v3.26.1
Loomis Sayles Growth Portfolio Expense Example - Loomis Sayles Growth Portfolio
Dec. 31, 2025
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 56
Expense Example, with Redemption, 3 Years 183
Expense Example, with Redemption, 5 Years 321
Expense Example, with Redemption, 10 Years 723
Class B  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 82
Expense Example, with Redemption, 3 Years 262
Expense Example, with Redemption, 5 Years 458
Expense Example, with Redemption, 10 Years 1,023
Class E  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 72
Expense Example, with Redemption, 3 Years 230
Expense Example, with Redemption, 5 Years 403
Expense Example, with Redemption, 10 Years $ 904