Morningstar Conservative ETF Asset Allocation Portfolio | Class I Morningstar Conservative ETF Asset Allocation Portfolio | Class I | Bloomberg US Aggregate Bond Index Morningstar Conservative ETF Asset Allocation Portfolio | Class I | Conservative Blended Benchmark-1 (20% Equity) Morningstar Conservative ETF Asset Allocation Portfolio | Class I | Blended Secondary Benchmark U.S. Equity U.S. Bonds Non-U.S. Equity Non-U.S. Bonds Cash Equivalents [Member] Morningstar Conservative ETF Asset Allocation Portfolio | Class II Morningstar Conservative ETF Asset Allocation Portfolio | Class II | Bloomberg US Aggregate Bond Index Morningstar Conservative ETF Asset Allocation Portfolio | Class II | Conservative Blended Benchmark-1 (20% Equity) Morningstar Conservative ETF Asset Allocation Portfolio | Class II | Blended Secondary Benchmark Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | Bloomberg US 1000 Index Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | Bloomberg US Aggregate Bond Index Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | Income & Growth Blended Benchmark-1 (40% Equity) Morningstar Income and Growth ETF Asset Allocation Portfolio | Class I | Blended Secondary Benchmark Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | Bloomberg US 1000 Index Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | Bloomberg US Aggregate Bond Index Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | Income & Growth Blended Benchmark-1 (40% Equity) Morningstar Income and Growth ETF Asset Allocation Portfolio | Class II | Blended Secondary Benchmark Morningstar Balanced ETF Asset Allocation Portfolio | Class I Morningstar Balanced ETF Asset Allocation Portfolio | Class I | Bloomberg US 1000 Index Morningstar Balanced ETF Asset Allocation Portfolio | Class I | Bloomberg US Aggregate Bond Index Morningstar Balanced ETF Asset Allocation Portfolio | Class I | Balanced Blended Benchmark-1 (60% Equity) Morningstar Balanced ETF Asset Allocation Portfolio | Class I | Blended Secondary Benchmark Morningstar Balanced ETF Asset Allocation Portfolio | Class II Morningstar Balanced ETF Asset Allocation Portfolio | Class II | Bloomberg US 1000 Index Morningstar Balanced ETF Asset Allocation Portfolio | Class II | Bloomberg US Aggregate Bond Index Morningstar Balanced ETF Asset Allocation Portfolio | Class II | Balanced Blended Benchmark-1 (60% Equity) Morningstar Balanced ETF Asset Allocation Portfolio | Class II | Blended Secondary Benchmark Morningstar Growth ETF Asset Allocation Portfolio | Class I Morningstar Growth ETF Asset Allocation Portfolio | Class I | Bloomberg US 1000 Index Morningstar Growth ETF Asset Allocation Portfolio | Class I | Growth Blended Benchmark-1 (80% Equity) Morningstar Growth ETF Asset Allocation Portfolio | Class I | Blended Secondary Benchmark Morningstar Growth ETF Asset Allocation Portfolio | Class II Morningstar Growth ETF Asset Allocation Portfolio | Class II | Bloomberg US 1000 Index Morningstar Growth ETF Asset Allocation Portfolio | Class II | Growth Blended Benchmark-1 (80% Equity) Morningstar Growth ETF Asset Allocation Portfolio | Class II | Blended Secondary Benchmark Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I | Bloomberg US 1000 Index Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I | Aggressive Growth Blended Benchmark-1 (95% Equity) Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class I | Blended Secondary Benchmark Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II | Bloomberg US 1000 Index Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II | Aggressive Growth Blended Benchmark-1 (95% Equity) Morningstar Aggressive Growth ETF Asset Allocation Portfolio | Class II | Blended Secondary Benchmark ALPS | Alerian Energy Infrastructure Portfolio | Class I ALPS | Alerian Energy Infrastructure Portfolio | Class I | Bloomberg US 1000 Index ALPS | Alerian Energy Infrastructure Portfolio | Class I | Alerian Midstream Energy Select Index U.S. Energy Infrastructure Companies Canadian Energy Infrastructure Companies U.S. Energy Infrastructure MLPs U.S. General Partners Cash, Cash Equivalents, & Other Net Assets Investment Type [Axis] Enbridge, Inc. Energy Transfer LP Enterprise Products Partners LP The Williams Cos., Inc. DT Midstream, Inc. Kinder Morgan, Inc. Targa Resources Corp. Plains GP Holdings LP Cheniere Energy, Inc. ONEOK, Inc. Total % of Top 10 Holdings ALPS | Alerian Energy Infrastructure Portfolio | Class III ALPS | Alerian Energy Infrastructure Portfolio | Class III | Bloomberg US 1000 Index ALPS | Alerian Energy Infrastructure Portfolio | Class III | Alerian Midstream Energy Select Index ALPS Global Opportunity Portfolio | Class I ALPS Global Opportunity Portfolio | Class I | Morningstar Developed Markets Index ALPS Global Opportunity Portfolio | Class I | Red Rocks Global Listed Private Equity Index ALPS Global Opportunity Portfolio | Class I | Morningstar Global Markets Mid Cap Index UNITED STATES UNITED KINGDOM SWEDEN LUXEMBOURG SWITZERLAND GUERNSEY GERMANY AUSTRALIA BELGIUM BERMUDA CANADA ITALY JAPAN 3i Group PLC Berkshire Hathaway, Inc. KKR & Co., Inc. Brederode SA Ares Management LP Blackstone, Inc. HgCapital Trust PLC Apollo Global Management, Inc. Partners Group Holding AG Investor AB, B Shares Class B ALPS Global Opportunity Portfolio | Class III ALPS Global Opportunity Portfolio | Class III | Morningstar Developed Markets Index ALPS Global Opportunity Portfolio | Class III | Red Rocks Global Listed Private Equity Index ALPS Global Opportunity Portfolio | Class III | Morningstar Global Markets Mid Cap Index Net Assets Investment Company, Portfolio Turnover No Trading Symbol Flag