v3.26.1
Shareholder Report, Holdings (Details)
Apr. 30, 2026
Schwab International Opportunities Fund | Schwab Emerging Markets Equity ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Schwab International Opportunities Fund | MercadoLibre, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Schwab International Opportunities Fund | Novartis AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab International Opportunities Fund | ASML Holding NV [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Schwab International Opportunities Fund | AstraZeneca PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Schwab International Opportunities Fund | Samsung Electronics Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab International Opportunities Fund | Shell PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab International Opportunities Fund | Roche Holding AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab International Opportunities Fund | SK Hynix, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Schwab International Opportunities Fund | Taiwan Semiconductor Manufacturing Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Schwab International Opportunities Fund | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00% [1]
Schwab International Opportunities Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 18.80% [1]
Schwab International Opportunities Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.50% [1]
Schwab International Opportunities Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.40% [1]
Schwab International Opportunities Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.70% [1]
Schwab International Opportunities Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.90% [1]
Schwab International Opportunities Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.60% [1]
Schwab International Opportunities Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.20% [1]
Schwab International Opportunities Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50% [1]
Schwab International Opportunities Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40% [1]
Schwab International Opportunities Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.80% [1]
Schwab International Opportunities Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.30% [1]
Schwab International Opportunities Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.90% [1],[2]
Schwab International Opportunities Fund | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 7.10% [1]
Schwab International Opportunities Fund | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 3.70% [1]
Schwab International Opportunities Fund | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 10.60% [1]
Schwab International Opportunities Fund | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 17.70% [1]
Schwab International Opportunities Fund | Other Countries [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.50% [1]
Schwab International Opportunities Fund | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 6.90% [1]
Schwab International Opportunities Fund | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 6.80% [1]
Schwab International Opportunities Fund | CANADA  
Holdings [Line Items]  
Percent of Total Investments 6.70% [1]
Schwab International Opportunities Fund | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 4.00% [1]
Schwab International Opportunities Fund | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 6.60% [1]
Schwab International Opportunities Fund | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 4.40% [1]
Schwab International Opportunities Fund | CHINA  
Holdings [Line Items]  
Percent of Total Investments 2.60% [1]
Schwab International Opportunities Fund | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 3.40% [1]
Schwab Core Equity Fund | Caterpillar, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Schwab Core Equity Fund | Fidelity National Information Services, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Schwab Core Equity Fund | NVIDIA Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Schwab Core Equity Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Schwab Core Equity Fund | Apple, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Schwab Core Equity Fund | Broadcom, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Schwab Core Equity Fund | Microsoft Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Schwab Core Equity Fund | Amazon.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Schwab Core Equity Fund | Meta Platforms, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Schwab Core Equity Fund | Eli Lilly & Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab Core Equity Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.80%
Schwab Core Equity Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.00%
Schwab Core Equity Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 38.70%
Schwab Core Equity Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.60%
Schwab Core Equity Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.70%
Schwab Core Equity Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.40%
Schwab Core Equity Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
Schwab Core Equity Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
Schwab Core Equity Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.70%
Schwab Core Equity Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.50%
Schwab Core Equity Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.60%
Schwab Core Equity Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30% [2]
Schwab Dividend Equity Fund | Morgan Stanley [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Schwab Dividend Equity Fund | Walmart, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Schwab Dividend Equity Fund | JPMorgan Chase & Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Dividend Equity Fund | Exxon Mobil Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Dividend Equity Fund | Coca-Cola Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Schwab Dividend Equity Fund | Philip Morris International, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Schwab Dividend Equity Fund | Duke Energy Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab Dividend Equity Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Schwab Dividend Equity Fund | Broadcom, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Schwab Dividend Equity Fund | Johnson & Johnson [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab Dividend Equity Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.10%
Schwab Dividend Equity Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.40%
Schwab Dividend Equity Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.90%
Schwab Dividend Equity Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.70%
Schwab Dividend Equity Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.30%
Schwab Dividend Equity Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.00%
Schwab Dividend Equity Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60%
Schwab Dividend Equity Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.70%
Schwab Dividend Equity Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.10%
Schwab Dividend Equity Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.20%
Schwab Dividend Equity Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.00%
Schwab Large-Cap Growth Fund | NVIDIA Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Schwab Large-Cap Growth Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
Schwab Large-Cap Growth Fund | Apple, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Schwab Large-Cap Growth Fund | Broadcom, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
Schwab Large-Cap Growth Fund | Microsoft Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Schwab Large-Cap Growth Fund | Amazon.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Schwab Large-Cap Growth Fund | Meta Platforms, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Schwab Large-Cap Growth Fund | Tesla, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Schwab Large-Cap Growth Fund | Lam Research Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab Large-Cap Growth Fund | Eli Lilly & Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Schwab Large-Cap Growth Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.00%
Schwab Large-Cap Growth Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.70%
Schwab Large-Cap Growth Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 48.50%
Schwab Large-Cap Growth Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.80%
Schwab Large-Cap Growth Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.80%
Schwab Large-Cap Growth Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
Schwab Large-Cap Growth Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.10%
Schwab Large-Cap Growth Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.70%
Schwab Small-Cap Equity Fund | Bloom Energy Corp., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Schwab Small-Cap Equity Fund | Associated Banc-Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Schwab Small-Cap Equity Fund | Axos Financial, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Schwab Small-Cap Equity Fund | International Bancshares Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Schwab Small-Cap Equity Fund | Credo Technology Group Holding Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Schwab Small-Cap Equity Fund | Enova International, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab Small-Cap Equity Fund | Fabrinet [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab Small-Cap Equity Fund | Outfront Media, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab Small-Cap Equity Fund | Comfort Systems USA, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab Small-Cap Equity Fund | EnerSys [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab Small-Cap Equity Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.60% [1]
