|FlexShares Mstar Gbl Upstrm Nat Res ETF|
|The investment seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the MorningstarÂ® Global Upstream Natural Resources IndexSM.
The fund invests at least 80% of its total assets in the securities of the underlying index and in American Depositary Receipts and Global Depositary Receipts based on the securities in its underlying index. The index reflects the performance of a selection of equity securities that are traded in or are issued by companies domiciled in global developed or emerging markets, as determined by the index provider pursuant to its index methodology. It is non-diversified.|
| ||GUNR||Category Avg|
|Annual Report Expense Ratio (net)||0.48%||N/A|
|Annual Holdings Turnover||8.00%||N/A|
|Total Net Assets||NaN||N/A|