v3.26.3
Form N-1A Cover
Aug. 31, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name Federated Hermes Adjustable Rate Securities Trust
Entity Central Index Key 0000771524
Entity Investment Company Type N-1A
Document Period End Date Aug. 31, 2026
Prospectus Date Oct. 31, 2026