Schwab Small-Cap Equity Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 17.80% [1]
Schwab Small-Cap Equity Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.70% [1]
Schwab Small-Cap Equity Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.20% [1]
Schwab Small-Cap Equity Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.40% [1]
Schwab Small-Cap Equity Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.60% [1]
Schwab Small-Cap Equity Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00% [1]
Schwab Small-Cap Equity Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.90% [1]
Schwab Small-Cap Equity Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.60% [1]
Schwab Small-Cap Equity Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.50% [1]
Schwab Small-Cap Equity Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60% [1]
Schwab Small-Cap Equity Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [1],[2]
Schwab Health Care Fund | Eli Lilly & Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Schwab Health Care Fund | Johnson & Johnson [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Schwab Health Care Fund | AbbVie, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Schwab Health Care Fund | Merck & Co., Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Schwab Health Care Fund | Gilead Sciences, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Schwab Health Care Fund | UnitedHealth Group, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Schwab Health Care Fund | Novartis AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Schwab Health Care Fund | Medtronic PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Schwab Health Care Fund | Stryker Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab Health Care Fund | Amgen, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab Health Care Fund | Pharmaceuticals [Member]  
Holdings [Line Items]  
Percent of Total Investments 42.10%
Schwab Health Care Fund | Biotechnology [Member]  
Holdings [Line Items]  
Percent of Total Investments 22.50%
Schwab Health Care Fund | Health Care Equipment [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.60%
Schwab Health Care Fund | Life Sciences Tools & Services [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.50%
Schwab Health Care Fund | Managed Health Care [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
Schwab Health Care Fund | Health Care Distributors [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.80%
Schwab Health Care Fund | Health Care Services [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
Schwab Health Care Fund | Health Care Facilities [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.10%
Schwab Health Care Fund | Health Care Supplies [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
Schwab Health Care Fund | Data Processing & Outsourced Services [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10%
Schwab Health Care Fund | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 81.80%
Schwab Health Care Fund | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 5.50%
Schwab Health Care Fund | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 4.80%
Schwab Health Care Fund | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 3.10%
Schwab Health Care Fund | Other Countries [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.80%
Schwab International Core Equity Fund | Novartis AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab International Core Equity Fund | BNP Paribas SA [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Schwab International Core Equity Fund | ABB Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Schwab International Core Equity Fund | Deutsche Telekom AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Schwab International Core Equity Fund | ASML Holding NV [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Schwab International Core Equity Fund | Mitsubishi UFJ Financial Group, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Schwab International Core Equity Fund | Shell PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab International Core Equity Fund | HSBC Holdings PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab International Core Equity Fund | Roche Holding AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Schwab International Core Equity Fund | Taiwan Semiconductor Manufacturing Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Schwab International Core Equity Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.60%
Schwab International Core Equity Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.00%
Schwab International Core Equity Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.60%
Schwab International Core Equity Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 22.70%
Schwab International Core Equity Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab International Core Equity Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.40%
Schwab International Core Equity Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
Schwab International Core Equity Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
Schwab International Core Equity Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.40%
Schwab International Core Equity Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
Schwab International Core Equity Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.50%
Schwab International Core Equity Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.50% [2]
Schwab International Core Equity Fund | UNITED STATES  
Holdings [Line Items]  
Percent of Total Investments 2.50%
Schwab International Core Equity Fund | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 9.30%
Schwab International Core Equity Fund | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 13.00%
Schwab International Core Equity Fund | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 19.90%
Schwab International Core Equity Fund | Other Countries [Member]  
Holdings [Line Items]  
Percent of Total Investments 17.30%
Schwab International Core Equity Fund | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 7.10%
Schwab International Core Equity Fund | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 4.00%
Schwab International Core Equity Fund | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 2.70%
Schwab International Core Equity Fund | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 5.30%
Schwab International Core Equity Fund | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.30%
Schwab International Core Equity Fund | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.90%
Schwab International Core Equity Fund | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 2.70%
Schwab S&P 500 Index Fund | NVIDIA Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Schwab S&P 500 Index Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Schwab S&P 500 Index Fund | Apple, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Schwab S&P 500 Index Fund | Broadcom, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Schwab S&P 500 Index Fund | Microsoft Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Schwab S&P 500 Index Fund | Amazon.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Schwab S&P 500 Index Fund | Meta Platforms, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Schwab S&P 500 Index Fund | Tesla, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Schwab S&P 500 Index Fund | Berkshire Hathaway, Inc., Class B [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Schwab S&P 500 Index Fund | Alphabet, Inc., Class C [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Schwab S&P 500 Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.80% [1]
Schwab S&P 500 Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.50% [1]
Schwab S&P 500 Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 35.00% [1]
Schwab S&P 500 Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.00% [1]
Schwab S&P 500 Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.00% [1]
Schwab S&P 500 Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.50% [1]
Schwab S&P 500 Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00% [1]
Schwab S&P 500 Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.90% [1]
Schwab S&P 500 Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.40% [1]
Schwab S&P 500 Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.00% [1]
Schwab S&P 500 Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.90% [1]
Schwab S&P 500 Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.00% [1],[2],[3]
Schwab Small-Cap Index Fund | Bloom Energy Corp., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab Small-Cap Index Fund | Credo Technology Group Holding Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab Small-Cap Index Fund | Fabrinet [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Schwab Small-Cap Index Fund | Coeur Mining, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Schwab Small-Cap Index Fund | Nextpower, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Small-Cap Index Fund | IonQ, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Small-Cap Index Fund | Sterling Infrastructure, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Small-Cap Index Fund | Advanced Energy Industries, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Schwab Small-Cap Index Fund | EchoStar Corp., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Small-Cap Index Fund | TTM Technologies, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Small-Cap Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.00% [1]
