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Average Annual Total Returns
 12 Months Ended 38 Months Ended 44 Months Ended 50 Months Ended 60 Months Ended 62 Months Ended 104 Months Ended 116 Months Ended 120 Months Ended
Apr. 29, 2025
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
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Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Core Income Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 27, 2015)                    
Average Annual Return, Percent   2.78%         1.19%     2.17%  
Performance Inception Date Apr. 27, 2015                    
Core Income Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted April 27, 2015)                    
Average Annual Return, Percent   2.98%         1.39%     2.38%  
Performance Inception Date Apr. 27, 2015                    
Core Income Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)(based on Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)(based on Class I inception date)                    
Average Annual Return, Percent   1.25%         (0.33%)     1.20%  
Diversified Bond Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 1, 2006)                    
Average Annual Return, Percent   1.62%         (1.50%)       1.60%
Performance Inception Date May 01, 2006                    
Diversified Bond Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   1.87%         (1.29%)       1.81%
Performance Inception Date May 02, 2011                    
Diversified Bond Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Floating Rate Income Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 30, 2013)                    
Average Annual Return, Percent   8.05%         5.78%       4.97%
Performance Inception Date Apr. 30, 2013                    
Floating Rate Income Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted April 30, 2013)                    
Average Annual Return, Percent   8.39%         6.00%       5.18%
Performance Inception Date Apr. 30, 2013                    
Floating Rate Income Portfolio | Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Floating Rate Income Portfolio | S&P UBS Leveraged Loan Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P UBS Leveraged Loan Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   9.05%         5.73%       5.13%
High Yield Bond Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1988)                    
Average Annual Return, Percent   7.14%         3.74%       4.62%
Performance Inception Date Jan. 04, 1988                    
High Yield Bond Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   7.36%         3.95%       4.83%
Performance Inception Date May 02, 2011                    
High Yield Bond Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
High Yield Bond Portfolio | Bloomberg US High-Yield 2% Issuer Capped Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US High-Yield 2% Issuer Capped Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   8.19%         4.20%       5.16%
Inflation Managed Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1988)                    
Average Annual Return, Percent   2.36%         1.95%       2.15%
Performance Inception Date Jan. 04, 1988                    
Inflation Managed Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   2.56%         2.15%       2.35%
Performance Inception Date May 02, 2011                    
Inflation Managed Portfolio | Bloomberg US Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses or taxes) (Regulatory Index)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Inflation Managed Portfolio | Bloomberg US TIPS Index (reflects no deductions for fees, expenses or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US TIPS Index (reflects no deductions for fees, expenses or taxes)                    
Average Annual Return, Percent   1.84%         1.87%       2.24%
Intermediate Bond Portfolio | I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted November 1, 2021)                    
Average Annual Return, Percent   2.11% (1.99%)                
Performance Inception Date Nov. 01, 2021                    
Intermediate Bond Portfolio | P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 23, 2020)                    
Average Annual Return, Percent   2.32%       (1.37%)          
Performance Inception Date Oct. 23, 2020                    
Intermediate Bond Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses or taxes) (based on Class P inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses or taxes) (based on Class P inception date)                    
Average Annual Return, Percent   1.25% (1.83%)                
Short Duration Bond Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 1, 2003)                    
Average Annual Return, Percent   4.87%         1.62%       1.67%
Performance Inception Date May 01, 2003                    
Short Duration Bond Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   5.08%         1.83%       1.87%
Performance Inception Date May 02, 2011                    
Short Duration Bond Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Short Duration Bond Portfolio | Bloomberg US 1-3 Year Government/ Credit Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US 1-3 Year Government/​Credit Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   4.36%         1.58%       1.63%
Total Return Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1988)                    
Average Annual Return, Percent   2.70%         0.15%       1.65%
Performance Inception Date Jan. 04, 1988                    
Total Return Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   2.90%         0.35%       1.85%
Performance Inception Date May 02, 2011                    
Total Return Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Emerging Markets Debt Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 30, 2012)                    
Average Annual Return, Percent   6.88%         0.80%       3.15%
Performance Inception Date Apr. 30, 2012                    
Emerging Markets Debt Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted April 30, 2012)                    
Average Annual Return, Percent   7.09%         1.00%       3.35%
Performance Inception Date Apr. 30, 2012                    
