Investment Risks - FidelityLargeCapStockFund-AMCIZPRO - Fidelity Large Cap Stock Fund	Jul. 25, 2025
Risk Lose Money [Member]
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Risk [Text Block]	You could lose money by investing in the fund.
Risk Not Insured Depository Institution [Member]
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Risk [Text Block]	An investment in the fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency .
GrowthInvestingMember
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Risk [Text Block]	"Growth" Investing. "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.
ValueInvestingMember
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Risk [Text Block]	"Value" Investing. "Value" stocks can perform differently from the market as a whole and other types of stocks and can continue to be undervalued by the market for long periods of time.
ForeignExposureMember
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Risk [Text Block]	Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.
IssuerSpecificChangesMember
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Risk [Text Block]	Issuer-Specific Changes. The value of an individual security or particular type of security can be more volatile than, and can perform differently from, the market as a whole.
StockMarketVolatilityMember
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Risk [Text Block]	Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments.

You could lose money by investing in the fund.

"Growth" Investing. "Growth" stocks can perform differently from the market as a whole and other types of stocks and can be more volatile than other types of stocks.

Prospectus Line Items

Risk [Text Block]

Foreign Exposure. Foreign markets can be more volatile than the U.S. market due to increased risks of adverse issuer, political, regulatory, market, or economic developments and can perform differently from the U.S. market.

Prospectus Line Items

Risk [Text Block]

Stock Market Volatility. Stock markets are volatile and can decline significantly in response to adverse issuer, political, regulatory, market, or economic developments. Different parts of the market, including different market sectors, and different types of securities can react differently to these developments.