Schwab Small-Cap Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.10% [1]
Schwab Small-Cap Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.10% [1]
Schwab Small-Cap Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.40% [1]
Schwab Small-Cap Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.00% [1]
Schwab Small-Cap Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.20% [1]
Schwab Small-Cap Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.60% [1]
Schwab Small-Cap Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.10% [1]
Schwab Small-Cap Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.80% [1]
Schwab Small-Cap Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60% [1]
Schwab Small-Cap Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70% [1]
Schwab Small-Cap Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40% [1],[2]
Schwab Total Stock Market Index Fund | NVIDIA Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Schwab Total Stock Market Index Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Schwab Total Stock Market Index Fund | Apple, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Schwab Total Stock Market Index Fund | Broadcom, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Schwab Total Stock Market Index Fund | Microsoft Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Schwab Total Stock Market Index Fund | Amazon.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Total Stock Market Index Fund | Meta Platforms, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab Total Stock Market Index Fund | Tesla, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Schwab Total Stock Market Index Fund | Berkshire Hathaway, Inc., Class B [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Schwab Total Stock Market Index Fund | Alphabet, Inc., Class C [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab Total Stock Market Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.20% [1]
Schwab Total Stock Market Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.00% [1]
Schwab Total Stock Market Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 33.10% [1]
Schwab Total Stock Market Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.40% [1]
Schwab Total Stock Market Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.90% [1]
Schwab Total Stock Market Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.70% [1]
Schwab Total Stock Market Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20% [1]
Schwab Total Stock Market Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.30% [1]
Schwab Total Stock Market Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.30% [1]
Schwab Total Stock Market Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.10% [1]
Schwab Total Stock Market Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.70% [1]
Schwab Total Stock Market Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [1],[2]
Schwab U.S. Large-Cap Growth Index Fund | NVIDIA Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Schwab U.S. Large-Cap Growth Index Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Schwab U.S. Large-Cap Growth Index Fund | Apple, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Schwab U.S. Large-Cap Growth Index Fund | Broadcom, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Schwab U.S. Large-Cap Growth Index Fund | Microsoft Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Schwab U.S. Large-Cap Growth Index Fund | Amazon.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Schwab U.S. Large-Cap Growth Index Fund | Meta Platforms, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Schwab U.S. Large-Cap Growth Index Fund | Tesla, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Schwab U.S. Large-Cap Growth Index Fund | Eli Lilly & Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Schwab U.S. Large-Cap Growth Index Fund | Alphabet, Inc., Class C [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Schwab U.S. Large-Cap Growth Index Fund | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70% [1]
Schwab U.S. Large-Cap Growth Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.50% [1]
Schwab U.S. Large-Cap Growth Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00% [1]
Schwab U.S. Large-Cap Growth Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 50.00% [1]
Schwab U.S. Large-Cap Growth Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.50% [1]
Schwab U.S. Large-Cap Growth Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.00% [1]
Schwab U.S. Large-Cap Growth Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40% [1]
Schwab U.S. Large-Cap Growth Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30% [1]
Schwab U.S. Large-Cap Growth Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40% [1]
Schwab U.S. Large-Cap Growth Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30% [1]
Schwab U.S. Large-Cap Growth Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.80% [1]
Schwab U.S. Large-Cap Growth Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.70% [1]
Schwab U.S. Large-Cap Growth Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40% [1],[2]
Schwab U.S. Large-Cap Value Index Fund | Walmart, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Schwab U.S. Large-Cap Value Index Fund | JPMorgan Chase & Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab U.S. Large-Cap Value Index Fund | Exxon Mobil Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Schwab U.S. Large-Cap Value Index Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Schwab U.S. Large-Cap Value Index Fund | Amazon.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Schwab U.S. Large-Cap Value Index Fund | Johnson & Johnson [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Schwab U.S. Large-Cap Value Index Fund | Berkshire Hathaway, Inc., Class B [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Schwab U.S. Large-Cap Value Index Fund | Micron Technology, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Schwab U.S. Large-Cap Value Index Fund | Intel Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Schwab U.S. Large-Cap Value Index Fund | Alphabet, Inc., Class C [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab U.S. Large-Cap Value Index Fund | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [1]
Schwab U.S. Large-Cap Value Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.30% [1]
Schwab U.S. Large-Cap Value Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.80% [1]
Schwab U.S. Large-Cap Value Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.10% [1]
Schwab U.S. Large-Cap Value Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.40% [1]
Schwab U.S. Large-Cap Value Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00% [1]
Schwab U.S. Large-Cap Value Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.90% [1]
Schwab U.S. Large-Cap Value Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10% [1]
Schwab U.S. Large-Cap Value Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.00% [1]
Schwab U.S. Large-Cap Value Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.40% [1]
Schwab U.S. Large-Cap Value Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.40% [1]
Schwab U.S. Large-Cap Value Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.20% [1]
Schwab U.S. Large-Cap Value Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30% [1],[2]
Schwab U.S. Mid-Cap Index Fund | Sandisk Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Schwab U.S. Mid-Cap Index Fund | Western Digital Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Schwab U.S. Mid-Cap Index Fund | Corning, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab U.S. Mid-Cap Index Fund | Vertiv Holdings Co., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab U.S. Mid-Cap Index Fund | Quanta Services, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Schwab U.S. Mid-Cap Index Fund | Howmet Aerospace, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Schwab U.S. Mid-Cap Index Fund | Bank of New York Mellon Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Schwab U.S. Mid-Cap Index Fund | Cummins, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Schwab U.S. Mid-Cap Index Fund | Valero Energy Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Schwab U.S. Mid-Cap Index Fund | Monolithic Power Systems, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Schwab U.S. Mid-Cap Index Fund | Investment Companies [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.10% [1]
Schwab U.S. Mid-Cap Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.30% [1]
Schwab U.S. Mid-Cap Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.50% [1]
Schwab U.S. Mid-Cap Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.80% [1]
Schwab U.S. Mid-Cap Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.60% [1]
Schwab U.S. Mid-Cap Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.40% [1]
Schwab U.S. Mid-Cap Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.10% [1]
Schwab U.S. Mid-Cap Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.20% [1]
Schwab U.S. Mid-Cap Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.80% [1]
Schwab U.S. Mid-Cap Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.10% [1]
Schwab U.S. Mid-Cap Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.40% [1]
Schwab U.S. Mid-Cap Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.30% [1]
Schwab U.S. Mid-Cap Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40% [1],[2]
