v3.26.1
Annual Fund Operating Expenses - BlackRock Summit Cash Reserves Fund
Apr. 30, 2026
Prospectus [Line Items]  
Fee Waiver or Reimbursement over Assets, Date of Termination June 30, 2028
Investor A Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.05%
Expenses (as a percentage of Assets) 0.55%
Fee Waiver or Reimbursement (0.13%) [1]
Net Expenses (as a percentage of Assets) 0.42% [1]
Investor C Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.75%
Other Expenses (as a percentage of Assets): 0.31%
Expenses (as a percentage of Assets) 1.56%
Fee Waiver or Reimbursement (0.39%) [1]
Net Expenses (as a percentage of Assets) 1.17% [1]
Institutional Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.50%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.07%
Expenses (as a percentage of Assets) 0.57%
Fee Waiver or Reimbursement (0.15%) [1]
Net Expenses (as a percentage of Assets) 0.42% [1]
[1] As described in the “Management of the Fund” section of the Fund’s prospectus beginning on page 31, BlackRock has contractually agreed to waive and/or reimburse fees or expenses in order to limit Total Annual Fund Operating Expenses After Fee Waivers and/or Expense Reimbursements (excluding Dividend Expense, Interest Expense, Acquired Fund Fees and Expenses and certain other Fund expenses) to 0.42% (for Investor A Shares and Institutional Shares) and 1.17% (for Investor C Shares) of average daily net assets through June 30, 2028. The agreement may be terminated upon 90 days’ notice by a majority of the non-interested trustees of the Trust or by a vote of a majority of the outstanding voting securities of the Fund.