<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:country="http://xbrl.sec.gov/country/2025"
  xmlns:dei="http://xbrl.sec.gov/dei/2025"
  xmlns:fmr="http://www.fidelity.com/20260401"
  xmlns:iso4217="http://www.xbrl.org/2003/iso4217"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:oef="http://xbrl.sec.gov/oef/2025"
  xmlns:us-gaap="http://fasb.org/us-gaap/2025"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="fmr-20260401.xsd" xlink:type="simple"/>
    <context id="C000121123_ClassMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_LG_ClassMember_11YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_LG_ClassMember_11YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2016">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2016Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2017">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2017Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2018">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2018Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2019">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2019Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2020">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2020Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2021">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2021Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2022">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2022Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2023">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2023Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2024">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2024Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2025">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2025Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_ClassMember_AsOf_2026">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_ClassMember_AsOf_2026Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_LG_1_AdditionalIndexMember_11YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_LG_1_AdditionalIndexMember_11YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2016">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2016Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2017">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2017Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2018">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2018Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2019">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2019Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2020">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2020Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2021">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2021Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2022">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2022Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2023">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2023Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2024">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2024Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2025">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2025Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_AdditionalIndexMember_AsOf_2026">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_1_AdditionalIndexMember_AsOf_2026Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_LG_2_AdditionalIndexMember_11YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_LG_2_AdditionalIndexMember_11YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2015-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2016">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2016Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2017">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2017Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2018">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2018Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2019">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2019Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2020">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2020Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2021">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2021Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2022">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2022Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2023">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2023Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2024">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2024Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2025">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2025Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_2_AdditionalIndexMember_AsOf_2026">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_2_AdditionalIndexMember_AsOf_2026Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_NoLoadClassMember_1YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_NoLoadClassMember_1YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_NoLoadClassMember_5YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_NoLoadClassMember_5YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_NoLoadClassMember_10YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_NoLoadClassMember_10YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_0_AdditionalIndexMember_1YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_0_AdditionalIndexMember_1YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_0_AdditionalIndexMember_5YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_0_AdditionalIndexMember_5YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_0_AdditionalIndexMember_10YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:AdditionalIndexAxis">fmr:C000121123_0_AdditionalIndexMember_10YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_BBIndexMember_1YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">fmr:C000121123_1_BBIndexMember_1YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_BBIndexMember_5YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">fmr:C000121123_1_BBIndexMember_5YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2021-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_1_BBIndexMember_10YR">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:BroadBasedIndexAxis">fmr:C000121123_1_BBIndexMember_10YRMember</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2016-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <context id="C000121123_InstantMember">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TI_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:IndustrySectorAxis">fmr:TI9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_AA_CommonStocks_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AACommonStocksMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="us-gaap:InvestmentTypeAxis">fmr:AAShortTermInvestmentsandNetOtherAssetsLiabilitiesMember</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_GD_US_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:US</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_GD_DE_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:DE</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_GD_CA_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:GeographicRegionAxis">country:CA</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_0_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH0Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_1_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH1Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_2_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH2Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_3_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH3Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_4_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH4Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_5_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH5Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_6_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH6Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_7_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH7Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_8_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH8Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="C000121123_TH_9_Member">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