Schwab International Index Fund | Novartis AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Schwab International Index Fund | ASML Holding NV [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab International Index Fund | AstraZeneca PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Schwab International Index Fund | Nestle SA [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Schwab International Index Fund | Siemens AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab International Index Fund | Commonwealth Bank of Australia [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab International Index Fund | Mitsubishi UFJ Financial Group, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab International Index Fund | Shell PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Schwab International Index Fund | HSBC Holdings PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Schwab International Index Fund | Roche Holding AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Schwab International Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.70% [1]
Schwab International Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.40% [1]
Schwab International Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.50% [1]
Schwab International Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.70% [1]
Schwab International Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.20% [1]
Schwab International Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.00% [1]
Schwab International Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.10% [1]
Schwab International Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80% [1]
Schwab International Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10% [1]
Schwab International Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10% [1]
Schwab International Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.80% [1]
Schwab International Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60% [1],[2]
Schwab International Index Fund | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 9.20% [1]
Schwab International Index Fund | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 14.80% [1]
Schwab International Index Fund | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 23.00% [1]
Schwab International Index Fund | Other Countries [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30% [1]
Schwab International Index Fund | ITALY  
Holdings [Line Items]  
Percent of Total Investments 3.30% [1]
Schwab International Index Fund | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 5.30% [1]
Schwab International Index Fund | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 3.80% [1]
Schwab International Index Fund | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 6.70% [1]
Schwab International Index Fund | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 10.00% [1]
Schwab International Index Fund | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 9.00% [1]
Schwab International Index Fund | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.60% [1]
Schwab Fundamental U.S. Large Company Index Fund | JPMorgan Chase & Co. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Schwab Fundamental U.S. Large Company Index Fund | Exxon Mobil Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Schwab Fundamental U.S. Large Company Index Fund | Alphabet, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Schwab Fundamental U.S. Large Company Index Fund | Apple, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Fundamental U.S. Large Company Index Fund | Microsoft Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Schwab Fundamental U.S. Large Company Index Fund | Amazon.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab Fundamental U.S. Large Company Index Fund | UnitedHealth Group, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Schwab Fundamental U.S. Large Company Index Fund | Intel Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Schwab Fundamental U.S. Large Company Index Fund | Alphabet, Inc., Class C [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Schwab Fundamental U.S. Large Company Index Fund | Chevron Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Schwab Fundamental U.S. Large Company Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.70% [1]
Schwab Fundamental U.S. Large Company Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.90% [1]
Schwab Fundamental U.S. Large Company Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 18.10% [1]
Schwab Fundamental U.S. Large Company Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.40% [1]
Schwab Fundamental U.S. Large Company Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.80% [1]
Schwab Fundamental U.S. Large Company Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.10% [1]
Schwab Fundamental U.S. Large Company Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10% [1]
Schwab Fundamental U.S. Large Company Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.60% [1]
Schwab Fundamental U.S. Large Company Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.20% [1]
Schwab Fundamental U.S. Large Company Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.20% [1]
Schwab Fundamental U.S. Large Company Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.40% [1]
Schwab Fundamental U.S. Large Company Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50% [1],[2]
Schwab Fundamental U.S. Small Company Index Fund | Comfort Systems USA, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Schwab Fundamental U.S. Small Company Index Fund | Lumentum Holdings, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab Fundamental U.S. Small Company Index Fund | Amkor Technology, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Fundamental U.S. Small Company Index Fund | Coherent Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Fundamental U.S. Small Company Index Fund | Viasat, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Fundamental U.S. Small Company Index Fund | MKS, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Schwab Fundamental U.S. Small Company Index Fund | EchoStar Corp., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Schwab Fundamental U.S. Small Company Index Fund | TTM Technologies, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Schwab Fundamental U.S. Small Company Index Fund | Compass, Inc., Class A [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Schwab Fundamental U.S. Small Company Index Fund | Tronox Holdings PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Schwab Fundamental U.S. Small Company Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 19.90% [1]
Schwab Fundamental U.S. Small Company Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.60% [1]
Schwab Fundamental U.S. Small Company Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 13.80% [1]
Schwab Fundamental U.S. Small Company Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.80% [1]
Schwab Fundamental U.S. Small Company Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.10% [1]
Schwab Fundamental U.S. Small Company Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.30% [1]
Schwab Fundamental U.S. Small Company Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.50% [1]
Schwab Fundamental U.S. Small Company Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.50% [1]
Schwab Fundamental U.S. Small Company Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.80% [1]
Schwab Fundamental U.S. Small Company Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.30% [1]
Schwab Fundamental U.S. Small Company Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.60% [1]
Schwab Fundamental U.S. Small Company Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80% [1],[2]
Schwab Fundamental International Equity Index Fund | Samsung Electronics Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Fundamental International Equity Index Fund | Shell PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Schwab Fundamental International Equity Index Fund | Total Energies SE [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Schwab Fundamental International Equity Index Fund | Glencore PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Schwab Fundamental International Equity Index Fund | BP PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Schwab Fundamental International Equity Index Fund | BHP Group Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Schwab Fundamental International Equity Index Fund | HSBC Holdings PLC [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Schwab Fundamental International Equity Index Fund | Toyota Motor Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Schwab Fundamental International Equity Index Fund | Roche Holding AG [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Schwab Fundamental International Equity Index Fund | SK Hynix, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Schwab Fundamental International Equity Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.00% [1]
Schwab Fundamental International Equity Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.20% [1]
Schwab Fundamental International Equity Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.10% [1]
Schwab Fundamental International Equity Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.90% [1]
Schwab Fundamental International Equity Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.80% [1]
Schwab Fundamental International Equity Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.00% [1]
Schwab Fundamental International Equity Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.80% [1]
Schwab Fundamental International Equity Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80% [1]
Schwab Fundamental International Equity Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.00% [1]
Schwab Fundamental International Equity Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.70% [1]
Schwab Fundamental International Equity Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00% [1]
Schwab Fundamental International Equity Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70% [1],[2]
