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Average Annual Total Returns - FidelityNASDAQCompositeIndexETF-PRO - FidelityNASDAQCompositeIndexETF-PRO - Fidelity Nasdaq Composite Index ETF
Jan. 29, 2025
Fidelity Nasdaq Composite Index ETF | Return Before Taxes  
Average Annual Return:  
Past 1 year 29.39%
Past 5 years 17.74%
Past 10 years 16.28%
Fidelity Nasdaq Composite Index ETF | After Taxes on Distributions  
Average Annual Return:  
Past 1 year 29.12%
Past 5 years 17.50%
Past 10 years 15.99%
Fidelity Nasdaq Composite Index ETF | After Taxes on Distributions and Sales  
Average Annual Return:  
Past 1 year 17.48%
Past 5 years 14.35%
Past 10 years 13.77%
NS004  
Average Annual Return:  
Past 1 year 29.57%
Past 5 years 17.49%
Past 10 years 16.20%
SP001  
Average Annual Return:  
Past 1 year 25.02%
Past 5 years 14.53%
Past 10 years 13.10%