            <segment>
                <xbrldi:explicitMember dimension="oef:ClassAxis">fmr:C000121123Member</xbrldi:explicitMember>
                <xbrldi:explicitMember dimension="oef:LargestHoldingAxis">fmr:TH9Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <instant>2026-01-31</instant>
        </period>
    </context>
    <context id="Trust">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000320351</identifier>
        </entity>
        <period>
            <startDate>2025-01-31</startDate>
            <endDate>2026-01-31</endDate>
        </period>
    </context>
    <unit id="usd">
        <measure>iso4217:USD</measure>
    </unit>
    <unit id="pure">
        <measure>pure</measure>
    </unit>
    <unit id="holding">
        <measure>shares</measure>
    </unit>
    <dei:DocumentType contextRef="Trust" id="ixv-6240">N-CSR</dei:DocumentType>
    <dei:AmendmentFlag contextRef="Trust" id="ixv-6241">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey contextRef="Trust" id="ixv-6242">0000320351</dei:EntityCentralIndexKey>
    <dei:EntityInvCompanyType contextRef="Trust" id="ixv-6243">N-1A</dei:EntityInvCompanyType>
    <dei:EntityRegistrantName contextRef="Trust" id="ixv-6244">Fidelity Select Portfolios</dei:EntityRegistrantName>
    <dei:DocumentPeriodEndDate contextRef="Trust" id="ixv-96">2026-01-31</dei:DocumentPeriodEndDate>
    <oef:MaterialFundChngNoticeTextBlock contextRef="C000121123_ClassMember" id="ixv-100">This report describes changes to the Fund that occurred during the reporting period.</oef:MaterialFundChngNoticeTextBlock>
    <oef:FundName contextRef="C000121123_ClassMember" id="ixv-111">Fidelity&#xae; Telecom and Utilities Fund</oef:FundName>
    <oef:ClassName contextRef="C000121123_ClassMember" id="ixv-114">Fidelity&#xae; Telecom and Utilities Fund</oef:ClassName>
    <dei:TradingSymbol contextRef="C000121123_ClassMember" id="ixv-118">FIUIX</dei:TradingSymbol>
    <oef:AnnlOrSemiAnnlStatementTextBlock contextRef="C000121123_ClassMember" id="ixv-137">This annual shareholder report contains information about Fidelity&#xae; Telecom and Utilities Fund for the period February 1, 2025 to January 31, 2026.</oef:AnnlOrSemiAnnlStatementTextBlock>
    <oef:ShareholderReportAnnualOrSemiAnnual contextRef="C000121123_ClassMember" id="ixv-139">annual shareholder report</oef:ShareholderReportAnnualOrSemiAnnual>
    <oef:AddlInfoTextBlock contextRef="C000121123_ClassMember" id="ixv-144">You can find additional information about the Fund at fundresearch.fidelity.com/prospectus/sec. You can also request this information by contacting us at 1-800-544-8544 or by sending an e-mail to fidfunddocuments@fidelity.com.</oef:AddlInfoTextBlock>
    <oef:AddlInfoWebsite contextRef="C000121123_ClassMember" id="ixv-146">fundresearch.fidelity.com/prospectus/sec</oef:AddlInfoWebsite>
    <oef:AddlInfoPhoneNumber contextRef="C000121123_ClassMember" id="ixv-149">1-800-544-8544</oef:AddlInfoPhoneNumber>
    <oef:AddlInfoEmail contextRef="C000121123_ClassMember" id="ixv-152">fidfunddocuments@fidelity.com</oef:AddlInfoEmail>
    <oef:ExpensesTextBlock contextRef="C000121123_ClassMember" id="ixv-159">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What were your Fund costs for the last year?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(based on hypothetical $10,000 investment)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;FUND COST (PREVIOUS YEAR)&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:51%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:21%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs of a $10,000 investment&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:27%; background-color:#dfe0e4;border:1px solid #dfe0e4;padding:0px 0px 0px 0px;" valign="bottom"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;Costs paid as a percentage of a $10,000 investment &lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:51%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Telecom and Utilities Fund&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:21%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$ &lt;/span&gt;72&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:27%; border-bottom:1px solid #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:center;text-align-last:auto;"&gt;0.68&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:1%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:ExpensesTextBlock>
    <oef:ExpensesPaidAmt
      contextRef="C000121123_ClassMember"
      decimals="0"
      id="ixv-6835"
      unitRef="usd">72</oef:ExpensesPaidAmt>
    <oef:ExpenseRatioPct
      contextRef="C000121123_ClassMember"
      decimals="INF"
      id="ixv-6836"
      unitRef="pure">0.0068</oef:ExpenseRatioPct>
    <oef:FactorsAffectingPerfTextBlock contextRef="C000121123_ClassMember" id="ixv-201">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;What affected the Fund's performance this period?&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;U.S. stocks achieved a strong gain for the 12 months ending January 31, 2026, extending a historically fast rebound that began in early April, bolstered by strong corporate fundamentals, a resilient economy and, beginning in September, the Federal Reserve's first interest-rate reductions since December 2024.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Against this backdrop, market selection was the primary detractor from the fund's performance versus the Russell 3000 Telecom and Utilities Select Index for the fiscal year, especially an overweight in the independent power producers &amp;amp; energy traders industry. Stock picks in electric utilities also hampered the fund's result. Also detracting from our result was an overweight in the cable &amp;amp; satellite industry.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;The largest individual relative detractor was an overweight in Constellation Energy (-6%). The stock was one of our biggest holdings. A second notable relative detractor was an overweight in NRG Energy (+3%). This was a position we established this period. The stock was among our largest holdings at period end. Another notable relative detractor was our stake in Verizon Communications (+21%). The company was the fund's second-largest holding at period end.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;In contrast, the primary contributor to performance versus the sector index was stock picking in coal &amp;amp; consumable fuels, a segment that is not part of the index. Picks and an overweight in the heavy electrical equipment category also boosted relative performance. Also helping our relative result was stock selection in the cable &amp;amp; satellite industry.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;The top individual relative contributor was our stake in Cameco (+144%). This was a position we established this period. A second notable relative contributor was our stake in GE Vernova (+89%), which we reduced. Another notable relative contributor was our stake in Nextpower (+97%). This was a stake we established this period. All these contributors were non-index positions.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;text-indent:-24px;margin-bottom:2px;margin-left:24px;margin-top:5px;margin-right:0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#x2022;&lt;span style="padding-right:10px"&gt;&lt;/span&gt;Notable changes in positioning include lower allocations to the integrated telecommunication services and wireless telecommunication services industries.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:FactorsAffectingPerfTextBlock>
    <oef:LineGraphTableTextBlock contextRef="C000121123_ClassMember" id="ixv-225">How did the Fund perform over the past 10 years?

