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Shareholder Report, Average Annual Return (Details)
 12 Months Ended 33 Months Ended 47 Months Ended 50 Months Ended 53 Months Ended 60 Months Ended 67 Months Ended 83 Months Ended 86 Months Ended 98 Months Ended 118 Months Ended 120 Months Ended
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Dec. 31, 2025
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EQ/ALL ASSET GROWTH ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/All Asset Growth Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 17.18%         7.12%           8.28%
EQ/ALL ASSET GROWTH ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/All Asset Growth Allocation Portfolio (Class K)                      
Average Annual Return, Percent 17.53%         7.40%           8.55%
EQ/ULTRA CONSERVATIVE STRATEGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Ultra Conservative Strategy Portfolio (Class IB)                      
Average Annual Return, Percent 6.56%         1.25%           2.08%
EQ/CONSERVATIVE STRATEGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative Strategy Portfolio (Class IB)                      
Average Annual Return, Percent 7.86%         1.93%           3.12%
EQ/CONSERVATIVE GROWTH STRATEGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative Growth Strategy Portfolio (Class IB)                      
Average Annual Return, Percent 9.32%         3.76%           5.10%
EQ/BALANCED STRATEGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Balanced Strategy Portfolio (Class IB)                      
Average Annual Return, Percent 10.05%         4.68%           6.08%
EQ/MODERATE GROWTH STRATEGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate Growth Strategy Portfolio (Class IB)                      
Average Annual Return, Percent 10.83%         5.67%           7.08%
EQ/GROWTH STRATEGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Growth Strategy Portfolio (Class IB)                      
Average Annual Return, Percent 11.44%         6.61%           8.07%
EQ/AGGRESSIVE GROWTH STRATEGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Aggressive Growth Strategy Portfolio (Class IB)                      
Average Annual Return, Percent 12.17%         7.61%           9.04%
EQ/CONSERVATIVE ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 7.48%         1.74%           3.11%
EQ/CONSERVATIVE ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative Allocation Portfolio (Class K)                      
Average Annual Return, Percent 7.89%         2.00%           3.38%
EQ/CONSERVATIVE-PLUS ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative-Plus Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 9.06%         3.38%           4.94%
EQ/CONSERVATIVE-PLUS ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative-Plus Allocation Portfolio (Class K)                      
Average Annual Return, Percent 9.32%         3.64%           5.19%
EQ/MODERATE ALLOCATION PORTFOLIO - (CLASS IA)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate Allocation Portfolio (Class IA)                      
Average Annual Return, Percent 10.20%         4.12%           5.77%
EQ/MODERATE ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 10.25%         4.14%           5.78%
EQ/MODERATE ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate Allocation Portfolio (Class K)                      
Average Annual Return, Percent 10.45%         4.40%           6.04%
EQ/MODERATE-PLUS ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate-Plus Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 11.50%         5.88%           7.67%
EQ/MODERATE-PLUS ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate-Plus Allocation Portfolio (Class K)                      
Average Annual Return, Percent 11.74%         6.16%           7.94%
EQ/AGGRESSIVE ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Aggressive Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 12.97%         7.79%           9.47%
EQ/AGGRESSIVE ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Aggressive Allocation Portfolio (Class K)                      
Average Annual Return, Percent 13.21%         8.07%           9.75%
EQUITABLE CONSERVATIVE GROWTH MF/ETF PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Conservative Growth MF/ETF Portfolio (Class IB)                      
Average Annual Return, Percent 12.03%         4.95%           6.85%
EQUITABLE CONSERVATIVE GROWTH MF/ETF PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Conservative Growth MF/ETF Portfolio (Class K)                      
Average Annual Return, Percent 12.36%         5.22%           7.12%
EQUITABLE MODERATE GROWTH MF/ETF PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Moderate Growth MF/ETF Portfolio (Class IB)                      
Average Annual Return, Percent 13.43%   5.71%                  
EQUITABLE MODERATE GROWTH MF/ETF PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Moderate Growth MF/ETF Portfolio (Class K)                      
Average Annual Return, Percent 13.58%   5.96%                  
EQUITABLE GROWTH MF/ETF PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Growth MF/ETF Portfolio (Class IB)                      
Average Annual Return, Percent 14.37%   7.30%                  
EQUITABLE GROWTH MF/ETF PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Growth MF/ETF Portfolio (Class K)                      
Average Annual Return, Percent 14.63%   7.56%                  
TARGET 2015 ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2015 Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 9.41%         2.84%           5.08%
TARGET 2015 ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2015 Allocation Portfolio (Class K)                      
Average Annual Return, Percent 9.69%         3.09%           5.33%
TARGET 2025 ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2025 Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 13.12%         5.57%           7.41%
TARGET 2025 ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2025 Allocation Portfolio (Class K)                      
Average Annual Return, Percent 13.38%         5.82%           7.68%
TARGET 2035 ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2035 Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 15.70%         7.50%           8.95%
TARGET 2035 ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2035 Allocation Portfolio (Class K)                      
Average Annual Return, Percent 16.03%         7.77%           9.23%
TARGET 2045 ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2045 Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 16.81%         8.58%           9.86%
TARGET 2045 ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2045 Allocation Portfolio (Class K)                      
Average Annual Return, Percent 17.08%         8.85%           10.14%
