|SPDR SSgA Income Allocation ETF|
|The investment seeks to provide total return by focusing on investments in income and yield-generating assets.
The fund invests substantially all of its assets in the SSgA Income Allocation Portfolio, a separate series of the SSgA Master Trust with an identical investment objective as the fund. As a result, the fund invests indirectly through the Portfolio. It invests the assets of the Portfolio among ETPs that provide exposure to four primary asset classes: (i) domestic and international equity securities; (ii) domestic and international investment grade and high yield debt securities; (iii) hybrid equity/debt securities; and (iv) REITs.|
| ||INKM||Category Avg|
|Annual Report Expense Ratio (net)||0.35%||N/A|
|Annual Holdings Turnover||80.00%||N/A|
|Total Net Assets||NaN||N/A|