Emerging Markets Debt Portfolio | J.P. Morgan Emerging Markets Blended – Equal Weighted Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] J.P. Morgan Emerging Markets Blended – Equal Weighted Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   3.90%         0.18%       2.59%
Dividend Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 3, 2000)                    
Average Annual Return, Percent   13.24%         10.39%       11.10%
Performance Inception Date Jan. 03, 2000                    
Dividend Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   13.53%         10.62%       11.32%
Performance Inception Date May 02, 2011                    
Dividend Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)(Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)(Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Dividend Growth Portfolio | Nasdaq® US Broad Dividend Achievers Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Nasdaq® US Broad Dividend Achievers Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   17.61%         11.05%       10.61%
Equity Index Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 30, 1991)                    
Average Annual Return, Percent   24.66%         14.22%       12.78%
Performance Inception Date Jan. 30, 1991                    
Equity Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   24.91%         14.45%       13.01%
Performance Inception Date May 02, 2011                    
Equity Index Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Focused Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted October 2, 2000)                    
Average Annual Return, Percent   27.95%         14.12%       14.92%
Performance Inception Date Oct. 02, 2000                    
Focused Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   28.20%         14.35%       15.16%
Performance Inception Date May 02, 2011                    
Focused Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Focused Growth Portfolio | Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   33.36%         18.96%       16.78%
Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1994)                    
Average Annual Return, Percent   31.82%         14.82%       15.10%
Performance Inception Date Jan. 04, 1994                    
Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   32.08%         15.05%       15.33%
Performance Inception Date May 02, 2011                    
Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Growth Portfolio | Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   33.36%         18.96%       16.78%
Hedged Equity Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 30, 2021)                    
Average Annual Return, Percent   17.87%     7.91%            
Performance Inception Date Apr. 30, 2021                    
Hedged Equity Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted April 30, 2021)                    
Average Annual Return, Percent   18.11%     8.13%            
Performance Inception Date Apr. 30, 2021                    
Hedged Equity Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                    
Average Annual Return, Percent   25.02%     11.42%            
Large-Cap Core Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1988)                    
Average Annual Return, Percent   23.96%         12.72%       11.62%
Performance Inception Date Jan. 04, 1988                    
Large-Cap Core Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   24.21%         12.95%       11.84%
Performance Inception Date May 02, 2011                    
Large-Cap Core Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Large-Cap Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 2, 2001)                    
Average Annual Return, Percent   29.97%         14.28%       14.12%
Performance Inception Date Jan. 02, 2001                    
Large-Cap Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   30.23%         14.51%       14.35%
Performance Inception Date May 02, 2011                    
Large-Cap Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Large-Cap Growth Portfolio | Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   33.36%         18.96%       16.78%
Large-Cap Value Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1999)                    
Average Annual Return, Percent   7.97%         9.11%       8.43%
Performance Inception Date Jan. 04, 1999                    
Large-Cap Value Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   8.19%         9.33%       8.65%
Performance Inception Date May 02, 2011                    
Large-Cap Value Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Large-Cap Value Portfolio | Russell 1000 Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 1000 Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   14.37%         8.68%       8.49%
Mid-Cap Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 2, 2001)                    
Average Annual Return, Percent   2.48%         8.27%       10.17%
Performance Inception Date Jan. 02, 2001                    
Mid-Cap Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   2.68%         8.48%       10.39%
Performance Inception Date May 02, 2011                    
Mid-Cap Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Mid-Cap Growth Portfolio | Russell Midcap Growth Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell Midcap Growth Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   22.10%         11.47%       11.54%
Mid-Cap Plus Bond Alpha Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1999)                    
Average Annual Return, Percent   14.95%         10.24%       10.26%
Performance Inception Date Jan. 04, 1999                    
Mid-Cap Plus Bond Alpha Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   15.18%         10.46%       10.48%
Performance Inception Date May 02, 2011                    
Mid-Cap Plus Bond Alpha Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Mid-Cap Plus Bond Alpha Portfolio | Russell Midcap Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell Midcap Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   15.34%         9.92%       9.63%
Mid-Cap Value Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 2, 2009)                    
Average Annual Return, Percent   10.31%         9.80%       8.89%
