funds_us_0494|AM:FMSFX|Short Name|price|total_return_price|net_asset_value|total_assets_under_management|assets_under_management|| funds_us_0494|AM:FMSFX|Long Name|Fidelity Mortgage Securities Fund (FMSFX) Price (USD)|Fidelity Mortgage Securities Fund (FMSFX) Total Return Price (USD)|Fidelity Mortgage Securities Fund (FMSFX) Net Asset Value (USD)|Fidelity Mortgage Securities Fund (FMSFX) Total Assets Under Management (USD)|Fidelity Mortgage Securities Fund (FMSFX) Share Class Assets Under Management (USD)|| funds_us_0494|AM:FMSFX|Unit|figure_money_USD_price|figure_money_USD_price|figure_money_USD_price|figure_money_USD_metric|figure_money_USD_metric|| funds_us_0494|AM:FMSFX||market_daily|market_daily|daily|daily|daily|| funds_us_0494|AM:FMSFX|20241122|9.74|77.5846|9.74|||| funds_us_0494|AM:FMSFX|20241125|9.83|78.3087|9.83|||| funds_us_0494|AM:FMSFX|20241126|9.81|78.1583|9.81|||| funds_us_0494|AM:FMSFX|20241127|9.84|78.4051|9.84|||| funds_us_0494|AM:FMSFX|20241128|9.84|78.4136|9.84|||| funds_us_0494|AM:FMSFX|20241129|9.87|78.669|9.87|600759908|331248552|| funds_us_0494|AM:FMSFX|20241202|9.87|78.6869|9.87|||| funds_us_0494|AM:FMSFX|20241203|9.85|78.5358|9.85|||| funds_us_0494|AM:FMSFX|20241204|9.88|78.7831|9.88|||| funds_us_0494|AM:FMSFX|20241205|9.88|78.7914|9.88|||| funds_us_0494|AM:FMSFX|20241206|9.91|79.0553|9.91|||| funds_us_0494|AM:FMSFX|20241209|9.88|78.8241|9.88|||| funds_us_0494|AM:FMSFX|20241210|9.87|78.7518|9.87|||| funds_us_0494|AM:FMSFX|20241211|9.84|78.5201|9.84|||| funds_us_0494|AM:FMSFX|20241212|9.8|78.209|9.8|||| funds_us_0494|AM:FMSFX|20241213|9.75|77.8328|9.75|||| funds_us_0494|AM:FMSFX|20241216|9.76|77.9198|9.76|||| funds_us_0494|AM:FMSFX|20241217|9.76|77.9271|9.76|||| funds_us_0494|AM:FMSFX|20241218|9.64|77.3445|9.64|||| funds_us_0494|AM:FMSFX|20241219|9.62|77.0972|9.62|||| funds_us_0494|AM:FMSFX|20241220|9.65|77.359|9.65|||| funds_us_0494|AM:FMSFX|20241223|9.61|77.0459|9.61|||| funds_us_0494|AM:FMSFX|20241224|9.61|77.053|9.61|||| funds_us_0494|AM:FMSFX|20241225|9.61|77.0604|9.61|||| funds_us_0494|AM:FMSFX|20241226|9.62|77.1476|9.62|||| funds_us_0494|AM:FMSFX|20241227|9.6|77.0098|9.6|||| funds_us_0494|AM:FMSFX|20241230|9.65|77.4245|9.65|||| funds_us_0494|AM:FMSFX|20241231|9.63|77.2645|9.63|590090789|325886879|| funds_us_0494|AM:FMSFX|20250101|9.63|77.273|9.63|||| funds_us_0494|AM:FMSFX|20250102|9.64|77.3616|9.64|||| funds_us_0494|AM:FMSFX|20250103|9.62|77.2233|9.62|||| funds_us_0494|AM:FMSFX|20250106|9.61|77.1504|9.61|||| funds_us