TARGET 2055 ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2055 Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 17.90%         9.51%           10.81%
TARGET 2055 ALLOCATION PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Target 2055 Allocation Portfolio (Class K)                      
Average Annual Return, Percent 18.22%         9.78%           11.08%
1290 VT MODERATE GROWTH ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Moderate Growth Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 13.34%         6.32%   7.46%        
1290 VT MULTI-ALTERNATIVE STRATEGIES PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Multi-Alternative Strategies Portfolio (Class IB)                      
Average Annual Return, Percent 13.40%         3.50%       3.22%    
1290 VT MULTI-ALTERNATIVE STRATEGIES PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Multi-Alternative Strategies Portfolio (Class K)                      
Average Annual Return, Percent 13.65%         3.75%       3.48%    
1290 VT CONVERTIBLE SECURITIES PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Convertible Securities Portfolio (Class IB)                      
Average Annual Return, Percent 15.79%         2.91%           8.89%
1290 VT CONVERTIBLE SECURITIES PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Convertible Securities Portfolio (Class K)                      
Average Annual Return, Percent 16.09%         3.17%           9.16%
1290 VT DOUBLELINE OPPORTUNISTIC BOND PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT DoubleLine Opportunistic Bond Portfolio (Class IB)                      
Average Annual Return, Percent 7.25%         0.27%           2.12%
1290 VT DOUBLELINE OPPORTUNISTIC BOND PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT DoubleLine Opportunistic Bond Portfolio (Class K)                      
Average Annual Return, Percent 7.63%         0.52%           2.38%
1290 VT EQUITY INCOME PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Equity Income Portfolio (Class IB)                      
Average Annual Return, Percent 13.04%         11.25%           8.85%
1290 VT EQUITY INCOME PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Equity Income Portfolio (Class K)                      
Average Annual Return, Percent 13.21%         11.52%           9.11%
1290 VT GAMCO MERGERS & ACQUISITIONS PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT GAMCO Mergers & Acquisitions Portfolio (Class IB)                      
Average Annual Return, Percent 15.91%         7.70%           5.38%
1290 VT GAMCO MERGERS & ACQUISITIONS PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT GAMCO Mergers & Acquisitions Portfolio (Class K)                      
Average Annual Return, Percent 16.16%         7.96%           5.65%
1290 VT GAMCO SMALL COMPANY VALUE PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT GAMCO Small Company Value Portfolio (Class IB)                      
Average Annual Return, Percent 12.82%         11.24%           10.77%
1290 VT GAMCO SMALL COMPANY VALUE PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT GAMCO Small Company Value Portfolio (Class K)                      
Average Annual Return, Percent 13.11%         11.52%           11.04%
1290 VT HIGH YIELD BOND PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT High Yield Bond Portfolio (Class IB)                      
Average Annual Return, Percent 7.54%         3.92%           5.41%
1290 VT HIGH YIELD BOND PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT High Yield Bond Portfolio (Class K)                      
Average Annual Return, Percent 7.81%         4.20%           5.69%
1290 VT MICRO CAP PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Micro Cap Portfolio (Class IB)                      
Average Annual Return, Percent 16.42%         4.31%           12.26%
1290 VT MICRO CAP PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Micro Cap Portfolio (Class K)                      
Average Annual Return, Percent 16.61%         4.56%           12.51%
1290 VT NATURAL RESOURCES PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Natural Resources Portfolio (Class IB)                      
Average Annual Return, Percent 28.04%         16.06%           9.42%
1290 VT NATURAL RESOURCES PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Natural Resources Portfolio (Class K)                      
Average Annual Return, Percent 28.29%         16.35%           9.70%
1290 VT REAL ESTATE PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Real Estate Portfolio (Class IB)                      
Average Annual Return, Percent 9.67%         2.69%           3.28%
1290 VT REAL ESTATE PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Real Estate Portfolio (Class K)                      
Average Annual Return, Percent 9.87%         2.94%           3.52%
1290 VT SMALL CAP VALUE PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Small Cap Value Portfolio (Class IB)                      
Average Annual Return, Percent 6.11%         13.44%           11.19%
1290 VT SMALL CAP VALUE PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Small Cap Value Portfolio (Class K)                      
Average Annual Return, Percent 6.37%         13.74%           11.47%
1290 VT SMARTBETA EQUITY ESG PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT SmartBeta Equity ESG Portfolio (Class IB)                      
Average Annual Return, Percent 13.95%         10.21%           10.74%
1290 VT SMARTBETA EQUITY ESG PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT SmartBeta Equity ESG Portfolio (Class K)                      
Average Annual Return, Percent 14.31%         10.49%           11.01%
1290 VT SOCIALLY RESPONSIBLE PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Socially Responsible Portfolio (Class IB)                      
Average Annual Return, Percent 17.23%         13.04%           13.83%
ATM LARGE CAP MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name ATM Large Cap Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 12.15%         12.25%           13.09%
ATM MID CAP MANAGED VOLATILITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name ATM Mid Cap Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 2.17%         6.84%           9.19%
ATM SMALL CAP MANAGED VOLATILITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name ATM Small Cap Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 8.54%         4.44%           8.38%
ATM INTERNATIONAL MANAGED VOLATILITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name ATM International Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 24.26%         7.22%           6.93%
EQ/500 MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/500 Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 13.33%         12.43%           13.15%
EQ/500 MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/500 Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 13.62%         12.70%           13.43%
