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Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName FIDELITY INVESTMENT TRUST
Prospectus Date rr_ProspectusDate Dec. 29, 2012
Inst | Fidelity Emerging Markets Discovery Fund
 
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] fit_SupplementTextBlock Supplement to the
Fidelity Advisor® Emerging Markets Discovery Fund
Institutional Class
December 29, 2012
Prospectus


The following information replaces similar information found in the "Fund Summary" section under the heading "Fee Table" on page 4.

1 year
$ 153
3 years
$ 810
5 years
$ 1,523
10 years
$ 3,416