| Form N-CSR Cover | 12 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Legg Mason Partners Variable Equity Trust |
| Entity Central Index Key | 0001176343 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 12 Months Ended | |
| Dec. 31, 2024 USD ($) $ / shares | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSR | |
| Amendment Flag | false | |
| Registrant Name | Legg Mason Partners Variable Equity Trust | |
| Entity Central Index Key | 0001176343 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Dec. 31, 2024 | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Aggressive Model Portfolio | |
| Class Name | Class I | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Aggressive Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I 1 $12 0.11% | [1] |
| Expenses Paid, Amount | $ 12 | [1] |
| Expense Ratio, Percent | 0.11% | [1] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class I shares of Franklin Templeton Aggressive Model Portfolio Fund returned 18.29%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 18.45%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and fixed income contributed to relative performance. ↑ Underlying manager selection results were positive in U.S. fixed income. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor as they underperformed developed market equities. ↓ Underlying manager selection results detracted in U.S. small cap and international equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class I 18.29 13.88 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 18.45 15.57 | [2] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 864,142,165 | |
| Holdings Count | $ / shares | 21 | [3] |
| Advisory Fees Paid, Amount | $ 664,647 | |
| Investment Company Portfolio Turnover | 18% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $864,142,165 Total Number of Portfolio Holdings * 21 Total Management Fee Paid $664,647 Portfolio Turnover Rate 18% | [3] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class II | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Aggressive Model Portfolio | |
| Class Name | Class II | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Aggressive Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II 1 $39 0.36% | [4] |
| Expenses Paid, Amount | $ 39 | [4] |
| Expense Ratio, Percent | 0.36% | [4] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class II shares of Franklin Templeton Aggressive Model Portfolio Fund returned 18.02%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 18.45%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and fixed income contributed to relative performance. ↑ Underlying manager selection results were positive in U.S. fixed income. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor as they underperformed developed market equities. ↓ Underlying manager selection results detracted in U.S. small cap and international equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class II 18.02 13.60 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 18.45 15.57 | [5] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 864,142,165 | |
| Holdings Count | $ / shares | 21 | [6] |
| Advisory Fees Paid, Amount | $ 664,647 | |
| Investment Company Portfolio Turnover | 18% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $864,142,165 Total Number of Portfolio Holdings * 21 Total Management Fee Paid $664,647 Portfolio Turnover Rate 18% | [6] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Moderately Aggressive Model Portfolio | |
| Class Name | Class I | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Moderately Aggressive Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I 1 $12 0.11% | [7] |
| Expenses Paid, Amount | $ 12 | [7] |
| Expense Ratio, Percent | 0.11% | [7] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class I shares of Franklin Templeton Moderately Aggressive Model Portfolio Fund returned 14.49%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 14.77%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and an allocation in emerging markets fixed income contributed to relative performance. ↑ Underlying manager selection results were positive in U.S. fixed income where high yield was notably positive. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor as they underperformed developed market equities. ↓ Underlying manager selection results detracted in U.S. small cap and international equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class I 14.49 10.70 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 14.77 11.85 | [8] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 2,183,826,994 | |
| Holdings Count | $ / shares | 28 | [9] |
| Advisory Fees Paid, Amount | $ 1,805,123 | |
| Investment Company Portfolio Turnover | 22% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $2,183,826,994 Total Number of Portfolio Holdings * 28 Total Management Fee Paid $1,805,123 Portfolio Turnover Rate 22% | [9] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class II | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Moderately Aggressive Model Portfolio | |
| Class Name | Class II | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Moderately Aggressive Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II 1 $39 0.36% | [10] |
| Expenses Paid, Amount | $ 39 | [10] |
| Expense Ratio, Percent | 0.36% | [10] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class II shares of Franklin Templeton Moderately Aggressive Model Portfolio Fund returned 14.28%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 14.77%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and an allocation in emerging markets fixed income contributed to relative performance. ↑ Underlying manager selection results were positive in U.S. fixed income where high yield was notably positive. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor as they underperformed developed market equities. ↓ Underlying manager selection results detracted in U.S. small cap and international equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class II 14.28 10.44 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 14.77 11.85 | [11] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 2,183,826,994 | |
