v3.26.1
Shareholder Report, Holdings (Details)
Jun. 30, 2026
Morningstar Conservative ETF Asset Allocation Portfolio | Class I | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 16.73%
Morningstar Conservative ETF Asset Allocation Portfolio | Class I | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 73.21%
Morningstar Conservative ETF Asset Allocation Portfolio | Class I | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 5.57%
Morningstar Conservative ETF Asset Allocation Portfolio | Class I | Non-U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.97%
Morningstar Conservative ETF Asset Allocation Portfolio | Class I | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.52%
Morningstar Conservative ETF Asset Allocation Portfolio | Class II | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 16.73%
Morningstar Conservative ETF Asset Allocation Portfolio | Class II | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 73.21%
Morningstar Conservative ETF Asset Allocation Portfolio | Class II | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 5.57%
Morningstar Conservative ETF Asset Allocation Portfolio | Class II | Non-U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.97%
Morningstar Conservative ETF Asset Allocation Portfolio | Class II | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 1.52%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 31.04%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 54.45%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 11.71%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | Non-U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 1.98%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.82%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 31.04%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 54.45%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 11.71%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | Non-U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 1.98%
Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.82%
Morningstar Balanced ETF Asset Allocation Portfolio | Class I | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 44.14%
Morningstar Balanced ETF Asset Allocation Portfolio | Class I | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 36.15%
Morningstar Balanced ETF Asset Allocation Portfolio | Class I | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 18.74%
Morningstar Balanced ETF Asset Allocation Portfolio | Class I | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.97%
Morningstar Balanced ETF Asset Allocation Portfolio | Class II | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 44.14%
Morningstar Balanced ETF Asset Allocation Portfolio | Class II | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 36.15%
Morningstar Balanced ETF Asset Allocation Portfolio | Class II | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 18.74%
Morningstar Balanced ETF Asset Allocation Portfolio | Class II | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.97%
Morningstar Growth ETF Asset Allocation Portfolio | Class I | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 57.55%
Morningstar Growth ETF Asset Allocation Portfolio | Class I | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 17.42%
Morningstar Growth ETF Asset Allocation Portfolio | Class I | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 24.97%
Morningstar Growth ETF Asset Allocation Portfolio | Class I | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.06%
Morningstar Growth ETF Asset Allocation Portfolio | Class II | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 57.55%
Morningstar Growth ETF Asset Allocation Portfolio | Class II | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 17.42%
Morningstar Growth ETF Asset Allocation Portfolio | Class II | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 24.97%
Morningstar Growth ETF Asset Allocation Portfolio | Class II | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.06%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 65.96%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 31.11%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.03%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II | U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 65.96%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II | U.S. Bonds  
Holdings [Line Items]  
Percent of Net Asset Value 2.90%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II | Non-U.S. Equity  
Holdings [Line Items]  
Percent of Net Asset Value 31.11%
Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II | Cash Equivalents [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.03%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | U.S. Energy Infrastructure Companies  
Holdings [Line Items]  
Percent of Net Asset Value 30.54%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Canadian Energy Infrastructure Companies  
Holdings [Line Items]  
Percent of Net Asset Value 27.21%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | U.S. Energy Infrastructure MLPs  
Holdings [Line Items]  
Percent of Net Asset Value 27.10%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | U.S. General Partners  
Holdings [Line Items]  
Percent of Net Asset Value 14.57%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Cash, Cash Equivalents, & Other Net Assets  
Holdings [Line Items]  
Percent of Net Asset Value 0.58%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Enbridge, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 8.27%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Energy Transfer LP  
Holdings [Line Items]  
Percent of Net Asset Value 7.83%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Enterprise Products Partners LP  
Holdings [Line Items]  
Percent of Net Asset Value 7.06%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | The Williams Cos., Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 6.33%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | DT Midstream, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.28%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Kinder Morgan, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.15%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Targa Resources Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 5.02%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Plains GP Holdings LP  
Holdings [Line Items]  
Percent of Net Asset Value 4.91%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Cheniere Energy, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | ONEOK, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.89%
ALPS | Alerian Energy Infrastructure Portfolio | Class I | Total % of Top 10 Holdings  
Holdings [Line Items]  
Percent of Net Asset Value 59.64%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | U.S. Energy Infrastructure Companies  
Holdings [Line Items]  
Percent of Net Asset Value 30.54%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Canadian Energy Infrastructure Companies  
Holdings [Line Items]  
Percent of Net Asset Value 27.21%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | U.S. Energy Infrastructure MLPs  
Holdings [Line Items]  
Percent of Net Asset Value 27.10%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | U.S. General Partners  
Holdings [Line Items]  
Percent of Net Asset Value 14.57%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Cash, Cash Equivalents, & Other Net Assets  
Holdings [Line Items]  
Percent of Net Asset Value 0.58%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Enbridge, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 8.27%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Energy Transfer LP  
Holdings [Line Items]  
Percent of Net Asset Value 7.83%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Enterprise Products Partners LP  
Holdings [Line Items]  
Percent of Net Asset Value 7.06%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | The Williams Cos., Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 6.33%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | DT Midstream, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.28%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Kinder Morgan, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 5.15%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Targa Resources Corp.  