Performance Inception Date Jan. 02, 2009                    
Mid-Cap Value Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   10.53%         10.02%       9.11%
Performance Inception Date May 02, 2011                    
Mid-Cap Value Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Mid-Cap Value Portfolio | Russell Midcap Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell Midcap Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   13.07%         8.59%       8.10%
Small-Cap Equity Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 2, 2005)                    
Average Annual Return, Percent   9.70%         7.54%       7.33%
Performance Inception Date May 02, 2005                    
Small-Cap Equity Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   9.92%         7.76%       7.54%
Performance Inception Date May 02, 2011                    
Small-Cap Equity Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Small-Cap Equity Portfolio | Russell 2000 Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 2000 Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   8.05%         7.29%       7.14%
Small-Cap Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 1, 1996)                    
Average Annual Return, Percent   6.55%         6.17%       8.14%
Performance Inception Date Apr. 01, 1996                    
Small-Cap Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   6.76%         6.38%       8.35%
Performance Inception Date May 02, 2011                    
Small-Cap Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Small-Cap Growth Portfolio | Russell 2000 Growth Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 2000 Growth Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   15.15%         6.86%       8.09%
Small-Cap Index Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1999)                    
Average Annual Return, Percent   10.84%         6.77%       7.20%
Performance Inception Date Jan. 04, 1999                    
Small-Cap Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   11.06%         6.98%       7.41%
Performance Inception Date May 02, 2011                    
Small-Cap Index Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Small-Cap Index Portfolio | Russell 2000 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 2000 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   11.54%         7.40%       7.82%
Small-Cap Value Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 1, 2003)                    
Average Annual Return, Percent   6.18%         5.91%       6.30%
Performance Inception Date May 01, 2003                    
Small-Cap Value Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   6.40%         6.12%       6.51%
Performance Inception Date May 02, 2011                    
Small-Cap Value Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Small-Cap Value Portfolio | Russell 2000 Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 2000 Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   8.05%         7.29%       7.14%
Value Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted October 2, 2000)                    
Average Annual Return, Percent   10.14%         5.17%       6.22%
Performance Inception Date Oct. 02, 2000                    
Value Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   10.36%         5.39%       6.43%
Performance Inception Date May 02, 2011                    
Value Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Value Portfolio | Russell 1000 Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 1000 Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   14.37%         8.68%       8.49%
Value Advantage Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 30, 2013)                    
Average Annual Return, Percent   16.50%         8.89%       8.41%
Performance Inception Date Apr. 30, 2013                    
Value Advantage Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted April 30, 2013)                    
Average Annual Return, Percent   16.74%         9.11%       8.63%
Performance Inception Date Apr. 30, 2013                    
Value Advantage Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Value Advantage Portfolio | Russell 3000 Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 3000 Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   13.98%         8.60%       8.40%
Emerging Markets Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 1, 1996)                    
Average Annual Return, Percent   (1.52%)         (2.91%)       1.64%
Performance Inception Date Apr. 01, 1996                    
Emerging Markets Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   (1.33%)         (2.71%)       1.84%
Performance Inception Date May 02, 2011                    
Emerging Markets Portfolio | MSCI Emerging Markets Index (reflects no deductions for Fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI Emerging Markets Index (reflects no deductions for Fees, expenses, or taxes)                    
Average Annual Return, Percent   7.50%         1.70%       3.64%
International Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted October 29, 2021)                    
Average Annual Return, Percent   7.39%   (1.60%)              
Performance Inception Date Oct. 29, 2021                    
International Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 29, 2021)                    
Average Annual Return, Percent   7.61%   (1.34%)              
Performance Inception Date Oct. 29, 2021                    
International Growth Portfolio | MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                    
Average Annual Return, Percent   3.82%   1.63%              
International Large-Cap Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 3, 2000)                    
Average Annual Return, Percent   3.68%         5.81%       6.62%
Performance Inception Date Jan. 03, 2000                    
International Large-Cap Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   3.88%         6.02%       6.84%
Performance Inception Date May 02, 2011                    
International Large-Cap Portfolio | MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   3.82%         4.73%       5.20%
International Small-Cap Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 1, 2006)                    
