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Investment Objectives and Goals
Jan. 31, 2024
Administrative Shares Prospectus | DREYFUS CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Administrative Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Administrative Shares Prospectus | Dreyfus Government Securities Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Administrative Shares Prospectus | Dreyfus Treasury Obligations Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Obligations Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Administrative Shares Prospectus | DREYFUS TREASURY SECURITIES CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
BOLD Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Institutional Shares Prospectus | DREYFUS CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.

Institutional Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Insitutional Shares Prospectus | Dreyfus Government Securities Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.

Insitutional Shares Prospectus | Dreyfus Treasury Obligations Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Obligations Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Insitutional Shares Prospectus | DREYFUS TREASURY SECURITIES CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Insitutional Shares Prospectus | DREYFUS TAX EXEMPT CASH MANAGEMENT FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Tax Exempt Cash Management Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income exempt from federal income tax as is consistent with the preservation of capital and the maintenance of liquidity.
Investor Shares Prospectus | DREYFUS CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.

Investor Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Investor Shares Prospectus | Dreyfus Government Securities Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.

Investor Shares Prospectus | Dreyfus Treasury Obligations Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Obligations Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Investor Shares Prospectus | DREYFUS TREASURY SECURITIES CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Participant Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Participant Shares Prospectus | Dreyfus Government Securities Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.

Participant Shares Prospectus | Dreyfus Treasury Obligations Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Obligations Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Participant Shares Prospectus | DREYFUS TREASURY SECURITIES CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Service Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Service Shares Prospectus | Dreyfus Treasury Obligations Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Obligations Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Service Shares Prospectus | DREYFUS TREASURY SECURITIES CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Spark Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Wealth Shares Prospectus | Dreyfus Government Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Government Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Wealth Shares Prospectus | Dreyfus Treasury Obligations Cash Management  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Obligations Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.
Wealth Shares Prospectus | DREYFUS TREASURY SECURITIES CASH MANAGEMENT  
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary Dreyfus Treasury Securities Cash Management
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income as is consistent with the preservation of capital and the maintenance of liquidity.