Symbol SWOXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(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 Money Fund, Ultra Shares*
$9
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 9 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 18,900,000,000
Holdings Count | Holding 1,437
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$18,900
Number of Holdings
1,437
Weighted Average Maturity
32 Days
Seven-Day Yield (with waivers)
2.53%
Seven-Day Yield (without waivers)
2.52%
Seven-Day Effective Yield (with waivers)
2.57%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Largest Holdings [Text Block]
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab AMT Tax-Free Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab AMT Tax-Free Money Fund
Class Name Investor Shares
Trading Symbol SWWXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab AMT Tax-Free Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 4,195,000,000
Holdings Count | Holding 751
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$4,195
Number of Holdings
751
Weighted Average Maturity
34 Days
Seven-Day Yield (with waivers)
2.37%
Seven-Day Yield (without waivers)
2.34%
Seven-Day Effective Yield (with waivers)
2.40%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Largest Holdings [Text Block]
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab AMT Tax-Free Money Fund - Ultra Shares  
Shareholder Report [Line Items]  
Fund Name Schwab AMT Tax-Free Money Fund
Class Name Ultra Shares
Trading Symbol SCTXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab AMT Tax-Free Money Fund, Ultra Shares*
$9
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 9 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 4,195,000,000
Holdings Count | Holding 751
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$4,195
Number of Holdings
751
Weighted Average Maturity
34 Days
Seven-Day Yield (with waivers)
2.52%
Seven-Day Yield (without waivers)
2.49%
Seven-Day Effective Yield (with waivers)
2.55%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Largest Holdings [Text Block]
Largest Holdings by State % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab California Municipal Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab California Municipal Money Fund
Class Name Investor Shares
Trading Symbol SWKXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab California Municipal Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 9,096,000,000
Holdings Count | Holding 468
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$9,096
Number of Holdings
468
Weighted Average Maturity
26 Days
Seven-Day Yield (with waivers)
2.11%
Seven-Day Yield (without waivers)
2.10%
Seven-Day Effective Yield (with waivers)
2.13%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab California Municipal Money Fund - Ultra Shares  
Shareholder Report [Line Items]  
Fund Name Schwab California Municipal Money Fund
Class Name Ultra Shares
Trading Symbol SCAXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
 
 
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab California Municipal Money Fund, Ultra Shares*
$9
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 9 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 9,096,000,000
Holdings Count | Holding 468
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$9,096
Number of Holdings
468
Weighted Average Maturity
26 Days
Seven-Day Yield (with waivers)
2.26%
Seven-Day Yield (without waivers)
2.25%
Seven-Day Effective Yield (with waivers)
2.28%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab New York Municipal Money Fund - Investor Shares  
Shareholder Report [Line Items]  
Fund Name Schwab New York Municipal Money Fund
Class Name Investor Shares
Trading Symbol SWYXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab New York Municipal Money Fund, Investor Shares*
$17
0.34%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 17 [1]
Expense Ratio, Percent 0.34% [1],[2]
Net Assets $ 3,207,000,000
Holdings Count | Holding 391
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$3,207
Number of Holdings
391
Weighted Average Maturity
33 Days
Seven-Day Yield (with waivers)
2.41%
Seven-Day Yield (without waivers)
2.39%
Seven-Day Effective Yield (with waivers)
2.44%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
Schwab New York Municipal Money Fund - Ultra Shares  
Shareholder Report [Line Items]  
Fund Name Schwab New York Municipal Money Fund
Class Name Ultra Shares
Trading Symbol SNYXX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the fund for the period of January 1, 2026, to June 30, 2026.
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/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/prospectus
Expenses [Text Block]
FUND COSTS FOR THE LAST six months ENDED June 30, 2026
(BASED ON A HYPOTHETICAL $10,000 INVESTMENT)
 
 
COSTS OF A
$10,000 INVESTMENT
COSTS PAID AS A
PERCENTAGE OF A
$10,000 INVESTMENT
Schwab New York Municipal Money Fund, Ultra Shares*
$9
0.19%
**
*
Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
**
Annualized.
Expenses Paid, Amount $ 9 [1]
Expense Ratio, Percent 0.19% [1],[2]
Net Assets $ 3,207,000,000
Holdings Count | Holding 391
Additional Fund Statistics [Text Block]
Statistics
 
Net Assets (millions)
$3,207
Number of Holdings
391
Weighted Average Maturity
33 Days
Seven-Day Yield (with waivers)
2.56%
Seven-Day Yield (without waivers)
2.54%
Seven-Day Effective Yield (with waivers)
2.59%
Holdings [Text Block]
Portfolio Composition by Security Type % of Investments
 
Portfolio Composition By Effective Maturity % of Investments
 
Portfolio holdings may have changed since the report date.
[1] Expenses were reduced by a contractual fee waiver in effect for so long as the investment adviser serves as adviser to the fund.
[2] Annualized.