 &#160;&#160;
CUMULATIVE PERFORMANCE
January 31, 2016 through January 31, 2026.
Initial investment of $10,000.
Fidelity&#xae; Telecom and Utilities Fund


$10,000

$11,741


$12,901


$13,728


$16,613


$16,369


$17,399


$18,776


$18,984


$25,429


$28,386



Russell 3000&#xae; Telecom and Utilities Select Index


$10,000

$11,449


$12,000


$12,676


$15,813


$14,819


$15,979


$16,277


$15,243


$19,657


$22,396



S&amp;P 500&#xae; Index


$10,000

$12,004


$15,174


$14,823


$18,037


$21,148


$26,074


$23,932


$28,914


$36,541


$42,515



&#160;

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

2026









&#160;
</oef:LineGraphTableTextBlock>
    <oef:LineGraphAndTableMeasureName contextRef="C000121123_LG_ClassMember_11YR" id="ixv-244">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fidelity&#xae; Telecom and Utilities Fund&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2016"
      decimals="0"
      id="ixv-6837"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2017"
      decimals="0"
      id="ixv-6838"
      unitRef="usd">11741</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2018"
      decimals="0"
      id="ixv-6839"
      unitRef="usd">12901</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2019"
      decimals="0"
      id="ixv-6840"
      unitRef="usd">13728</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2020"
      decimals="0"
      id="ixv-6841"
      unitRef="usd">16613</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2021"
      decimals="0"
      id="ixv-6842"
      unitRef="usd">16369</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2022"
      decimals="0"
      id="ixv-6843"
      unitRef="usd">17399</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2023"
      decimals="0"
      id="ixv-6844"
      unitRef="usd">18776</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2024"
      decimals="0"
      id="ixv-6845"
      unitRef="usd">18984</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2025"
      decimals="0"
      id="ixv-6846"
      unitRef="usd">25429</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_ClassMember_AsOf_2026"
      decimals="0"
      id="ixv-6847"
      unitRef="usd">28386</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000121123_LG_1_AdditionalIndexMember_11YR"
      id="ixv-293">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;Russell 3000&#xae; Telecom and Utilities Select Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-6848"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-6849"
      unitRef="usd">11449</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-6850"
      unitRef="usd">12000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-6851"
      unitRef="usd">12676</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-6852"
      unitRef="usd">15813</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-6853"
      unitRef="usd">14819</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-6854"
      unitRef="usd">15979</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-6855"
      unitRef="usd">16277</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-6856"
      unitRef="usd">15243</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-6857"
      unitRef="usd">19657</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_1_AdditionalIndexMember_AsOf_2026"
      decimals="0"
      id="ixv-6858"
      unitRef="usd">22396</oef:AccmVal>
    <oef:LineGraphAndTableMeasureName
      contextRef="C000121123_LG_2_AdditionalIndexMember_11YR"
      id="ixv-342">&lt;span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;"&gt;S&amp;amp;P 500&#xae; Index&lt;/span&gt;</oef:LineGraphAndTableMeasureName>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2016"
      decimals="0"
      id="ixv-6859"
      unitRef="usd">10000</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2017"
      decimals="0"
      id="ixv-6860"
      unitRef="usd">12004</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2018"
      decimals="0"
      id="ixv-6861"
      unitRef="usd">15174</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2019"
      decimals="0"
      id="ixv-6862"
      unitRef="usd">14823</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2020"
      decimals="0"
      id="ixv-6863"
      unitRef="usd">18037</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2021"
      decimals="0"
      id="ixv-6864"
      unitRef="usd">21148</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2022"
      decimals="0"
      id="ixv-6865"
      unitRef="usd">26074</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2023"
      decimals="0"
      id="ixv-6866"
      unitRef="usd">23932</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2024"
      decimals="0"
      id="ixv-6867"
      unitRef="usd">28914</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2025"
      decimals="0"
      id="ixv-6868"
      unitRef="usd">36541</oef:AccmVal>
    <oef:AccmVal
      contextRef="C000121123_2_AdditionalIndexMember_AsOf_2026"
      decimals="0"
      id="ixv-6869"
      unitRef="usd">42515</oef:AccmVal>
    <oef:AvgAnnlRtrTableTextBlock contextRef="C000121123_ClassMember" id="ixv-443">AVERAGE ANNUAL TOTAL RETURNS:

&#160;

1 Year

5 Year

10 Year


Fidelity&#xae; Telecom and Utilities Fund

11.63%

11.64%

11.00%


Russell 3000&#xae; Telecom and Utilities Select Index

13.93%


8.61%


8.40%


S&amp;P 500&#xae; Index

16.35%


14.99%


15.57%




&#160;
&#160;
Visit www.fidelity.com for more recent performance information.&#160;

&#160;


The Fund's past performance is not a good predictor of the Fund's future performance. &#160;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.





</oef:AvgAnnlRtrTableTextBlock>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_NoLoadClassMember_1YR"
      decimals="INF"
      id="ixv-6870"
      unitRef="pure">0.1163</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_NoLoadClassMember_5YR"
      decimals="INF"
      id="ixv-6871"
      unitRef="pure">0.1164</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_NoLoadClassMember_10YR"
      decimals="INF"
      id="ixv-6872"
      unitRef="pure">0.1100</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_0_AdditionalIndexMember_1YR"
      decimals="INF"
      id="ixv-6873"
      unitRef="pure">0.1393</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_0_AdditionalIndexMember_5YR"
      decimals="INF"
      id="ixv-6874"
      unitRef="pure">0.0861</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_0_AdditionalIndexMember_10YR"
      decimals="INF"
      id="ixv-6875"
      unitRef="pure">0.0840</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_1_BBIndexMember_1YR"
      decimals="INF"
      id="ixv-6876"
      unitRef="pure">0.1635</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_1_BBIndexMember_5YR"
      decimals="INF"
      id="ixv-6877"
      unitRef="pure">0.1499</oef:AvgAnnlRtrPct>
    <oef:AvgAnnlRtrPct
      contextRef="C000121123_1_BBIndexMember_10YR"
      decimals="INF"
      id="ixv-6878"
      unitRef="pure">0.1557</oef:AvgAnnlRtrPct>
    <oef:UpdPerfInfoLocationTextBlock contextRef="C000121123_ClassMember" id="ixv-513">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Visit &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;www.fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; for more recent performance information.&lt;/span&gt;</oef:UpdPerfInfoLocationTextBlock>
    <oef:PerformancePastDoesNotIndicateFuture contextRef="C000121123_ClassMember" id="ixv-525">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:italic;font-weight:normal;"&gt;The Fund's past performance is not a good predictor of the Fund's future performance.&lt;/span&gt;</oef:PerformancePastDoesNotIndicateFuture>
    <oef:NoDeductionOfTaxesTextBlock contextRef="C000121123_ClassMember" id="ixv-529">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.&lt;/span&gt;</oef:NoDeductionOfTaxesTextBlock>
    <oef:AddlFundStatisticsTextBlock contextRef="C000121123_ClassMember" id="ixv-535">&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;Key Fund Statistics&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;(as of January 31, 2026)&lt;/span&gt;&lt;/div&gt;
&lt;div&gt;&lt;span style="font-size:11px;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="1" style="border-collapse:separate;border-style:none;margin:auto;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:63%; " valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:bold;"&gt;KEY FACTS&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt; &lt;span&gt;&#160;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Fund Size&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;1,407,734,209&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Number of Holdings&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;40&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Total Advisory Fee&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;$&lt;/span&gt;11,711,169&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="middle"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;&lt;td style="width:63%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Portfolio Turnover&lt;/span&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:32%; border-bottom:1px dashed #000000;padding:0px 0px 0px 0px;" valign="middle"&gt;&lt;div style="text-align:right;text-align-last:auto;"&gt;94&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;%&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:right;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:5%; " valign="top"&gt;&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:AddlFundStatisticsTextBlock>
    <us-gaap:AssetsNet
      contextRef="C000121123_InstantMember"
      decimals="0"
      id="ixv-6879"
      unitRef="usd">1407734209</us-gaap:AssetsNet>
    <oef:HoldingsCount
      contextRef="C000121123_InstantMember"
      decimals="INF"
      id="ixv-6880"
      unitRef="holding">40</oef:HoldingsCount>
    <oef:AdvisoryFeesPaidAmt
      contextRef="C000121123_ClassMember"
      decimals="0"
      id="ixv-6881"
      unitRef="usd">11711169</oef:AdvisoryFeesPaidAmt>
    <us-gaap:InvestmentCompanyPortfolioTurnover
      contextRef="C000121123_ClassMember"
      decimals="INF"
      id="ixv-6882"
      unitRef="pure">0.94</us-gaap:InvestmentCompanyPortfolioTurnover>
    <oef:HoldingsTableTextBlock contextRef="C000121123_ClassMember" id="ixv-610">
&#160;
&#160;
&#160;
TOP INDUSTRIES
(% of Fund's net assets)


