|Market Vectors Steel ETF|
|The investment seeks to replicate as closely as possible, before fees and expenses, the price and yield performance of the NYSE Arca Steel Index.
The fund normally invests at least 80% of its total assets in securities that comprise the Steel Index. It normally invests at least 80% of its total assets in common stocks and depositary receipts of companies involved in the steel sector. As of December 31, 2014, the Steel Index included 28 securities of companies with a market capitalization range of between approximately $94 million and $85.8 billion and a weighted average market capitalization of $23.3 billion. The fund is non-diversified.|
| ||SLX||Category Avg|
|Annual Report Expense Ratio (net)||0.55%||N/A|
|Annual Holdings Turnover||11.00%||N/A|
|Total Net Assets||NaN||N/A|