v3.26.3
State Street SPDR SP 500 Fossil Fuel Reserves Free ETF N-1A Cover
Jun. 30, 2026
Prospectus [Line Items]  
Document Type 497
Amendment Flag false
Registrant Name SPDR Series Trust
Entity Central Index Key 0001064642
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
Prospectus Date Oct. 30, 2026