EQ/400 MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/400 Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 3.31%         7.06%           9.21%
EQ/400 MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/400 Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 3.55%         7.33%           9.48%
EQ/2000 MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/2000 Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 9.32%         4.40%           8.33%
EQ/2000 MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/2000 Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 9.60%         4.67%           8.60%
EQ/INTERNATIONAL MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 25.90%         7.28%           6.92%
EQ/INTERNATIONAL MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 26.18%         7.56%           7.19%
EQ/AB DYNAMIC AGGRESSIVE GROWTH PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Dynamic Aggressive Growth Portfolio (Class IB)                      
Average Annual Return, Percent 16.06%         8.69%       7.23%    
EQ/AB DYNAMIC GROWTH PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Dynamic Growth Portfolio (Class IB)                      
Average Annual Return, Percent 14.89%         7.60%           6.95%
EQ/AB DYNAMIC MODERATE GROWTH PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Dynamic Moderate Growth Portfolio (Class IB)                      
Average Annual Return, Percent 13.46%         6.31%           6.12%
EQ/AB SHORT DURATION GOVERNMENT BOND PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Short Duration Government Bond Portfolio (Class IB)                      
Average Annual Return, Percent 4.17%         2.11%           1.56%
EQ/AB SHORT DURATION GOVERNMENT BOND PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Short Duration Government Bond Portfolio (Class K)                      
Average Annual Return, Percent 4.40%         2.36%           1.80%
EQ/AB SMALL CAP GROWTH PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Small Cap Growth Portfolio (Class IB)                      
Average Annual Return, Percent 9.21%         3.43%           10.10%
EQ/AB SMALL CAP GROWTH PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Small Cap Growth Portfolio (Class K)                      
Average Annual Return, Percent 9.52%         3.69%           10.37%
EQ/AB SUSTAINABLE U.S. THEMATIC PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Sustainable U.S. Thematic Portfolio (Class IB)                      
Average Annual Return, Percent 5.37%   4.88%                  
EQ/AB SUSTAINABLE U.S. THEMATIC PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Sustainable U.S. Thematic Portfolio (Class K)                      
Average Annual Return, Percent 5.62%   5.13%                  
EQ/AMERICAN CENTURY MID CAP VALUE PORTFOLIO - CLASS IB                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/American Century Mid Cap Value Portfolio (Class IB)                      
Average Annual Return, Percent 8.72%         8.64%     8.24%      
EQ/AMERICAN CENTURY MID CAP VALUE PORTFOLIO - CLASS K                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/American Century Mid Cap Value Portfolio (Class K)                      
Average Annual Return, Percent 8.98%         8.91% 10.42%          
EQ/AMERICAN CENTURY MODERATE GROWTH ALLOCATION PORTFOLIO - CLASS IB                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/American Century Moderate Growth Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 12.37%         5.35%   6.55%        
EQ/CAPITAL GROUP RESEARCH PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Capital Group Research Portfolio (Class IB)                      
Average Annual Return, Percent 19.83%         13.80%           15.00%
EQ/CLEARBRIDGE LARGE CAP GROWTH ESG PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/ClearBridge Large Cap Growth ESG Portfolio (Class IB)                      
Average Annual Return, Percent 7.69%         10.47%           13.63%
EQ/CLEARBRIDGE LARGE CAP GROWTH ESG PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/ClearBridge Large Cap Growth ESG Portfolio (Class K)                      
Average Annual Return, Percent 7.96%         10.75%           13.91%
EQ/CLEARBRIDGE SELECT EQUITY MANAGED VOLATILITY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Clearbridge Select Equity Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 7.66%         8.42%           12.21%
EQ/CLEARBRIDGE SELECT EQUITY MANAGED VOLATILITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Clearbridge Select Equity Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 7.92%     5.11%                
EQ/COMMON STOCK INDEX PORTFOLIO (CLASS IA)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Common Stock Index Portfolio (Class IA)                      
Average Annual Return, Percent 16.30%         12.50%           13.54%
EQ/COMMON STOCK INDEX PORTFOLIO - CLASS IB                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Common Stock Index Portfolio (Class IB)                      
Average Annual Return, Percent 16.28%         12.50%           13.55%
EQ/CORE BOND INDEX PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Core Bond Index Portfolio (Class IB)                      
Average Annual Return, Percent 6.43%         0.35%           1.70%
EQ/CORE BOND INDEX PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Core Bond Index Portfolio (Class K)                      
Average Annual Return, Percent 6.59%         0.60%           1.95%
EQ/CORE PLUS BOND PORTFOLIO - (CLASS IA)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Core Plus Bond Portfolio (Class IA)                      
Average Annual Return, Percent 8.53%         (0.74%)           2.16%
EQ/CORE PLUS BOND PORTFOLIO - CLASS IB                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Core Plus Bond Portfolio (Class IB)                      
Average Annual Return, Percent 8.58%         (0.68%)           2.17%
EQ/CORE PLUS BOND PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Core Plus Bond Portfolio (Class K)                      
Average Annual Return, Percent 8.76%         (0.44%)           2.43%
EQ/EMERGING MARKETS EQUITY PLUS PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Emerging Markets Equity PLUS Portfolio (Class IB)                      
Average Annual Return, Percent 33.46%         4.64%           7.73%
EQ/EMERGING MARKETS EQUITY PLUS PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Emerging Markets Equity PLUS Portfolio (Class K)                      
Average Annual Return, Percent 33.75%         4.89%           8.01%
EQ/EQUITY 500 INDEX PORTFOLIO - CLASS IA                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Equity 500 Index Portfolio (Class IA)                      
Average Annual Return, Percent 17.24%         13.79%           14.16%
EQ/EQUITY 500 INDEX PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Equity 500 Index Portfolio (Class IB)                      
