v3.25.1
Risk/Return Detail Data - FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO
Apr. 01, 2025
USD ($)
Risk/Return:  
Registrant Name Fidelity Greenwood Street Trust
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund  
Risk/Return:  
Risk/Return [Heading] Fund Summary Fund /Class: Fidelity® Risk Parity Fund /Fidelity® Risk Parity Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block] Fidelity® Risk Parity Fund seeks total return.
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 82 % of the average value of its portfolio.
Portfolio Turnover, Rate 82.00%
Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text] Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses. As a result, the total annual operating expenses after fee waiver and/or expense reimbursement in the fee table exceed the contractual expense limitation of the class.
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] Using quantitative analysis to balance the fund's risk across four risk factors: growth (risk of reduced earnings expectations and increased default risk), inflation (risk of rising consumer inflation), real rates (risk of rising real interest rates), and liquidity (risk of reduced liquidity). Constructing a factor portfolio for each risk factor using a broad set of asset classes whose primary risk is the associated risk factor. Combining the factor portfolios, seeking to maximize the worst-case risk diversification across a set of market regimes. Allocating the fund's assets across affiliated and unaffiliated mutual funds and Exchange Traded Funds (ETFs) (collectively, underlying funds) and derivatives that provide exposure to a broad range of asset classes including equities (including domestic, international, and emerging markets equities), debt (including investment-grade debt, high yield debt, emerging markets debt, U.S. government securities, leveraged loans and international bonds), commodities and real estate. Investing in underlying funds, derivatives, cash and cash equivalents. Engaging in transactions that have a leveraging effect on the fund, including long and short investments in derivatives - such as forward contracts, futures, options and swaps - and forward-settling securities, to: create and adjust the fund's investment exposure; enhance total return; hedge against fluctuations in securities prices, interest rates, or currency exchange rates; change the effective duration of the fund's portfolio; manage certain investment risk; manage volatility; and/or substitute for the purchase or sale of securities or currencies. Investing  up to 25% of assets in a wholly-owned subsidiary organized under the laws of the Cayman Islands that invests in commodity-linked total return swaps based on the value of commodities or commodities indexes and in other commodity-linked derivative instruments, commodity- related ETFs and commodity-related exchange-traded notes (ETNs).
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 two hypothetical composites of market indexes   over various periods of time. The hypothetical composites of market indexes have 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 two hypothetical composites of market indexes   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 9.56%
Lowest Quarterly Return, Label    Lowest Quarter Return
Lowest Quarterly Return, Date Sep. 30, 2023
Lowest Quarterly Return (4.51%)
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.
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund | Fidelity Risk Parity Fund  
Risk/Return:  
Management fee 0.60%
Distribution and/or Service (12b-1) fees none
Other expenses 0.04%
Acquired fund fees and expenses 0.13%
Total annual operating expenses 0.77% [1]
Fee waiver and/or expense reimbursement 0.04% [2]
Total annual operating expenses after fee waiver and/or expense reimbursement 0.73% [1]
1 year $ 75
3 years 241
5 years 423
10 years $ 949
Annual Return, Inception Date Sep. 01, 2022
2023 8.44%
2024 6.87%
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund | Return Before Taxes | Fidelity Risk Parity Fund  
Risk/Return:  
Label Return Before Taxes
Past 1 year 6.87%
Since Inception 5.02% [3]
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund | After Taxes on Distributions | Fidelity Risk Parity Fund  
Risk/Return:  
Label Return After Taxes on Distributions
Past 1 year 4.90%
Since Inception 2.39% [3]
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund | After Taxes on Distributions and Sales | Fidelity Risk Parity Fund  
Risk/Return:  
Label Return After Taxes on Distributions and Sale of Fund Shares
Past 1 year 4.16%
Since Inception 2.75% [3]
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund | IXWWB  
Risk/Return:  
Label Fidelity Risk Parity Composite Index
Past 1 year 10.77%
Since Inception 10.77%
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund | IXSSC  
Risk/Return:  
Label Fidelity Risk Parity Custom Index
Past 1 year 3.83%
Since Inception 2.93%
FidelityMacroOpportunitiesRiskParityFunds-RetailComboPRO | Fidelity Risk Parity Fund | MS159  
Risk/Return:  
Label MSCI ACWI (All Country World Index) Index
Past 1 year 17.87%
Since Inception 17.16%
[1]
A Differs from the ratios of expenses to average net assets in the Financial Highlights section of the prospectus because of acquired fund fees and expenses. As a result, the total annual operating expenses after fee waiver and/or expense reimbursement in the fee table exceed the contractual expense limitation of the class.
[2]
B 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 0.60% (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.
[3]
A From September 1, 2022 .