Schwab Fundamental International Equity Index Fund | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 4.50% [1]
Schwab Fundamental International Equity Index Fund | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 13.60% [1]
Schwab Fundamental International Equity Index Fund | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 22.30% [1]
Schwab Fundamental International Equity Index Fund | Other Countries [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.00% [1]
Schwab Fundamental International Equity Index Fund | NETHERLANDS  
Holdings [Line Items]  
Percent of Total Investments 3.00% [1]
Schwab Fundamental International Equity Index Fund | SPAIN  
Holdings [Line Items]  
Percent of Total Investments 2.80% [1]
Schwab Fundamental International Equity Index Fund | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 9.70% [1]
Schwab Fundamental International Equity Index Fund | CANADA  
Holdings [Line Items]  
Percent of Total Investments 8.80% [1]
Schwab Fundamental International Equity Index Fund | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 4.80% [1]
Schwab Fundamental International Equity Index Fund | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 8.00% [1]
Schwab Fundamental International Equity Index Fund | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 7.50% [1]
Schwab Fundamental International Small Equity Index Fund | Daewoo Engineering & Construction Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Schwab Fundamental International Small Equity Index Fund | Ibiden Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Schwab Fundamental International Small Equity Index Fund | Tower Semiconductor Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Schwab Fundamental International Small Equity Index Fund | LS Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Schwab Fundamental International Small Equity Index Fund | Celestica, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Schwab Fundamental International Small Equity Index Fund | DL E&C Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Schwab Fundamental International Small Equity Index Fund | Samsung E&A Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Schwab Fundamental International Small Equity Index Fund | Baytex Energy Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Schwab Fundamental International Small Equity Index Fund | Constellium SE [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Schwab Fundamental International Small Equity Index Fund | GS Engineering & Construction Corp. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Schwab Fundamental International Small Equity Index Fund | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 25.40% [1]
Schwab Fundamental International Small Equity Index Fund | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.50% [1]
Schwab Fundamental International Small Equity Index Fund | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.60% [1]
Schwab Fundamental International Small Equity Index Fund | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.70% [1]
Schwab Fundamental International Small Equity Index Fund | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.30% [1]
Schwab Fundamental International Small Equity Index Fund | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.90% [1]
Schwab Fundamental International Small Equity Index Fund | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.60% [1]
Schwab Fundamental International Small Equity Index Fund | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.60% [1]
Schwab Fundamental International Small Equity Index Fund | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.00% [1]
Schwab Fundamental International Small Equity Index Fund | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.50% [1]
Schwab Fundamental International Small Equity Index Fund | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.80% [1]
Schwab Fundamental International Small Equity Index Fund | Shortterm Investments [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.10% [1],[2]
Schwab Fundamental International Small Equity Index Fund | SWITZERLAND  
Holdings [Line Items]  
Percent of Total Investments 3.30% [1]
Schwab Fundamental International Small Equity Index Fund | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Total Investments 7.40% [1]
Schwab Fundamental International Small Equity Index Fund | JAPAN  
Holdings [Line Items]  
Percent of Total Investments 29.70% [1]
Schwab Fundamental International Small Equity Index Fund | Other Countries [Member]  
Holdings [Line Items]  
Percent of Total Investments 22.20% [1]
Schwab Fundamental International Small Equity Index Fund | KOREA, REPUBLIC OF  
Holdings [Line Items]  
Percent of Total Investments 10.20% [1]
Schwab Fundamental International Small Equity Index Fund | CANADA  
Holdings [Line Items]  
Percent of Total Investments 9.00% [1]
Schwab Fundamental International Small Equity Index Fund | AUSTRALIA  
Holdings [Line Items]  
Percent of Total Investments 4.90% [1]
Schwab Fundamental International Small Equity Index Fund | FRANCE  
Holdings [Line Items]  
Percent of Total Investments 4.00% [1]
Schwab Fundamental International Small Equity Index Fund | GERMANY  
Holdings [Line Items]  
Percent of Total Investments 3.50% [1]
Schwab Fundamental International Small Equity Index Fund | SWEDEN  
Holdings [Line Items]  
Percent of Total Investments 3.20% [1]
Schwab Fundamental International Small Equity Index Fund | HONG KONG  
Holdings [Line Items]  
Percent of Total Investments 2.60% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Taiwan Semiconductor Manufacturing Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Fundamental Emerging Markets Equity Index Fund  | Vale SA [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Schwab Fundamental Emerging Markets Equity Index Fund  | Petroleo Brasileiro SA - Petrobras - Preferred Stock [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Schwab Fundamental Emerging Markets Equity Index Fund  | Alibaba Group Holding Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Schwab Fundamental Emerging Markets Equity Index Fund  | Petroleo Brasileiro SA - Petrobras - Common Stock [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Schwab Fundamental Emerging Markets Equity Index Fund  | Hon Hai Precision Industry Co. Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab Fundamental Emerging Markets Equity Index Fund  | China Construction Bank Corp., H Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Schwab Fundamental Emerging Markets Equity Index Fund  | Tencent Holdings Ltd. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Schwab Fundamental Emerging Markets Equity Index Fund  | JD.com, Inc. [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Schwab Fundamental Emerging Markets Equity Index Fund  | PetroChina Co. Ltd., H Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Schwab Fundamental Emerging Markets Equity Index Fund  | Industrial Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.70% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Healthcare Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Information Technology Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 18.70% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Financials [Member]  
Holdings [Line Items]  
Percent of Total Investments 23.50% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Consumer Discretionary Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.10% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Energy Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.00% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Materials Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 14.10% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Real Estate Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.50% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Utilities Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.90% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Communications Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.70% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Consumer Staples Sector [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.30% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | Other Countries [Member]  
Holdings [Line Items]  
Percent of Total Investments 12.60% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | CHINA  
Holdings [Line Items]  
Percent of Total Investments 30.30% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | TAIWAN  
Holdings [Line Items]  
Percent of Total Investments 21.60% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | BRAZIL  
Holdings [Line Items]  
Percent of Total Investments 14.60% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | INDIA  
Holdings [Line Items]  
Percent of Total Investments 9.00% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | SOUTH AFRICA  
Holdings [Line Items]  
Percent of Total Investments 5.30% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | MEXICO  
Holdings [Line Items]  
Percent of Total Investments 3.80% [1]
Schwab Fundamental Emerging Markets Equity Index Fund  | THAILAND  
Holdings [Line Items]  
Percent of Total Investments 2.80% [1]
Schwab Balanced Fund | Schwab Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 26.60% [4]
Schwab Balanced Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.20% [4]
Schwab Balanced Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.90% [4]
Schwab Balanced Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.80% [4]
Schwab Balanced Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 36.50% [4]
Schwab Balanced Fund | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30% [4]
Schwab Balanced Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 41.90%
Schwab Balanced Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.00%