Average Annual Return, Percent 17.23%         13.79%           14.15%
EQ/EQUITY 500 INDEX PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Equity 500 Index Portfolio (Class K)                      
Average Annual Return, Percent 17.53%         14.08%           14.44%
EQ/FIDELITY INSTITUTIONAL AM® LARGE CAP PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Fidelity Institutional AM® Large Cap Portfolio (Class IB)                      
Average Annual Return, Percent 18.34%         13.86%     15.45%      
EQ/FIDELITY INSTITUTIONAL AM® LARGE CAP PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Fidelity Institutional AM® Large Cap Portfolio (Class K)                      
Average Annual Return, Percent 18.64%         14.14%     15.73%      
EQ/FRANKLIN RISING DIVIDENDS PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Franklin Rising Dividends Portfolio (Class IB)                      
Average Annual Return, Percent 11.84%         9.50%     11.59%      
EQ/FRANKLIN SMALL CAP VALUE MANAGED VOLATILITY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Franklin Small Cap Value Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 7.06%         6.11%           8.71%
EQ/FRANKLIN SMALL CAP VALUE MANAGED VOLATILITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Franklin Small Cap Value Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 7.24%         6.36%           8.98%
EQ/GLOBAL EQUITY MANAGED VOLATILITY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Global Equity Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 19.14%         8.33%           9.47%
EQ/GLOBAL EQUITY MANAGED VOLATILITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Global Equity Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 19.42%         8.59%           9.74%
EQ/GOLDMAN SACHS GROWTH ALLOCATION PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Goldman Sachs Growth Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 12.09%         7.29%   7.88%        
EQ/GOLDMAN SACHS MID CAP VALUE PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Goldman Sachs Mid Cap Value Portfolio (Class IB)                      
Average Annual Return, Percent 9.22%         9.66%     10.42%      
EQ/GOLDMAN SACHS MODERATE GROWTH ALLOCATION PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Goldman Sachs Moderate Growth Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 10.02%         5.02%           5.76%
EQ/INTERMEDIATE CORPORATE BOND PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Intermediate Corporate Bond Portfolio (Class IB)                      
Average Annual Return, Percent 9.06% 5.50%                    
EQ/INTERMEDIATE CORPORATE BOND PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Intermediate Corporate Bond Portfolio (Class K)                      
Average Annual Return, Percent 9.21% 5.75%                    
EQ/INTERMEDIATE GOVERNMENT BOND PORTFOLIO - CLASS IA                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Intermediate Government Bond Portfolio (Class IA)                      
Average Annual Return, Percent 5.51%         0.30%           1.14%
EQ/INTERMEDIATE GOVERNMENT BOND PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Intermediate Government Bond Portfolio (Class IB)                      
Average Annual Return, Percent 5.54%         0.30%           1.15%
EQ/INTERMEDIATE GOVERNMENT BOND PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Intermediate Government Bond Portfolio (Class K)                      
Average Annual Return, Percent 5.87%         0.56%           1.40%
EQ/INTERNATIONAL CORE MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Core Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 26.12%         7.52%           7.48%
EQ/INTERNATIONAL CORE MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Core Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 26.31%         7.77%           7.74%
EQ/INTERNATIONAL EQUITY INDEX PORTFOLIO - (CLASS IA)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Equity Index Portfolio (Class IA)                      
Average Annual Return, Percent 31.53%         9.91%           8.07%
EQ/INTERNATIONAL EQUITY INDEX PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Equity Index Portfolio (Class IB)                      
Average Annual Return, Percent 31.46%         9.91%           8.07%
EQ/INTERNATIONAL EQUITY INDEX PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Equity Index Portfolio (Class K)                      
Average Annual Return, Percent 31.79%         10.20%           8.35%
EQ/INTERNATIONAL VALUE MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Value Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 26.66%         7.75%           6.77%
EQ/INTERNATIONAL VALUE MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/International Value Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 27.00%         8.01%           7.04%
EQ/INVESCO COMSTOCK PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Comstock Portfolio (Class IB)                      
Average Annual Return, Percent 16.93%         14.99%           11.71%
EQ/INVESCO COMSTOCK PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Comstock Portfolio (Class K)                      
Average Annual Return, Percent 17.20%         15.27%           11.98%
EQ/INVESCO GLOBAL PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Global Portfolio (Class IB)                      
Average Annual Return, Percent 15.40%         6.95%           10.59%
EQ/INVESCO GLOBAL REAL ASSETS PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Global Real Assets Portfolio (Class IB)                      
Average Annual Return, Percent 15.93%         7.11%     5.77%      
EQ/INVESCO MODERATE ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Moderate Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 9.42%         4.61%           5.29%
EQ/INVESCO MODERATE GROWTH ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Moderate Growth Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 12.63%         5.89%   7.54%        
EQ/Janus Enterprise Portfolio (Class IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Janus Enterprise Portfolio (Class IB)                      
Average Annual Return, Percent 8.05%         7.06%           10.61%
EQ/JANUS ENTERPRISE PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Janus Enterprise Portfolio (Class K)                      
Average Annual Return, Percent 8.34%         7.34%           10.89%
EQ/JPMORGAN GROWTH ALLOCATION PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Growth Allocation Portfolio (Class IB)                      
Average Annual Return, Percent 10.81%         6.54%       6.56%    
EQ/JPMORGAN GROWTH STOCK PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Growth Stock Portfolio (Class IB)                      
Average Annual Return, Percent 14.76%         9.43%           14.08%
