v3.26.1
Label Element Value
Risk/Return: oef_RiskReturnAbstract  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Jan. 31, 2026
Registrant Name dei_EntityRegistrantName Dreyfus Government Cash Management Funds
Entity Central Index Key dei_EntityCentralIndexKey 0000740766
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate May 29, 2026
Document Effective Date dei_DocumentEffectiveDate Jun. 01, 2026
Entity Investment Company Type dei_EntityInvCompanyType N-1A
Prospectus Date oef_ProspectusDate Jun. 01, 2026
Prospectus Summary | Dreyfus Government Cash Management | Administrative Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DAGXX
Prospectus Summary | Dreyfus Government Securities Cash Management | Administrative Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DAPXX
Prospectus Summary | Dreyfus Government Cash Management | BOLD® Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DBLXX
Prospectus Summary | Dreyfus Government Cash Management | BOLD® Future Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DBFXX
Prospectus Summary | Dreyfus Government Cash Management | Independence Point Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol IPSXX
Prospectus Summary | Dreyfus Government Cash Management | Institutional Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DGCXX
Prospectus Summary | Dreyfus Government Securities Cash Management | Institutional Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DIPXX
Prospectus Summary | Dreyfus Government Cash Management | Investor Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DGVXX
Prospectus Summary | Dreyfus Government Securities Cash Management | Investor Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DVPXX
Prospectus Summary | Dreyfus Government Cash Management | Participant Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DPGXX
Prospectus Summary | Dreyfus Government Securities Cash Management | Participant Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DGPXX
Prospectus Summary | Dreyfus Government Cash Management | Service Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DGUXX
Prospectus Summary | Dreyfus Government Cash Management | SPARKSM Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol SPKXX
Prospectus Summary | Dreyfus Government Cash Management | SPARKSM Future Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol SPFXX
Prospectus Summary | Dreyfus Government Cash Management | Wealth Shares  
Risk/Return: oef_RiskReturnAbstract  
Trading Symbol dei_TradingSymbol DGQXX