Expense Example - FidelityEnvironmentandAlternativeEnergyNaturalResourcesFunds-ComboPRO - FidelityEnvironmentandAlternativeEnergyNaturalResourcesFunds-ComboPRO - Fidelity Environment and Alternative Energy Fund - Fidelity Environment and Alternative Energy Fund	Apr. 29, 2023 USD ($)
Expense Example:
1 year	$ 81
3 years	252
5 years	439
10 years	$ 978

Expense Example - FidelityEnvironmentandAlternativeEnergyNaturalResourcesFunds-ComboPRO - FidelityEnvironmentandAlternativeEnergyNaturalResourcesFunds-ComboPRO - Fidelity Environment and Alternative Energy Fund - Fidelity Environment and Alternative Energy Fund

Apr. 29, 2023

USD ($)

1 year

$ 81

3 years

252

5 years

439

10 years

$ 978