|SPDR S&P Aerospace & Defense ETF|
|The investment seeks to provide investment results that, before fees and expenses, correspond generally to the total return performance of an index derived from the aerospace and defense segment of a U.S. total market composite index.
In seeking to track the performance of the S&P Aerospace & Defense Select Industry Index (the "index"), the fund employs a sampling strategy. It generally invests substantially all, but at least 80%, of its total assets in the securities comprising the index. The index represents the aerospace and defense industry group of the S&P Total Market Index ("S&P TMI"). The fund is non-diversified.|
| ||XAR||Category Avg|
|Annual Report Expense Ratio (net)||0.35%||0.46%|
|Annual Holdings Turnover||33.00%||20.44|
|Total Net Assets||NaN||NaN|