State Street SPDR Portfolio Intermediate Term Treasury Index ETF Investment Objectives and Goals - State Street SPDR Portfolio Intermediate Term Treasury Index ETF	Jun. 30, 2026
Prospectus [Line Items]
Risk/Return [Heading]	<span style="color:#000000;font-family:Arial;font-size:18pt;font-weight:bold;">State Street</span><span style="color:#000000;font-family:Arial;font-size:11.5pt;font-weight:bold;position:relative;top:-5pt;">®</span><span style="color:#000000;font-family:Arial;font-size:18pt;font-weight:bold;"> SPDR</span><span style="color:#000000;font-family:Arial;font-size:11.5pt;font-weight:bold;position:relative;top:-5pt;">®</span><span style="color:#000000;font-family:Arial;font-size:18pt;font-weight:bold;"> Portfolio Intermediate Term Treasury Index ETF</span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">(formerly, State Street</span><span style="color:#000000;font-family:Arial;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;">®</span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;"> SPDR</span><span style="color:#000000;font-family:Arial;font-size:6.5pt;font-weight:bold;position:relative;top:-2.75pt;">®</span><span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;"> Portfolio Intermediate Term Treasury ETF)</span>
Objective [Heading]	<span style="color:#000000;font-family:Arial;font-size:10.5pt;font-weight:bold;margin-left:10.5pt;text-transform:uppercase;">Investment Objective</span>
Objective, Primary [Text Block]	The State Street SPDR Portfolio Intermediate Term Treasury Index ETF (the “Fund”) seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of an index that tracks the intermediate-term sector of the United States Treasury market.

State Street SPDR Portfolio Intermediate Term Treasury Index ETF Investment Objectives and Goals - State Street SPDR Portfolio Intermediate Term Treasury Index ETF

Jun. 30, 2026

State Street® SPDR® Portfolio Intermediate Term Treasury Index ETF(formerly, State Street® SPDR® Portfolio Intermediate Term Treasury ETF)

Objective [Heading]

Investment Objective

Objective, Primary [Text Block]

The State Street SPDR Portfolio Intermediate Term Treasury Index ETF (the “Fund”) seeks to provide investment results that, before fees and expenses, correspond generally to the price and yield performance of an index that tracks the intermediate-term sector of the United States Treasury market.