|SPDR S&P 400 Mid Cap Growth ETF|
|The investment seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of an index that tracks the performance of medium capitalization exchange traded U.S. equity securities exhibiting "growth" characteristics.
The fund employs a replication strategy in seeking to track the performance of the S&P MidCap 400 Growth Index. It generally invests at least 80% of total assets in the securities comprising the index. The fund may invest in equity securities that are not included in the index, cash and cash equivalents or money market instruments. It is non-diversified.|
| ||MDYG||Category Avg|
|Annual Report Expense Ratio (net)||0.25%||N/A|
|Annual Holdings Turnover||33.00%||N/A|
|Total Net Assets||NaN||N/A|