v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
Schwab Monthly Income Fund – Target Payout | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Schwab Monthly Income Fund – Target Payout | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.10%
Schwab Monthly Income Fund – Target Payout | Schwab U.S. Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.80%
Schwab Monthly Income Fund – Target Payout | Schwab International Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Schwab Monthly Income Fund – Target Payout | Schwab High Yield Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Schwab Monthly Income Fund – Target Payout | Schwab 5-10 Year Corporate Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Schwab Monthly Income Fund – Target Payout | Cohen & Steers Preferred Securities and Income Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
Schwab Monthly Income Fund – Target Payout | Schwab Long-Term U.S. Treasury ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Schwab Monthly Income Fund – Target Payout | T. Rowe Price Institutional Floating Rate Fund, Instutional Class [Member] [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Schwab Monthly Income Fund – Target Payout | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
Schwab Monthly Income Fund – Target Payout | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.10%
Schwab Monthly Income Fund – Target Payout | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.80%
Schwab Monthly Income Fund – Target Payout | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.80%
Schwab Monthly Income Fund – Target Payout | Fixed Income - High-Yield Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.00%
Schwab Monthly Income Fund – Target Payout | Fixed Income - Preferred [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab Monthly Income Fund – Target Payout | Fixed Income - Long-Term Government Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab Monthly Income Fund – Target Payout | Fixed Income - Floating Rate Loans [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.00%
Schwab Monthly Income Fund – Target Payout | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab Monthly Income Fund – Target Payout | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.30%
Schwab Monthly Income Fund – Flexible Payout | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Schwab Monthly Income Fund – Flexible Payout | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.20%
Schwab Monthly Income Fund – Flexible Payout | Schwab U.S. Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.70%
Schwab Monthly Income Fund – Flexible Payout | Schwab International Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Schwab Monthly Income Fund – Flexible Payout | Schwab High Yield Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
Schwab Monthly Income Fund – Flexible Payout | Schwab 5-10 Year Corporate Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Schwab Monthly Income Fund – Flexible Payout | Cohen & Steers Preferred Securities and Income Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Schwab Monthly Income Fund – Flexible Payout | Schwab Long-Term U.S. Treasury ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
Schwab Monthly Income Fund – Flexible Payout | T. Rowe Price Institutional Floating Rate Fund, Instutional Class [Member] [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Schwab Monthly Income Fund – Flexible Payout | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Schwab Monthly Income Fund – Flexible Payout | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.20%
Schwab Monthly Income Fund – Flexible Payout | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.70%
Schwab Monthly Income Fund – Flexible Payout | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.80%
Schwab Monthly Income Fund – Flexible Payout | Fixed Income - High-Yield Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.00%
Schwab Monthly Income Fund – Flexible Payout | Fixed Income - Preferred [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab Monthly Income Fund – Flexible Payout | Fixed Income - Long-Term Government Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab Monthly Income Fund – Flexible Payout | Fixed Income - Floating Rate Loans [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.00%
Schwab Monthly Income Fund – Flexible Payout | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.10%
Schwab Monthly Income Fund – Flexible Payout | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
Schwab Monthly Income Fund – Income Payout | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 26.10%
Schwab Monthly Income Fund – Income Payout | Schwab U.S. Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
Schwab Monthly Income Fund – Income Payout | Schwab International Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Schwab Monthly Income Fund – Income Payout | Schwab High Yield Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Schwab Monthly Income Fund – Income Payout | Schwab 5-10 Year Corporate Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Schwab Monthly Income Fund – Income Payout | Schwab 1-5 Year Corporate Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Schwab Monthly Income Fund – Income Payout | Cohen & Steers Preferred Securities and Income Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
Schwab Monthly Income Fund – Income Payout | Schwab Long-Term U.S. Treasury ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Monthly Income Fund – Income Payout | T. Rowe Price Institutional Floating Rate Fund, Instutional Class [Member] [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Schwab Monthly Income Fund – Income Payout | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Schwab Monthly Income Fund – Income Payout | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 35.20%
Schwab Monthly Income Fund – Income Payout | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.80%
Schwab Monthly Income Fund – Income Payout | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.90%
Schwab Monthly Income Fund – Income Payout | Fixed Income - High-Yield Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.10%
Schwab Monthly Income Fund – Income Payout | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.00%
Schwab Monthly Income Fund – Income Payout | Fixed Income - Preferred [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab Monthly Income Fund – Income Payout | Fixed Income - Long-Term Government Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.10%
Schwab Monthly Income Fund – Income Payout | Fixed Income - Floating Rate Loans [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
Schwab Monthly Income Fund – Income Payout | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.00%
Schwab Monthly Income Fund – Income Payout | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.90%