Schwab Balanced Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 36.60%
Schwab Balanced Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.80%
Schwab Balanced Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.70%
Schwab MarketTrack All Equity Portfolio™ | Schwab Fundamental Emerging Markets Equity Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Schwab MarketTrack All Equity Portfolio™ | Schwab Fundamental U.S. Small Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Schwab MarketTrack All Equity Portfolio™ | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 24.00%
Schwab MarketTrack All Equity Portfolio™ | Schwab International Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.10%
Schwab MarketTrack All Equity Portfolio™ | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Schwab MarketTrack All Equity Portfolio™ | Schwab U.S. Large-Cap Growth Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
Schwab MarketTrack All Equity Portfolio™ | Schwab Fundamental International Equity Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Schwab MarketTrack All Equity Portfolio™ | Schwab Small-Cap Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Schwab MarketTrack All Equity Portfolio™ | Schwab U.S. REIT ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Schwab MarketTrack All Equity Portfolio™ | Schwab Fundamental International Small Equity Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Schwab MarketTrack All Equity Portfolio™ | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 50.10%
Schwab MarketTrack All Equity Portfolio™ | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 28.30%
Schwab MarketTrack All Equity Portfolio™ | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.90%
Schwab MarketTrack All Equity Portfolio™ | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.70%
Schwab MarketTrack All Equity Portfolio™ | Real Estate - U.S. REITs [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.00%
Schwab MarketTrack Growth Portfolio™ | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.80%
Schwab MarketTrack Growth Portfolio™ | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.00%
Schwab MarketTrack Growth Portfolio™ | Schwab International Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
Schwab MarketTrack Growth Portfolio™ | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Schwab MarketTrack Growth Portfolio™ | Schwab U.S. Large-Cap Growth Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Schwab MarketTrack Growth Portfolio™ | Schwab Fundamental International Equity Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Schwab MarketTrack Growth Portfolio™ | Schwab Small-Cap Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Schwab MarketTrack Growth Portfolio™ | Schwab U.S. REIT ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Schwab MarketTrack Growth Portfolio™ | Schwab Fundamental International Small Equity Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Schwab MarketTrack Growth Portfolio™ | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Schwab MarketTrack Growth Portfolio™ | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 43.70%
Schwab MarketTrack Growth Portfolio™ | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.80%
Schwab MarketTrack Growth Portfolio™ | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.10%
Schwab MarketTrack Growth Portfolio™ | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.00%
Schwab MarketTrack Growth Portfolio™ | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.10%
Schwab MarketTrack Growth Portfolio™ | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.30%
Schwab MarketTrack Growth Portfolio™ | Real Estate - U.S. REITs [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.00%
Schwab MarketTrack Balanced Portfolio™ | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.60%
Schwab MarketTrack Balanced Portfolio™ | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 30.50%
Schwab MarketTrack Balanced Portfolio™ | Schwab International Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Schwab MarketTrack Balanced Portfolio™ | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Schwab MarketTrack Balanced Portfolio™ | Schwab U.S. Large-Cap Growth Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Schwab MarketTrack Balanced Portfolio™ | Schwab Fundamental International Equity Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Schwab MarketTrack Balanced Portfolio™ | Schwab Small-Cap Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Schwab MarketTrack Balanced Portfolio™ | Schwab U.S. REIT ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Schwab MarketTrack Balanced Portfolio™ | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Schwab MarketTrack Balanced Portfolio™ | Schwab Short-Term Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Schwab MarketTrack Balanced Portfolio™ | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 33.30%
Schwab MarketTrack Balanced Portfolio™ | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.60%
Schwab MarketTrack Balanced Portfolio™ | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 30.60%
Schwab MarketTrack Balanced Portfolio™ | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.10%
Schwab MarketTrack Balanced Portfolio™ | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.50%
Schwab MarketTrack Balanced Portfolio™ | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.30%
Schwab MarketTrack Balanced Portfolio™ | Real Estate - U.S. REITs [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.00%
Schwab MarketTrack Balanced Portfolio™ | Fixed Income - High-Yield Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.60%
Schwab MarketTrack Balanced Portfolio™ | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.00%
Schwab MarketTrack Conservative Portfolio™ | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Schwab MarketTrack Conservative Portfolio™ | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 48.00%
Schwab MarketTrack Conservative Portfolio™ | Schwab International Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab MarketTrack Conservative Portfolio™ | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Schwab MarketTrack Conservative Portfolio™ | Schwab U.S. Large-Cap Growth Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Schwab MarketTrack Conservative Portfolio™ | Schwab Fundamental International Equity Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Schwab MarketTrack Conservative Portfolio™ | Schwab Small-Cap Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Schwab MarketTrack Conservative Portfolio™ | Schwab U.S. REIT ETF [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Schwab MarketTrack Conservative Portfolio™ | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Schwab MarketTrack Conservative Portfolio™ | Schwab Short-Term Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Schwab MarketTrack Conservative Portfolio™ | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 22.20%
Schwab MarketTrack Conservative Portfolio™ | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.40%
Schwab MarketTrack Conservative Portfolio™ | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 48.20%
Schwab MarketTrack Conservative Portfolio™ | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10%
Schwab MarketTrack Conservative Portfolio™ | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
Schwab MarketTrack Conservative Portfolio™ | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.40%
Schwab MarketTrack Conservative Portfolio™ | Real Estate - U.S. REITs [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
Schwab MarketTrack Conservative Portfolio™ | Fixed Income - High-Yield Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
Schwab MarketTrack Conservative Portfolio™ | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.30%
Schwab Target 2010 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Schwab Target 2010 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Schwab Target 2010 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Schwab Target 2010 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 28.30%
Schwab Target 2010 Fund | Schwab Government Money Fund, Ultra Shares [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Schwab Target 2010 Fund | Schwab Treasury Inflation Protected Securities Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Schwab Target 2010 Fund | Schwab Short-Term Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.40%
Schwab Target 2010 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Schwab Target 2010 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Schwab Target 2010 Fund | Baird Aggregate Bond Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
Schwab Target 2010 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 21.80%
Schwab Target 2010 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.40%
Schwab Target 2010 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 45.90%
Schwab Target 2010 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.90%
Schwab Target 2010 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.50%
Schwab Target 2010 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
Schwab Target 2010 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
Schwab Target 2010 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.40%
Schwab Target 2010 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
Schwab Target 2010 Fund | Fixed Income - Inflation-Protected Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.90%
Schwab Target 2015 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Schwab Target 2015 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Schwab Target 2015 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
Schwab Target 2015 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 25.90%