EQ/JPMORGAN GROWTH STOCK PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Growth Stock Portfolio (Class K)                      
Average Annual Return, Percent 15.03%         9.70%           14.37%
EQ/JPMORGAN HEDGED EQUITY AND PREMIUM INCOME PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Hedged Equity and Premium Income Portfolio (Class IB)                      
Average Annual Return, Percent 12.41%         4.65%         5.22%  
EQ/JPMORGAN VALUE OPPORTUNITIES PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Value Opportunities Portfolio (Class IB)                      
Average Annual Return, Percent 15.40%         12.77%           12.08%
EQ/JPMORGAN VALUE OPPORTUNITIES PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Value Opportunities Portfolio (Class K)                      
Average Annual Return, Percent 15.66%         13.05%           12.36%
EQ/LARGE CAP CORE MANAGED VOLATILITY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Core Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 10.88%         12.03%           12.83%
EQ/LARGE CAP CORE MANAGED VOLATILITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Core Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 11.12%         12.31%           13.11%
EQ/LARGE CAP GROWTH INDEX PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Growth Index Portfolio (Class IB)                      
Average Annual Return, Percent 17.74%         14.51%           17.26%
EQ/LARGE CAP GROWTH INDEX PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Growth Index Portfolio (Class K)                      
Average Annual Return, Percent 18.00%         14.80%           17.55%
EQ/LARGE CAP GROWTH MANAGED VOLATILITY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Growth Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 11.06%         11.64%           15.01%
EQ/LARGE CAP GROWTH MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Growth Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 11.34%         11.91%           15.30%
EQ/LARGE CAP VALUE INDEX PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Value Index Portfolio (Class IB)                      
Average Annual Return, Percent 15.04%         10.52%           9.77%
EQ/LARGE CAP VALUE INDEX PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Value Index Portfolio (Class K)                      
Average Annual Return, Percent 15.31%         10.80%           10.05%
EQ/LARGE CAP VALUE MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Value Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 10.62%         9.69%           9.56%
EQ/LARGE CAP VALUE MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Large Cap Value Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 10.86%         9.96%           9.82%
EQ/LAZARD EMERGING MARKETS EQUITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Lazard Emerging Markets Equity Portfolio (Class IB)                      
Average Annual Return, Percent 42.06%         10.84%     9.61%      
EQ/LONG-TERM BOND PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Long-Term Bond Portfolio (Class IB)                      
Average Annual Return, Percent 5.85%       (5.74%)              
EQ/LONG-TERM BOND PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Long-Term Bond Portfolio (Class K)                      
Average Annual Return, Percent 6.11%       (5.51%)              
EQ/LOOMIS SAYLES GROWTH PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Loomis Sayles Growth Portfolio (Class IB)                      
Average Annual Return, Percent 13.08%         12.72%           15.87%
EQ/LOOMIS SAYLES GROWTH PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Loomis Sayles Growth Portfolio (Class K)                      
Average Annual Return, Percent 13.31%         12.99%           16.15%
EQ/MFS INTERNATIONAL GROWTH PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/MFS International Growth Portfolio (Class IB)                      
Average Annual Return, Percent 20.90%         6.90%           9.61%
EQ/MFS INTERNATIONAL GROWTH PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/MFS International Growth Portfolio (Class K)                      
Average Annual Return, Percent 21.38%         7.19%           9.88%
EQ/MFS INTERNATIONAL INTRINSIC VALUE PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/MFS International Intrinsic Value Portfolio (Class IB)                      
Average Annual Return, Percent 32.95%         6.99%     10.32%      
EQ/MFS MID CAP FOCUSED GROWTH PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/MFS Mid Cap Focused Growth Portfolio (Class IB)                      
Average Annual Return, Percent 5.60%         5.09%     10.61%      
EQ/MFS TECHNOLOGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/MFS Technology Portfolio (Class IB)                      
Average Annual Return, Percent 16.24%         12.06%     17.34%      
EQ/MFS UTILITIES SERIES PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/MFS Utilities Series Portfolio (Class IB)                      
Average Annual Return, Percent 14.65%         7.33%     8.61%      
EQ/MFS UTILITIES SERIES PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/MFS Utilities Series Portfolio (Class K)                      
Average Annual Return, Percent 14.94%         7.61%     8.89%      
EQ/MID CAP INDEX PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Mid Cap Index Portfolio (Class IB)                      
Average Annual Return, Percent 6.80%         8.42%           9.99%
EQ/MID CAP INDEX PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Mid Cap Index Portfolio (Class K)                      
Average Annual Return, Percent 7.10%         8.69%           10.26%
EQ/MID CAP VALUE MANAGED VOLATILITY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Mid Cap Value Managed Volatility Portfolio (Class IB)                      
Average Annual Return, Percent 4.98%         7.62%           8.20%
EQ/MID CAP VALUE MANAGED VOLATILITY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Mid Cap Value Managed Volatility Portfolio (Class K)                      
Average Annual Return, Percent 5.20%         7.89%           8.47%
EQ/MONEY MARKET PORTFOLIO - (CLASS IA)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Money Market Portfolio (Class IA)                      
Average Annual Return, Percent 3.66%         2.79%           1.73%
EQ/MONEY MARKET PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Money Market Portfolio (Class IB)                      
Average Annual Return, Percent 3.66%         2.79%           1.73%
EQ/MORGAN STANLEY SMALL CAP GROWTH PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Morgan Stanley Small Cap Growth Portfolio (Class IB)                      
Average Annual Return, Percent 7.39%         (0.01%)           12.95%
EQ/MORGAN STANLEY SMALL CAP GROWTH PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Morgan Stanley Small Cap Growth Portfolio (Class K)                      
