v3.26.1
Service and Premier Shares [Member] Annual Fund Operating Expenses - Service and Premier Shares [Member] - TREASURY PORTFOLIO
Nov. 30, 2025
Prospectus [Line Items]  
Fee Waiver or Reimbursement over Assets, Date of Termination April 1, 2027
Service Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.13%
Component1 Other Expenses 0.02%
Component2 Other Expenses 0.00%
Component3 Other Expenses 0.00%
Other Expenses (as a percentage of Assets): 0.02% [1]
Expenses (as a percentage of Assets) 0.15%
Fee Waiver or Reimbursement 0.00% [2]
Net Expenses (as a percentage of Assets) 0.15%
Premier Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.13%
Component1 Other Expenses 0.02%
Component2 Other Expenses 0.05%
Component3 Other Expenses 0.00%
Other Expenses (as a percentage of Assets): 0.07%
Expenses (as a percentage of Assets) 0.20%
Fee Waiver or Reimbursement 0.00% [2]
Net Expenses (as a percentage of Assets) 0.20%
[1]
“Other Expenses” are based on estimated amounts for the current fiscal year.
[2]
Northern Trust Investments, Inc. (“NTI”) has contractually agreed to reimburse a portion of the operating expenses of the Portfolio so that after such reimbursement the Total Annual Fund Operating Expenses of the Portfolio (excluding (i) acquired fund fees and expenses; (ii) service fees; (iii) the compensation paid to each Independent Trustee of the Trust; (iv) expenses of third party consultants engaged by the Board of Trustees; (v) membership dues paid to the Investment Company Institute and Mutual Fund Directors Forum; (vi) expenses in connection with the negotiation and renewal of the revolving credit facility; and (vii) extraordinary expenses and interest) do not exceed 0.15%. The “Total Annual Portfolio Operating Expenses After Expense Reimbursement” may be higher than the contractual limitation as a result of certain Portfolio expenses, including but not limited to service fees, that are not reimbursed. This contractual limitation may not be terminated before April 1, 2027 without the approval of the Board of Trustees.