v3.25.4
Shareholder Report, Holdings (Details)
Dec. 31, 2025
Schwab Monthly Income Fund - Target Payout | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Schwab Monthly Income Fund - Target Payout | Schwab U.S. Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.10%
Schwab Monthly Income Fund - Target Payout | Schwab International Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.20%
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 And Steers Preferred Securities And Income Fund, Inc., 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 7.00%
Schwab Monthly Income Fund - Target Payout | T Rowe Price Institutional Floating Rate Fund, Instutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Monthly Income Fund - Target Payout | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Schwab Monthly Income Fund - Target Payout | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.00%
Schwab Monthly Income Fund - Target Payout | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 31.00%
Schwab Monthly Income Fund - Target Payout | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.10%
Schwab Monthly Income Fund - Target Payout | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.20%
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 6.10%
Schwab Monthly Income Fund - Target Payout | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.60%
Schwab Monthly Income Fund - Target Payout | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
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 - Flexible Payout | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Schwab Monthly Income Fund - Flexible Payout | Schwab U.S. Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.20%
Schwab Monthly Income Fund - Flexible Payout | Schwab International Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.30%
Schwab Monthly Income Fund - Flexible Payout | Schwab High Yield Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Schwab Monthly Income Fund - Flexible Payout | Schwab 5-10 Year Corporate Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Schwab Monthly Income Fund - Flexible Payout | Cohen And Steers Preferred Securities And Income Fund, Inc., Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
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]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Monthly Income Fund - Flexible Payout | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.50%
Schwab Monthly Income Fund - Flexible Payout | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.00%
Schwab Monthly Income Fund - Flexible Payout | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 30.90%
Schwab Monthly Income Fund - Flexible Payout | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.20%
Schwab Monthly Income Fund - Flexible Payout | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.30%
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 6.10%
Schwab Monthly Income Fund - Flexible Payout | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.50%
Schwab Monthly Income Fund - Flexible Payout | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
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 - Income Payout | Schwab U.S. Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Schwab Monthly Income Fund - Income Payout | Schwab International Dividend Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.30%
Schwab Monthly Income Fund - Income Payout | Schwab High Yield Bond ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
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 And Steers Preferred Securities And Income Fund, Inc., 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 5.90%
Schwab Monthly Income Fund - Income Payout | T Rowe Price Institutional Floating Rate Fund, Instutional Class [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 3.50%
Schwab Monthly Income Fund - Income Payout | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 26.00%
Schwab Monthly Income Fund - Income Payout | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 44.00%
Schwab Monthly Income Fund - Income Payout | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.10%
Schwab Monthly Income Fund - Income Payout | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30%
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 6.00%
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 3.50%
Schwab Monthly Income Fund - Income Payout | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.10%
Schwab Monthly Income Fund - Income Payout | Fixed Income - High - Yield Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.00%