Average Annual Return, Percent 7.67%         0.25%           13.24%
EQ/PIMCO GLOBAL REAL RETURN PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/PIMCO Global Real Return Portfolio (Class IB)                      
Average Annual Return, Percent 5.52%         (0.90%)           2.48%
EQ/PIMCO GLOBAL REAL RETURN PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/PIMCO Global Real Return Portfolio (Class K)                      
Average Annual Return, Percent 5.75%         (0.68%)           2.73%
EQ/PIMCO REAL RETURN PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/PIMCO Real Return Portfolio (Class IB)                      
Average Annual Return, Percent 7.95%         1.24%     3.57%      
EQ/PIMCO TOTAL RETURN ESG PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/PIMCO Total Return ESG Portfolio (Class IB)                      
Average Annual Return, Percent 8.70%         (0.14%)     2.46%      
EQ/PIMCO ULTRA SHORT BOND PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/PIMCO Ultra Short Bond Portfolio (Class IB)                      
Average Annual Return, Percent 4.47%         2.93%           2.32%
EQ/PIMCO ULTRA SHORT BOND PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/PIMCO Ultra Short Bond Portfolio (Class K)                      
Average Annual Return, Percent 4.73%         3.19%           2.57%
EQ/QUALITY BOND PLUS PORTFOLIO (CLASS IA)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Quality Bond PLUS Portfolio (Class IA)                      
Average Annual Return, Percent 6.29%         (0.17%)           1.31%
EQ/QUALITY BOND PLUS PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Quality Bond PLUS Portfolio (Class IB)                      
Average Annual Return, Percent 6.32%         (0.19%)           1.31%
EQ/QUALITY BOND PLUS PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Quality Bond PLUS Portfolio (Class K)                      
Average Annual Return, Percent 6.41%         0.05%           1.56%
EQ/SMALL COMPANY INDEX PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Small Company Index Portfolio (Class IB)                      
Average Annual Return, Percent 12.57%         6.16%           9.44%
EQ/SMALL COMPANY INDEX PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Small Company Index Portfolio (Class K)                      
Average Annual Return, Percent 12.82%         6.41%           9.70%
EQ/T. ROWE PRICE HEALTH SCIENCES PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/T. Rowe Price Health Sciences Portfolio (Class IB)                      
Average Annual Return, Percent 19.21%         3.62%     8.06%      
EQ/VALUE EQUITY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Value Equity Portfolio (Class IB)                      
Average Annual Return, Percent 11.01%         8.65%           8.47%
EQ/VALUE EQUITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Value Equity Portfolio (Class K)                      
Average Annual Return, Percent 11.31%         8.93%           8.74%
EQ/WELLINGTON ENERGY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Wellington Energy Portfolio (Class IB)                      
Average Annual Return, Percent 12.17%         17.90%     (0.37%)      
MULTIMANAGER AGGRESSIVE EQUITY PORTFOLIO (CLASS IA)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Multimanager Aggressive Equity Portfolio (Class IA)                      
Average Annual Return, Percent 16.32%         11.47%           15.67%
MULTIMANAGER AGGRESSIVE EQUITY PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Multimanager Aggressive Equity Portfolio (Class IB)                      
Average Annual Return, Percent 16.30%         11.47%           15.66%
MULTIMANAGER AGGRESSIVE EQUITY PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Multimanager Aggressive Equity Portfolio (Class K)                      
Average Annual Return, Percent 16.60%         11.75%           15.95%
MULTIMANAGER CORE BOND PORTFOLIO (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Multimanager Core Bond Portfolio (Class IB)                      
Average Annual Return, Percent 7.11%         (0.27%)           1.72%
MULTIMANAGER CORE BOND PORTFOLIO (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Multimanager Core Bond Portfolio (Class K)                      
Average Annual Return, Percent 7.40%         0.00%           1.97%
MULTIMANAGER TECHNOLOGY PORTFOLIO - (CLASS IB)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Multimanager Technology Portfolio (Class IB)                      
Average Annual Return, Percent 25.87%         12.46%           19.41%
MULTIMANAGER TECHNOLOGY PORTFOLIO - (CLASS K)                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Multimanager Technology Portfolio (Class K)                      
Average Annual Return, Percent 26.21%         12.74%           19.71%
Standard & Poor's 500 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P 500® Index                      
Average Annual Return, Percent 17.88%   13.30% 11.77%   14.42%   16.22% 15.26% 14.60% 15.75% 14.82%
Bloomberg U.S. Aggregate Bond Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index                      
Average Annual Return, Percent 7.30% 3.83%     (0.30%) (0.36%)     2.29% 1.78%   2.01%
MSCI ACWI (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI ACWI (Net) Index                      
Average Annual Return, Percent 22.34%   11.16%     11.19%           11.72%
Russell 1000® Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 1000® Index                      
Average Annual Return, Percent 17.37%         13.59% 15.77%   15.00%     14.59%
Russell 3000 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 3000® Index                      
Average Annual Return, Percent 17.15%         13.15%     14.59%     14.29%
ICE BofA U.S. High Yield Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name ICE BofA U.S. High Yield Index                      
Average Annual Return, Percent 8.59%         4.55%           6.48%
MSCI World (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI World (Net) Index                      
Average Annual Return, Percent 21.09%         12.15%     12.97%     12.17%
MSCI Emerging Markets (Gross Dividends) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI Emerging Markets (Gross Dividends) Index                      
Average Annual Return, Percent 34.36%         4.67%           8.86%
MSCI EAFE® Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI EAFE® Index                      
Average Annual Return, Percent 31.22%         8.92%     9.18%     8.18%
MSCI Emerging Markets (Net Dividends) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI Emerging Markets (Net Dividends) Index                      
Average Annual Return, Percent 33.57%         4.20%     7.80%      
MSCI ACWI ex USA (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI ACWI ex USA (Net) Index                      
