v3.25.1
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Nov. 30, 2024
Registrant Name dei_EntityRegistrantName NEW YORK LIFE INVESTMENTS FUNDS TRUST
Entity Central Index Key dei_EntityCentralIndexKey 0001469192
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Mar. 26, 2025
Document Effective Date dei_DocumentEffectiveDate Mar. 28, 2025
EntityInvCompanyType dei_EntityInvCompanyType N-1A
Prospectus Date rr_ProspectusDate Mar. 28, 2025
Prospectus Summary | NYLI Cushing MLP Premier Fund | Class A  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol CSHAX
Prospectus Summary | NYLI Cushing MLP Premier Fund | Investor Class  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol CSHNX
Prospectus Summary | NYLI Cushing MLP Premier Fund | Class C  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol CSHCX
Prospectus Summary | NYLI Cushing MLP Premier Fund | Class I  
Risk/Return: rr_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol CSHZX