v3.26.1
Shareholder Report, Holdings (Details)
May 31, 2026
Fidelity Water Sustainability Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.50%
Fidelity Water Sustainability Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Fidelity Water Sustainability Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Water Sustainability Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Water Sustainability Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Water Sustainability Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Water Sustainability Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Water Sustainability Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Water Sustainability Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Water Sustainability Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Fidelity Water Sustainability Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Water Sustainability Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 54.70%
Fidelity Water Sustainability Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Water Sustainability Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Water Sustainability Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Water Sustainability Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 38.90%
Fidelity Water Sustainability Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 62.60%
Fidelity Water Sustainability Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 14.70%
Fidelity Water Sustainability Fund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Water Sustainability Fund | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
Fidelity Water Sustainability Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Fidelity Water Sustainability Fund | France  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Water Sustainability Fund | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Water Sustainability Fund | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Water Sustainability Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.90%
Fidelity Water Sustainability Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Sustainable U.S. Equity Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
Fidelity Sustainable U.S. Equity Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Sustainable U.S. Equity Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Sustainable U.S. Equity Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Sustainable U.S. Equity Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Sustainable U.S. Equity Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Sustainable U.S. Equity Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Sustainable U.S. Equity Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Sustainable U.S. Equity Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Sustainable U.S. Equity Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Sustainable U.S. Equity Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Sustainable U.S. Equity Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
Fidelity Sustainable U.S. Equity Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Sustainable U.S. Equity Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Sustainable U.S. Equity Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
Fidelity Sustainable U.S. Equity Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Sustainable U.S. Equity Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Fidelity Sustainable U.S. Equity Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Sustainable U.S. Equity Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Sustainable U.S. Equity Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Sustainable U.S. Equity Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Sustainable U.S. Equity Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Sustainable U.S. Equity Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Sustainable U.S. Equity Fund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Sustainable U.S. Equity Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Sustainable U.S. Equity Fund | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Sustainable U.S. Equity Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Sustainable U.S. Equity Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Sustainable U.S. Equity Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Sustainable U.S. Equity Fund | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Sustainable U.S. Equity Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Sustainable U.S. Equity Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.70%
Fidelity Sustainable U.S. Equity Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Sustainable U.S. Equity Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class Z | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class M | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class I | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class C | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 36.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.70%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Advisor Sustainable U.S. Equity Fund - Class A | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity SAI Sustainable U.S. Equity Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.60%
Fidelity SAI Sustainable U.S. Equity Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity SAI Sustainable U.S. Equity Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity SAI Sustainable U.S. Equity Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity SAI Sustainable U.S. Equity Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity SAI Sustainable U.S. Equity Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity SAI Sustainable U.S. Equity Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity SAI Sustainable U.S. Equity Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity SAI Sustainable U.S. Equity Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity SAI Sustainable U.S. Equity Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity SAI Sustainable U.S. Equity Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity SAI Sustainable U.S. Equity Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 36.10%
Fidelity SAI Sustainable U.S. Equity Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 11.80%
Fidelity SAI Sustainable U.S. Equity Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity SAI Sustainable U.S. Equity Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 11.50%
Fidelity SAI Sustainable U.S. Equity Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity SAI Sustainable U.S. Equity Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.70%
Fidelity SAI Sustainable U.S. Equity Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
Fidelity SAI Sustainable U.S. Equity Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Fidelity SAI Sustainable U.S. Equity Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity SAI Sustainable U.S. Equity Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity SAI Sustainable U.S. Equity Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity SAI Sustainable U.S. Equity Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity SAI Sustainable U.S. Equity Fund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity SAI Sustainable U.S. Equity Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity SAI Sustainable U.S. Equity Fund | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity SAI Sustainable U.S. Equity Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity SAI Sustainable U.S. Equity Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity SAI Sustainable U.S. Equity Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity SAI Sustainable U.S. Equity Fund | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity SAI Sustainable U.S. Equity Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity SAI Sustainable U.S. Equity Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.10%
Fidelity SAI Sustainable U.S. Equity Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity SAI Sustainable Sector Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.70%
Fidelity SAI Sustainable Sector Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.40%
Fidelity SAI Sustainable Sector Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.20%
Fidelity SAI Sustainable Sector Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity SAI Sustainable Sector Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity SAI Sustainable Sector Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity SAI Sustainable Sector Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity SAI Sustainable Sector Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity SAI Sustainable Sector Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity SAI Sustainable Sector Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity SAI Sustainable Sector Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity SAI Sustainable Sector Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 39.20%