Average Annual Return, Percent   (0.98%)         3.51%       4.89%
Performance Inception Date May 01, 2006                    
International Small-Cap Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   (0.78%)         3.72%       5.10%
Performance Inception Date May 02, 2011                    
International Small-Cap Portfolio | MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   3.82%         4.73%       5.20%
International Small-Cap Portfolio | MSCI ACWI ex USA Small Cap Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI ACWI ex USA Small Cap Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   3.36%         4.30%       5.66%
International Value Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1988)                    
Average Annual Return, Percent   3.89%         6.62%       5.23%
Performance Inception Date Jan. 04, 1988                    
International Value Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   4.10%         6.83%       5.44%
Performance Inception Date May 02, 2011                    
International Value Portfolio | MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   3.82%         4.73%       5.20%
Health Sciences Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 2, 2001)                    
Average Annual Return, Percent   4.04%         6.23%       8.90%
Performance Inception Date Jan. 02, 2001                    
Health Sciences Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   4.24%         6.45%       9.12%
Performance Inception Date May 02, 2011                    
Health Sciences Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Health Sciences Portfolio | Russell 3000 Health Care Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 3000 Health Care Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   3.48%         7.18%       8.81%
Real Estate Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 4, 1999)                    
Average Annual Return, Percent   7.51%         4.16%       5.23%
Performance Inception Date Jan. 04, 1999                    
Real Estate Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   7.73%         4.37%       5.44%
Performance Inception Date May 02, 2011                    
Real Estate Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Real Estate Portfolio | MSCI US REITs Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI US REITs Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   7.49%         3.10%       4.38%
Technology Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted January 2, 2001)                    
Average Annual Return, Percent   37.45%         17.76%       14.72%
Performance Inception Date Jan. 02, 2001                    
Technology Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 2, 2011)                    
Average Annual Return, Percent   37.72%         17.99%       14.96%
Performance Inception Date May 02, 2011                    
Technology Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Technology Portfolio | MSCI US IMI Information Technology 25/50 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI US IMI Information Technology 25/50 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   29.14%         21.24%       20.15%
ESG Diversified Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 30, 2021)                    
Average Annual Return, Percent   12.18%     4.10%            
Performance Inception Date Apr. 30, 2021                    
ESG Diversified Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted April 30, 2021)                    
Average Annual Return, Percent   12.40%     4.31%            
Performance Inception Date Apr. 30, 2021                    
ESG Diversified Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                    
Average Annual Return, Percent   25.02%     11.42%            
ESG Diversified Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                    
Average Annual Return, Percent   1.25%     (1.68%)            
ESG Diversified Portfolio | ESG Diversified Composite Benchmark (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] ESG Diversified Composite Benchmark (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                    
Average Annual Return, Percent   12.17%     4.66%            
ESG Diversified Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted October 29, 2021)                    
Average Annual Return, Percent   13.88%   3.33%              
Performance Inception Date Oct. 29, 2021                    
ESG Diversified Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 29, 2021)                    
Average Annual Return, Percent   14.11%   3.52%              
Performance Inception Date Oct. 29, 2021                    
ESG Diversified Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                    
Average Annual Return, Percent   25.02%   9.69%              
ESG Diversified Growth Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                    
Average Annual Return, Percent   1.25%   (2.26%)              
ESG Diversified Growth Portfolio | ESG Diversified Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] ESG Diversified Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes) (based upon Class I inception date)                    
Average Annual Return, Percent   16.01%   5.54%              
PSF Avantis Balanced Allocation Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted April 29, 2016)                    
Average Annual Return, Percent   11.54%         6.36%   7.19%    
Performance Inception Date Apr. 29, 2016                    
PSF Avantis Balanced Allocation Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   11.82%         6.63% 7.12%      
Performance Inception Date Oct. 31, 2019                    
PSF Avantis Balanced Allocation Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                    
Average Annual Return, Percent   25.02%         14.53%   14.83%    
PSF Avantis Balanced Allocation Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                    
Average Annual Return, Percent   1.25%         (0.33%)   1.10%    
PSF Avantis Balanced Allocation Portfolio | PSF Avantis Balanced Allocation Composite Benchmark (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] PSF Avantis Balanced Allocation Composite Benchmark (reflects no deductions for fees, expenses, or taxes) (based on Class I inception date)                    