Schwab Target 2015 Fund | Schwab Treasury Inflation Protected Securities Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Schwab Target 2015 Fund | Schwab Short-Term Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Schwab Target 2015 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Target 2015 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Schwab Target 2015 Fund | Baird Aggregate Bond Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
Schwab Target 2015 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Schwab Target 2015 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.30%
Schwab Target 2015 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.90%
Schwab Target 2015 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 42.60%
Schwab Target 2015 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
Schwab Target 2015 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
Schwab Target 2015 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.10%
Schwab Target 2015 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.30%
Schwab Target 2015 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.70%
Schwab Target 2015 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.30%
Schwab Target 2015 Fund | Fixed Income - Inflation-Protected Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.40%
Schwab Target 2020 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Schwab Target 2020 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Schwab Target 2020 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
Schwab Target 2020 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 24.30%
Schwab Target 2020 Fund | Schwab Treasury Inflation Protected Securities Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Target 2020 Fund | Schwab Short-Term Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Schwab Target 2020 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Target 2020 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Schwab Target 2020 Fund | Baird Aggregate Bond Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.20%
Schwab Target 2020 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Schwab Target 2020 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.10%
Schwab Target 2020 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 9.80%
Schwab Target 2020 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 40.50%
Schwab Target 2020 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.30%
Schwab Target 2020 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.90%
Schwab Target 2020 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
Schwab Target 2020 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.50%
Schwab Target 2020 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.20%
Schwab Target 2020 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40%
Schwab Target 2020 Fund | Fixed Income - Inflation-Protected Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.10%
Schwab Target 2025 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Schwab Target 2025 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Schwab Target 2025 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.40%
Schwab Target 2025 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 23.20%
Schwab Target 2025 Fund | Schwab Treasury Inflation Protected Securities Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Schwab Target 2025 Fund | Schwab Short-Term Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Schwab Target 2025 Fund | Allspring Core Plus Bond Fund, Class R6 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Schwab Target 2025 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Schwab Target 2025 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Schwab Target 2025 Fund | Baird Aggregate Bond Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.40%
Schwab Target 2025 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 27.10%
Schwab Target 2025 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 10.80%
Schwab Target 2025 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 39.00%
Schwab Target 2025 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.30%
Schwab Target 2025 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
Schwab Target 2025 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
Schwab Target 2025 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.60%
Schwab Target 2025 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.80%
Schwab Target 2025 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.50%
Schwab Target 2025 Fund | Fixed Income - Inflation-Protected Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.00%
Schwab Target 2030 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Schwab Target 2030 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Schwab Target 2030 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
Schwab Target 2030 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 16.90%
Schwab Target 2030 Fund | Schwab Short-Term Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Schwab Target 2030 Fund | Allspring Core Plus Bond Fund, Class R6 [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Schwab Target 2030 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Schwab Target 2030 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Schwab Target 2030 Fund | Baird Aggregate Bond Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Schwab Target 2030 Fund | PIMCO International Bond Fund (U.S. Dollar-Hedged), Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Target 2030 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 33.30%
Schwab Target 2030 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 15.00%
Schwab Target 2030 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 30.50%
Schwab Target 2030 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.30%
Schwab Target 2030 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.70%
Schwab Target 2030 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.00%
Schwab Target 2030 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.70%
Schwab Target 2030 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.30%
Schwab Target 2030 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.90%
Schwab Target 2030 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.50%
Schwab Target 2030 Fund | Fixed Income - Inflation-Protected Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.80%
Schwab Target 2035 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Schwab Target 2035 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Schwab Target 2035 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 18.40%
Schwab Target 2035 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
Schwab Target 2035 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Target 2035 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Schwab Target 2035 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Schwab Target 2035 Fund | Baird Aggregate Bond Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Schwab Target 2035 Fund | PIMCO International Bond Fund (U.S. Dollar-Hedged), Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Target 2035 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Target 2035 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 38.90%
Schwab Target 2035 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 18.20%
Schwab Target 2035 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 22.50%
Schwab Target 2035 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.40%
Schwab Target 2035 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
Schwab Target 2035 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60%
Schwab Target 2035 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10%
Schwab Target 2035 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.70%
Schwab Target 2035 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.30%
Schwab Target 2035 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.70%
Schwab Target 2035 Fund | Fixed Income - Inflation-Protected Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
Schwab Target 2040 Fund | Schwab Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Schwab Target 2040 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Schwab Target 2040 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.00%
Schwab Target 2040 Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Target 2040 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.40%
Schwab Target 2040 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Schwab Target 2040 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Schwab Target 2040 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Schwab Target 2040 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Schwab Target 2040 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Target 2040 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 42.60%
Schwab Target 2040 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 20.70%
Schwab Target 2040 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 16.70%
Schwab Target 2040 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.40%
Schwab Target 2040 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.90%
Schwab Target 2040 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
Schwab Target 2040 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.20%
Schwab Target 2040 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10%
Schwab Target 2040 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
Schwab Target 2040 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
Schwab Target 2045 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Schwab Target 2045 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
