v3.26.3
Form N-CSR Cover
6 Months Ended
Jul. 31, 2026
Shareholder Report [Line Items]  
Document Type N-CSRS/A
Amendment Flag false
Registrant Name BNY Dreyfus Treasury Securities Cash Management
Entity Central Index Key 0000843781
Entity Investment Company Type N-1A
Document Period End Date Jul. 31, 2026