v3.25.2
Shareholder Report, Holdings (Details)
Jun. 30, 2025
Fidelity Series Opportunistic Insights Fund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 15.40%
Fidelity Series Opportunistic Insights Fund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Series Opportunistic Insights Fund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.10%
Fidelity Series Opportunistic Insights Fund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Series Opportunistic Insights Fund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.50%
Fidelity Series Opportunistic Insights Fund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
Fidelity Series Opportunistic Insights Fund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Series Opportunistic Insights Fund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Series Opportunistic Insights Fund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Series Opportunistic Insights Fund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Series Opportunistic Insights Fund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 19.20%
Fidelity Series Opportunistic Insights Fund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 24.20%
Fidelity Series Opportunistic Insights Fund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
Fidelity Series Opportunistic Insights Fund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Series Opportunistic Insights Fund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Series Opportunistic Insights Fund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Series Opportunistic Insights Fund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
Fidelity Series Opportunistic Insights Fund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Series Opportunistic Insights Fund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 24.10%
Fidelity Series Opportunistic Insights Fund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Series Opportunistic Insights Fund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Series Opportunistic Insights Fund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.10%
Fidelity Series Opportunistic Insights Fund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
Fidelity Series Opportunistic Insights Fund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Series Opportunistic Insights Fund | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Series Opportunistic Insights Fund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Series Opportunistic Insights Fund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Series Opportunistic Insights Fund | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Series Opportunistic Insights Fund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Series Opportunistic Insights Fund | Israel  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Series Opportunistic Insights Fund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Series Opportunistic Insights Fund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.60%
Fidelity Series Opportunistic Insights Fund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Series Opportunistic Insights Fund | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Series Opportunistic Insights Fund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Contrafund K6 | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 17.50%
Fidelity Contrafund K6 | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.60%
Fidelity Contrafund K6 | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.00%
Fidelity Contrafund K6 | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.80%
Fidelity Contrafund K6 | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.20%
Fidelity Contrafund K6 | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Fidelity Contrafund K6 | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
Fidelity Contrafund K6 | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund K6 | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund K6 | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund K6 | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.30%
Fidelity Contrafund K6 | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 25.80%
Fidelity Contrafund K6 | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.00%
Fidelity Contrafund K6 | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Contrafund K6 | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
Fidelity Contrafund K6 | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Contrafund K6 | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
Fidelity Contrafund K6 | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Contrafund K6 | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 25.70%
Fidelity Contrafund K6 | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Contrafund K6 | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Contrafund K6 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.60%
Fidelity Contrafund K6 | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
Fidelity Contrafund K6 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Contrafund K6 | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Contrafund K6 | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Contrafund K6 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund K6 | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund K6 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund K6 | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
Fidelity Contrafund K6 | CongoDemocraticRepublicOfMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund K6 | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.10%
Fidelity Contrafund K6 | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Contrafund K6 | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Contrafund K6 | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
Fidelity Contrafund | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
Fidelity Contrafund | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Contrafund | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Contrafund | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Contrafund | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Contrafund | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Contrafund | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Contrafund | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Contrafund | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Contrafund | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.40%
Fidelity Contrafund | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.80%
Fidelity Contrafund | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Contrafund | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Contrafund | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Contrafund | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Contrafund | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Contrafund | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 26.10%
Fidelity Contrafund | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Contrafund | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Contrafund | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.70%
Fidelity Contrafund | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Contrafund | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Contrafund | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Contrafund | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.30%
Fidelity Contrafund | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Contrafund | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Contrafund | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund - Class K | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
Fidelity Contrafund - Class K | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
Fidelity Contrafund - Class K | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
Fidelity Contrafund - Class K | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
Fidelity Contrafund - Class K | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Contrafund - Class K | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.20%
Fidelity Contrafund - Class K | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Contrafund - Class K | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Contrafund - Class K | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
Fidelity Contrafund - Class K | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund - Class K | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 18.40%
Fidelity Contrafund - Class K | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.80%
