S000017007 [Member] Shareholder Fees - ClearBridge Variable Small Cap Growth Portfolio |
Dec. 31, 2025 |
|---|---|
| Class I | |
| Prospectus [Line Items] | |
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | |
| Maximum Deferred Sales Charge (as a percentage) | |
| Class II | |
| Prospectus [Line Items] | |
| Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) | |
| Maximum Deferred Sales Charge (as a percentage) |