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Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended 108 Months Ended 132 Months Ended
Feb. 28, 2026
Feb. 28, 2026
Feb. 28, 2026
C000020463_LG_ClassMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Wireless Portfolio</span>
C000020463_ClassMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value $ 10,000    
C000020463_ClassMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 12,409    
C000020463_ClassMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 14,544    
C000020463_ClassMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 14,575    
C000020463_ClassMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 17,929    
C000020463_ClassMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 24,400    
C000020463_ClassMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 25,474    
C000020463_ClassMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 21,707    
C000020463_ClassMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 26,011    
C000020463_ClassMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 30,772    
C000020463_ClassMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 34,580    
C000020463_LG_1_AdditionalIndexMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Fidelity Wireless Index℠</span>
C000020463_1_AdditionalIndexMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020463_1_AdditionalIndexMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 11,577    
C000020463_1_AdditionalIndexMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 13,016    
C000020463_1_AdditionalIndexMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 13,316    
C000020463_1_AdditionalIndexMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 15,361    
C000020463_1_AdditionalIndexMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 19,402    
C000020463_1_AdditionalIndexMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 21,441    
C000020463_1_AdditionalIndexMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 18,894    
C000020463_1_AdditionalIndexMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 20,010    
C000020463_1_AdditionalIndexMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 23,810    
C000020463_1_AdditionalIndexMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 28,728    
C000020463_LG_2_AdditionalIndexMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span>
C000020463_2_AdditionalIndexMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020463_2_AdditionalIndexMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 12,498    
C000020463_2_AdditionalIndexMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 14,635    
C000020463_2_AdditionalIndexMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 15,320    
C000020463_2_AdditionalIndexMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 16,575    
C000020463_2_AdditionalIndexMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 21,761    
C000020463_2_AdditionalIndexMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 25,327    
C000020463_2_AdditionalIndexMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 23,379    
C000020463_2_AdditionalIndexMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 30,499    
C000020463_2_AdditionalIndexMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 36,113    
C000020463_2_AdditionalIndexMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 42,249    
C000020462_LG_ClassMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Utilities Portfolio</span>
C000020462_ClassMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020462_ClassMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 11,821    
C000020462_ClassMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 12,411    
C000020462_ClassMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 14,915    
C000020462_ClassMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 16,309    
C000020462_ClassMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 16,301    
C000020462_ClassMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 19,429    
C000020462_ClassMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 19,713    
C000020462_ClassMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 20,897    
C000020462_ClassMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 27,975    
C000020462_ClassMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 34,777    
C000020462_LG_1_AdditionalIndexMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">MSCI U.S. IMI Utilities 25-50 Index</span>
C000020462_1_AdditionalIndexMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020462_1_AdditionalIndexMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 11,726    
C000020462_1_AdditionalIndexMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 11,545    
C000020462_1_AdditionalIndexMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 13,989    
C000020462_1_AdditionalIndexMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 15,491    
C000020462_1_AdditionalIndexMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 15,072    
C000020462_1_AdditionalIndexMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 17,972    
C000020462_1_AdditionalIndexMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 17,795    
C000020462_1_AdditionalIndexMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 17,431    
C000020462_1_AdditionalIndexMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 22,957    
C000020462_1_AdditionalIndexMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 28,377    
C000020462_LG_2_AdditionalIndexMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span>
C000020462_2_AdditionalIndexMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020462_2_AdditionalIndexMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 12,498    
C000020462_2_AdditionalIndexMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 14,635    
C000020462_2_AdditionalIndexMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 15,320    
C000020462_2_AdditionalIndexMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 16,575    
C000020462_2_AdditionalIndexMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 21,761    
C000020462_2_AdditionalIndexMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 25,327    
C000020462_2_AdditionalIndexMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 23,379    
C000020462_2_AdditionalIndexMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 30,499    
C000020462_2_AdditionalIndexMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 36,113    
C000020462_2_AdditionalIndexMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 42,249    
C000020461_LG_ClassMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Transportation Portfolio</span>
C000020461_ClassMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020461_ClassMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 12,940    
C000020461_ClassMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 14,555    
C000020461_ClassMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 15,553    
C000020461_ClassMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 13,921    
C000020461_ClassMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 18,741    
C000020461_ClassMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 22,554    