Average Annual Return, Percent 32.38%         7.91%           8.41%
Bloomberg Global Aggregate Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg Global Aggregate Index                      
Average Annual Return, Percent 8.17%         (2.15%)           1.26%
EQ/All Asset Growth Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/All Asset Growth Allocation Index                      
Average Annual Return, Percent 13.37%         6.87%           7.51%
Bloomberg U.S. Intermediate Government/Credit Bond Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Intermediate Government/Credit Bond Index                      
Average Annual Return, Percent 6.97%         0.96%           2.29%
EQ/Ultra Conservative Strategy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Ultra Conservative Strategy Index                      
Average Annual Return, Percent 7.61%         1.78%           2.91%
Bloomberg U.S. Intermediate Government Bond Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Intermediate Government Bond Index                      
Average Annual Return, Percent 6.50%         0.64%       1.88% 1.57% 1.76%
EQ/Conservative Strategy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative Strategy Index                      
Average Annual Return, Percent 8.58%         2.43%           3.68%
EQ/Conservative Growth Strategy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative Growth Strategy Index                      
Average Annual Return, Percent 10.81%         4.47%           5.78%
EQ/Balanced Strategy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Balanced Strategy Index                      
Average Annual Return, Percent 11.95%         5.68%           6.96%
EQ/Moderate Growth Strategy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate Growth Strategy Index                      
Average Annual Return, Percent 13.05%         6.75%           8.00%
EQ/Growth Strategy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Growth Strategy Index                      
Average Annual Return, Percent 14.15%         7.83%           9.04%
EQ/Aggressive Growth Strategy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Aggressive Growth Strategy Index                      
Average Annual Return, Percent 15.28%         9.11%           10.22%
EQ/Conservative Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative Allocation Index                      
Average Annual Return, Percent 8.80%         2.42%           3.60%
EQ/Conservative-Plus Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Conservative-Plus Allocation Index                      
Average Annual Return, Percent 11.20%         4.49%           5.68%
EQ/Moderate Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate Allocation Index                      
Average Annual Return, Percent 12.79%         5.41%           6.57%
EQ/Moderate-Plus Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Moderate-Plus Allocation Index                      
Average Annual Return, Percent 15.24%         7.56%           8.62%
EQ/Aggressive Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Aggressive Allocation Index                      
Average Annual Return, Percent 17.91%         9.99%           10.78%
Equitable Conservative Growth MF/ETF Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Conservative Growth MF/ETF Index                      
Average Annual Return, Percent 13.21%         4.26%           6.02%
Equitable Moderate Growth MF/ETF Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Moderate Growth MF/ETF Index                      
Average Annual Return, Percent 16.22%   7.15%                  
Bloomberg U.S. Aggregate Bond Index One [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index                      
Average Annual Return, Percent 7.30%   1.03%                  
Equitable Growth MF/ETF Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Equitable Growth MF/ETF Index                      
Average Annual Return, Percent 19.26%   9.16%                  
S&P Target Date 2015 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P Target Date 2015 Index                      
Average Annual Return, Percent 12.15%         4.91%           6.34%
S&P Target Date 2025 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P Target Date 2025 Index                      
Average Annual Return, Percent 13.98%         6.07%           7.57%
S&P Target Date 2035 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P Target Date 2035 Index                      
Average Annual Return, Percent 16.80%         8.19%           9.32%
S&P Target Date 2045 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P Target Date 2045 Index                      
Average Annual Return, Percent 19.48%         9.84%           10.54%
S And P Target Date 2055 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P Target Date 2055 Index                      
Average Annual Return, Percent 20.06%         10.27%           10.91%
1290 VT Moderate Growth Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name 1290 VT Moderate Growth Allocation Index                      
Average Annual Return, Percent 16.28%         7.64%   9.71%        
Bloomberg U.S. Credit Corporate 5-10 Year Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Credit Corporate 5-10 Year Index                      
Average Annual Return, Percent 9.58% 6.25%       0.86%   3.58%        
ICE BofA U.S. 3-Month Treasury Bill Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name ICE BofA U.S. 3-Month Treasury Bill Index                      
Average Annual Return, Percent 4.21%         3.19%       2.57% 2.22% 2.19%
Bloomberg U.S. Convertible Liquid Bond Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Convertible Liquid Bond Index                      
Average Annual Return, Percent 16.95%         4.00%           11.40%
Russell 1000® Value Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 1000® Value Index                      
Average Annual Return, Percent 15.91%         11.33%           10.53%
S&P Long-Only Merger Arbitrage Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P Long-Only Merger Arbitrage Index                      
Average Annual Return, Percent 6.83%         3.15%           3.78%
Russell 2000 Value Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 2000® Value Index                      
Average Annual Return, Percent 12.59%         8.88%           9.27%
Russell Microcap Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell Microcap® Index                      
Average Annual Return, Percent 22.98%         7.32%           9.58%
MSCI World Commodity Producers (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI World Commodity Producers (Net) Index                      
Average Annual Return, Percent 28.64%         16.61%           9.96%
FTSE EPRA/NAREIT Developed Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name FTSE EPRA/NAREIT Developed Index                      