_0494|AM:FMSFX|20250107|9.58|76.9171|9.58|||| funds_us_0494|AM:FMSFX|20250108|9.59|77.0047|9.59|||| funds_us_0494|AM:FMSFX|20250109|9.59|77.0121|9.59|||| funds_us_0494|AM:FMSFX|20250110|9.51|76.3916|9.51|||| funds_us_0494|AM:FMSFX|20250113|9.49|76.2383|9.49|||| funds_us_0494|AM:FMSFX|20250114|9.5|76.3258|9.5|||| funds_us_0494|AM:FMSFX|20250115|9.59|77.0551|9.59|||| funds_us_0494|AM:FMSFX|20250116|9.62|77.303|9.62|||| funds_us_0494|AM:FMSFX|20250117|9.62|77.332|9.62|||| funds_us_0494|AM:FMSFX|20250121|9.64|77.5|9.64|||| funds_us_0494|AM:FMSFX|20250122|9.62|77.3468|9.62|||| funds_us_0494|AM:FMSFX|20250123|9.6|77.1935|9.6|||| funds_us_0494|AM:FMSFX|20250124|9.61|77.2955|9.61|||| funds_us_0494|AM:FMSFX|20250127|9.67|77.7842|9.67|||| funds_us_0494|AM:FMSFX|20250128|9.67|77.7915|9.67|||| funds_us_0494|AM:FMSFX|20250129|9.67|77.7988|9.67|||| funds_us_0494|AM:FMSFX|20250130|9.68|77.8937|9.68|||| funds_us_0494|AM:FMSFX|20250131|9.66|77.7332|9.66|590483734|325882062|| funds_us_0494|AM:FMSFX|20250203|9.66|77.7621|9.66|||| funds_us_0494|AM:FMSFX|20250204|9.68|77.932|9.68|||| funds_us_0494|AM:FMSFX|20250205|9.72|78.2629|9.72|||| funds_us_0494|AM:FMSFX|20250206|9.72|78.272|9.72|||| funds_us_0494|AM:FMSFX|20250207|9.69|78.0576|9.69|||| funds_us_0494|AM:FMSFX|20250210|9.69|78.0662|9.69|||| funds_us_0494|AM:FMSFX|20250211|9.67|77.9142|9.67|||| funds_us_0494|AM:FMSFX|20250212|9.61|77.4405|9.61|||| funds_us_0494|AM:FMSFX|20250213|9.67|77.9322|9.67|||| funds_us_0494|AM:FMSFX|20250214|9.71|78.2806|9.71|||| funds_us_0494|AM:FMSFX|20250217|9.71|78.2895|9.71|||| funds_us_0494|AM:FMSFX|20250218|9.66|77.8961|9.66|||| funds_us_0494|AM:FMSFX|20250219|9.69|78.1464|9.69|||| funds_us_0494|AM:FMSFX|20250220|9.7|78.2359|9.7|||| funds_us_0494|AM:FMSFX|20250221|9.75|78.6653|9.75|||| funds_us_0494|AM:FMSFX|20250224|9.75|78.6743|9.75|||| funds_us_0494|AM:FMSFX|20250225|9.82|79.2466|9.82|||| funds_us_0494|AM:FMSFX|20250226|9.84|79.4166|9.84|||| funds_us_0494|AM:FMSFX|20250227|9.83|79.3544|9.83|||| funds_us_0494|AM:FMSFX|20250228|9.87|79.6762|9.87|608730341|333713732|| funds_us_0494|AM:FMSFX|20250303|9.89|79.8652|9.89|||| funds_us_0494|AM:FMSFX|20250304|9.86|79.6315|9.86|||| funds_us_0494|AM:FMSFX|20250305|9.82|79.3172|9.82|||| funds_us_0494|AM:FMSFX|20250306|9.81|79.245|9.81|||| funds_us_0494|AM:FMSFX|20250307|9.81|79.2705|9.81|||| funds_us_0494|AM:FMSFX|20250310|9.85|79.6016|9.85|||| funds_us_0494|AM:FMSFX|20250311|9.81|79.2872|9.81|||| funds_us_0494|AM:FMSFX|20250312|9.8|79.215|9.8|