XML 13 R9.htm IDEA: XBRL DOCUMENT v3.3.1.900
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName Fidelity Trend Fund
Prospectus Date rr_ProspectusDate Feb. 29, 2016
Document Creation Date dei_DocumentCreationDate Feb. 26, 2016