Average Annual Return, Percent   11.90%         7.24%   8.13%    
Pacific Dynamix - Conservative Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 1, 2009)                    
Average Annual Return, Percent   8.54%         4.39%       4.81%
Performance Inception Date May 01, 2009                    
Pacific Dynamix - Conservative Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   8.75%         4.60% 4.98%      
Performance Inception Date Oct. 31, 2019                    
Pacific Dynamix - Conservative Growth Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Pacific Dynamix - Conservative Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Pacific Dynamix - Conservative Growth Portfolio | Pacific Dynamix – Conservative Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Pacific Dynamix – Conservative Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   8.35%         4.79%       5.41%
Pacific Dynamix - Moderate Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 1, 2009)                    
Average Annual Return, Percent   12.12%         6.63%       6.49%
Performance Inception Date May 01, 2009                    
Pacific Dynamix - Moderate Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   12.35%         6.84% 7.37%      
Performance Inception Date Oct. 31, 2019                    
Pacific Dynamix - Moderate Growth Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Pacific Dynamix - Moderate Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Pacific Dynamix - Moderate Growth Portfolio | Pacific Dynamix – Moderate Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Pacific Dynamix – Moderate Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   12.04%         7.30%       7.37%
Pacific Dynamix - Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 1, 2009)                    
Average Annual Return, Percent   13.90%         8.00%       7.78%
Performance Inception Date May 01, 2009                    
Pacific Dynamix - Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   14.12%         8.22% 8.91%      
Performance Inception Date Oct. 31, 2019                    
Pacific Dynamix - Growth Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Pacific Dynamix - Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Pacific Dynamix - Growth Portfolio | Pacific Dynamix – Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Pacific Dynamix – Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   14.81%         9.29%       8.90%
Portfolio Optimization Conservative Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 2, 2011)                    
Average Annual Return, Percent   6.38%         2.04%       3.14%
Performance Inception Date May 02, 2011                    
Portfolio Optimization Conservative Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   6.59%         2.24% 2.48%      
Performance Inception Date Oct. 31, 2019                    
Portfolio Optimization Conservative Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Portfolio Optimization Conservative Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Portfolio Optimization Conservative Portfolio | Portfolio Optimization Conservative Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Portfolio Optimization Conservative Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   5.34%         2.69%       3.48%
Portfolio Optimization Moderate-Conservative Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 2, 2011)                    
Average Annual Return, Percent   8.41%         3.67%       4.45%
Performance Inception Date May 02, 2011                    
Portfolio Optimization Moderate-Conservative Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   8.63%         3.88% 4.25%      
Performance Inception Date Oct. 31, 2019                    
Portfolio Optimization Moderate-Conservative Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Portfolio Optimization Moderate-Conservative Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Portfolio Optimization Moderate-Conservative Portfolio | Portfolio Optimization Moderate- Conservative Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Portfolio Optimization Moderate- Conservative Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   8.70%         5.07%       5.46%
Portfolio Optimization Moderate Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 2, 2011)                    
Average Annual Return, Percent   11.21%         5.44%       5.81%
Performance Inception Date May 02, 2011                    
Portfolio Optimization Moderate Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   11.43%         5.65% 6.11%      
Performance Inception Date Oct. 31, 2019                    
Portfolio Optimization Moderate Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Portfolio Optimization Moderate Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Portfolio Optimization Moderate Portfolio | Portfolio Optimization Moderate Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Portfolio Optimization Moderate Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   11.09%         6.76%       6.83%
Portfolio Optimization Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 2, 2011)                    
Average Annual Return, Percent   11.36%         6.20%       6.65%
Performance Inception Date May 02, 2011                    
Portfolio Optimization Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   11.58%         6.41% 7.03%      
Performance Inception Date Oct. 31, 2019                    
Portfolio Optimization Growth Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Portfolio Optimization Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Portfolio Optimization Growth Portfolio | Portfolio Optimization Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Portfolio Optimization Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   14.80%         9.23%       8.76%
Portfolio Optimization Aggressive-Growth Portfolio | Class I                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class I (incepted May 2, 2011)                    
Average Annual Return, Percent   12.37%         6.94%       7.26%
Performance Inception Date May 02, 2011                    
