XML 16 R4.htm IDEA: XBRL DOCUMENT v2.4.1.9
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName COLUMBIA FUNDS SERIES TRUST
Prospectus Date rr_ProspectusDate Jan. 20, 2015
Document Creation Date dei_DocumentCreationDate Jan. 20, 2015