Baillie Gifford China Equities Fund - Institutional & K Class Prospectus Baillie Gifford Emerging Markets Equities Fund - Institutional & K Class Prospectus Baillie Gifford Emerging Markets ex China Fund - Institutional & K Class Prospectus Baillie Gifford Global Alpha Equities Fund - Institutional & K Class Prospectus Baillie Gifford International Alpha Fund - Institutional & K Class Prospectus Baillie Gifford International Concentrated Growth Equities Fund - Institutional & K Class Prospectus Baillie Gifford International Growth Fund - Institutional & K Class Prospectus Baillie Gifford Long Term Global Growth Fund - Institutional & K Class Prospectus Baillie Gifford U.S. Equity Growth Fund - Institutional & K Class Prospectus Baillie Gifford Emerging Markets Equities Fund - Class 2,3,4 & 5 Prospectus Baillie Gifford Global Alpha Equities Fund - Class 2,3,4 & 5 Prospectus Baillie Gifford International Alpha Fund - Class 2,3,4 & 5 Prospectus Baillie Gifford International Growth Fund - Class 2,3,4 & 5 Prospectus Baillie Gifford Long Term Global Growth Fund - Class 2,3,4 & 5 Prospectus Baillie Gifford China Equities Fund Baillie Gifford Emerging Markets Equities Fund Baillie Gifford Emerging Markets ex China Fund Baillie Gifford Global Alpha Equities Fund Baillie Gifford International Alpha Fund Baillie Gifford International Concentrated Growth Equities Fund Baillie Gifford International Growth Fund Baillie Gifford Long Term Global Growth Fund Baillie Gifford U.S. Equity Growth Fund Class K Institutional Class Class K Institutional Class Class K Institutional Class Class K Institutional Class Class K Institutional Class Class K Institutional Class Class K Institutional Class Class K Institutional Class Class K Institutional Class Class 2 Class 3 Class 4 Class 5 Class 2 Class 3 Class 4 Class 5 Class 2 Class 3 Class 4 Class 5 Class 2 Class 3 Class 4 Class 5 Class 2 Class 3 Class 4 Class 5 China Risk [Member] Investment Style Risk [Member] Government and Regulatory Risk [Member] Asia Risk [Member] Market Disruption and Geopolitical Risk [Member] Geographic Focus Risk [Member] Conflicts of Interest Risk [Member] Currency Risk [Member] Developed Markets Risk [Member] Emerging Markets Risk [Member] Equity Securities Risk [Member] ESG Risk [Member] Focused Investment Risk [Member] Frontier Markets Risk [Member] Growth Stock Risk [Member] Information Technology Risk [Member] IPO Risk [Member] Large-Capitalization Securities Risk [Member] Liquidity Risk [Member] Long-Term Investment Strategy Risk [Member] Market Risk [Member] New and Smaller-Sized Funds Risk [Member] Non-Diversification Risk [Member] Non-U.S. Investment Risk [Member] Service Provider Risk [Member] Settlement Risk [Member] Small- and Medium-Capitalization Securities Risk [Member] Underlying Funds Risk [Member] Valuation Risk [Member] MSCI China All Shares Index MSCI Emerging Markets Index MSCI Emerging Markets ex China MSCI ACWI Index MSCI ACWI ex USA Index MSCI ACWI ex USA Index(2) MSCI 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Strategy Risk Member C000228389 Member S000026149 Member index_ MSCI_ EAFE_ Index2 Member IPORisk Member C000193786 Member C000078432 Member index_ MSCI_ Emerging_ Markets_ex_ China Member C000186028 Member C000186027 Member C000034449 Member S000012763 Member C000186030 Member C000186037 Member C000193787 Member doc_ Baillie_ Gifford_ International_ Alpha_ Fund_ Institutional_ K_ Class_ Prospectus Member S000074798 Member C000144092 Member doc_ Baillie_ Gifford_ International_ Growth_ Fund_ Class_234_5_ Prospectus Member C000157006 Member C000116267 Member Geographic Focus Risk Member Frontier Markets Risk Member Market Risk Member index_ MSCI_ ACWI_ Index4 Member C000186031 Member C000078430 Member index_ Russell_1000_ Growth_ Index5 Member C000186026 Member C000116266 Member doc_ Baillie_ Gifford_ Global_ Alpha_ Equities_ Fund_ Institutional_ K_ Class_ Prospectus Member C000144091 Member Market Disruption And Geopolitical Risk Member Conflicts Of Interest Risk Member China Risk Member S000072288 Member Information Technology Risk Member C000018471 Member C000144094 Member C000078439 Member S000006833 Member C000228388 Member Investment Style Risk Member Service Provider Risk Member C000186029 Member S000012764 Member S000059107 Member index_ MSCI_ ACWI_ex_ USA_ Index2 Member C000034448 Member Settlement Risk Member Government And Regulatory Risk Member C000186041 Member C000233007 Member Currency Risk Member C000186036 Member C000157005 Member doc_ Baillie_ Gifford_ International_ Growth_ Fund_ Institutional_ K_ Class_ Prospectus Member index_ MSCI_ China_ All_ Shares_ Index Member doc_ Baillie_ Gifford_ Long_ Term_ Global_ Growth_ Fund_ Institutional_ K_ Class_ Prospectus Member ESGRisk Member doc_ Baillie_ Gifford_ Emerging_ Markets_ex_ China_ Fund_ Institutional_ K_ Class_ Prospectus Member C000034445 Member index_ MSCI_ ACWI_ Index Member C000186040 Member Asia Risk Member Developed Markets Risk Member doc_ Baillie_ Gifford_ Emerging_ Markets_ Equities_ Fund_ Class_234_5_ Prospectus Member doc_ Baillie_ Gifford_ Emerging_ Markets_ Equities_ Fund_ Institutional_ K_ Class_ Prospectus Member index_ MSCI_ Emerging_ Markets_ Index Member C000034446 Member C000018472 Member C000186034 Member Liquidity Risk Member C000116269 Member S000046079 Member New And Smaller Sized Funds Risk Member doc_ Baillie_ Gifford_ Long_ Term_ Global_ Growth_ Fund_ Class_234_5_ Prospectus Member C000078433 Member Focused Investment Risk Member Valuation Risk Member doc_ Baillie_ Gifford_ China_ Equities_ Fund_ Institutional_ K_ Class_ Prospectus Member Large Capitalization Securities Risk Member