v3.26.1
Multi-Sector Bond Portfolio Annual Fund Operating Expenses - Multi-Sector Bond 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>
Multi-Sector Bond Portfolio  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.77%
Distribution and Service (12b-1) Fees 0.00%
Component1 Other Expenses 0.03%
Component2 Other Expenses 0.05%
Other Expenses (as a percentage of Assets): 0.08% [1]
Expenses (as a percentage of Assets) 0.85%
Fee Waiver or Reimbursement (0.10%) [2]
Net Expenses (as a percentage of Assets) 0.75% [1],[2]
[1] “Other Expenses” include interest expense of 0.03%. Interest expense is borne by the Portfolio separately from the management fees paid to the Portfolio’s investment adviser, Mason Street Advisors, LLC, and the Portfolio’s sub-adviser, Pacific Investment Management Company LLC. Excluding interest expense, Total Annual Portfolio Operating Expenses are 0.82% and Total Annual Portfolio Operating Expenses After Expense Reimbursement are 0.72%.
[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.