XML 10 R4.htm IDEA: XBRL DOCUMENT v3.10.0.1
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName COLUMBIA FUNDS SERIES TRUST
Prospectus Date rr_ProspectusDate Jul. 01, 2017
Document Creation Date dei_DocumentCreationDate Jun. 29, 2018