Shareholder Report, Holdings (Details)
|
Dec. 31, 2025 |
| Schwab Prime Advantage Money Fund - Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
74.80%
|
| Schwab Prime Advantage Money Fund - Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.10%
|
| Schwab Prime Advantage Money Fund - Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.80%
|
| Schwab Prime Advantage Money Fund - Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.50%
|
| Schwab Prime Advantage Money Fund - Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.80%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Repurchase Agreements Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.40%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Certificates of Deposit [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
22.40%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Financial Company Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
11.50%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Asset-Backed Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.80%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Non-Negotiable Time Deposits [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Non-U.S. Sovereign, Sub-Sovereign and Supra-National Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.90%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Other Instruments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.80%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Non-Financial Company Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.30%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
51.20%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Repurchase Agreements US Government Agency [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.40%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
24.40%
|
| Schwab Prime Advantage Money Fund - Investor Shares | Variable Rate Demand Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.70%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
74.80%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.10%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.80%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.50%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.80%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Repurchase Agreements Other [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.40%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Certificates of Deposit [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
22.40%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Financial Company Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
11.50%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Asset-Backed Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.80%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Non-Negotiable Time Deposits [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Non-U.S. Sovereign, Sub-Sovereign and Supra-National Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.90%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Other Instruments [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.80%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Non-Financial Company Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.30%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
51.20%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Repurchase Agreements US Government Agency [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.40%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
24.40%
|
| Schwab Prime Advantage Money Fund - Ultra Shares | Variable Rate Demand Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.70%
|
| Schwab Government Money Fund - Sweep Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
73.30%
|
| Schwab Government Money Fund - Sweep Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| Schwab Government Money Fund - Sweep Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.60%
|
| Schwab Government Money Fund - Sweep Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.60%
|
| Schwab Government Money Fund - Sweep Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.30%
|
| Schwab Government Money Fund - Sweep Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.20%
|
| Schwab Government Money Fund - Sweep Shares | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
55.90%
|
| Schwab Government Money Fund - Sweep Shares | Repurchase Agreements US Government Agency [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
32.10%
|
| Schwab Government Money Fund - Sweep Shares | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
23.80%
|
| Schwab Government Money Fund - Sweep Shares | U.S. Government Agency Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
34.80%
|
| Schwab Government Money Fund - Sweep Shares | Variable Rate Demand Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.20%
|
| Schwab Government Money Fund - Sweep Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.10%
|
| Schwab Government Money Fund - Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
73.30%
|
| Schwab Government Money Fund - Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| Schwab Government Money Fund - Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.60%
|
| Schwab Government Money Fund - Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.60%
|
| Schwab Government Money Fund - Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.30%
|
| Schwab Government Money Fund - Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.20%
|
| Schwab Government Money Fund - Investor Shares | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
55.90%
|
| Schwab Government Money Fund - Investor Shares | Repurchase Agreements US Government Agency [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
32.10%
|
| Schwab Government Money Fund - Investor Shares | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
23.80%
|
| Schwab Government Money Fund - Investor Shares | U.S. Government Agency Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
34.80%
|
| Schwab Government Money Fund - Investor Shares | Variable Rate Demand Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.20%
|
| Schwab Government Money Fund - Investor Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.10%
|
| Schwab Government Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
73.30%
|
| Schwab Government Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.00%
|
| Schwab Government Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.60%
|
| Schwab Government Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.60%
|
| Schwab Government Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.30%
|
| Schwab Government Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.20%
|
| Schwab Government Money Fund - Ultra Shares | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
55.90%
|
| Schwab Government Money Fund - Ultra Shares | Repurchase Agreements US Government Agency [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
32.10%
|
| Schwab Government Money Fund - Ultra Shares | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
23.80%
|
| Schwab Government Money Fund - Ultra Shares | U.S. Government Agency Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
34.80%
|
| Schwab Government Money Fund - Ultra Shares | Variable Rate Demand Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.20%
|
| Schwab Government Money Fund - Ultra Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.10%
|
| Schwab U.S. Treasury Money Fund - Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