| Holdings Count | $ / shares | 28 | [12] |
| Advisory Fees Paid, Amount | $ 1,805,123 | |
| Investment Company Portfolio Turnover | 22% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $2,183,826,994 Total Number of Portfolio Holdings * 28 Total Management Fee Paid $1,805,123 Portfolio Turnover Rate 22% | [12] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Moderate Model Portfolio | |
| Class Name | Class I | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Moderate Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I 1 $12 0.11% | [13] |
| Expenses Paid, Amount | $ 12 | [13] |
| Expense Ratio, Percent | 0.11% | [13] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class I shares of Franklin Templeton Moderate Model Portfolio Fund returned 12.27%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 11.37%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and U.S. fixed income contributed to relative performance. ↑ Underlying manager selection results were positive overall, especially in U.S. fixed income where high yield was notably positive. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor as they underperformed developed market equities. ↓ Underlying manager selection results detracted primarily in international and U.S. small cap equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class I 12.27 8.44 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 11.37 8.81 | [14] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 1,585,985,510 | |
| Holdings Count | $ / shares | 29 | [15] |
| Advisory Fees Paid, Amount | $ 1,357,554 | |
| Investment Company Portfolio Turnover | 32% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $1,585,985,510 Total Number of Portfolio Holdings * 29 Total Management Fee Paid $1,357,554 Portfolio Turnover Rate 32% | [15] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class II | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Moderate Model Portfolio | |
| Class Name | Class II | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Moderate Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II 1 $38 0.36% | [16] |
| Expenses Paid, Amount | $ 38 | [16] |
| Expense Ratio, Percent | 0.36% | [16] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class II shares of Franklin Templeton Moderate Model Portfolio Fund returned 11.95%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 11.37%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and U.S. fixed income contributed to relative performance. ↑ Underlying manager selection results were positive overall, especially in U.S. fixed income where high yield was notably positive. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor as they underperformed developed market equities. ↓ Underlying manager selection results detracted primarily in international and U.S. small cap equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class II 11.95 8.16 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 11.37 8.81 | [17] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 1,585,985,510 | |
| Holdings Count | $ / shares | 29 | [18] |
| Advisory Fees Paid, Amount | $ 1,357,554 | |
| Investment Company Portfolio Turnover | 32% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $1,585,985,510 Total Number of Portfolio Holdings * 29 Total Management Fee Paid $1,357,554 Portfolio Turnover Rate 32% | [18] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Moderately Conservative Model Portfolio | |
| Class Name | Class I | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Moderately Conservative Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I 1 $14 0.13% | [19] |
| Expenses Paid, Amount | $ 14 | [19] |
| Expense Ratio, Percent | 0.13% | [19] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class I shares of Franklin Templeton Moderately Conservative Model Portfolio Fund returned 9.69%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 8.95%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and an allocation in emerging markets fixed income contributed to relative performance. ↑ Underlying manager selection results were positive in U.S. fixed income, where high yield was notably positive. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor to relative performance as they underperformed developed market equities. ↓ Underlying manager selection results detracted primarily in international and U.S. small cap equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class I 9.69 6.41 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 8.95 6.17 | [20] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 440,038,534 | |
| Holdings Count | $ / shares | 25 | [21] |
| Advisory Fees Paid, Amount | $ 400,963 | |
| Investment Company Portfolio Turnover | 46% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $440,038,534 Total Number of Portfolio Holdings * 25 Total Management Fee Paid $400,963 Portfolio Turnover Rate 46% | [21] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class II | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Moderately Conservative Model Portfolio | |
| Class Name | Class II | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Moderately Conservative Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II 1 $40 0.38% | [22] |
| Expenses Paid, Amount | $ 40 | [22] |
