v3.26.1
Mid Cap Value Portfolio Annual Fund Operating Expenses - Mid Cap Value Portfolio
Dec. 31, 2025
Prospectus [Line Items]  
Fee Waiver or Reimbursement over Assets, Date of Termination <span style="font-family:Times New Roman;font-size:10.02pt;">April 30, 2027</span>
Mid Cap Value Portfolio  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.85%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.03% [1]
Expenses (as a percentage of Assets) 0.88% [1]
Fee Waiver or Reimbursement (0.17%) [2]
Net Expenses (as a percentage of Assets) 0.71% [1],[2]
[1] Includes fees and expenses incurred indirectly by the Portfolio as a result of investments in other investment companies (Acquired Fund Fees and Expenses). The operating expenses of the Portfolio reflected in the Portfolio's most recent annual report and Financial Highlights do not include the Acquired Fund Fees and Expenses.
[2] The Portfolio's investment adviser has contractually agreed to waive a portion of its management fee. This contractual agreement will continue through at least April 30, 2027 and may not be terminated prior to that date without action by the Board of Directors.