v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
Fidelity Series Large Cap Stock Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
Fidelity Series Large Cap Stock Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Series Large Cap Stock Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.40%
Fidelity Series Large Cap Stock Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Series Large Cap Stock Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Series Large Cap Stock Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Series Large Cap Stock Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Series Large Cap Stock Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Fidelity Series Large Cap Stock Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Series Large Cap Stock Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Series Large Cap Stock Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.40%
Fidelity Series Large Cap Stock Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 26.00%
Fidelity Series Large Cap Stock Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Series Large Cap Stock Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Series Large Cap Stock Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.20%
Fidelity Series Large Cap Stock Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Series Large Cap Stock Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
Fidelity Series Large Cap Stock Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Series Large Cap Stock Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.30%
Fidelity Series Large Cap Stock Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Series Large Cap Stock Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Series Large Cap Stock Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 92.80%
Fidelity Series Large Cap Stock Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Series Large Cap Stock Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Series Large Cap Stock Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Series Large Cap Stock Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Series Large Cap Stock Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Series Large Cap Stock Fund | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Series Large Cap Stock Fund | Sweden  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Series Large Cap Stock Fund | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Series Large Cap Stock Fund | Portugal  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Series Large Cap Stock Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 94.90%
Fidelity Series Large Cap Stock Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Series Large Cap Stock Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
Fidelity Mega Cap Stock Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Mega Cap Stock Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Mega Cap Stock Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Mega Cap Stock Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Mega Cap Stock Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Mega Cap Stock Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Mega Cap Stock Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Mega Cap Stock Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Mega Cap Stock Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Mega Cap Stock Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Mega Cap Stock Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Mega Cap Stock Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 29.80%
Fidelity Mega Cap Stock Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Mega Cap Stock Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Mega Cap Stock Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Mega Cap Stock Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Mega Cap Stock Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Mega Cap Stock Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Mega Cap Stock Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Mega Cap Stock Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Mega Cap Stock Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Mega Cap Stock Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.10%
Fidelity Mega Cap Stock Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Mega Cap Stock Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Mega Cap Stock Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Mega Cap Stock Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Mega Cap Stock Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Mega Cap Stock Fund | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Mega Cap Stock Fund | Sweden  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Mega Cap Stock Fund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Mega Cap Stock Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 95.80%
Fidelity Mega Cap Stock Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Mega Cap Stock Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Mega Cap Stock Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Advisor Mega Cap Stock Fund - Class Z | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 29.80%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class Z | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.10%
Fidelity Advisor Mega Cap Stock Fund - Class Z | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class Z | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Sweden  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class Z | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Mega Cap Stock Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 95.80%
Fidelity Advisor Mega Cap Stock Fund - Class Z | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Mega Cap Stock Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Advisor Mega Cap Stock Fund - Class M | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Mega Cap Stock Fund - Class M | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 29.80%
Fidelity Advisor Mega Cap Stock Fund - Class M | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Mega Cap Stock Fund - Class M | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class M | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Mega Cap Stock Fund - Class M | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class M | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Mega Cap Stock Fund - Class M | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Mega Cap Stock Fund - Class M | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Mega Cap Stock Fund - Class M | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Mega Cap Stock Fund - Class M | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class M | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.10%
Fidelity Advisor Mega Cap Stock Fund - Class M | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Mega Cap Stock Fund - Class M | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class M | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Mega Cap Stock Fund - Class M | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class M | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class M | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class M | Sweden  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class M | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Mega Cap Stock Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 95.80%
Fidelity Advisor Mega Cap Stock Fund - Class M | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Mega Cap Stock Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Advisor Mega Cap Stock Fund - Class I | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Mega Cap Stock Fund - Class I | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 29.80%
Fidelity Advisor Mega Cap Stock Fund - Class I | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Mega Cap Stock Fund - Class I | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class I | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Mega Cap Stock Fund - Class I | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class I | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Mega Cap Stock Fund - Class I | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Mega Cap Stock Fund - Class I | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Mega Cap Stock Fund - Class I | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Mega Cap Stock Fund - Class I | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class I | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.10%
Fidelity Advisor Mega Cap Stock Fund - Class I | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Mega Cap Stock Fund - Class I | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class I | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Mega Cap Stock Fund - Class I | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class I | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class I | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class I | Sweden  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class I | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Mega Cap Stock Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 95.80%
Fidelity Advisor Mega Cap Stock Fund - Class I | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Mega Cap Stock Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Advisor Mega Cap Stock Fund - Class C | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Mega Cap Stock Fund - Class C | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 29.80%
Fidelity Advisor Mega Cap Stock Fund - Class C | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Mega Cap Stock Fund - Class C | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class C | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Mega Cap Stock Fund - Class C | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class C | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Mega Cap Stock Fund - Class C | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Mega Cap Stock Fund - Class C | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Mega Cap Stock Fund - Class C | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Mega Cap Stock Fund - Class C | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class C | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.10%
