Expense Example {- Fidelity Series Investment Grade Securitized Fund} - 08.31 Fidelity Series Investment Grade Securitized Fund PRO-05 - Fidelity Series Investment Grade Securitized Fund - Fidelity Series Investment Grade Securitized Fund	Oct. 29, 2022 USD ($)
Expense Example:
1 year	none
3 years	none
5 years	2
10 years	$ 9