v3.25.0.1
Average Annual Total Returns - FidelityConservativeIncomeMunicipalBondFund-RetailPro - FidelityConservativeIncomeMunicipalBondFund-RetailPro - Fidelity Conservative Income Municipal Bond Fund
Mar. 01, 2025
Fidelity Conservative Income Municipal Bond Fund | Return Before Taxes  
Average Annual Return:  
Past 1 year 3.30%
Past 5 years 1.62%
Past 10 years 1.35%
Fidelity Conservative Income Municipal Bond Fund | After Taxes on Distributions  
Average Annual Return:  
Past 1 year 3.30%
Past 5 years 1.62%
Past 10 years 1.34%
Fidelity Conservative Income Municipal Bond Fund | After Taxes on Distributions and Sales  
Average Annual Return:  
Past 1 year 3.30%
Past 5 years 1.63%
Past 10 years 1.34%
LB015  
Average Annual Return:  
Past 1 year 1.05%
Past 5 years 0.99%
Past 10 years 2.25%
F1872  
Average Annual Return:  
Past 1 year 3.10%
Past 5 years 1.58%
Past 10 years 1.31%
LB319  
Average Annual Return:  
Past 1 year 2.71%
Past 5 years 1.39%
Past 10 years 1.30%