| Expense Ratio, Percent | 0.38% | [22] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class II shares of Franklin Templeton Moderately Conservative Model Portfolio Fund returned 9.33%. The Fund compares its performance to the Russell 3000 Index, the Bloomberg U.S. Aggregate Index and the Composite Benchmark†, which returned 23.81%, 1.25% and 8.95%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to international equities and an allocation in emerging markets fixed income contributed to relative performance. ↑ Underlying manager selection results were positive in U.S. fixed income, where high yield was notably positive. Top detractors from performance: ↓ Allocation to emerging market equities was a detractor to relative performance as they underperformed developed market equities. ↓ Underlying manager selection results detracted primarily in international and U.S. small cap equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class II 9.33 6.16 Russell 3000 Index 23.81 18.78 Bloomberg U.S. Aggregate Index 1.25 -1.33 Composite Benchmark † 8.95 6.17 | [23] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 440,038,534 | |
| Holdings Count | $ / shares | 25 | [24] |
| Advisory Fees Paid, Amount | $ 400,963 | |
| Investment Company Portfolio Turnover | 46% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $440,038,534 Total Number of Portfolio Holdings * 25 Total Management Fee Paid $400,963 Portfolio Turnover Rate 46% | [24] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Conservative Model Portfolio | |
| Class Name | Class I | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Conservative Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class I 1 $17 0.16% | [25] |
| Expenses Paid, Amount | $ 17 | [25] |
| Expense Ratio, Percent | 0.16% | [25] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class I shares of Franklin Templeton Conservative Model Portfolio Fund returned 6.39%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index, the Russell 3000 Index and the Composite Benchmark†, which returned 1.25%, 23.51% and 5.50%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to and allocation within fixed income contributed to relative performance. ↑ Underlying manager selection results were positive overall, especially within U.S. fixed income led by high yield. Top detractors from performance: ↓ Allocation to international equities was a detractor to relative performance as they underperformed U.S. equities. ↓ Underlying manager selection results detracted in U.S. small cap equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class I 6.39 3.41 Bloomberg U.S. Aggregate Index 1.25 -1.33 Russell 3000 Index 23.81 18.78 Composite Benchmark † 5.50 2.57 | [26] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 174,959,132 | |
| Holdings Count | $ / shares | 20 | [27] |
| Advisory Fees Paid, Amount | $ 152,958 | |
| Investment Company Portfolio Turnover | 51% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $174,959,132 Total Number of Portfolio Holdings * 20 Total Management Fee Paid $152,958 Portfolio Turnover Rate 51% | [27] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class II | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Templeton Conservative Model Portfolio | |
| Class Name | Class II | |
| No Trading Symbol Flag | true | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Franklin Templeton Conservative Model Portfolio for the period January 1, 2024, to December 31, 2024. | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | |
| Additional Information [Text Block] | You can find additional information about the Fund at https://www.franklintempleton.com/regulatory-fund-documents . You can also request this information by contacting us at 877-6LM-FUND/656-3863 . | |
| Additional Information Phone Number | 877-6LM-FUND/656-3863 | |
| Additional Information Website | https://www.franklintempleton.com/regulatory-fund-documents | |
| Expenses [Text Block] | WHAT WERE THE FUND COSTS FOR THE LAST YEAR? (based on a hypothetical $10,000 investment) Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Class II 1 $42 0.41% | [28] |
| Expenses Paid, Amount | $ 42 | [28] |
| Expense Ratio, Percent | 0.41% | [28] |
| Factors Affecting Performance [Text Block] | HOW DID THE FUND PERFORM LAST YEAR AND WHAT AFFECTED ITS PERFORMANCE? For the twelve months ended December 31, 2024, Class II shares of Franklin Templeton Conservative Model Portfolio Fund returned 6.15%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index, the Russell 3000 Index and the Composite Benchmark†, which returned 1.25%, 23.51% and 5.50%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities was the top contributor to absolute performance which had a stronger return than other asset classes. ↑ Underweight to and allocation within fixed income contributed to relative performance. ↑ Underlying manager selection results were positive overall, especially within U.S. fixed income led by high yield. Top detractors from performance: ↓ Allocation to international equities was a detractor to relative performance as they underperformed U.S. equities. ↓ Underlying manager selection results detracted in U.S. small cap equities. | |
| Performance Past Does Not Indicate Future [Text] | The Fund’s past performance is not necessarily an indication of how the Fund will perform in the future. | |
| Line Graph [Table Text Block] | ||
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS (%) Period Ended December 31, 2024 1 Year Since Inception (4/15/2020) Class II 6.15 3.16 Bloomberg U.S. Aggregate Index 1.25 -1.33 Russell 3000 Index 23.81 18.78 Composite Benchmark † 5.50 2.57 | [29] |
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares. | |
| Updated Performance Information Location [Text Block] | Important data provider notices and terms available at www.franklintempletondatasources.com. | |
| Net Assets | $ 174,959,132 | |
| Holdings Count | $ / shares | 20 | [30] |
| Advisory Fees Paid, Amount | $ 152,958 | |
