v3.26.1
SA Allocation Moderate Portfolio N-1A Cover
Mar. 31, 2026
Prospectus [Line Items]  
Document Type 485BPOS
Amendment Flag false
Registrant Name SEASONS SERIES TRUST
Entity Central Index Key 0001003239
Entity Investment Company Type N-1A
Document Period End Date Mar. 31, 2026
Prospectus Date Jul. 29, 2026