XML 28 R9.htm IDEA: XBRL DOCUMENT v3.21.1
Shareholder Fees - Investor P - iShares Municipal Bond Index Fund - Investor P Shares
Apr. 30, 2021
Shareholder Fees:  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 4.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) none [1]
[1] A contingent deferred sales charge (“CDSC”) of 0.15% is assessed on certain redemptions of Investor P Shares made within 18 months after purchase where no initial sales charge was paid at time of purchase as part of an investment of $1,000,000 or more.