| Investment Company Portfolio Turnover | 51% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $174,959,132 Total Number of Portfolio Holdings * 20 Total Management Fee Paid $152,958 Portfolio Turnover Rate 51% | [30] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| [1] 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 75% Russell 3000 Index, 15% MSCI World Ex U.S.A. Index and 10% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 75% Russell 3000 Index, 15% MSCI World Ex U.S.A. Index and 10% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 60% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 30% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 60% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 30% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 45% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 45% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 45% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 45% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 35% Russell 3000 Index, 5% MSCI World Ex U.S.A. Index and 60% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 35% Russell 3000 Index, 5% MSCI World Ex U.S.A. Index and 60% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 20% Russell 3000 Index and 80% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 20% Russell 3000 Index and 80% Bloomberg U.S. Aggregate Index. * Does not include derivatives, except purchased options, if any. | ||
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | |||||
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Apr. 15, 2020 | |
| Class I | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class I | |||||
| Account Value | $ 18,451 | $ 15,598 | $ 13,170 | $ 15,795 | $ 13,190 | $ 10,000 |
| Class II | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class II | |||||
| Account Value | $ 18,241 | 15,456 | 13,092 | 15,739 | 13,169 | 10,000 |
| Class I | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class I | |||||
| Account Value | $ 16,146 | 14,103 | 12,164 | 14,462 | 12,599 | 10,000 |
| Class II | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class II | |||||
| Account Value | $ 15,964 | 13,969 | 12,091 | 14,399 | 12,569 | 10,000 |
| Class I | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class I | |||||
| Account Value | $ 14,647 | 13,046 | 11,506 | 13,499 | 11,995 | 10,000 |
| Class II | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class II | |||||
| Account Value | $ 14,475 | 12,929 | 11,423 | 13,437 | 11,965 | 10,000 |
| Class I | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class I | |||||
| Account Value | $ 13,403 | 12,220 | 11,052 | 12,716 | 11,643 | 10,000 |
| Class II | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class II | |||||
| Account Value | $ 13,254 | 12,123 | 10,989 | 12,674 | 11,632 | 10,000 |
| Class I | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class I | |||||
| Account Value | $ 11,714 | 11,010 | 10,142 | 11,652 | 11,099 | 10,000 |
| Class II | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Class II | |||||
| Account Value | $ 11,578 | 10,907 | 10,070 | 11,600 | 11,078 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 20,990 | 17,721 | 14,452 | 17,566 | 14,547 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 20,990 | 17,721 | 14,452 | 17,566 | 14,547 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 17,842 | 15,546 | 13,085 | 15,691 | 13,560 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 17,842 | 15,546 | 13,085 | 15,691 | 13,560 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 15,541 | 13,955 | 12,059 | 14,295 | 12,811 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 15,541 | 13,955 | 12,059 | 14,295 | 12,811 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 13,759 | 12,629 | 11,171 | 13,137 | 12,147 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 13,759 | 12,629 | 11,171 | 13,137 | 12,147 | 10,000 |
| Bloomberg U.S. Aggregate Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | |||||
| Account Value | $ 9,538 | 9,420 | 8,927 | 10,262 | 10,423 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 11,588 | 10,984 | 10,038 | 11,681 | 11,285 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | 19,543 | 15,516 | 19,205 | 15,283 | 10,000 |
| Composite Benchmark [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||
| Account Value | $ 11,588 | 10,984 | 10,038 | 11,681 | 11,285 | 10,000 |
| Russell 3000 Index [Member] | ||||||
| Account Value [Line Items] | ||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||
| Account Value | $ 24,196 | $ 19,543 | $ 15,516 | $ 19,205 | $ 15,283 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 57 Months Ended | |
| Dec. 31, 2024 | Dec. 31, 2024 | ||
| Class I | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| Average Annual Return, Percent | 18.29% | 13.88% | |
| Class II | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class II | ||
| Average Annual Return, Percent | 18.02% | 13.60% | |
| Class I | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| Average Annual Return, Percent | 14.49% | 10.70% | |
| Class II | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class II | ||
| Average Annual Return, Percent | 14.28% | 10.44% | |
| Class I | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| Average Annual Return, Percent | 12.27% | 8.44% | |
| Class II | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class II | ||
| Average Annual Return, Percent | 11.95% | 8.16% | |
| Class I | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| Average Annual Return, Percent | 9.69% | 6.41% | |
| Class II | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class II | ||
| Average Annual Return, Percent | 9.33% | 6.16% | |
| Class I | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class I | ||
| Average Annual Return, Percent | 6.39% | 3.41% | |
| Class II | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Class II | ||
