| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| 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, 2024 |
| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| 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, 2024 |
| C000065485 | |
| Shareholder Report [Line Items] | |
| Fund Name | SPDR Bloomberg Emerging Markets Local Bond ETF |
| Trading Symbol | EBND |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the SPDR Bloomberg Emerging Markets Local Bond ETF (the "Fund") for the period ended June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund, including the Prospectus, Statement of Additional Information, financial statements and other information at www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs |
| Additional Information Phone Number | 1-866-787-2257 |
| Additional Information Website | www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span>" id="sjs-B18"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left;">www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? Fund Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment SPDR Bloomberg Emerging Markets Local Bond ETF $15 0.30% |
| Expenses Paid, Amount | $ 15 |
| Expense Ratio, Percent | 0.30% |
| AssetsNet | $ 1,919,132,701 |
| Holdings Count | Holding | 543 |
| InvestmentCompanyPortfolioTurnover | 14% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Statistic Value Total Net Assets $1,919,132,701 # of Portfolio Holdings 543 Portfolio Turnover Rate 14% |
| Holdings [Text Block] | Top Ten Countries Country % Value of Total Net Assets South Korea 12.6% China 11.4% Indonesia 6.9% Malaysia 6.7% Mexico 5.9% Thailand 4.4% South Africa 4.6% Philippines 4.5% Poland 4.5% Czech Republic 4.4% |
| Largest Holdings [Text Block] | Maturity Weightings Maturity Duration % Value of Total Net Assets 0 to 1 Year 2.0% 1 to 2 Years 10.1% 2 to 3 Years 12.6% 3 to 5 Years 17.6% 5 to 10 Years 28.5% 10 to 20 Years 16.8% 20 to 30 Years 8.9% Greater than 30 Years 1.6% |
| C000088912 | |
| Shareholder Report [Line Items] | |
| Fund Name | SPDR Bloomberg International Corporate Bond ETF |
| Trading Symbol | IBND |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the SPDR Bloomberg International Corporate Bond ETF (the "Fund") for the period ended June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund, including the Prospectus, Statement of Additional Information, financial statements and other information at www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs |
| Additional Information Phone Number | 1-866-787-2257 |
| Additional Information Website | www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span>" id="sjs-B36"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left;">www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? Fund Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment SPDR Bloomberg International Corporate Bond ETF $25 0.50% |
| Expenses Paid, Amount | $ 25 |
| Expense Ratio, Percent | 0.50% |
| AssetsNet | $ 155,071,086 |
| Holdings Count | Holding | 770 |
| InvestmentCompanyPortfolioTurnover | 7% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Statistic Value Total Net Assets $155,071,086 # of Portfolio Holdings 770 Portfolio Turnover Rate 7% |
| Holdings [Text Block] | Top Ten Countries Country % Value of Total Net Assets United States 24.3% France 20.7% Germany 10.8% United Kingdom 9.2% Spain 6.6% Netherlands 6.4% Italy 5.4% Switzerland 3.9% Japan 2.2% Belgium 1.9% |
| Largest Holdings [Text Block] | Maturity Weightings Maturity Duration % Value of Total Net Assets 1 to 2 Years 11.7% 2 to 3 Years 15.6% 3 to 5 Years 24.5% 5 to 10 Years 37.4% 10 to 20 Years 8.1% 20 to 30 Years 0.6% Greater than 30 Years 0.3% |
| C000051964 | |
| Shareholder Report [Line Items] | |
| Fund Name | SPDR Bloomberg International Treasury Bond ETF |
| Trading Symbol | BWX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the SPDR Bloomberg International Treasury Bond ETF (the "Fund") for the period ended June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund, including the Prospectus, Statement of Additional Information, financial statements and other information at www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs |
| Additional Information Phone Number | 1-866-787-2257 |
| Additional Information Website | www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span>" id="sjs-B54"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left;">www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? Fund Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment SPDR Bloomberg International Treasury Bond ETF $17 0.35% |
| Expenses Paid, Amount | $ 17 |
| Expense Ratio, Percent | 0.35% |
| AssetsNet | $ 865,971,696 |
| Holdings Count | Holding | 1,213 |
| InvestmentCompanyPortfolioTurnover | 8% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Statistic Value Total Net Assets $865,971,696 # of Portfolio Holdings 1,213 Portfolio Turnover Rate 8% |
| Holdings [Text Block] | Top Ten Countries Country % Value of Total Net Assets Japan 23.0% France 5.1% United Kingdom 4.9% South Korea 4.6% Canada 4.6% China 4.6% Italy 4.5% Germany 4.5% Spain 4.5% Australia 4.4% |
| Largest Holdings [Text Block] | Maturity Weightings Maturity Duration % Value of Total Net Assets 1 to 2 Years 10.5% 2 to 3 Years 9.5% 3 to 5 Years 18.8% 5 to 10 Years 29.8% 10 to 20 Years 17.2% 20 to 30 Years 10.8% Greater than 30 Years 2.4% |
| C000069669 | |
| Shareholder Report [Line Items] | |
| Fund Name | SPDR Bloomberg Short Term International Treasury Bond ETF |
| Trading Symbol | BWZ |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the SPDR Bloomberg Short Term International Treasury Bond ETF (the "Fund") for the period ended June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund, including the Prospectus, Statement of Additional Information, financial statements and other information at www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs |
| Additional Information Phone Number | 1-866-787-2257 |
| Additional Information Website | www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span>" id="sjs-B72"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left;">www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? Fund Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment SPDR Bloomberg Short Term International Treasury Bond ETF $17 0.35% |
| Expenses Paid, Amount | $ 17 |
| Expense Ratio, Percent | 0.35% |
| AssetsNet | $ 149,272,580 |
| Holdings Count | Holding | 240 |
| InvestmentCompanyPortfolioTurnover | 26% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Statistic Value Total Net Assets $149,272,580 # of Portfolio Holdings 240 Portfolio Turnover Rate 26% |
| Holdings [Text Block] | Top Ten Countries Country % Value of Total Net Assets Japan 22.9% Italy 5.0% France 5.0% South Korea 4.6% Germany 4.6% Australia 4.6% Canada 4.6% Spain 4.6% China 4.5% United Kingdom 4.5% |
| Largest Holdings [Text Block] | Maturity Weightings Maturity Duration % Value of Total Net Assets 1 to 2 Years 54.3% 2 to 3 Years 44.7% |