||| funds_us_0494|AM:FMSFX|20250313|9.81|79.3046|9.81|||| funds_us_0494|AM:FMSFX|20250314|9.79|79.1688|9.79|||| funds_us_0494|AM:FMSFX|20250317|9.8|79.2581|9.8|||| funds_us_0494|AM:FMSFX|20250318|9.8|79.2669|9.8|||| funds_us_0494|AM:FMSFX|20250319|9.83|79.5177|9.83|||| funds_us_0494|AM:FMSFX|20250320|9.84|79.607|9.84|||| funds_us_0494|AM:FMSFX|20250321|9.83|79.5525|9.83|||| funds_us_0494|AM:FMSFX|20250324|9.78|79.1576|9.78|||| funds_us_0494|AM:FMSFX|20250325|9.79|79.2471|9.79|||| funds_us_0494|AM:FMSFX|20250326|9.77|79.0943|9.77|||| funds_us_0494|AM:FMSFX|20250327|9.77|79.103|9.77|||| funds_us_0494|AM:FMSFX|20250328|9.82|79.5418|9.82|||| funds_us_0494|AM:FMSFX|20250331|9.84|79.7033|9.84|613947961|336122580|| funds_us_0494|AM:FMSFX|20250401|9.87|79.9562|9.87|||| funds_us_0494|AM:FMSFX|20250402|9.85|79.8041|9.85|||| funds_us_0494|AM:FMSFX|20250403|9.92|80.3801|9.92|||| funds_us_0494|AM:FMSFX|20250404|9.93|80.4874|9.93|||| funds_us_0494|AM:FMSFX|20250407|9.8|79.4434|9.8|||| funds_us_0494|AM:FMSFX|20250408|9.74|78.9658|9.74|||| funds_us_0494|AM:FMSFX|20250409|9.73|78.8936|9.73|||| funds_us_0494|AM:FMSFX|20250410|9.66|78.3355|9.66|||| funds_us_0494|AM:FMSFX|20250411|9.64|78.2001|9.64|||| funds_us_0494|AM:FMSFX|20250414|9.71|78.7761|9.71|||| funds_us_0494|AM:FMSFX|20250415|9.72|78.8658|9.72|||| funds_us_0494|AM:FMSFX|20250416|9.75|79.1178|9.75|||| funds_us_0494|AM:FMSFX|20250417|9.71|78.8031|9.71|||| funds_us_0494|AM:FMSFX|20250418|9.71|78.8298|9.71|||| funds_us_0494|AM:FMSFX|20250421|9.64|78.2711|9.64|||| funds_us_0494|AM:FMSFX|20250422|9.67|78.5229|9.67|||| funds_us_0494|AM:FMSFX|20250423|9.69|78.6938|9.69|||| funds_us_0494|AM:FMSFX|20250424|9.75|79.1894|9.75|||| funds_us_0494|AM:FMSFX|20250425|9.78|79.4593|9.78|||| funds_us_0494|AM:FMSFX|20250428|9.8|79.6303|9.8|||| funds_us_0494|AM:FMSFX|20250429|9.82|79.8102|9.82|||| funds_us_0494|AM:FMSFX|20250430|9.82|79.8102|9.82|606089256|337034415|| funds_us_0494|AM:FMSFX|20250501|9.79|79.5764|9.79|||| funds_us_0494|AM:FMSFX|20250502|9.74|79.198|9.74|||| funds_us_0494|AM:FMSFX|20250505|9.73|79.1257|9.73|||| funds_us_0494|AM:FMSFX|20250506|9.75|79.2973|9.75|||| funds_us_0494|AM:FMSFX|20250507|9.78|79.55|9.78|||| funds_us_0494|AM:FMSFX|20250508|9.72|79.0709|9.72|||| funds_us_0494|AM:FMSFX|20250509|9.73|79.1797|9.73|||| funds_us_0494|AM:FMSFX|20250512|9.68|78.7821|9.68|||| funds_us_0494|AM:FMSFX|20250513|9.67|78.7097|9.67|||| funds_us_0494|AM:FMSFX|20250514|9.64|78.4753|9.64|||| funds_us_0494|AM:FMSFX|20250515|9.69