Fidelity Contrafund - Class K | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 6.60%
Fidelity Contrafund - Class K | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
Fidelity Contrafund - Class K | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 8.10%
Fidelity Contrafund - Class K | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Contrafund - Class K | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
Fidelity Contrafund - Class K | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Contrafund - Class K | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 26.10%
Fidelity Contrafund - Class K | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Fidelity Contrafund - Class K | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Contrafund - Class K | United States  
Holdings [Line Items]  
Percent of Net Asset Value 93.70%
Fidelity Contrafund - Class K | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Contrafund - Class K | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Contrafund - Class K | Korea, Republic of  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund - Class K | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund - Class K | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund - Class K | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Contrafund - Class K | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund - Class K | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.40%
Fidelity Contrafund - Class K | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 0.30%
Fidelity Contrafund - Class K | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 96.30%
Fidelity Contrafund - Class K | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Contrafund - Class K | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Contrafund - Class K | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor New Insights Fund - Class Z | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor New Insights Fund - Class Z | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor New Insights Fund - Class Z | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor New Insights Fund - Class Z | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor New Insights Fund - Class Z | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor New Insights Fund - Class Z | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor New Insights Fund - Class Z | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor New Insights Fund - Class Z | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor New Insights Fund - Class Z | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor New Insights Fund - Class Z | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class Z | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.20%
Fidelity Advisor New Insights Fund - Class Z | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 24.50%
Fidelity Advisor New Insights Fund - Class Z | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Fidelity Advisor New Insights Fund - Class Z | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor New Insights Fund - Class Z | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
Fidelity Advisor New Insights Fund - Class Z | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor New Insights Fund - Class Z | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor New Insights Fund - Class Z | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor New Insights Fund - Class Z | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
Fidelity Advisor New Insights Fund - Class Z | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor New Insights Fund - Class Z | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class Z | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor New Insights Fund - Class Z | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor New Insights Fund - Class Z | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor New Insights Fund - Class Z | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor New Insights Fund - Class Z | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class Z | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class Z | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class Z | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor New Insights Fund - Class Z | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor New Insights Fund - Class Z | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class Z | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.00%
Fidelity Advisor New Insights Fund - Class Z | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor New Insights Fund - Class Z | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor New Insights Fund - Class Z | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class M | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor New Insights Fund - Class M | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor New Insights Fund - Class M | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor New Insights Fund - Class M | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor New Insights Fund - Class M | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor New Insights Fund - Class M | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor New Insights Fund - Class M | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor New Insights Fund - Class M | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor New Insights Fund - Class M | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor New Insights Fund - Class M | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class M | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.20%
Fidelity Advisor New Insights Fund - Class M | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 24.50%
Fidelity Advisor New Insights Fund - Class M | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Fidelity Advisor New Insights Fund - Class M | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor New Insights Fund - Class M | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
Fidelity Advisor New Insights Fund - Class M | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor New Insights Fund - Class M | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor New Insights Fund - Class M | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor New Insights Fund - Class M | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
Fidelity Advisor New Insights Fund - Class M | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor New Insights Fund - Class M | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class M | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor New Insights Fund - Class M | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor New Insights Fund - Class M | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor New Insights Fund - Class M | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor New Insights Fund - Class M | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class M | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class M | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class M | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor New Insights Fund - Class M | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor New Insights Fund - Class M | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class M | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.00%
Fidelity Advisor New Insights Fund - Class M | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor New Insights Fund - Class M | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor New Insights Fund - Class M | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class I | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor New Insights Fund - Class I | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor New Insights Fund - Class I | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor New Insights Fund - Class I | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor New Insights Fund - Class I | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor New Insights Fund - Class I | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor New Insights Fund - Class I | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor New Insights Fund - Class I | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor New Insights Fund - Class I | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor New Insights Fund - Class I | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class I | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.20%
Fidelity Advisor New Insights Fund - Class I | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 24.50%