Fidelity Advisor Mega Cap Stock Fund - Class C | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Mega Cap Stock Fund - Class C | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class C | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Mega Cap Stock Fund - Class C | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class C | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class C | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class C | Sweden  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class C | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Mega Cap Stock Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 95.80%
Fidelity Advisor Mega Cap Stock Fund - Class C | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.90%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.60%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
Fidelity Advisor Mega Cap Stock Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
Fidelity Advisor Mega Cap Stock Fund - Class A | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 12.00%
Fidelity Advisor Mega Cap Stock Fund - Class A | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 29.80%
Fidelity Advisor Mega Cap Stock Fund - Class A | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
Fidelity Advisor Mega Cap Stock Fund - Class A | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class A | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.30%
Fidelity Advisor Mega Cap Stock Fund - Class A | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class A | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.70%
Fidelity Advisor Mega Cap Stock Fund - Class A | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Fidelity Advisor Mega Cap Stock Fund - Class A | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.90%
Fidelity Advisor Mega Cap Stock Fund - Class A | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Advisor Mega Cap Stock Fund - Class A | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class A | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.10%
Fidelity Advisor Mega Cap Stock Fund - Class A | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Advisor Mega Cap Stock Fund - Class A | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class A | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Advisor Mega Cap Stock Fund - Class A | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor Mega Cap Stock Fund - Class A | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor Mega Cap Stock Fund - Class A | France  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class A | Sweden  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Advisor Mega Cap Stock Fund - Class A | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor Mega Cap Stock Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 95.80%
Fidelity Advisor Mega Cap Stock Fund - Class A | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor Mega Cap Stock Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
Fidelity Growth Discovery Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
Fidelity Growth Discovery Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Growth Discovery Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Growth Discovery Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Growth Discovery Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Growth Discovery Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Fidelity Growth Discovery Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Growth Discovery Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Growth Discovery Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Growth Discovery Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Growth Discovery Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Growth Discovery Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 51.20%
Fidelity Growth Discovery Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Growth Discovery Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Growth Discovery Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Growth Discovery Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Growth Discovery Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Growth Discovery Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
Fidelity Growth Discovery Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Growth Discovery Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Growth Discovery Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.00%
Fidelity Growth Discovery Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Growth Discovery Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Growth Discovery Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Growth Discovery Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Growth Discovery Fund | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Growth Discovery Fund | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Growth Discovery Fund | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Growth Discovery Fund | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Growth Discovery Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Growth Discovery Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.40%
Fidelity Growth Discovery Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Growth Discovery Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Growth Discovery Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
Fidelity Growth Discovery Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.50%
Fidelity Growth Discovery Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Growth Discovery Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.30%
Fidelity Growth Discovery Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Growth Discovery Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
Fidelity Growth Discovery Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
Fidelity Growth Discovery Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Growth Discovery Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Growth Discovery Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Growth Discovery Fund - Class K | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Fidelity Growth Discovery Fund - Class K | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 51.20%
Fidelity Growth Discovery Fund - Class K | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Growth Discovery Fund - Class K | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Growth Discovery Fund - Class K | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Growth Discovery Fund - Class K | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Growth Discovery Fund - Class K | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Growth Discovery Fund - Class K | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.60%
Fidelity Growth Discovery Fund - Class K | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Growth Discovery Fund - Class K | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Growth Discovery Fund - Class K | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.00%
Fidelity Growth Discovery Fund - Class K | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Growth Discovery Fund - Class K | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Growth Discovery Fund - Class K | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Growth Discovery Fund - Class K | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Growth Discovery Fund - Class K | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Growth Discovery Fund - Class K | Luxembourg  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Growth Discovery Fund - Class K | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Growth Discovery Fund - Class K | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Growth Discovery Fund - Class K | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Growth Discovery Fund - Class K | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.40%
Fidelity Growth Discovery Fund - Class K | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Growth Discovery Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.00%
Fidelity Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Fidelity Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Fidelity Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
Fidelity Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 27.60%
Fidelity Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
Fidelity Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
Fidelity Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
Fidelity Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 97.30%
Fidelity Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Fund | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Fund | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
Fidelity Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Fund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Fund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Fund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.90%
Fidelity Fund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Fund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
Fidelity Fund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
Fidelity Fund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
Fidelity Fund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Fidelity Fund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Fund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Fund - Class K | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
Fidelity Fund - Class K | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 27.60%
Fidelity Fund - Class K | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 12.10%
Fidelity Fund - Class K | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Fund - Class K | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.20%
Fidelity Fund - Class K | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Fund - Class K | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.70%
Fidelity Fund - Class K | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.00%
Fidelity Fund - Class K | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
Fidelity Fund - Class K | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Fidelity Fund - Class K | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Fund - Class K | United States  
Holdings [Line Items]  
Percent of Net Asset Value 97.30%
Fidelity Fund - Class K | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Fund - Class K | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Fund - Class K | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Fund - Class K | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Fund - Class K | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Fund - Class K | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 98.70%
Fidelity Fund - Class K | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Fund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%