|78.8906|9.69|||| funds_us_0494|AM:FMSFX|20250516|9.7|78.9985|9.7|||| funds_us_0494|AM:FMSFX|20250519|9.69|78.9266|9.69|||| funds_us_0494|AM:FMSFX|20250520|9.66|78.6914|9.66|||| funds_us_0494|AM:FMSFX|20250521|9.59|78.1315|9.59|||| funds_us_0494|AM:FMSFX|20250522|9.61|78.303|9.61|||| funds_us_0494|AM:FMSFX|20250523|9.63|78.4932|9.63|||| funds_us_0494|AM:FMSFX|20250526|9.63|78.5022|9.63|||| funds_us_0494|AM:FMSFX|20250527|9.67|78.8362|9.67|||| funds_us_0494|AM:FMSFX|20250528|9.65|78.6826|9.65|||| funds_us_0494|AM:FMSFX|20250529|9.67|78.8542|9.67|||| funds_us_0494|AM:FMSFX|20250530|9.7|79.1162|9.7|608457499|339570403|| funds_us_0494|AM:FMSFX|20250602|9.68|78.9736|9.68|||| funds_us_0494|AM:FMSFX|20250603|9.68|78.9826|9.68|||| funds_us_0494|AM:FMSFX|20250604|9.74|79.4816|9.74|||| funds_us_0494|AM:FMSFX|20250605|9.7|79.1648|9.7|||| funds_us_0494|AM:FMSFX|20250606|9.65|78.7854|9.65|||| funds_us_0494|AM:FMSFX|20250609|9.66|78.8756|9.66|||| funds_us_0494|AM:FMSFX|20250610|9.69|79.1297|9.69|||| funds_us_0494|AM:FMSFX|20250611|9.73|79.4653|9.73|||| funds_us_0494|AM:FMSFX|20250612|9.76|79.7196|9.76|||| funds_us_0494|AM:FMSFX|20250613|9.72|79.4213|9.72|||| funds_us_0494|AM:FMSFX|20250616|9.7|79.2676|9.7|||| funds_us_0494|AM:FMSFX|20250617|9.73|79.5216|9.73|||| funds_us_0494|AM:FMSFX|20250618|9.74|79.6118|9.74|||| funds_us_0494|AM:FMSFX|20250619|9.74|79.6212|9.74|||| funds_us_0494|AM:FMSFX|20250620|9.74|79.6496|9.74|||| funds_us_0494|AM:FMSFX|20250623|9.76|79.8223|9.76|||| funds_us_0494|AM:FMSFX|20250624|9.79|80.0773|9.79|||| funds_us_0494|AM:FMSFX|20250625|9.8|80.1683|9.8|||| funds_us_0494|AM:FMSFX|20250626|9.84|80.5039|9.84|||| funds_us_0494|AM:FMSFX|20250627|9.81|80.2969|9.81|||| funds_us_0494|AM:FMSFX|20250630|9.83|80.4601|9.83|648848039|346198462|| funds_us_0494|AM:FMSFX|20250701|9.83|80.4705|9.83|||| funds_us_0494|AM:FMSFX|20250702|9.81|80.3157|9.81|||| funds_us_0494|AM:FMSFX|20250703|9.79|80.1614|9.79|||| funds_us_0494|AM:FMSFX|20250704|9.79|80.1881|9.79|||| funds_us_0494|AM:FMSFX|20250707|9.76|79.9514|9.76|||| funds_us_0494|AM:FMSFX|20250708|9.76|79.9603|9.76|||| funds_us_0494|AM:FMSFX|20250709|9.79|80.2142|9.79|||| funds_us_0494|AM:FMSFX|20250710|9.79|80.2229|9.79|||| funds_us_0494|AM:FMSFX|20250711|9.75|79.9219|9.75|||| funds_us_0494|AM:FMSFX|20250714|9.74|79.8492|9.74|||| funds_us_0494|AM:FMSFX|20250715|9.71|79.6125|9.71|||| funds_us_0494|AM:FMSFX|20250716|9.73|79.7851|9.73|||| funds_us_0494|AM:FMSFX|20250717|9.72|79.7123|9.72|||| funds_us_0494|AM:FMSFX|20250718|9.74|79.903|9.74|||| funds_us_0494|AM:FMSFX|20250721|9.76|80.0757|9.76|||| funds_us_0494|AM:FMSFX|20250722|9.78|80.2483|9.78|||| funds_us_0494|AM:FMSFX|20250723|9.75|80.0117|9.75|||| funds_us_0494|AM:FMSFX|20250724|9.74|79.9377|9.74|||| funds_us_0494|AM:FMSFX|20250725|9.76|80.1284|9.76|||| funds_us_0494|AM:FMSFX|20250728|9.75|80.0555|9.75|||| funds_us_0494|AM:FMSFX|20250729|9.79|80.3919|9.79|||| funds_us_0494|AM:FMSFX|20250730|9.77|80.2462|9.77|||| funds_us_0494|AM:FMSFX|20250731|9.76|80.1643|9.76|656896239|348903957|| funds_us_0494|AM:FMSFX|20250801|9.85|80.9315|9.85|||| funds_us_0494|AM:FMSFX|20250804|9.86|81.0226|9.86|||| funds_us_0494|AM:FMSFX|20250805|9.87|81.1137|9.87|||| funds_us_0494|AM:FMSFX|20250806|9.87|81.1225|9.87|||| funds_us_0494|AM:FMSFX|20250807|9.85|80.967|9.85|||| funds_us_0494|AM:FMSFX|20250808|9.83|80.829|9.83|||| funds_us_0494|AM:FMSFX|20250811|9.83|80.8371|9.83|||| funds_us_0494|AM:FMSFX|20250812|9.83|80.8459|9.83|||| funds_us_0494|AM:FMSFX|20250813|9.87|81.1834|9.87|||| funds_us_0494|AM:FMSFX|20250814|9.84|80.946|9.84|||| funds_us_0494|AM:FMSFX|20250815|9.82|80.8083|9.82|||| funds_us_0494|AM:FMSFX|20250818|9.81|80.7343|9.81|||| funds_us_0494|AM:FMSFX|20250819|9.83|80.9076|9.83|||| funds_us_0494|AM:FMSFX|20250820|9.83|80.9167|9.83|||| funds_us_0494|AM:FMSFX|20250821|9.82|80.8434|9.82|||| funds_us_0494|AM:FMSFX|20250822|9.86|81.1995|9.86|||| funds_us_0494|AM:FMSFX|20250825|9.85|81.1262|9.85|||| funds_us_0494|AM:FMSFX|20250826|9.87|81.2993|9.87|||| funds_us_0494|AM:FMSFX|20250827|9.88|81.3903|9.88|||| funds_us_0494|AM:FMSFX|20250828|9.89|81.4815|9.89|||| funds_us_0494|AM:FMSFX|20250829|9.88|81.426|9.88|670188404|357883461|| funds_us_0494|AM:FMSFX|20250902|9.86|81.2807|9.86|||| funds_us_0494|AM:FMSFX|20250903|9.89|81.5366|9.89|||| funds_us_0494|AM:FMSFX|20250904|9.92|81.793|9.92|||| funds_us_0494|AM:FMSFX|20250905|9.97|82.2325|9.97|||| funds_us_0494|AM:FMSFX|20250908|10.01|82.5717|10.01|||| funds_us_0494|AM:FMSFX|20250909|9.99|82.4154|9.99|||| funds_us_0494|AM:FMSFX|20250910|10|82.5067|10|||| funds_us_0494|AM:FMSFX|20250911|10.02|82.6798|10.02|||| funds_us_0494|AM:FMSFX|20250912|10.01|82.6241|10.01|||| funds_us_0494|AM:FMSFX|20250915|10.04|82.8804|10.04|||| funds_us_0494|AM:FMSFX|20250916|10.04|82.8895|10.04|||| funds_us_0494|AM:FMSFX|20250917|10.02|82.7337|10.02|||| funds_us_0494|AM:FMSFX|20250918|9.98|82.4131|9.98|||| funds_us_0494|AM:FMSFX|20250919|9.99|82.5226|9.99|||| funds_us_0494|AM:FMSFX|20250922|9.97|82.3667