v3.25.1
Risk/Return Detail Data - FidelityHedgedEquityFund-RetailPRO
Apr. 01, 2025
USD ($)
Risk/Return:  
Registrant Name Fidelity Greenwood Street Trust
FidelityHedgedEquityFund-RetailPRO | Fidelity Hedged Equity Fund  
Risk/Return:  
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Hedged Equity Fund /Fidelity® Hedged Equity Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block] Fidelity® Hedged Equity Fund seeks capital appreciation.
Expense [Heading] Fee Table
Expense Narrative [Text Block] The following table describes the fees and expenses that may be incurred when you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder Fees Caption [Text] Shareholder fees
(fees paid directly from your investment) none
Operating Expenses Caption [Text] Annual Operating Expenses
Fee Waiver or Reimbursement over Assets, Date of Termination May 31, 2026
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block] The fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual operating expenses or in the example, affect the fund's performance. During the most recent fiscal year, the fund's portfolio turnover rate was 56 % of the average value of its portfolio.
Portfolio Turnover, Rate 56.00%
Expense Example Narrative [Text Block] This example helps compare the cost of investing in the fund with the cost of investing in other funds. Let's say, hypothetically, that the annual return for shares of the fund is 5% and that the fees and the annual operating expenses for shares of the fund are exactly as described in the fee table. This example illustrates the effect of fees and expenses, but is not meant to suggest actual or expected fees and expenses or returns, all of which may vary. For every $10,000 you invested, here's how much you would pay in total expenses if you sell all of your shares at the end of each time period indicated:
Strategy [Heading] Principal Investment Strategies
Strategy Narrative [Text Block] Normally investing at least 80% of assets in equity securities. Equity securities represent an ownership interest, or the right to acquire an ownership interest, in an issuer. Equity securities include common stocks (including depositary receipts evidencing ownership of common stock), preferred stocks and other preferred securities, convertible securities, rights and warrants, and other securities, such as hybrid securities and trust preferred securities, believed to have equity-like characteristics. Effective December 11, 2025, derivative instruments that provide investment exposure to the investments above or exposure to one or more market risk factors associated with such investments are included in the fund's 80% policy, consistent with the fund's investment policies and limitations with respect to investments in derivatives. Investing in common stocks of companies with market capitalizations generally similar to companies in the S&P 500® Index. Using a disciplined approach designed to construct an equity portfolio with similar risk-return characteristics to the S&P 500® Index. Employing a disciplined options-based strategy designed to provide downside protection in certain market conditions (i.e., offset or mitigate a decrease in the value of the fund's investments). The extent of this protection will be determined primarily based on the cost of the put options in the marketplace. Managing the options positions in a way that provides diversification of options strike prices and expirations.
Risk [Heading] Principal Investment Risks
Bar Chart and Performance Table [Heading] Performance
Performance Narrative [Text Block] The following information is intended to help you understand the risks of investing in the fund. The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time. The additional index has characteristics relevant to the fund's investment strategies. Index descriptions appear in the "Additional Index Information" section of the prospectus. Past performance (before and after taxes) is not an indication of future performance. Visit www.fidelity.com for more recent performance information.
Performance Information Illustrates Variability of Returns [Text] The information illustrates the changes in the performance of the fund's shares from year to year and compares the performance of the fund's shares to the performance of a securities market index and an additional index over various periods of time.
Performance Availability Website Address [Text] www.fidelity.com
Performance Past Does Not Indicate Future [Text] Past performance (before and after taxes) is not an indication of future performance.
Bar Chart [Heading] Year-by-Year Returns
Highest Quarterly Return, Label    Highest Quarter Return
Highest Quarterly Return, Date Dec. 31, 2023
Highest Quarterly Return 9.73%
Lowest Quarterly Return, Label    Lowest Quarter Return
Lowest Quarterly Return, Date Sep. 30, 2023
Lowest Quarterly Return (2.86%)
Performance Table Heading Average Annual Returns
Performance Table Uses Highest Federal Rate After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes.
Performance Table Not Relevant to Tax Deferred The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan).
Performance Table Explanation after Tax Higher Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.
Performance Table Narrative After-tax returns are calculated using the historical highest individual federal marginal income tax rates, but do not reflect the impact of state or local taxes. Actual after-tax returns may differ depending on your individual circumstances. The after-tax returns shown are not relevant if you hold your shares in a retirement account or in another tax-deferred arrangement, such as an employee benefit plan (profit sharing, 401(k), or 403(b) plan). Return After Taxes on Distributions and Sale of Fund Shares may be higher than other returns for the same period due to a tax benefit of realizing a capital loss upon the sale of fund shares.
FidelityHedgedEquityFund-RetailPRO | Fidelity Hedged Equity Fund | Fidelity Hedged Equity Fund  
Risk/Return:  
Management fee 0.55%
Distribution and/or Service (12b-1) fees none
Other expenses 0.04%
Total annual operating expenses 0.59%
Fee waiver and/or expense reimbursement 0.04% [1]
Total annual operating expenses after fee waiver and/or expense reimbursement 0.55%
1 year $ 56
3 years 184
5 years 324
10 years $ 733
Annual Return, Inception Date Sep. 01, 2022
2023 17.65%
2024 19.46%
FidelityHedgedEquityFund-RetailPRO | Fidelity Hedged Equity Fund | Return Before Taxes | Fidelity Hedged Equity Fund  
Risk/Return:  
Label Return Before Taxes
Past 1 year 19.46%
Since Inception 13.41% [2]
FidelityHedgedEquityFund-RetailPRO | Fidelity Hedged Equity Fund | After Taxes on Distributions | Fidelity Hedged Equity Fund  
Risk/Return:  
Label Return After Taxes on Distributions
Past 1 year 19.29%
Since Inception 13.21% [2]
FidelityHedgedEquityFund-RetailPRO | Fidelity Hedged Equity Fund | After Taxes on Distributions and Sales | Fidelity Hedged Equity Fund  
Risk/Return:  
Label Return After Taxes on Distributions and Sale of Fund Shares
Past 1 year 11.65%
Since Inception 10.39% [2]
FidelityHedgedEquityFund-RetailPRO | Fidelity Hedged Equity Fund | IXUYK  
Risk/Return:  
Label Cboe S&P 500 5% Put Protection Index
Past 1 year 20.52%
Since Inception 14.24%
FidelityHedgedEquityFund-RetailPRO | Fidelity Hedged Equity Fund | SP001  
Risk/Return:  
Label S&P 500® Index
Past 1 year 25.02%
Since Inception 20.22%
[1]
A Fidelity Diversifying Solutions LLC (FDS) has contractually agreed to reimburse the class of shares of the fund to the extent that total operating expenses (excluding interest, certain taxes, proxy and shareholder meeting expenses, extraordinary expenses, and acquired fund fees and expenses (including fees and expenses associated with a wholly owned subsidiary), if any, as well as non-operating expenses such as brokerage commissions and fees and expenses associated with the fund's securities lending program, if applicable), as a percentage of its average net assets, exceed 0.55% (the Expense Cap). If at any time during the current fiscal year expenses for the class of shares of the fund fall below the Expense Cap, FDS reserves the right to recoup through the end of the fiscal year any expenses that were reimbursed during the current fiscal year up to, but not in excess of, the Expense Cap. This arrangement will remain in effect through May 31, 2026 . FDS may not terminate this arrangement before the expiration date without the approval of the Board of Trustees and may extend it in its discretion after that date.
[2]
A From September 1, 2022 .