Average Annual Return, Percent 10.70%         3.78%           4.25%
MSCI KLD 400 Social Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI KLD 400 Social Index                      
Average Annual Return, Percent 18.23%         14.06%           14.89%
Russell 1000 Growth Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 1000® Growth Index                      
Average Annual Return, Percent 18.56%         15.32%           18.13%
S&P MidCap 400 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P MidCap 400® Index                      
Average Annual Return, Percent 7.50%         9.12%           10.72%
Russell 2000 Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 2000® Index                      
Average Annual Return, Percent 12.81%         6.09%           9.62%
EQ/AB Dynamic Aggressive Growth Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Dynamic Aggressive Growth Index                      
Average Annual Return, Percent 17.94%         9.81%       9.98%    
EQ/AB Dynamic Growth Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Dynamic Growth Index                      
Average Annual Return, Percent 16.55%         8.73%           9.35%
EQ/AB Dynamic Moderate Growth Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/AB Dynamic Moderate Growth Index                      
Average Annual Return, Percent 15.00%         7.52%           8.26%
ICE BofA 1-Year U.S. Treasury Note Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name ICE BofA 1-Year U.S. Treasury Note Index                      
Average Annual Return, Percent 4.38%         2.59%           2.09%
Russell 2000® Growth Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 2000® Growth Index                      
Average Annual Return, Percent 13.01%         3.18%           9.57%
Russell Midcap® Value Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell Midcap® Value Index                      
Average Annual Return, Percent 11.05%         9.83% 11.58%   9.39%     9.78%
EQ/American Century Moderate Growth Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/American Century Moderate Growth Allocation Index                      
Average Annual Return, Percent 16.44%         7.67%   9.75%        
EQ/Goldman Sachs Growth Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Goldman Sachs Growth Allocation Index                      
Average Annual Return, Percent 16.22%         9.79%   11.47%        
EQ/Goldman Sachs Moderate Growth Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Goldman Sachs Moderate Growth Allocation Index                      
Average Annual Return, Percent 14.83%         7.45%           8.48%
International Proxy Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name International Proxy Index                      
Average Annual Return, Percent 32.07%         10.61%           8.75%
MSCI ACWI Growth (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI ACWI Growth (Net) Index                      
Average Annual Return, Percent 22.44%         11.12%           13.99%
S & P Real Assets Equity (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P Real Assets Equity (Net) Index                      
Average Annual Return, Percent 14.49%         7.15%     5.93%      
EQ/Invesco Moderate Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Moderate Allocation Index                      
Average Annual Return, Percent 14.15%         6.10%           6.87%
EQ/Invesco Moderate Growth Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Invesco Moderate Growth Allocation Index                      
Average Annual Return, Percent 17.04%         7.22%   9.25%        
Russell Midcap® Growth Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell Midcap® Growth Index                      
Average Annual Return, Percent 8.66%         6.65%     12.57%     12.49%
EQ/JPMorgan Growth Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Growth Allocation Index                      
Average Annual Return, Percent 14.64%         9.11%       9.16%    
EQ/JPMorgan Hedged Equity and Premium Income Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/JPMorgan Hedged Equity and Premium Income Index                      
Average Annual Return, Percent 12.37%         10.10%         10.45%  
EQ/Franklin Moderate Allocation Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name EQ/Franklin Moderate Allocation Index                      
Average Annual Return, Percent 15.47%         5.99%         7.41%  
Bloomberg U.S. Long Government/Credit Bond Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Long Government/Credit Bond Index                      
Average Annual Return, Percent 6.62%       (5.09%)              
Russell 3000 Growth Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 3000® Growth Index                      
Average Annual Return, Percent 18.15%         14.59%           17.59%
MSCI ACWI ex USA Growth (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI ACWI ex USA Growth (Net) Index                      
Average Annual Return, Percent 25.65%         4.01%           7.92%
MSCI EAFE® Value (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI EAFE® Value (Net) Index                      
Average Annual Return, Percent 42.25%         13.36%     9.82%      
S&P North American Technology Sector Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name S&P North American Technology Sector Index                      
Average Annual Return, Percent 27.82%         18.02%     22.32%     22.54%
MSCI ACWI Utilities (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI ACWI Utilities (Net) Index                      
Average Annual Return, Percent 23.47%         7.79%     8.71%      
Bloomberg World Government Inflation-Linked Bond Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg World Government Inflation-Linked Bond Index                      
Average Annual Return, Percent 4.67%         (0.91%)           2.63%
Bloomberg U.S. Treasury Inflation-Linked Bond Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Bloomberg U.S. Treasury Inflation-Linked Bond Index                      
Average Annual Return, Percent 7.01%         1.12%     3.53%      
Russell 3000 Health Care Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name Russell 3000® Health Care Index                      
Average Annual Return, Percent 14.56%         6.31%     8.96%      
MSCI ACWI Energy (Net) Index [Member]                        
Average Annual Return [Line Items]                        
Line Graph and Table Measure Name MSCI ACWI Energy (Net) Index                      
Average Annual Return, Percent 13.71%         17.04%     5.71%      
[1] Date of inception: February 15, 2022
[2] Date of inception: February 1, 2019
[3] Date of inception: November 13, 2017
[4] Date of inception: October 22, 2018
[5] Date of inception: June 8, 2020
[6] Date of inception: October 26, 2021.
[7] Date of inception: April 3, 2023
[8] Date of inception: February 22, 2016
[9] Date of inception: August 2, 2021