Fidelity SAI Sustainable Sector Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
Fidelity SAI Sustainable Sector Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity SAI Sustainable Sector Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.90%
Fidelity SAI Sustainable Sector Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity SAI Sustainable Sector Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity SAI Sustainable Sector Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity SAI Sustainable Sector Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.40%
Fidelity SAI Sustainable Sector Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
Fidelity SAI Sustainable Sector Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity SAI Sustainable Sector Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 94.50%
Fidelity SAI Sustainable Sector Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity SAI Sustainable Sector Fund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity SAI Sustainable Sector Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity SAI Sustainable Sector Fund | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity SAI Sustainable Sector Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity SAI Sustainable Sector Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity SAI Sustainable Sector Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity SAI Sustainable Sector Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity SAI Sustainable Sector Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity SAI Sustainable Sector Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 99.00%
Fidelity SAI Sustainable Sector Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Climate Action Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Climate Action Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Climate Action Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Climate Action Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Climate Action Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Climate Action Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Climate Action Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Climate Action Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Climate Action Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Climate Action Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Climate Action Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Climate Action Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 37.70%
Fidelity Climate Action Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Climate Action Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Fidelity Climate Action Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Climate Action Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Climate Action Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Climate Action Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Climate Action Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Climate Action Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Climate Action Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 88.30%
Fidelity Climate Action Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Climate Action Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Climate Action Fund | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Climate Action Fund | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Climate Action Fund | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Climate Action Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Climate Action Fund | China  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Climate Action Fund | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Climate Action Fund | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Climate Action Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
Fidelity Climate Action Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Climate Action Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Climate Action Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Climate Action Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Climate Action Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Climate Action Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Climate Action Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Climate Action Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Climate Action Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Climate Action Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class Z | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Climate Action Fund - Class Z | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 37.70%
Fidelity Advisor Climate Action Fund - Class Z | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Climate Action Fund - Class Z | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Fidelity Advisor Climate Action Fund - Class Z | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class Z | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Climate Action Fund - Class Z | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class Z | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class Z | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class Z | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Climate Action Fund - Class Z | United States  
Holdings [Line Items]  
Percent of Net Asset Value 88.30%
Fidelity Advisor Climate Action Fund - Class Z | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Climate Action Fund - Class Z | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class Z | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class Z | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Climate Action Fund - Class Z | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class Z | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Climate Action Fund - Class Z | China  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class Z | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class Z | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
Fidelity Advisor Climate Action Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Climate Action Fund - Class Z | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Climate Action Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Climate Action Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Climate Action Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Climate Action Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Climate Action Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Climate Action Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Climate Action Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Climate Action Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class M | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Climate Action Fund - Class M | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 37.70%
Fidelity Advisor Climate Action Fund - Class M | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Climate Action Fund - Class M | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Fidelity Advisor Climate Action Fund - Class M | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class M | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Climate Action Fund - Class M | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class M | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class M | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class M | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Climate Action Fund - Class M | United States  
Holdings [Line Items]  
Percent of Net Asset Value 88.30%
Fidelity Advisor Climate Action Fund - Class M | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Climate Action Fund - Class M | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class M | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class M | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Climate Action Fund - Class M | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class M | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Climate Action Fund - Class M | China  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class M | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class M | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
Fidelity Advisor Climate Action Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Climate Action Fund - Class M | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Climate Action Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Climate Action Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Climate Action Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Climate Action Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Climate Action Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Climate Action Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Climate Action Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Climate Action Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class I | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Climate Action Fund - Class I | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 37.70%