| Average Annual Return, Percent | 6.15% | 3.16% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [1] | 18.45% | 15.57% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [2] | 18.45% | 15.57% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [3] | 14.77% | 11.85% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [4] | 14.77% | 11.85% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [5] | 11.37% | 8.81% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [6] | 11.37% | 8.81% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [7] | 8.95% | 6.17% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [8] | 8.95% | 6.17% |
| Bloomberg U.S. Aggregate Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Index | ||
| Average Annual Return, Percent | 1.25% | (1.33%) | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [9] | 5.50% | 2.57% |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| Composite Benchmark [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Composite Benchmark | ||
| Average Annual Return, Percent | [10] | 5.50% | 2.57% |
| Russell 3000 Index [Member] | |||
| Average Annual Return [Line Items] | |||
| Line Graph and Table Measure Name | Russell 3000 Index | ||
| Average Annual Return, Percent | 23.81% | 18.78% | |
| [1] † The Fund’s Composite Benchmark is comprised of 75% Russell 3000 Index, 15% MSCI World Ex U.S.A. Index and 10% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 75% Russell 3000 Index, 15% MSCI World Ex U.S.A. Index and 10% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 60% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 30% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 60% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 30% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 45% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 45% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 45% Russell 3000 Index, 10% MSCI World Ex U.S.A. Index and 45% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 35% Russell 3000 Index, 5% MSCI World Ex U.S.A. Index and 60% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 35% Russell 3000 Index, 5% MSCI World Ex U.S.A. Index and 60% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 20% Russell 3000 Index and 80% Bloomberg U.S. Aggregate Index. † The Fund’s Composite Benchmark is comprised of 20% Russell 3000 Index and 80% Bloomberg U.S. Aggregate Index. | |||
| Label | Element | Value |
| Class I | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 78% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 14.30% |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 7.10% |
| Class I | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.60% |
| Label | Element | Value |
| Class II | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 78% |
| Class II | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 14.30% |
| Class II | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 7.10% |
| Class II | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.60% |
| Label | Element | Value |
| Class I | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 58.80% |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 29.50% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 10.40% |
| Class I | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1% |
| Class I | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.30% |
| Label | Element | Value |
| Class II | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 58.80% |
| Class II | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 29.50% |
| Class II | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 10.40% |
| Class II | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1% |
| Class II | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.30% |
| Label | Element | Value |
| Class I | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 49.10% |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 39% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 8.60% |
| Class I | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 3% |
| Class I | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.30% |
| Label | Element | Value |
| Class II | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 49.10% |
| Class II | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 39% |
| Class II | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 8.60% |
| Class II | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 3% |
| Class II | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.30% |
| Label | Element | Value |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 50.50% |
| Class I | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 37.20% |
| Class I | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 6.50% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 5.50% |
| Class I | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.30% |
| Label | Element | Value |
| Class II | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 50.50% |
| Class II | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 37.20% |
| Class II | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 6.50% |
| Class II | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 5.50% |
| Class II | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.30% |
| Label | Element | Value |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 64.70% |
| Class I | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 21.90% |
| Class I | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 11.90% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1% |
| Class I | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.50% |
| Label | Element | Value |
| Class II | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 64.70% |
| Class II | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 21.90% |
| Class II | Foreign Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 11.90% |
| Class II | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 1% |
| Class II | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.50% |
