| **Expense Example, No Redemption - FidelitySustainableEmergingMarketsEquityFundFidelitySustainableInternationalEquityFund-AMCIZComboPRO - FidelitySustainableEmergingMarketsEquityFundFidelitySustainableInternationalEquityFund-AMCIZComboPRO - Fidelity Sustainable International Equity Fund** | Dec. 30, 2024 USD ($) |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------|
| Fidelity Advisor Sustainable International Equity Fund - Class M                                                                                                                                                                                                                                  |                  |
| **Expense Example, No Redemption:**                                                                                                                                                                                                                                                               |                  |
| 1 Year                                                                                                                                                                                                                                                                                            | $ 502                 |
| 3 Years                                                                                                                                                                                                                                                                                           | 1,067                 |
| 5 Years                                                                                                                                                                                                                                                                                           | 1,705                 |
| 10 Years                                                                                                                                                                                                                                                                                          | 3,417                 |
| Fidelity Advisor Sustainable International Equity Fund - Class C                                                                                                                                                                                                                                  |                  |
| **Expense Example, No Redemption:**                                                                                                                                                                                                                                                               |                  |
| 1 Year                                                                                                                                                                                                                                                                                            | 208                   |
| 3 Years                                                                                                                                                                                                                                                                                           | 890                   |
| 5 Years                                                                                                                                                                                                                                                                                           | 1,645                 |
| 10 Years                                                                                                                                                                                                                                                                                          | 3,475                 |
| Fidelity Advisor Sustainable International Equity Fund - Class I                                                                                                                                                                                                                                  |                  |
| **Expense Example, No Redemption:**                                                                                                                                                                                                                                                               |                  |
| 1 Year                                                                                                                                                                                                                                                                                            | 107                   |
| 3 Years                                                                                                                                                                                                                                                                                           | 591                   |
| 5 Years                                                                                                                                                                                                                                                                                           | 1,153                 |
| 10 Years                                                                                                                                                                                                                                                                                          | 2,687                 |
| Fidelity Advisor Sustainable International Equity Fund - Class Z                                                                                                                                                                                                                                  |                  |
| **Expense Example, No Redemption:**                                                                                                                                                                                                                                                               |                  |
| 1 Year                                                                                                                                                                                                                                                                                            | 92                    |
| 3 Years                                                                                                                                                                                                                                                                                           | 561                   |
| 5 Years                                                                                                                                                                                                                                                                                           | 1,112                 |
| 10 Years                                                                                                                                                                                                                                                                                          | 2,617                 |
| Fidelity Advisor Sustainable International Equity Fund - Class A                                                                                                                                                                                                                                  |                  |
| **Expense Example, No Redemption:**                                                                                                                                                                                                                                                               |                  |
| 1 Year                                                                                                                                                                                                                                                                                            | 700                   |
| 3 Years                                                                                                                                                                                                                                                                                           | 1,208                 |
| 5 Years                                                                                                                                                                                                                                                                                           | 1,792                 |
| 10 Years                                                                                                                                                                                                                                                                                          | $ 3,367               |

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You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.
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| - Definition
You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.
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You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.
+ References
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You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.
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