v3.25.1
Average Annual Total Returns - FidelityMunicipalCorePlusBondFund-RetailPRO - FidelityMunicipalCorePlusBondFund-RetailPRO - Fidelity Municipal Core Plus Bond Fund
Apr. 01, 2025
Fidelity Municipal Core Plus Bond Fund | Return Before Taxes  
Average Annual Return:  
Past 1 year 1.84%
Since Inception 4.42% [1]
Fidelity Municipal Core Plus Bond Fund | After Taxes on Distributions  
Average Annual Return:  
Past 1 year 1.82%
Since Inception 4.41% [1]
Fidelity Municipal Core Plus Bond Fund | After Taxes on Distributions and Sales  
Average Annual Return:  
Past 1 year 2.54%
Since Inception 4.22% [1]
LB015  
Average Annual Return:  
Past 1 year 1.05%
Since Inception 3.27%
IXU23  
Average Annual Return:  
Past 1 year 1.61%
Since Inception 3.39%
[1]
A From February 16, 2023 .