|PowerShares Calif AMT-Free Muni Bd ETF|
|The investment seeks investment results that generally correspond (before fees and expenses) to the price and yield of the BofA Merrill Lynch California Long-Term Core Plus Municipal Securities Index.
The fund generally will invest at least 80% of its total assets in municipal securities that comprise the underlying index and that also are exempt from the federal AMT. The underlying index is composed of U.S. dollar-denominated, investment grade, tax-exempt debt publicly issued by California or any U.S. territory or their political subdivisions, in the U.S. domestic market with a term of at least 15 years remaining to final maturity. It is non-diversified.|
| ||PWZ||Category Avg|
|Annual Report Expense Ratio (net)||0.28%||0.24%|
|Annual Holdings Turnover||3.00%||8.00|
|Total Net Assets||NaN||NaN|