XML 18 R26.htm IDEA: XBRL DOCUMENT v3.8.0.1
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName BMO FUNDS, INC.
Prospectus Date rr_ProspectusDate Dec. 29, 2017
Document Creation Date dei_DocumentCreationDate Jun. 22, 2018