Electric Utilities

47.3

&#160;


Multi-Utilities

14.9

&#160;


Diversified Telecommunication Services

14.3

&#160;


Independent Power and Renewable Electricity Producers

6.0

&#160;


Wireless Telecommunication Services

5.3

&#160;


Electrical Equipment

3.7

&#160;


Media

2.2

&#160;


Construction &amp; Engineering

2.2

&#160;


Commercial Services &amp; Supplies

1.2

&#160;


Others

1.1

&#160;


&#160;




&#160;
Common Stocks

98.2


Short-Term Investments and Net Other Assets (Liabilities)

1.8




ASSET ALLOCATION (% of Fund's net assets)


&#160;



&#160;

Common Stocks - 98.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Short-Term Investments and Net Other Assets (Liabilities) - 1.8


&#160;






United States

99.1


Germany

0.7


Canada

0.2




GEOGRAPHIC DIVERSIFICATION (% of Fund's net assets)


&#160;



&#160;

United States - 99.1&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Germany - 0.7&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;


&#160;

Canada - 0.2&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;




&#160;




&#160;
&#160;
</oef:HoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000121123_TI_0_Member"
      decimals="INF"
      id="ixv-6883"
      unitRef="pure">0.473</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_1_Member"
      decimals="INF"
      id="ixv-6884"
      unitRef="pure">0.149</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_2_Member"
      decimals="INF"
      id="ixv-6885"
      unitRef="pure">0.143</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_3_Member"
      decimals="INF"
      id="ixv-6886"
      unitRef="pure">0.060</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_4_Member"
      decimals="INF"
      id="ixv-6887"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_5_Member"
      decimals="INF"
      id="ixv-6888"
      unitRef="pure">0.037</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_6_Member"
      decimals="INF"
      id="ixv-6889"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_7_Member"
      decimals="INF"
      id="ixv-6890"
      unitRef="pure">0.022</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_8_Member"
      decimals="INF"
      id="ixv-6891"
      unitRef="pure">0.012</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TI_9_Member"
      decimals="INF"
      id="ixv-6892"
      unitRef="pure">0.011</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_AA_CommonStocks_Member"
      decimals="INF"
      id="ixv-6893"
      unitRef="pure">0.982</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_AA_ShortTermInvestmentsandNetOtherAssetsLiabilities_Member"
      decimals="INF"
      id="ixv-6894"
      unitRef="pure">0.018</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_GD_US_Member"
      decimals="INF"
      id="ixv-6895"
      unitRef="pure">0.991</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_GD_DE_Member"
      decimals="INF"
      id="ixv-6896"
      unitRef="pure">0.007</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_GD_CA_Member"
      decimals="INF"
      id="ixv-6897"
      unitRef="pure">0.002</oef:PctOfNav>
    <oef:LargestHoldingsTableTextBlock contextRef="C000121123_ClassMember" id="ixv-846">TOP HOLDINGS(% of Fund's net assets)

&#160;

&#160;


NextEra Energy Inc

11.7


&#160;


Verizon Communications Inc

7.9


&#160;


Constellation Energy Corp

6.2


&#160;


AT&amp;T Inc

6.1


&#160;


Sempra

5.6


&#160;


T-Mobile US Inc

5.3


&#160;


NRG Energy Inc

5.1


&#160;


