XML 19 R4.htm IDEA: XBRL DOCUMENT v2.4.1.9
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName BMO FUNDS, INC.
Prospectus Date rr_ProspectusDate Dec. 29, 2014
Document Creation Date dei_DocumentCreationDate Apr. 21, 2015