Net Assets Investment Company, Portfolio Turnover C000225985 [Member] Schwab International Dividend Equity ETF C000079984 [Member] Schwab International Equity ETF C000079985 [Member] Schwab International Small-Cap Equity ETF C000079986 [Member] Schwab Emerging Markets Equity ETF C000079978 [Member] Schwab U.S. Broad Market ETF C000193734 [Member] Schwab 1000 Index ETF C000079979 [Member] Schwab U.S. Large-Cap ETF C000079980 [Member] Schwab U.S. Large-Cap Growth ETF C000079981 [Member] Schwab U.S. Large-Cap Value ETF C000079982 [Member] Schwab U.S. Mid-Cap ETF C000079983 [Member] Schwab U.S. Small-Cap ETF C000105320 [Member] Schwab U.S. Dividend Equity ETF C000255020 [Member] Schwab Mortgage-Backed Securities ETF C000241773 [Member] Schwab High Yield Bond ETF ICE BofA US Cash Pay High Yield Constrained Index [Member] Bloomberg US Aggregate Bond Index [Member] Bloomberg US MBS Float Adjusted Total Return Index [Member] Dow Jones U.S. Dividend 100TM Index [Member] StandardPoors500IndexMember Standard & Poor's 500 Index [Member] Dow Jones U.S. Small-Cap Total Stock Market Index [Member] Dow Jones U.S. Mid-Cap Total Stock Market Index [Member] Dow Jones U.S. Mid-Cap Total Stock Market Index [Member] Dow Jones U.S. Large-Cap Value Total Stock Market Index [Member] Dow Jones U.S. Large-Cap Growth Total Stock Market Index [Member] Dow Jones U.S. Large-Cap Total Stock Market Index [Member] Schwab 1000 Index [Member] Russell 1000® Index [Member] Dow Jones U.S. Broad Stock Market Index [Member] FTSE Emerging Index (Net) [Member] FTSE Emerging Index (Net) [Member] MSCI Emerging Markets Index (Net) [Member] MSCI Emerging Markets Index (Net) [Member] FTSE Developed Small Cap ex US Liquid Index (Net) [Member] FTSE Developed ex US Index (Net) [Member] FTSE Developed ex US Index (Net) [Member] MSCI EAFE® Index (Net) [Member] Dow Jones International Dividend 100 Index (Net) [Member] Investment Type [Axis] Corporates [Member] Short-Term Investments [Member] BB [Member] B [Member] CCC [Member] CC [Member] C [Member] Unrated Securities [Member] Securitized [Member] Healthcare Sector [Member] Energy Sector [Member] Financials [Member] Merck & Co., Inc. [Member] Amgen, Inc. [Member] Amgen, Inc. [Member] Abbott Laboratories [Member] Coca-Cola Co. [Member] Coca-Cola Co. [Member] Chevron Corp. [Member] Verizon Communications, Inc. [Member] ConocoPhillips [Member] Home Depot, Inc. [Member] Procter & Gamble Co. [Member] UnitedHealth Group, Inc. [Member] UnitedHealth Group, Inc. [Member] Real Estate Sector [Member] Sandisk Corp. [Member] Lumentum Holdings, Inc. [Member] Revolution Medicines, Inc. [Member] ATI, Inc. [Member] Coeur Mining, Inc. [Member] Guardant Health, Inc. [Member] MACOM Technology Solutions Holdings, Inc. [Member] MKS, Inc. [Member] Samsara, Inc., Class A [Member] Pinnacle Financial Partners, Inc. [Member] Coherent Corp. [Member] Ciena Corp. [Member] Bloom Energy Corp., Class A [Member] Moderna, Inc. [Member] Flex Ltd. [Member] Twilio, Inc., Class A [Member] Steel Dynamics, Inc. [Member] Micron Technology, Inc. [Member] JPMorgan Chase & Co. [Member] ExxonMobil Holdings Corp. [Member] Johnson & Johnson [Member] Walmart, Inc. [Member] AbbVie, Inc. [Member] Berkshire Hathaway, Inc., Class B [Member] Intel Corp. [Member] Cisco Systems, Inc. [Member] Bank of America Corp. [Member] NVIDIA Corp. [Member] Apple, Inc. [Member] Microsoft Corp. [Member] Amazon.com, Inc. [Member] Alphabet, Inc., Class A [Member] Broadcom, Inc. [Member] Alphabet, Inc., Class C [Member] Meta Platforms, Inc., Class A [Member] Eli Lilly & Co. [Member] Visa, Inc., Class A [Member] Tesla, Inc. [Member] CHINA TAIWAN INDIA BRAZIL SOUTH AFRICA SAUDI ARABIA MEXICO Other Countries [Member] Taiwan Semiconductor Manufacturing Co. Ltd. [Member] Tencent Holdings Ltd. [Member] Alibaba Group Holding Ltd. [Member] HDFC Bank Ltd. [Member] China Construction Bank Corp., H Shares [Member] ICICI Bank Ltd. [Member] MediaTek, Inc. [Member] Delta Electronics, Inc. [Member] Reliance Industries Ltd. [Member] Hon Hai Precision Industry Co. Ltd. [Member] JAPAN CANADA UNITED KINGDOM AUSTRALIA KOREA, REPUBLIC OF SWEDEN SWITZERLAND GERMANY FRANCE UNITED STATES NORWAY DENMARK ITALY Hudbay Minerals, Inc. [Member] Eldorado Gold Corp. [Member] DPM Metals Inc. [Member] Aritzia, Inc. [Member] Gaztransport Et Technigaz SA [Member] Storebrand ASA [Member] Finning International, Inc. [Member] Accelleron Industries AG [Member] G Mining Ventures Corp. [Member] Subsea 7 SA [Member] NETHERLANDS SPAIN Samsung Electronics Co. Ltd. [Member] SK Hynix, Inc. [Member] ASML Holding NV [Member] HSBC Holdings PLC [Member] Roche Holding AG [Member] Royal Bank of Canada [Member] Novartis AG [Member] Shell PLC [Member] Nestle SA [Member] Mitsubishi UFJ Financial Group, Inc. [Member] SINGAPORE FINLAND Unilever PLC [Member] Deutsche Post AG [Member] BHP Group Ltd. [Member] Wesfarmers Ltd. [Member] GSK PLC [Member] Enel SpA [Member] Eni SpA [Member] TotalEnergies SE [Member] British American Tobacco PLC [Member]