v3.25.1
Average Annual Total Returns - FidelitySAIConvertibleArbitrageFund-PRO - FidelitySAIConvertibleArbitrageFund-PRO - Fidelity SAI Convertible Arbitrage Fund
Apr. 01, 2025
Fidelity SAI Convertible Arbitrage Fund | Return Before Taxes  
Average Annual Return:  
Past 1 year 10.63%
Since Inception 9.14% [1]
Fidelity SAI Convertible Arbitrage Fund | After Taxes on Distributions  
Average Annual Return:  
Past 1 year 8.07%
Since Inception 7.06% [1]
Fidelity SAI Convertible Arbitrage Fund | After Taxes on Distributions and Sales  
Average Annual Return:  
Past 1 year 6.28%
Since Inception 6.10% [1]
LB057  
Average Annual Return:  
Past 1 year 5.29%
Since Inception 5.35%
LB001  
Average Annual Return:  
Past 1 year 1.25%
Since Inception 4.79%
[1]
A From September 12, 2023 .