| 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 Multi-Asset Variable Growth Fund | |
| 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 Multi-Asset Variable Growth Fund 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 $16 0.15% | [1] |
| Expenses Paid, Amount | $ 16 | [1] |
| Expense Ratio, Percent | 0.15% | [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 Multi-Asset Variable Growth Fund returned 17.64%. 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 14.57%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities, which had a stronger return than other asset classes. ↑ Asset allocation effects contributed to relative performance, due to an equity overweight and fixed income underweight as well as strong manager selection within U.S. Equities. ↑ ClearBridge Large Cap Growth Fund and the Franklin U.S. Large Cap Equity Fund were the leading contributors to relative performance at the manager level. Top detractors from performance: ↓ Exposure to fixed income, which underperformed equities for the year. ↓ ClearBridge Small Cap Growth Fund and the Putnam Large Cap Value Fund were the leading detractors from relative performance at the manager level. | |
| 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 5 Year 10 Year Class I 17.64 9.98 8.67 Russell 3000 Index 23.81 13.86 12.55 Bloomberg U.S. Aggregate Index 1.25 -0.33 1.35 Composite Benchmark † 14.57 9.25 8.98 | [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 | $ 70,870,989 | |
| Holdings Count | $ / shares | 13 | [3] |
| Advisory Fees Paid, Amount | $ 0 | |
| Investment Company Portfolio Turnover | 60% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $70,870,989 Total Number of Portfolio Holdings * 13 Total Management Fee Paid $0 Portfolio Turnover Rate 60% | [3] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Multi-Asset Variable Moderate Growth Fund | |
| 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 Multi-Asset Variable Moderate Growth Fund 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 $22 0.20% | [4],[5] |
| Expenses Paid, Amount | $ 22 | [4] |
| Expense Ratio, Percent | 0.20% | [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 I shares of Franklin Multi-Asset Variable Moderate Growth Fund returned 15.46%. 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 12.68%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities which had a stronger return than other asset classes was the top contributor to absolute performance. ↑ Asset allocation effects contributed to relative performance due to an equity overweight and fixed income underweight as well as strong manager selection within U.S. equities. ↑ ClearBridge Large Cap Growth Fund and Franklin U.S. Large Cap Equity Fund were the leading contributors to relative performance at the manager level. Top detractors from performance: ↓ Exposure to fixed income, which underperformed equities was the leading detractor from absolute performance. ↓ Fixed Income was a leading detractor from relative return at the manager level. ↓ ClearBridge Small Cap Growth Fund and the Putnam Large Cap Value Fund were the leading detractors from relative performance at the manager level. | |
| 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 5 Year 10 Year Class I 15.46 8.58 7.75 Russell 3000 Index 23.81 13.86 12.55 Bloomberg U.S. Aggregate Index 1.25 -0.33 1.35 Composite Benchmark † 12.68 7.92 7.94 | [6] |
| 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 | $ 28,575,226 | |
| Holdings Count | $ / shares | 13 | [7] |
| Advisory Fees Paid, Amount | $ 0 | |
| Investment Company Portfolio Turnover | 74% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $28,575,226 Total Number of Portfolio Holdings * 13 Total Management Fee Paid $0 Portfolio Turnover Rate 74% | [7] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class I | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Multi-Asset Variable Conservative Growth Fund | |
| 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 Multi-Asset Variable Conservative Growth Fund 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 $15 0.14% | [8] |
| Expenses Paid, Amount | $ 15 | [8] |
| Expense Ratio, Percent | 0.14% | [8] |