Fidelity Advisor New Insights Fund - Class I | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Fidelity Advisor New Insights Fund - Class I | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor New Insights Fund - Class I | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
Fidelity Advisor New Insights Fund - Class I | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor New Insights Fund - Class I | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor New Insights Fund - Class I | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor New Insights Fund - Class I | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
Fidelity Advisor New Insights Fund - Class I | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor New Insights Fund - Class I | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class I | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor New Insights Fund - Class I | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor New Insights Fund - Class I | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor New Insights Fund - Class I | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor New Insights Fund - Class I | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class I | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class I | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class I | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor New Insights Fund - Class I | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor New Insights Fund - Class I | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class I | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.00%
Fidelity Advisor New Insights Fund - Class I | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor New Insights Fund - Class I | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor New Insights Fund - Class I | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class C | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor New Insights Fund - Class C | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor New Insights Fund - Class C | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor New Insights Fund - Class C | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor New Insights Fund - Class C | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor New Insights Fund - Class C | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor New Insights Fund - Class C | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor New Insights Fund - Class C | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor New Insights Fund - Class C | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor New Insights Fund - Class C | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class C | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.20%
Fidelity Advisor New Insights Fund - Class C | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 24.50%
Fidelity Advisor New Insights Fund - Class C | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Fidelity Advisor New Insights Fund - Class C | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor New Insights Fund - Class C | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
Fidelity Advisor New Insights Fund - Class C | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor New Insights Fund - Class C | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor New Insights Fund - Class C | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor New Insights Fund - Class C | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
Fidelity Advisor New Insights Fund - Class C | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor New Insights Fund - Class C | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class C | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor New Insights Fund - Class C | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor New Insights Fund - Class C | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor New Insights Fund - Class C | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor New Insights Fund - Class C | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class C | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class C | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class C | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor New Insights Fund - Class C | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor New Insights Fund - Class C | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class C | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.00%
Fidelity Advisor New Insights Fund - Class C | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor New Insights Fund - Class C | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor New Insights Fund - Class C | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class A | TH0Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.50%
Fidelity Advisor New Insights Fund - Class A | TH1Member  
Holdings [Line Items]  
Percent of Net Asset Value 9.20%
Fidelity Advisor New Insights Fund - Class A | TH2Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
Fidelity Advisor New Insights Fund - Class A | TH3Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
Fidelity Advisor New Insights Fund - Class A | TH4Member  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
Fidelity Advisor New Insights Fund - Class A | TH5Member  
Holdings [Line Items]  
Percent of Net Asset Value 4.70%
Fidelity Advisor New Insights Fund - Class A | TH6Member  
Holdings [Line Items]  
Percent of Net Asset Value 3.60%
Fidelity Advisor New Insights Fund - Class A | TH7Member  
Holdings [Line Items]  
Percent of Net Asset Value 2.20%
Fidelity Advisor New Insights Fund - Class A | TH8Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Fidelity Advisor New Insights Fund - Class A | TH9Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class A | MSFinancialsSectorMember  
Holdings [Line Items]  
Percent of Net Asset Value 15.20%
Fidelity Advisor New Insights Fund - Class A | Information Technology Member  
Holdings [Line Items]  
Percent of Net Asset Value 24.50%
Fidelity Advisor New Insights Fund - Class A | Healthcare Sector  
Holdings [Line Items]  
Percent of Net Asset Value 7.30%
Fidelity Advisor New Insights Fund - Class A | Real Estate Sector  
Holdings [Line Items]  
Percent of Net Asset Value 0.20%
Fidelity Advisor New Insights Fund - Class A | Industrial Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 13.00%
Fidelity Advisor New Insights Fund - Class A | Materials Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
Fidelity Advisor New Insights Fund - Class A | Consumer Discretionary Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 10.30%
Fidelity Advisor New Insights Fund - Class A | Consumer Staples Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
Fidelity Advisor New Insights Fund - Class A | Communications Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 23.40%
Fidelity Advisor New Insights Fund - Class A | Energy Sector  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
Fidelity Advisor New Insights Fund - Class A | Utilities Sector Member  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
Fidelity Advisor New Insights Fund - Class A | United States  
Holdings [Line Items]  
Percent of Net Asset Value 91.80%
Fidelity Advisor New Insights Fund - Class A | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 2.30%
Fidelity Advisor New Insights Fund - Class A | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 0.60%
Fidelity Advisor New Insights Fund - Class A | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 0.90%
Fidelity Advisor New Insights Fund - Class A | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class A | China  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class A | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 0.50%
Fidelity Advisor New Insights Fund - Class A | OtherMember  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
Fidelity Advisor New Insights Fund - Class A | Netherlands  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
Fidelity Advisor New Insights Fund - Class A | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%
Fidelity Advisor New Insights Fund - Class A | AACommonStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 97.00%
Fidelity Advisor New Insights Fund - Class A | AAPreferredStocksMember  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
Fidelity Advisor New Insights Fund - Class A | AAPreferredSecuritiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.00%
Fidelity Advisor New Insights Fund - Class A | AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember  
Holdings [Line Items]  
Percent of Net Asset Value 0.40%