v3.23.4
Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Document Type dei_DocumentType 485BPOS
Period End Date dei_DocumentPeriodEndDate Oct. 31, 2023
Registrant Name dei_EntityRegistrantName HARBOR FUNDS II
CIK dei_EntityCentralIndexKey 0001994489
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Jan. 19, 2024
Effective Date dei_DocumentEffectiveDate Jan. 19, 2024
Prospectus Date rr_ProspectusDate Jan. 19, 2024
Entity Inv Company Type dei_EntityInvCompanyType N-1A
Embark Commodity Strategy Fund | Retirement Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol ECSQX
Embark Commodity Strategy Fund | Institutional Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol ECSWX
Embark Small Cap Equity Fund | Retirement Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol ESCQX
Embark Small Cap Equity Fund | Institutional Class  
Risk Return Abstract rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol ESCWX