| 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 Multi-Asset Variable Conservative Growth Fund returned 11.79%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index, the Russell 1000 Index and the Composite Benchmark†, which returned 1.25%, 24.51% and 9.59%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities, which had a stronger return than other asset classes, was the top contributor to absolute performance. ↑ Asset allocation effects contributed to relative performance, due to an equity overweight and fixed income underweight as well as strong manager selection within U.S. Equities. ↑ ClearBridge Large Cap Growth Fund, Franklin U.S. Large Cap Equity Fund and ClearBridge Appreciation Fund were the leading contributors to relative performance at the manager level. Top detractors from performance: ↓ Exposure to fixed income, which underperformed equities, was the leading detractor from absolute performance. ↓ ClearBridge Small Cap Growth Fund and Franklin U.S. Core Bond ETF were the leading detractors from relative performance at the manager level. | |
| 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 5 Year 10 Year Class I 11.79 6.35 6.29 Russell 3000 Index 23.81 13.86 12.55 Bloomberg U.S. Aggregate Index 1.25 -0.33 1.35 Russell 1000 Index 24.51 14.28 12.87 Composite Benchmark † 9.59 5.79 6.26 | [9] |
| 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 | $ 75,450,466 | |
| Holdings Count | $ / shares | 13 | [10] |
| Advisory Fees Paid, Amount | $ 0 | |
| Investment Company Portfolio Turnover | 84% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $75,450,466 Total Number of Portfolio Holdings * 13 Total Management Fee Paid $0 Portfolio Turnover Rate 84% | [10] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| Class II | ||
| Shareholder Report [Line Items] | ||
| Fund Name | Franklin Multi-Asset Variable Conservative Growth Fund | |
| 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 Multi-Asset Variable Conservative Growth Fund 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 $41 0.39% | [11] |
| Expenses Paid, Amount | $ 41 | [11] |
| Expense Ratio, Percent | 0.39% | [11] |
| 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 Multi-Asset Variable Conservative Growth Fund returned 11.58%. The Fund compares its performance to the Bloomberg U.S. Aggregate Index, the Russell 1000 Index and the Composite Benchmark†, which returned 1.25%, 24.51% and 9.59%, respectively, for the same period. PERFORMANCE HIGHLIGHTS Top contributors to performance: ↑ Exposure to U.S. equities, which had a stronger return than other asset classes, was the top contributor to absolute performance. ↑ Asset allocation effects contributed to relative performance, due to an equity overweight and fixed income underweight as well as strong manager selection within U.S. Equities. ↑ ClearBridge Large Cap Growth Fund, Franklin U.S. Large Cap Equity Fund and ClearBridge Appreciation Fund were the leading contributors to relative performance at the manager level. Top detractors from performance: ↓ Exposure to fixed income, which underperformed equities, was the leading detractor from absolute performance. ↓ ClearBridge Small Cap Growth Fund and Franklin U.S. Core Bond ETF were the leading detractors from relative performance at the manager level. | |
| 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 5 Year Since Inception (6/23/2017) Class II 11.58 6.10 6.39 Russell 3000 Index 23.81 13.86 13.70 Bloomberg U.S. Aggregate Index 1.25 -0.33 0.99 Russell 1000 Index 24.51 14.28 14.11 Composite Benchmark † 9.59 5.79 6.40 | [12] |
| 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 | $ 75,450,466 | |
| Holdings Count | $ / shares | 13 | [13] |
| Advisory Fees Paid, Amount | $ 0 | |
| Investment Company Portfolio Turnover | 84% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS (as of December 31, 2024) Total Net Assets $75,450,466 Total Number of Portfolio Holdings * 13 Total Management Fee Paid $0 Portfolio Turnover Rate 84% | [13] |
| Holdings [Text Block] | ||
| Updated Prospectus Web Address | https://www.franklintempleton.com/regulatory-fund-documents | |