Schwab Target 2045 Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Schwab Target 2045 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.80%
Schwab Target 2045 Fund | Schwab U.S. Aggregate Bond Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Schwab Target 2045 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Schwab Target 2045 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Schwab Target 2045 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Schwab Target 2045 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Schwab Target 2045 Fund | Goldman Sachs Emerging Markets Equity Insights Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Target 2045 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 45.70%
Schwab Target 2045 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 22.60%
Schwab Target 2045 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 11.40%
Schwab Target 2045 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.20%
Schwab Target 2045 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.10%
Schwab Target 2045 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
Schwab Target 2045 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.20%
Schwab Target 2045 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.40%
Schwab Target 2045 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.40%
Schwab Target 2045 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
Schwab Target 2050 Fund | Schwab Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Schwab Target 2050 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.10%
Schwab Target 2050 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
Schwab Target 2050 Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Schwab Target 2050 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.70%
Schwab Target 2050 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Schwab Target 2050 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Schwab Target 2050 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Schwab Target 2050 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Schwab Target 2050 Fund | Goldman Sachs Emerging Markets Equity Insights Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.50%
Schwab Target 2050 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 46.70%
Schwab Target 2050 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 24.70%
Schwab Target 2050 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.20%
Schwab Target 2050 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.90%
Schwab Target 2050 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.50%
Schwab Target 2050 Fund | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.20%
Schwab Target 2050 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.50%
Schwab Target 2050 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.60%
Schwab Target 2050 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.90%
Schwab Target 2050 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.80%
Schwab Target 2055 Fund | Schwab Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Schwab Target 2055 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Schwab Target 2055 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Schwab Target 2055 Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Schwab Target 2055 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.70%
Schwab Target 2055 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Schwab Target 2055 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Schwab Target 2055 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Schwab Target 2055 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Schwab Target 2055 Fund | Goldman Sachs Emerging Markets Equity Insights Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Schwab Target 2055 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 48.10%
Schwab Target 2055 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 25.10%
Schwab Target 2055 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.90%
Schwab Target 2055 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.50%
Schwab Target 2055 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 5.80%
Schwab Target 2055 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.10%
Schwab Target 2055 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.90%
Schwab Target 2055 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.60%
Schwab Target 2055 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
Schwab Target 2060 Fund | Schwab Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Schwab Target 2060 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Schwab Target 2060 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
Schwab Target 2060 Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Schwab Target 2060 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Schwab Target 2060 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Schwab Target 2060 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.10%
Schwab Target 2060 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Target 2060 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Schwab Target 2060 Fund | Goldman Sachs Emerging Markets Equity Insights Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Schwab Target 2060 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 49.10%
Schwab Target 2060 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 25.20%
Schwab Target 2060 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 3.30%
Schwab Target 2060 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 7.90%
Schwab Target 2060 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.40%
Schwab Target 2060 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.80%
Schwab Target 2060 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.80%
Schwab Target 2060 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
Schwab Target 2060 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
Schwab Target 2065 Fund | Schwab Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Schwab Target 2065 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
Schwab Target 2065 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 13.90%
Schwab Target 2065 Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Schwab Target 2065 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 19.90%
Schwab Target 2065 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Schwab Target 2065 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.10%
Schwab Target 2065 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Target 2065 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Schwab Target 2065 Fund | Goldman Sachs Emerging Markets Equity Insights Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Schwab Target 2065 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 49.80%
Schwab Target 2065 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 25.50%
Schwab Target 2065 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
Schwab Target 2065 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.10%
Schwab Target 2065 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.90%
Schwab Target 2065 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
Schwab Target 2065 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.80%
Schwab Target 2065 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.40%
Schwab Target 2065 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.00%
Schwab Target 2070 Fund | Schwab Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Schwab Target 2070 Fund | Schwab Select Large Cap Growth Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Schwab Target 2070 Fund | Schwab International Opportunities Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.20%
Schwab Target 2070 Fund | Schwab Small-Cap Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Schwab Target 2070 Fund | Schwab S&P 500 Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 20.10%
Schwab Target 2070 Fund | Schwab Fundamental U.S. Large Company Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Schwab Target 2070 Fund | Schwab International Core Equity Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Schwab Target 2070 Fund | Dodge & Cox Stock Fund, Class I [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Schwab Target 2070 Fund | Schwab Global Real Estate Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Schwab Target 2070 Fund | Goldman Sachs Emerging Markets Equity Insights Fund, Institutional Class [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Schwab Target 2070 Fund | U.S. Stocks - Large-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 50.00%
Schwab Target 2070 Fund | International Stocks - Developed Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 26.10%
Schwab Target 2070 Fund | Fixed Income - Intermediate-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 1.20%
Schwab Target 2070 Fund | U.S. Stocks - Small-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 8.00%
Schwab Target 2070 Fund | International Stocks - Emerging Markets [Member]  
Holdings [Line Items]  
Percent of Total Investments 6.90%
Schwab Target 2070 Fund | Fixed Income - International Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.50%
Schwab Target 2070 Fund | Real Estate - Global Real Estate [Member]  
Holdings [Line Items]  
Percent of Total Investments 4.90%
Schwab Target 2070 Fund | Fixed Income - Short-Term Bond [Member]  
Holdings [Line Items]  
Percent of Total Investments 0.30%
Schwab Target 2070 Fund | U.S. Stocks - Mid-Cap [Member]  
Holdings [Line Items]  
Percent of Total Investments 2.10%
[1] Excludes derivatives.
[2] Includes the fund’s position(s) in money market mutual funds registered under the Investment Company Act of 1940, as amended.
[3] Less than 0.05%.
[4] The holdings listed exclude any temporary liquidity investments.