18.70%
|
| Schwab U.S. Treasury Money Fund - Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
31.40%
|
| Schwab U.S. Treasury Money Fund - Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.10%
|
| Schwab U.S. Treasury Money Fund - Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.90%
|
| Schwab U.S. Treasury Money Fund - Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.20%
|
| Schwab U.S. Treasury Money Fund - Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.70%
|
| Schwab U.S. Treasury Money Fund - Investor Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
100.00%
|
| Schwab U.S. Treasury Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
18.70%
|
| Schwab U.S. Treasury Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
31.40%
|
| Schwab U.S. Treasury Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
27.10%
|
| Schwab U.S. Treasury Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.90%
|
| Schwab U.S. Treasury Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.20%
|
| Schwab U.S. Treasury Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.70%
|
| Schwab U.S. Treasury Money Fund - Ultra Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
100.00%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
79.20%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.90%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.10%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
62.90%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
62.90%
|
| Schwab Treasury Obligations Money Fund - Investor Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
37.10%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
79.20%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.10%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.40%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.90%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.10%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
62.90%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
62.90%
|
| Schwab Treasury Obligations Money Fund - Ultra Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
37.10%
|
| Schwab Retirement Government Money Fund | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
73.20%
|
| Schwab Retirement Government Money Fund | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.90%
|
| Schwab Retirement Government Money Fund | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.80%
|
| Schwab Retirement Government Money Fund | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.40%
|
| Schwab Retirement Government Money Fund | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.90%
|
| Schwab Retirement Government Money Fund | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.80%
|
| Schwab Retirement Government Money Fund | Repurchase Agreements [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
56.40%
|
| Schwab Retirement Government Money Fund | Repurchase Agreements US Government Agency [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
32.40%
|
| Schwab Retirement Government Money Fund | Repurchase Agreements US Treasury [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
24.00%
|
| Schwab Retirement Government Money Fund | U.S. Government Agency Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
34.30%
|
| Schwab Retirement Government Money Fund | Variable Rate Demand Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.30%
|
| Schwab Retirement Government Money Fund | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.00%
|
| Schwab Municipal Money Fund - Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
72.80%
|
| Schwab Municipal Money Fund - Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.80%
|
| Schwab Municipal Money Fund - Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.50%
|
| Schwab Municipal Money Fund - Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.70%
|
| Schwab Municipal Money Fund - Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.00%
|
| Schwab Municipal Money Fund - Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.20%
|
| Schwab Municipal Money Fund - Investor Shares | Multiple States |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Municipal Money Fund - Investor Shares | TEXAS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
22.30%
|
| Schwab Municipal Money Fund - Investor Shares | NEW YORK |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
12.20%
|
| Schwab Municipal Money Fund - Investor Shares | MASSACHUSETTS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.70%
|
| Schwab Municipal Money Fund - Investor Shares | FLORIDA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Municipal Money Fund - Investor Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| Schwab Municipal Money Fund - Investor Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
39.90%
|
| Schwab Municipal Money Fund - Investor Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.50%
|
| Schwab Municipal Money Fund - Investor Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| Schwab Municipal Money Fund - Investor Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.70%
|
| Schwab Municipal Money Fund - Investor Shares | Put Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.40%
|
| Schwab Municipal Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
72.80%
|
| Schwab Municipal Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.80%
|
| Schwab Municipal Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
6.50%
|
| Schwab Municipal Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.70%
|
| Schwab Municipal Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.00%
|
| Schwab Municipal Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.20%
|
| Schwab Municipal Money Fund - Ultra Shares | Multiple States |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Municipal Money Fund - Ultra Shares | TEXAS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
22.30%
|
| Schwab Municipal Money Fund - Ultra Shares | NEW YORK |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
12.20%
|
| Schwab Municipal Money Fund - Ultra Shares | MASSACHUSETTS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.70%
|
| Schwab Municipal Money Fund - Ultra Shares | FLORIDA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.30%
|
| Schwab Municipal Money Fund - Ultra Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.20%
|
| Schwab Municipal Money Fund - Ultra Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
39.90%
|
| Schwab Municipal Money Fund - Ultra Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
20.50%
|
| Schwab Municipal Money Fund - Ultra Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.30%
|
| Schwab Municipal Money Fund - Ultra Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.70%
|
| Schwab Municipal Money Fund - Ultra Shares | Put Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.40%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
72.50%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.40%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.10%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.20%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.50%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.30%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | TEXAS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