| [1] 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 45% Russell 1000 Index, 20% Russell 2000 Index, 20% MSCI EAFE Index, 10% Bloomberg U.S. Aggregate Index and 5% Bloomberg U.S. High Yield—2% Issuer Cap Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. * Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher. † The Fund’s Composite Benchmark is comprised of 40% Russell 1000 Index, 15% Russell 2000 Index, 15% MSCI EAFE Index, 25% Bloomberg U.S. Aggregate Index and 5% Bloomberg U.S. High Yield—2% Issuer Cap Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 28% Russell 1000 Index, 12% Russell 2000 Index, 10% MSCI EAFE Index, 43% Bloomberg U.S. Aggregate Index and 7% Bloomberg U.S. High Yield—2% Issuer Cap Index. * Does not include derivatives, except purchased options, if any. 1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products. † The Fund’s Composite Benchmark is comprised of 28% Russell 1000 Index, 12% Russell 2000 Index, 10% MSCI EAFE Index, 43% Bloomberg U.S. Aggregate Index and 7% Bloomberg U.S. High Yield—2% Issuer Cap Index. * Does not include derivatives, except purchased options, if any. | ||
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | |||||||||||
| Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jun. 23, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | |
| Class I | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||
| Account Value | $ 22,960 | $ 19,517 | $ 16,322 | $ 19,156 | $ 15,871 | $ 14,268 | $ 11,640 | $ 12,658 | $ 10,607 | $ 9,777 | $ 10,000 | |
| Class I | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||
| Account Value | $ 21,092 | 18,269 | 15,507 | 18,107 | 15,521 | 13,974 | 11,603 | 12,380 | 10,606 | 9,821 | 10,000 | |
| Class I | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class I | |||||||||||
| Account Value | $ 18,398 | 16,458 | 14,358 | 16,729 | 15,008 | 13,525 | 11,524 | 12,054 | 10,616 | 9,881 | 10,000 | |
| Class II | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Class II | |||||||||||
| Account Value | $ 15,935 | 14,282 | 12,498 | 14,588 | 13,128 | 11,852 | 10,135 | 10,618 | $ 10,000 | |||
| Russell 3000 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||||||||
| Account Value | $ 32,604 | 26,334 | 20,907 | 25,877 | 20,593 | 17,035 | 13,002 | 13,721 | 11,327 | 10,048 | 10,000 | |
| Russell 3000 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||||||||
| Account Value | $ 32,604 | 26,334 | 20,907 | 25,877 | 20,593 | 17,035 | 13,002 | 13,721 | 11,327 | 10,048 | 10,000 | |
| Russell 3000 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||||||||
| Account Value | $ 32,604 | 26,334 | 20,907 | 25,877 | 20,593 | 17,035 | 13,002 | 13,721 | 11,327 | 10,048 | 10,000 | |
| Russell 3000 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 3000 Index | |||||||||||
| Account Value | $ 26,291 | 21,234 | 16,859 | 20,866 | 16,605 | 13,735 | 10,483 | 11,065 | 10,000 | |||
| Composite Benchmark [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||||||||
| Account Value | $ 23,638 | 20,632 | 17,154 | 20,729 | 17,708 | 15,189 | 12,128 | 13,053 | 11,031 | 9,936 | 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 | $ 11,432 | 11,291 | 10,699 | 12,299 | 12,492 | 11,620 | 10,688 | 10,687 | 10,321 | 10,055 | 10,000 | |
| Composite Benchmark [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||||||||
| Account Value | $ 21,460 | 19,045 | 16,150 | 19,323 | 16,942 | 14,660 | 11,961 | 12,662 | 10,945 | 9,972 | 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 | $ 11,432 | 11,291 | 10,699 | 12,299 | 12,492 | 11,620 | 10,688 | 10,687 | 10,321 | 10,055 | 10,000 | |
| Composite Benchmark [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||||||||
| Account Value | $ 18,354 | 16,749 | 14,622 | 17,267 | 15,749 | 13,850 | 11,661 | 12,140 | 10,827 | 9,982 | 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 | $ 11,432 | 11,291 | 10,699 | 12,299 | 12,492 | 11,620 | 10,688 | 10,687 | 10,321 | 10,055 | 10,000 | |
| Russell 1000 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 1000 Index | |||||||||||
| Account Value | $ 33,560 | 26,953 | 21,302 | 26,340 | 20,830 | 17,220 | 13,102 | 13,761 | $ 11,308 | $ 10,092 | $ 10,000 | |
| Composite Benchmark [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Composite Benchmark | |||||||||||
| Account Value | $ 15,952 | 14,556 | 12,707 | 15,008 | 13,688 | 12,037 | 10,133 | 10,549 | 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 | $ 10,769 | 10,635 | 10,078 | 11,586 | 11,768 | 10,947 | 10,068 | 10,066 | 10,000 | |||
| Russell 1000 Index [Member] | ||||||||||||
| Account Value [Line Items] | ||||||||||||
| Line Graph and Table Measure Name | Russell 1000 Index | |||||||||||
| Account Value | $ 27,016 | $ 21,698 | $ 17,150 | $ 21,205 | $ 16,768 | $ 13,859 | $ 10,544 | $ 11,074 | $ 10,000 |
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 90 Months Ended | 120 Months Ended | |
| Dec. 31, 2024 | Dec. 31, 2024 | 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 | 17.64% | 9.98% | 8.67% | ||