| C000051965 | |
| Shareholder Report [Line Items] | |
| Fund Name | SPDR FTSE International Government Inflation-Protected Bond ETF |
| Trading Symbol | WIP |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the SPDR FTSE International Government Inflation-Protected Bond ETF (the "Fund") for the period ended June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | Semi-Annual Shareholder Report |
| Additional Information [Text Block] | You can find additional information about the Fund, including the Prospectus, Statement of Additional Information, financial statements and other information at www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs |
| Additional Information Phone Number | 1-866-787-2257 |
| Additional Information Website | www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span>" id="sjs-B90"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 13.3333px; font-weight: 400; grid-area: auto; line-height: 20px; margin: 0px; overflow: visible; text-align: left;">www.ssga.com/us/en/institutional/fund-finder?tab=documents&type=etfs</span> |
| Expenses [Text Block] | What were the Fund costs for the last six months? Fund Name Cost of a $10,000 investment Costs paid as a percentage of a $10,000 investment SPDR FTSE International Government Inflation-Protected Bond ETF $24 0.50% |
| Expenses Paid, Amount | $ 24 |
| Expense Ratio, Percent | 0.50% |
| AssetsNet | $ 376,235,795 |
| Holdings Count | Holding | 164 |
| InvestmentCompanyPortfolioTurnover | 7% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Statistic Value Total Net Assets $376,235,795 # of Portfolio Holdings 164 Portfolio Turnover Rate 7% |
| Holdings [Text Block] | Top Ten Countries Country % Value of Total Net Assets United Kingdom 19.2% France 7.7% Brazil 7.1% Italy 5.2% Australia 4.7% South Africa 4.7% Mexico 4.7% Spain 4.6% Japan 4.6% Chile 4.6% |
| Largest Holdings [Text Block] | Maturity Weightings Maturity Duration % Value of Total Net Assets 0 to 1 Year 0.1% 1 to 2 Years 8.4% 2 to 3 Years 5.6% 3 to 5 Years 17.5% 5 to 10 Years 26.1% 10 to 20 Years 22.5% 20 to 30 Years 13.8% Greater than 30 Years 4.1% |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 |
| C000065485 | 0 to 1 Year | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000065485 | 1 to 2 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.10% |
| C000065485 | 2 to 3 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.60% |
| C000065485 | 3 to 5 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.60% |
| C000065485 | 5 to 10 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 28.50% |
| C000065485 | 10 to 20 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.80% |
| C000065485 | 20 to 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.90% |
| C000065485 | Greater than 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000065485 | South Korea | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.60% |
| C000065485 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000065485 | Indonesia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000065485 | Malaysia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000065485 | Mexico | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000065485 | Thailand | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000065485 | South Africa | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000065485 | Philippines | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000065485 | Poland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000065485 | Czech Republic | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000088912 | 1 to 2 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000088912 | 2 to 3 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.60% |
| C000088912 | 3 to 5 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.50% |
| C000088912 | 5 to 10 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 37.40% |
| C000088912 | 10 to 20 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.10% |
| C000088912 | 20 to 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000088912 | Greater than 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000088912 | United States | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.30% |
| C000088912 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.70% |
| C000088912 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000088912 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.20% |
| C000088912 | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000088912 | Netherlands | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000088912 | Italy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000088912 | Switzerland | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000088912 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.20% |
| C000088912 | Belgium | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000051964 | 1 to 2 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000051964 | 2 to 3 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.50% |
| C000051964 | 3 to 5 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000051964 | 5 to 10 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 29.80% |
| C000051964 | 10 to 20 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.20% |
| C000051964 | 20 to 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000051964 | Greater than 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000069669 | 1 to 2 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 54.30% |
| C000069669 | 2 to 3 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 44.70% |
| C000069669 | South Korea | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000069669 | China | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000069669 | France | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000069669 | Germany | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000069669 | United Kingdom | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000069669 | Spain | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000069669 | Italy | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000069669 | Japan | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.90% |
| C000069669 | Australia | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000069669 | Canada | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000051965 | 0 to 1 Year | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000051965 | 1 to 2 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000051965 | 2 to 3 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000051965 | 3 to 5 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.50% |
| C000051965 | 5 to 10 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.10% |
| C000051965 | 10 to 20 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.50% |
| C000051965 | 20 to 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.80% |
| C000051965 | Greater than 30 Years | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
