v3.25.2
Shareholder Report
 6 Months Ended
Jun. 30, 2025
USD ($)
$ / shares
Shareholder Report [Line Items]  
Document Type N-CSRS
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 Jun. 30, 2025
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 semi-annual shareholder report contains important information about Franklin Multi-Asset Variable Growth Fund for the period January 1, 2025, to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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 I1,2
$8
0.15%
[1],[2],[3]
Expenses Paid, Amount $ 8 [1],[2]
Expense Ratio, Percent 0.15% [1],[2]
Net Assets $ 70,196,753
Holdings Count | $ / shares 12 [4]
Investment Company Portfolio Turnover 15.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Total Net Assets
$70,196,753
Total Number of Portfolio Holdings*
12
Portfolio Turnover Rate
15%
[4]
Holdings [Text Block]
image
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 semi-annual shareholder report contains important information about Franklin Multi-Asset Variable Moderate Growth Fund for the period January 1, 2025, to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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 I1,2
$10
0.20%
[5],[6],[7],[8]
Expenses Paid, Amount $ 10 [5],[6]
Expense Ratio, Percent 0.20% [5],[6]
Net Assets $ 28,720,070
Holdings Count | $ / shares 12 [9]
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Total Net Assets
$28,720,070
Total Number of Portfolio Holdings*
12
Portfolio Turnover Rate
14%
[9]
Holdings [Text Block]
image
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 semi-annual shareholder report contains important information about Franklin Multi-Asset Variable Conservative Growth Fund for the period January 1, 2025, to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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 I1,2
$7
0.14%
[10],[11],[12]
Expenses Paid, Amount $ 7 [10],[11]
Expense Ratio, Percent 0.14% [10],[11]
Net Assets $ 75,631,586
Holdings Count | $ / shares 12 [13]
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Total Net Assets
$75,631,586
Total Number of Portfolio Holdings*
12
Portfolio Turnover Rate
13%
[13]
Holdings [Text Block]
image
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 semi-annual shareholder report contains important information about Franklin Multi-Asset Variable Conservative Growth Fund for the period January 1, 2025, to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-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 SIX MONTHS? (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 II1,2
$20
0.39%
[14],[15],[16]
Expenses Paid, Amount $ 20 [14],[15]
Expense Ratio, Percent 0.39% [14],[15]
Net Assets $ 75,631,586
Holdings Count | $ / shares 12 [17]
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (as of June 30, 2025)
Total Net Assets
$75,631,586
Total Number of Portfolio Holdings*
12
Portfolio Turnover Rate
13%
[17]
Holdings [Text Block]
image
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.
[2]
2 Excludes fees and expenses of the underlying funds in which the Fund invests.
[3]
† Annualized.
[4]
* Does not include derivatives, except purchased options, if any.
[5]
1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products.
[6]
2 Excludes fees and expenses of the underlying funds in which the Fund invests.
[7]
* Reflects fee waivers and/or expense reimbursements, without which expenses would have been higher.
[8]
† Annualized.
[9]
* Does not include derivatives, except purchased options, if any.
[10]
1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products.
[11]
2 Excludes fees and expenses of the underlying funds in which the Fund invests.
[12]
† Annualized.
[13]
* Does not include derivatives, except purchased options, if any.
[14]
1 Does not reflect expenses incurred from investing through variable annuity or variable life insurance products.
[15]
2 Excludes fees and expenses of the underlying funds in which the Fund invests.
[16]
† Annualized.
[17]
* Does not include derivatives, except purchased options, if any.