v3.26.1
DWS Equity 500 Index Fund Shareholder Fees - DWS Equity 500 Index Fund
Apr. 28, 2026
USD ($)
Class R6  
Prospectus [Line Items]  
Maximum Account Fee $ 0
INST Class  
Prospectus [Line Items]  
Maximum Account Fee 0
Class S  
Prospectus [Line Items]  
Maximum Account Fee $ 20