|9.97|||| funds_us_0494|AM:FMSFX|20250923|9.99|82.5406|9.99|||| funds_us_0494|AM:FMSFX|20250924|9.98|82.4672|9.98|||| funds_us_0494|AM:FMSFX|20250925|9.97|82.3938|9.97|||| funds_us_0494|AM:FMSFX|20250926|9.96|82.3387|9.96|||| funds_us_0494|AM:FMSFX|20250929|9.98|82.5217|9.98|||| funds_us_0494|AM:FMSFX|20250930|9.97|82.4393|9.97|679430196|364351992|| funds_us_0494|AM:FMSFX|20251001|10|82.6975|10|||| funds_us_0494|AM:FMSFX|20251002|10.02|82.8719|10.02|||| funds_us_0494|AM:FMSFX|20251003|10|82.7334|10|||| funds_us_0494|AM:FMSFX|20251006|9.98|82.5772|9.98|||| funds_us_0494|AM:FMSFX|20251007|10|82.7515|10|||| funds_us_0494|AM:FMSFX|20251008|10|82.76|10|||| funds_us_0494|AM:FMSFX|20251009|9.99|82.6862|9.99|||| funds_us_0494|AM:FMSFX|20251010|10.03|83.0437|10.03|||| funds_us_0494|AM:FMSFX|20251013|10.03|83.0516|10.03|||| funds_us_0494|AM:FMSFX|20251014|10.05|83.2263|10.05|||| funds_us_0494|AM:FMSFX|20251015|10.04|83.1528|10.04|||| funds_us_0494|AM:FMSFX|20251016|10.08|83.4927|10.08|||| funds_us_0494|AM:FMSFX|20251017|10.07|83.437|10.07|||| funds_us_0494|AM:FMSFX|20251020|10.08|83.5289|10.08|||| funds_us_0494|AM:FMSFX|20251021|10.09|83.6203|10.09|||| funds_us_0494|AM:FMSFX|20251022|10.09|83.6293|10.09|||| funds_us_0494|AM:FMSFX|20251023|10.07|83.4729|10.07|||| funds_us_0494|AM:FMSFX|20251024|10.08|83.5819|10.08|||| funds_us_0494|AM:FMSFX|20251027|10.09|83.6734|10.09|||| funds_us_0494|AM:FMSFX|20251028|10.1|83.7651|10.1|||| funds_us_0494|AM:FMSFX|20251029|10.04|83.2779|10.04|||| funds_us_0494|AM:FMSFX|20251030|10.02|83.1304|10.02|||| funds_us_0494|AM:FMSFX|20251031|10.02|83.1304|10.02|691086219|373075293|| funds_us_0494|AM:FMSFX|20251103|10.01|83.0769|10.01|||| funds_us_0494|AM:FMSFX|20251104|10.03|83.253|10.03|||| funds_us_0494|AM:FMSFX|20251105|9.99|82.9305|9.99|||| funds_us_0494|AM:FMSFX|20251106|10.03|83.2714|10.03|||| funds_us_0494|AM:FMSFX|20251107|10.03|83.2988|10.03|||| funds_us_0494|AM:FMSFX|20251110|10.02|83.2241|10.02|||| funds_us_0494|AM:FMSFX|20251111|10.04|83.3991|10.04|||| funds_us_0494|AM:FMSFX|20251112|10.04|83.4078|10.04|||| funds_us_0494|AM:FMSFX|20251113|10.01|83.1679|10.01|||| funds_us_0494|AM:FMSFX|20251114|10|83.1122|10|||| funds_us_0494|AM:FMSFX|20251117|10|83.1212|10|||| funds_us_0494|AM:FMSFX|20251118|10|83.1303|10|||| funds_us_0494|AM:FMSFX|20251119|9.99|83.0566|9.99|||| funds_us_0494|AM:FMSFX|20251120|10|83.1488|10|||| funds_us_0494|AM:FMSFX|20251121|10.03|83.4249|10.03|||| funds_us_0494|AM:FMSFX|20251124|10.04|83.5079|10.04||||