Risk/Return Summary - FidelityTreasuryOnlyMoneyMarketFund-ClassNPRO - FidelityTreasuryOnlyMoneyMarketFund-ClassNPRO - Fidelity Treasury Only Money Market Fund |
Jan. 27, 2025 |
|---|---|
| Risk Lose Money [Text] | |
| Prospectus Line Items | |
| Risk Text Block | You could lose money by investing in the fund . |
| Risk Money Market Fund May Not Preserve Dollar [Text] | |
| Prospectus Line Items | |
| Risk Text Block | Although the fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so . |
| Risk Money Market Fund Sponsor May Not Provide Support [Text] | |
| Prospectus Line Items | |
| Risk Text Block | Fidelity Investments and its affiliates, the fund's sponsor, is not required to reimburse the fund for losses, and you should not expect that the sponsor will provide financial support to the fund at any time, including during periods of market stress. |
| Risk Not Insured Depository Institution [Text] | |
| Prospectus Line Items | |
| Risk Text Block | An investment in the fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency . |
| InterestRateChangesMember | |
| Prospectus Line Items | |
| Risk Text Block | Interest Rate Changes. Interest rate increases can cause the price of a money market security to decrease. |
| IncomeRiskMember | |
| Prospectus Line Items | |
| Risk Text Block | Income Risk. A low or negative interest rate environment can adversely affect the fund's yield. |
| IssuerSpecificChangesMember | |
| Prospectus Line Items | |
| Risk Text Block | Issuer-Specific Changes. A decline in the credit quality of an issuer can cause the price of a money market security to decrease. |