C000020461_ClassMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 22,450    
C000020461_ClassMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 26,295    
C000020461_ClassMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 27,492    
C000020461_ClassMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 32,738    
C000020461_LG_1_AdditionalIndexMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">MSCI U.S. IMI Transportation 25-50 Index</span>
C000020461_1_AdditionalIndexMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020461_1_AdditionalIndexMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 13,141    
C000020461_1_AdditionalIndexMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 14,947    
C000020461_1_AdditionalIndexMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 15,653    
C000020461_1_AdditionalIndexMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 14,409    
C000020461_1_AdditionalIndexMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 20,806    
C000020461_1_AdditionalIndexMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 23,471    
C000020461_1_AdditionalIndexMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 21,414    
C000020461_1_AdditionalIndexMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 25,513    
C000020461_1_AdditionalIndexMember_AsOf_2025Member      
Account Value [Line Items]      
Accumulated Value 25,320    
C000020461_1_AdditionalIndexMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 29,611    
C000020461_LG_2_AdditionalIndexMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span>
C000020461_2_AdditionalIndexMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020461_2_AdditionalIndexMember_AsOf_2017Member      
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Accumulated Value 12,498    
C000020461_2_AdditionalIndexMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 14,635    
C000020461_2_AdditionalIndexMember_AsOf_2019Member      
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Accumulated Value 15,320    
C000020461_2_AdditionalIndexMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 16,575    
C000020461_2_AdditionalIndexMember_AsOf_2021Member      
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Accumulated Value 21,761    
C000020461_2_AdditionalIndexMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 25,327    
C000020461_2_AdditionalIndexMember_AsOf_2023Member      
Account Value [Line Items]      
Accumulated Value 23,379    
C000020461_2_AdditionalIndexMember_AsOf_2024Member      
Account Value [Line Items]      
Accumulated Value 30,499    
C000020461_2_AdditionalIndexMember_AsOf_2025Member      
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Accumulated Value 36,113    
C000020461_2_AdditionalIndexMember_AsOf_2026Member      
Account Value [Line Items]      
Accumulated Value 42,249    
C000020459_LG_ClassMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">Telecommunications Portfolio</span>
C000020459_ClassMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020459_ClassMember_AsOf_2017Member      
Account Value [Line Items]      
Accumulated Value 11,906    
C000020459_ClassMember_AsOf_2018Member      
Account Value [Line Items]      
Accumulated Value 11,458    
C000020459_ClassMember_AsOf_2019Member      
Account Value [Line Items]      
Accumulated Value 11,845    
C000020459_ClassMember_AsOf_2020Member      
Account Value [Line Items]      
Accumulated Value 13,326    
C000020459_ClassMember_AsOf_2021Member      
Account Value [Line Items]      
Accumulated Value 15,878    
C000020459_ClassMember_AsOf_2022Member      
Account Value [Line Items]      
Accumulated Value 14,927    
C000020459_ClassMember_AsOf_2023Member      
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Accumulated Value 13,777    
C000020459_ClassMember_AsOf_2024Member      
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Accumulated Value 13,594    
C000020459_ClassMember_AsOf_2025Member      
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Accumulated Value 18,258    
C000020459_ClassMember_AsOf_2026Member      
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Accumulated Value 21,152    
C000020459_LG_1_AdditionalIndexMember_11YRMember      
Account Value [Line Items]      
Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">MSCI U.S. IM Telecommunication Services 25-50 Index</span>
C000020459_1_AdditionalIndexMember_AsOf_2016Member      
Account Value [Line Items]      
Accumulated Value 10,000    
C000020459_1_AdditionalIndexMember_AsOf_2017Member      
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Accumulated Value 11,377    
C000020459_1_AdditionalIndexMember_AsOf_2018Member      
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Accumulated Value 10,475    
C000020459_1_AdditionalIndexMember_AsOf_2019Member      
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Accumulated Value 10,454    
C000020459_1_AdditionalIndexMember_AsOf_2020Member      
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Accumulated Value 11,359    
C000020459_1_AdditionalIndexMember_AsOf_2021Member      
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Accumulated Value 12,702    
C000020459_1_AdditionalIndexMember_AsOf_2022Member      
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Accumulated Value 11,945    
C000020459_1_AdditionalIndexMember_AsOf_2023Member      
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Accumulated Value 11,007    
C000020459_1_AdditionalIndexMember_AsOf_2024Member      
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Accumulated Value 10,924    
C000020459_1_AdditionalIndexMember_AsOf_2025Member      
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Accumulated Value 15,571    
C000020459_1_AdditionalIndexMember_AsOf_2026Member      
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Accumulated Value 19,240    
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Line Graph and Table Measure Name     <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span>
C000020459_2_AdditionalIndexMember_AsOf_2016Member      
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Accumulated Value 10,000    
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Accumulated Value 12,498    
C000020459_2_AdditionalIndexMember_AsOf_2018Member      
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Accumulated Value 14,635    
C000020459_2_AdditionalIndexMember_AsOf_2019Member      
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Accumulated Value 15,320    
C000020459_2_AdditionalIndexMember_AsOf_2020Member      
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Accumulated Value 16,575    
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Accumulated Value 21,761    
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Accumulated Value 25,327    
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Accumulated Value 30,499    
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Accumulated Value 36,113    
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Line Graph and Table Measure Name   <span style="font-family:'Fidelity Sans';font-size:9px;color:#000000;font-style:normal;font-weight:normal;">S&P 500® Index</span>  
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