Portfolio Optimization Aggressive-Growth Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 31, 2019)                    
Average Annual Return, Percent   12.59%         7.15% 7.87%      
Performance Inception Date Oct. 31, 2019                    
Portfolio Optimization Aggressive-Growth Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
Portfolio Optimization Aggressive-Growth Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
Portfolio Optimization Aggressive-Growth Portfolio | Portfolio Optimization Aggressive-Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Portfolio Optimization Aggressive-Growth Composite Benchmark (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   17.33%         10.89%       10.06%
PD 1-3 Year Corporate Bond Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted April 30, 2014)                    
Average Annual Return, Percent   4.91%         1.82%       1.93%
Performance Inception Date Apr. 30, 2014                    
PD 1-3 Year Corporate Bond Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
PD 1-3 Year Corporate Bond Portfolio | Bloomberg US 1-3 Year Corporate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US 1-3 Year Corporate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   5.28%         2.16%       2.28%
PD Aggregate Bond Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   1.13%         (0.57%)       1.12%
Performance Inception Date May 01, 2009                    
PD Aggregate Bond Index Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
PD High Yield Bond Market Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   8.25%         4.15%       4.98%
Performance Inception Date May 01, 2009                    
PD High Yield Bond Market Portfolio | Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US Aggregate Bond Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   1.25%         (0.33%)       1.35%
PD High Yield Bond Market Portfolio | Bloomberg US High-Yield 2% Issuer Capped Bond Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Bloomberg US High-Yield 2% Issuer Capped Bond Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   8.19%         4.20%       5.16%
PD Large-Cap Growth Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   33.13%         18.76%       16.55%
Performance Inception Date May 01, 2009                    
PD Large-Cap Growth Index Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
PD Large-Cap Growth Index Portfolio | Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 1000 Growth Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   33.36%         18.96%       16.78%
PD Large-Cap Value Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   14.20%         8.61%       8.37%
Performance Inception Date May 01, 2009                    
PD Large-Cap Value Index Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
PD Large-Cap Value Index Portfolio | Russell 1000 Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 1000 Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   14.37%         8.68%       8.49%
PD Mid-Cap Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted October 23, 2020)                    
Average Annual Return, Percent   15.12%       10.66%          
Performance Inception Date Oct. 23, 2020                    
PD Mid-Cap Index Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based on Class P inception date) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (based on Class P inception date) (Regulatory Index)                    
Average Annual Return, Percent 15.29% 25.02%                  
PD Mid-Cap Index Portfolio | Russell Midcap Index (reflects no deductions for fees, expenses, or taxes) (based on Class P inception date)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell Midcap Index (reflects no deductions for fees, expenses, or taxes) (based on Class P inception date)                    
Average Annual Return, Percent 11.05% 15.34%                  
PD Small-Cap Growth Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   14.80%         6.68%       7.92%
Performance Inception Date May 01, 2009                    
PD Small-Cap Growth Index Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
PD Small-Cap Growth Index Portfolio | Russell 2000 Growth Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 2000 Growth Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   15.15%         6.86%       8.09%
PD Small-Cap Value Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   7.64%         7.04%       6.91%
Performance Inception Date May 01, 2009                    
PD Small-Cap Value Index Portfolio | S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] S&P 500 Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   25.02%         14.53%       13.10%
PD Small-Cap Value Index Portfolio | Russell 2000 Value Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Russell 2000 Value Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   8.05%         7.29%       7.14%
PD Emerging Markets Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   6.47%         0.23%       2.63%
Performance Inception Date May 01, 2009                    
PD Emerging Markets Index Portfolio | MSCI Emerging Markets Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI Emerging Markets Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   7.50%         1.70%       3.64%
PD International Large-Cap Index Portfolio | Class P                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] Class P (incepted May 1, 2009)                    
Average Annual Return, Percent   4.42%         5.90%       5.65%
Performance Inception Date May 01, 2009                    
PD International Large-Cap Index Portfolio | MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI EAFE Index (reflects no deductions for fees, expenses, or taxes) (Regulatory Index)                    
Average Annual Return, Percent   3.82%         4.73%       5.20%
PD International Large-Cap Index Portfolio | MSCI World ex USA Large Cap Index (reflects no deductions for fees, expenses, or taxes)                      
Prospectus [Line Items]                      
Average Annual Return, Label [Optional Text] MSCI World ex USA Large Cap Index (reflects no deductions for fees, expenses, or taxes)                    
Average Annual Return, Percent   4.83%         5.65%       5.38%