v3.26.1
Service and Premier Shares [Member] Annual Fund Operating Expenses - Service and Premier Shares [Member] - U.S. GOVERNMENT 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) 0.23%
Component1 Other Expenses 0.02%
Component2 Other Expenses 0.00%
Component3 Other Expenses 0.01%
Other Expenses (as a percentage of Assets): 0.03% [1]
Expenses (as a percentage of Assets) 0.26%
Fee Waiver or Reimbursement (0.01%) [2]
Net Expenses (as a percentage of Assets) 0.25%
Premier Shares  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.23%
Component1 Other Expenses 0.02%
Component2 Other Expenses 0.00%
Component3 Other Expenses 0.01%
Other Expenses (as a percentage of Assets): 0.03% [1]
Expenses (as a percentage of Assets) 0.26%
Fee Waiver or Reimbursement (0.01%) [2]
Net Expenses (as a percentage of Assets) 0.25%
[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 0.25%. This contractual limitation may not be terminated before April 1, 2027 without the approval of the Board of Trustees.