Holdings [Line Items]  
Percent of Net Asset Value 5.02%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Plains GP Holdings LP  
Holdings [Line Items]  
Percent of Net Asset Value 4.91%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Cheniere Energy, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.90%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | ONEOK, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.89%
ALPS | Alerian Energy Infrastructure Portfolio | Class III | Total % of Top 10 Holdings  
Holdings [Line Items]  
Percent of Net Asset Value 59.64%
ALPS Global Opportunity Portfolio | Class I | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 50.68%
ALPS Global Opportunity Portfolio | Class I | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 14.55%
ALPS Global Opportunity Portfolio | Class I | SWEDEN  
Holdings [Line Items]  
Percent of Net Asset Value 8.18%
ALPS Global Opportunity Portfolio | Class I | LUXEMBOURG  
Holdings [Line Items]  
Percent of Net Asset Value 5.53%
ALPS Global Opportunity Portfolio | Class I | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.57%
ALPS Global Opportunity Portfolio | Class I | GUERNSEY  
Holdings [Line Items]  
Percent of Net Asset Value 3.52%
ALPS Global Opportunity Portfolio | Class I | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 2.33%
ALPS Global Opportunity Portfolio | Class I | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 2.15%
ALPS Global Opportunity Portfolio | Class I | BELGIUM  
Holdings [Line Items]  
Percent of Net Asset Value 1.98%
ALPS Global Opportunity Portfolio | Class I | BERMUDA  
Holdings [Line Items]  
Percent of Net Asset Value 1.73%
ALPS Global Opportunity Portfolio | Class I | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 1.12%
ALPS Global Opportunity Portfolio | Class I | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 0.76%
ALPS Global Opportunity Portfolio | Class I | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 0.53%
ALPS Global Opportunity Portfolio | Class I | Cash, Cash Equivalents, & Other Net Assets  
Holdings [Line Items]  
Percent of Net Asset Value 2.37%
ALPS Global Opportunity Portfolio | Class I | Total % of Top 10 Holdings  
Holdings [Line Items]  
Percent of Net Asset Value 38.58%
ALPS Global Opportunity Portfolio | Class I | 3i Group PLC  
Holdings [Line Items]  
Percent of Net Asset Value 4.39%
ALPS Global Opportunity Portfolio | Class I | Berkshire Hathaway, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.36%
ALPS Global Opportunity Portfolio | Class I | KKR & Co., Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.34%
ALPS Global Opportunity Portfolio | Class I | Brederode SA  
Holdings [Line Items]  
Percent of Net Asset Value 4.06%
ALPS Global Opportunity Portfolio | Class I | Ares Management LP  
Holdings [Line Items]  
Percent of Net Asset Value 3.93%
ALPS Global Opportunity Portfolio | Class I | Blackstone, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.91%
ALPS Global Opportunity Portfolio | Class I | HgCapital Trust PLC  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
ALPS Global Opportunity Portfolio | Class I | Apollo Global Management, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.85%
ALPS Global Opportunity Portfolio | Class I | Partners Group Holding AG  