Vistra Corp

4.6


&#160;


Entergy Corp

4.1


&#160;


Exelon Corp

3.8


&#160;


&#160;

60.4

&#160;



</oef:LargestHoldingsTableTextBlock>
    <oef:PctOfNav
      contextRef="C000121123_TH_0_Member"
      decimals="INF"
      id="ixv-6898"
      unitRef="pure">0.117</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_1_Member"
      decimals="INF"
      id="ixv-6899"
      unitRef="pure">0.079</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_2_Member"
      decimals="INF"
      id="ixv-6900"
      unitRef="pure">0.062</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_3_Member"
      decimals="INF"
      id="ixv-6901"
      unitRef="pure">0.061</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_4_Member"
      decimals="INF"
      id="ixv-6902"
      unitRef="pure">0.056</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_5_Member"
      decimals="INF"
      id="ixv-6903"
      unitRef="pure">0.053</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_6_Member"
      decimals="INF"
      id="ixv-6904"
      unitRef="pure">0.051</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_7_Member"
      decimals="INF"
      id="ixv-6905"
      unitRef="pure">0.046</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_8_Member"
      decimals="INF"
      id="ixv-6906"
      unitRef="pure">0.041</oef:PctOfNav>
    <oef:PctOfNav
      contextRef="C000121123_TH_9_Member"
      decimals="INF"
      id="ixv-6907"
      unitRef="pure">0.038</oef:PctOfNav>
    <oef:MaterialFundChngTextBlock contextRef="C000121123_ClassMember" id="ixv-971">
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:16px;color:#368627;font-style:normal;font-weight:bold;"&gt;How has the Fund changed?&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since February 1, 2025. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;April 1, 2026 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;span style="line-height:11px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;table cellpadding="0" cellspacing="0" style="border-collapse:collapse;border-style:none;" width="100%"&gt;&lt;tr&gt;&lt;td style="width:50%; background-color:#ebf3e9;border-right:2px dashed #368627;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Operating expenses&lt;/span&gt;&lt;/li&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Performance adjustment fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;td style="width:50%; background-color:#ebf3e9;padding:19px 19px 19px 19px;" valign="top"&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;/td&gt;
&lt;/tr&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngTextBlock>
    <oef:SummaryOfChngLegendTextBlock contextRef="C000121123_ClassMember" id="ixv-977">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;This is a summary of certain changes to the Fund since February 1, 2025. For more complete information, you may review the Fund's next prospectus, which we expect to be available by&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:12px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;April 1, 2026 at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or upon request at &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:0px;color:#000000;font-style:normal;font-weight:normal;"&gt;&#160;&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt; or by sending an e-mail to &lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;.&lt;/span&gt;</oef:SummaryOfChngLegendTextBlock>
    <oef:UpdProspectusWebAddress contextRef="C000121123_ClassMember" id="ixv-981">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:bold;"&gt;fundresearch.fidelity.com/prospectus/sec&lt;/span&gt;</oef:UpdProspectusWebAddress>
    <oef:UpdProspectusPhoneNumber contextRef="C000121123_ClassMember" id="ixv-984">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;1-800-544-8544&lt;/span&gt;</oef:UpdProspectusPhoneNumber>
    <oef:UpdProspectusEmailAddress contextRef="C000121123_ClassMember" id="ixv-988">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;fidfunddocuments@fidelity.com&lt;/span&gt;</oef:UpdProspectusEmailAddress>
    <oef:MaterialFundChngExpensesTextBlock contextRef="C000121123_ClassMember" id="ixv-999">&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;The fees associated with this class changed during the reporting year. The variations in class fees are primarily the result of the following changes:&lt;/span&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;ul style="color:#000000;list-style-type:disc;margin:0px 0px 0px 25px;padding:0px;"&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Management fee&lt;/span&gt;&lt;/li&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Operating expenses&lt;/span&gt;&lt;/li&gt;&lt;li style="margin:5px 0px 2px 24px;padding:0px 0px 0px 0px;"&gt;&lt;span style="font-family:'Fidelity Sans';font-size:11px;color:#000000;font-style:normal;font-weight:normal;"&gt;Performance adjustment fee&lt;/span&gt;&lt;/li&gt;&lt;/ul&gt;
&lt;span style="line-height:12px;"&gt;&#160;&lt;/span&gt;&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;
&lt;div style="text-align:left;text-align-last:auto;"&gt;&lt;/div&gt;</oef:MaterialFundChngExpensesTextBlock>
</xbrl>
