XML 25 R6.htm IDEA: XBRL DOCUMENT v3.20.2
Annual Total Returns - Fidelity® Real Estate Index Fund [BarChart] - 07.31 Fidelity Real Estate Index Fund PRO-08 - Fidelity® Real Estate Index Fund
Sep. 29, 2020
Bar Chart Table:  
Annual Return, Inception Date Sep. 08, 2011
Fidelity Real Estate Index Fund  
Bar Chart Table:  
Annual Return 2012 17.11%
Annual Return 2013 1.37%
Annual Return 2014 31.58%
Annual Return 2015 4.39%
Annual Return 2016 6.60%
Annual Return 2017 3.75%
Annual Return 2018 (4.21%)
Annual Return 2019 23.02%