| Class I | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Class I | ||||
| Average Annual Return, Percent | 15.46% | 8.58% | 7.75% | ||
| Class I | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Class I | ||||
| Average Annual Return, Percent | 11.79% | 6.35% | 6.29% | ||
| Class II | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Class II | ||||
| Average Annual Return, Percent | 11.58% | 6.10% | 6.39% | ||
| Russell 3000 Index [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Russell 3000 Index | ||||
| Average Annual Return, Percent | 23.81% | 13.86% | 12.55% | ||
| Russell 3000 Index [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Russell 3000 Index | ||||
| Average Annual Return, Percent | 23.81% | 13.86% | 12.55% | ||
| Russell 3000 Index [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Russell 3000 Index | ||||
| Average Annual Return, Percent | 23.81% | 13.86% | 12.55% | ||
| Russell 3000 Index [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Russell 3000 Index | ||||
| Average Annual Return, Percent | 23.81% | 13.86% | 13.70% | ||
| Composite Benchmark [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Composite Benchmark | ||||
| Average Annual Return, Percent | [1] | 14.57% | 9.25% | 8.98% | |
| 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% | (0.33%) | 1.35% | ||
| Composite Benchmark [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Composite Benchmark | ||||
| Average Annual Return, Percent | [2] | 12.68% | 7.92% | 7.94% | |
| 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% | (0.33%) | 1.35% | ||
| Composite Benchmark [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Composite Benchmark | ||||
| Average Annual Return, Percent | [3] | 9.59% | 5.79% | 6.26% | |
| 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% | (0.33%) | 1.35% | ||
| Russell 1000 Index [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Russell 1000 Index | ||||
| Average Annual Return, Percent | 24.51% | 14.28% | 12.87% | ||
| Composite Benchmark [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Composite Benchmark | ||||
| Average Annual Return, Percent | [4] | 9.59% | 5.79% | 6.40% | |
| 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% | (0.33%) | 0.99% | ||
| Russell 1000 Index [Member] | |||||
| Average Annual Return [Line Items] | |||||
| Line Graph and Table Measure Name | Russell 1000 Index | ||||
| Average Annual Return, Percent | 24.51% | 14.28% | 14.11% | ||
| [1] † The Fund’s Composite Benchmark is comprised of 45% Russell 1000 Index, 20% Russell 2000 Index, 20% MSCI EAFE Index, 10% Bloomberg U.S. Aggregate Index and 5% Bloomberg U.S. High Yield—2% Issuer Cap Index. † The Fund’s Composite Benchmark is comprised of 40% Russell 1000 Index, 15% Russell 2000 Index, 15% MSCI EAFE Index, 25% Bloomberg U.S. Aggregate Index and 5% Bloomberg U.S. High Yield—2% Issuer Cap Index. † The Fund’s Composite Benchmark is comprised of 28% Russell 1000 Index, 12% Russell 2000 Index, 10% MSCI EAFE Index, 43% Bloomberg U.S. Aggregate Index and 7% Bloomberg U.S. High Yield—2% Issuer Cap Index. † The Fund’s Composite Benchmark is comprised of 28% Russell 1000 Index, 12% Russell 2000 Index, 10% MSCI EAFE Index, 43% Bloomberg U.S. Aggregate Index and 7% Bloomberg U.S. High Yield—2% Issuer Cap Index. | |||||
| Label | Element | Value |
| Class I | Domestic Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 77.60% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 15.30% |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 6.80% |
| Class I | 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 | 65.40% |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 21.40% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 12.90% |
| Class I | 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 | 48.80% |
| Class I | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 41.20% |
| Class I | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 9.70% |
| 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 | 48.80% |
| Class II | Domestic Fixed Income [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 41.20% |
| Class II | Foreign Equity [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 9.70% |
| Class II | Short-Term Investments [Member] | ||
| Holdings [Line Items] | oef_HoldingsLineItems | |
| Percent of Total Investments | oef_PctOfTotalInv | 0.30% |