21.30%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | NEW YORK |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.70%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | MASSACHUSETTS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.00%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | FLORIDA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.40%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | ALABAMA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.50%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
32.60%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.40%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
19.70%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.00%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.50%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.00%
|
| Schwab AMT Tax-Free Money Fund - Investor Shares | Put Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.80%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
72.50%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.40%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.10%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.20%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.50%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.30%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | TEXAS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
21.30%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | NEW YORK |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
13.70%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | MASSACHUSETTS |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.00%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | FLORIDA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.40%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | ALABAMA |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
4.50%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
32.60%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
28.40%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
19.70%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
9.00%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.50%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.00%
|
| Schwab AMT Tax-Free Money Fund - Ultra Shares | Put Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.80%
|
| Schwab California Municipal Money Fund, Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
65.40%
|
| Schwab California Municipal Money Fund, Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.50%
|
| Schwab California Municipal Money Fund, Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
10.30%
|
| Schwab California Municipal Money Fund, Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.80%
|
| Schwab California Municipal Money Fund, Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.20%
|
| Schwab California Municipal Money Fund, Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| Schwab California Municipal Money Fund, Investor Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
12.50%
|
| Schwab California Municipal Money Fund, Investor Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
42.80%
|
| Schwab California Municipal Money Fund, Investor Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.20%
|
| Schwab California Municipal Money Fund, Investor Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.90%
|
| Schwab California Municipal Money Fund, Investor Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.10%
|
| Schwab California Municipal Money Fund, Investor Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.50%
|
| Schwab California Municipal Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
65.40%
|
| Schwab California Municipal Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.50%
|
| Schwab California Municipal Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
10.30%
|
| Schwab California Municipal Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
8.80%
|
| Schwab California Municipal Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
5.20%
|
| Schwab California Municipal Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
2.80%
|
| Schwab California Municipal Money Fund - Ultra Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
12.50%
|
| Schwab California Municipal Money Fund - Ultra Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
42.80%
|
| Schwab California Municipal Money Fund - Ultra Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
33.20%
|
| Schwab California Municipal Money Fund - Ultra Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.90%
|
| Schwab California Municipal Money Fund - Ultra Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.10%
|
| Schwab California Municipal Money Fund - Ultra Shares | U.S. Treasury Debt [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.50%
|
| Schwab New York Municipal Money Fund - Investor Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
87.40%
|
| Schwab New York Municipal Money Fund - Investor Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.00%
|
| Schwab New York Municipal Money Fund - Investor Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.40%
|
| Schwab New York Municipal Money Fund - Investor Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.40%
|
| Schwab New York Municipal Money Fund - Investor Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.40%
|
| Schwab New York Municipal Money Fund - Investor Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| Schwab New York Municipal Money Fund - Investor Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
41.00%
|
| Schwab New York Municipal Money Fund - Investor Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
36.40%
|
| Schwab New York Municipal Money Fund - Investor Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| Schwab New York Municipal Money Fund - Investor Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
11.50%
|
| Schwab New York Municipal Money Fund - Investor Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.00%
|
| Schwab New York Municipal Money Fund - Investor Shares | Put Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.10%
|
| Schwab New York Municipal Money Fund - Ultra Shares | 1 to 7 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
87.40%
|
| Schwab New York Municipal Money Fund - Ultra Shares | 8 to 30 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.00%
|
| Schwab New York Municipal Money Fund - Ultra Shares | 31 to 60 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.40%
|
| Schwab New York Municipal Money Fund - Ultra Shares | 61 to 90 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
0.40%
|
| Schwab New York Municipal Money Fund - Ultra Shares | 91 to 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.40%
|
| Schwab New York Municipal Money Fund - Ultra Shares | Over 180 Days [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.40%
|
| Schwab New York Municipal Money Fund - Ultra Shares | Tender Option Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
41.00%
|
| Schwab New York Municipal Money Fund - Ultra Shares | Variable Rate Demand Obligation [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
36.40%
|
| Schwab New York Municipal Money Fund - Ultra Shares | Commercial Paper [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
3.00%
|
| Schwab New York Municipal Money Fund - Ultra Shares | Fixed Rate Notes [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
11.50%
|
| Schwab New York Municipal Money Fund - Ultra Shares | Variable Rate Demand Preferred Shares [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
7.00%
|
| Schwab New York Municipal Money Fund - Ultra Shares | Put Bonds [Member] |
|
| Holdings [Line Items] |
|
| Percent of Total Investments |
1.10%
|