Fidelity Advisor Climate Action Fund - Class I | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Climate Action Fund - Class I | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Fidelity Advisor Climate Action Fund - Class I | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class I | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Climate Action Fund - Class I | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class I | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class I | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class I | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Climate Action Fund - Class I | United States  
Holdings [Line Items]  
Percent of Net Asset Value 88.30%
Fidelity Advisor Climate Action Fund - Class I | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Climate Action Fund - Class I | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class I | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class I | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Climate Action Fund - Class I | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class I | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Climate Action Fund - Class I | China  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class I | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class I | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
Fidelity Advisor Climate Action Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Climate Action Fund - Class I | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Climate Action Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Climate Action Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Climate Action Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Climate Action Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Climate Action Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Climate Action Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Climate Action Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Climate Action Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class C | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Climate Action Fund - Class C | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 37.70%
Fidelity Advisor Climate Action Fund - Class C | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Climate Action Fund - Class C | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Fidelity Advisor Climate Action Fund - Class C | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class C | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Climate Action Fund - Class C | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class C | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class C | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class C | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Climate Action Fund - Class C | United States  
Holdings [Line Items]  
Percent of Net Asset Value 88.30%
Fidelity Advisor Climate Action Fund - Class C | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Climate Action Fund - Class C | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class C | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class C | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Climate Action Fund - Class C | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class C | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Climate Action Fund - Class C | China  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class C | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class C | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
Fidelity Advisor Climate Action Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Climate Action Fund - Class C | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Climate Action Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Advisor Climate Action Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Advisor Climate Action Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Climate Action Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Advisor Climate Action Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor Climate Action Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor Climate Action Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor Climate Action Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class A | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Advisor Climate Action Fund - Class A | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 37.70%
Fidelity Advisor Climate Action Fund - Class A | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 13.10%
Fidelity Advisor Climate Action Fund - Class A | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.70%
Fidelity Advisor Climate Action Fund - Class A | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class A | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Advisor Climate Action Fund - Class A | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class A | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Advisor Climate Action Fund - Class A | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class A | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Climate Action Fund - Class A | United States  
Holdings [Line Items]  
Percent of Net Asset Value 88.30%
Fidelity Advisor Climate Action Fund - Class A | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor Climate Action Fund - Class A | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Climate Action Fund - Class A | France  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class A | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Climate Action Fund - Class A | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor Climate Action Fund - Class A | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
Fidelity Advisor Climate Action Fund - Class A | China  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Climate Action Fund - Class A | Germany  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Advisor Climate Action Fund - Class A | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Advisor Climate Action Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.50%
Fidelity Advisor Climate Action Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Advisor Climate Action Fund - Class A | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Agricultural Productivity Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 22.10%
Fidelity Agricultural Productivity Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.10%
Fidelity Agricultural Productivity Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Agricultural Productivity Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Agricultural Productivity Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Agricultural Productivity Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Agricultural Productivity Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Agricultural Productivity Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Agricultural Productivity Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Fidelity Agricultural Productivity Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Fidelity Agricultural Productivity Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 33.30%
Fidelity Agricultural Productivity Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
Fidelity Agricultural Productivity Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 35.50%
Fidelity Agricultural Productivity Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 74.80%
Fidelity Agricultural Productivity Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
Fidelity Agricultural Productivity Fund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Agricultural Productivity Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Agricultural Productivity Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 7.10%
Fidelity Agricultural Productivity Fund | Denmark  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Agricultural Productivity Fund | Hong Kong  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Fidelity Agricultural Productivity Fund | Norway  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Agricultural Productivity Fund | Indonesia  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Agricultural Productivity Fund | Faroe Islands  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Agricultural Productivity Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.70%
Fidelity Agricultural Productivity Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%