v3.26.3
Federated Hermes MDT Large Cap Growth Fund N-1A Cover
Jul. 31, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name Federated Hermes MDT Series
Entity Central Index Key 0001363526
Entity Investment Company Type N-1A
Document Period End Date Jul. 31, 2026
Prospectus Date Sep. 30, 2026