v3.25.2
Shareholder Report, Holdings (Details)
Jun. 30, 2025
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Long Equity Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Long Foreign Exchange Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Long Interest Rate Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Short Equity Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 39.50%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Short Foreign Exchange Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Equity Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 61.90%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Fixed Income Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Exchange-Traded Equity Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Residential Mortgage-Backed Securities Agency [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Exchange-Traded Fixed Income Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Variable Portfolio – Managed Volatility Growth Fund - Class 1 | Other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Long Equity Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Long Foreign Exchange Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Long Interest Rate Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Short Equity Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 39.50%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Short Foreign Exchange Risk [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Equity Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 61.90%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Money Market Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.70%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Fixed Income Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Exchange-Traded Equity Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Residential Mortgage-Backed Securities Agency [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Exchange-Traded Fixed Income Funds [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
Variable Portfolio – Managed Volatility Growth Fund - Class 2 | Other [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.80%