Holdings [Line Items]  
Percent of Net Asset Value 3.33%
ALPS Global Opportunity Portfolio | Class I | Investor AB, B Shares Class B  
Holdings [Line Items]  
Percent of Net Asset Value 2.51%
ALPS Global Opportunity Portfolio | Class III | UNITED STATES  
Holdings [Line Items]  
Percent of Net Asset Value 50.68%
ALPS Global Opportunity Portfolio | Class III | UNITED KINGDOM  
Holdings [Line Items]  
Percent of Net Asset Value 14.55%
ALPS Global Opportunity Portfolio | Class III | SWEDEN  
Holdings [Line Items]  
Percent of Net Asset Value 8.18%
ALPS Global Opportunity Portfolio | Class III | LUXEMBOURG  
Holdings [Line Items]  
Percent of Net Asset Value 5.53%
ALPS Global Opportunity Portfolio | Class III | SWITZERLAND  
Holdings [Line Items]  
Percent of Net Asset Value 4.57%
ALPS Global Opportunity Portfolio | Class III | GUERNSEY  
Holdings [Line Items]  
Percent of Net Asset Value 3.52%
ALPS Global Opportunity Portfolio | Class III | GERMANY  
Holdings [Line Items]  
Percent of Net Asset Value 2.33%
ALPS Global Opportunity Portfolio | Class III | AUSTRALIA  
Holdings [Line Items]  
Percent of Net Asset Value 2.15%
ALPS Global Opportunity Portfolio | Class III | BELGIUM  
Holdings [Line Items]  
Percent of Net Asset Value 1.98%
ALPS Global Opportunity Portfolio | Class III | BERMUDA  
Holdings [Line Items]  
Percent of Net Asset Value 1.73%
ALPS Global Opportunity Portfolio | Class III | CANADA  
Holdings [Line Items]  
Percent of Net Asset Value 1.12%
ALPS Global Opportunity Portfolio | Class III | ITALY  
Holdings [Line Items]  
Percent of Net Asset Value 0.76%
ALPS Global Opportunity Portfolio | Class III | JAPAN  
Holdings [Line Items]  
Percent of Net Asset Value 0.53%
ALPS Global Opportunity Portfolio | Class III | Cash, Cash Equivalents, & Other Net Assets  
Holdings [Line Items]  
Percent of Net Asset Value 2.37%
ALPS Global Opportunity Portfolio | Class III | Total % of Top 10 Holdings  
Holdings [Line Items]  
Percent of Net Asset Value 38.58%
ALPS Global Opportunity Portfolio | Class III | 3i Group PLC  
Holdings [Line Items]  
Percent of Net Asset Value 4.39%
ALPS Global Opportunity Portfolio | Class III | Berkshire Hathaway, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.36%
ALPS Global Opportunity Portfolio | Class III | KKR & Co., Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 4.34%
ALPS Global Opportunity Portfolio | Class III | Brederode SA  
Holdings [Line Items]  
Percent of Net Asset Value 4.06%
ALPS Global Opportunity Portfolio | Class III | Ares Management LP  
Holdings [Line Items]  
Percent of Net Asset Value 3.93%
ALPS Global Opportunity Portfolio | Class III | Blackstone, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.91%
ALPS Global Opportunity Portfolio | Class III | HgCapital Trust PLC  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
ALPS Global Opportunity Portfolio | Class III | Apollo Global Management, Inc.  
Holdings [Line Items]  
Percent of Net Asset Value 3.85%
ALPS Global Opportunity Portfolio | Class III | Partners Group Holding AG  
Holdings [Line Items]  
Percent of Net Asset Value 3.33%
ALPS Global Opportunity Portfolio | Class III | Investor AB, B Shares Class B  
Holdings [Line Items]  
Percent of Net Asset Value 2.51%