S000008096 [Member] Performance Management - SA JPMorgan Global Equities Portfolio |
Jul. 28, 2025 |
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| Prospectus [Line Items] | |||||||||||||||||||||||||||||
| Bar Chart and Performance Table [Heading] | Performance Information | ||||||||||||||||||||||||||||
| Performance Narrative [Text Block] | The following bar chart illustrates the risks of investing in the Portfolio by showing changes in the Portfolio’s performance from calendar year to calendar year and the table compares the Portfolio’s average annual returns to those of the MSCI World Index (net) (a broad-based securities market index), which is relevant to the Portfolio because it has characteristics similar to the Portfolio’s investment strategies. The Portfolio’s returns prior to July 28, 2025, as reflected in the bar chart and table, are the returns of the Portfolio when it followed a different investment objective and different investment strategies under the name “SA JPMorgan Global Equities Portfolio.” Fees and expenses incurred at the contract level are not reflected in the bar chart or table. If these amounts were reflected, returns would be less than those shown. Of course, past performance is not necessarily an indication of how the Portfolio will perform in the future. FIAM LLC (“FIAM”) assumed subadvisory duties of the Portfolio on July 28, 2025. Prior to July 28, 2025, J.P. Morgan Investment Management Inc. subadvised the Portfolio.
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| Performance Past Does Not Indicate Future [Text] | Of course, past performance is not necessarily an indication of how the Portfolio will perform in the future. | ||||||||||||||||||||||||||||
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart illustrates the risks of investing in the Portfolio by showing changes in the Portfolio’s performance from calendar year to calendar year and the table compares the Portfolio’s average annual returns to those of the MSCI World Index (net) (a broad-based securities market index), which is relevant to the Portfolio because it has characteristics similar to the Portfolio’s investment strategies. | ||||||||||||||||||||||||||||
| Bar Chart Does Not Reflect Sales Loads [Text] | Fees and expenses incurred at the contract level are not reflected in the bar chart or table. If these amounts were reflected, returns would be less than those shown. | ||||||||||||||||||||||||||||
| Bar Chart [Heading] | (Class 1 Shares) | ||||||||||||||||||||||||||||
| Bar Chart Closing [Text Block] | During the period shown in the bar chart:
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| Performance Table Heading | Average Annual Total Returns (For the periods ended December 31, 2024) | ||||||||||||||||||||||||||||
| Class 1 | |||||||||||||||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||||||||||||||
| Year to Date Return, Label [Optional Text] | Year to Date Most Recent Quarter: | ||||||||||||||||||||||||||||
| Bar Chart, Year to Date Return | 10.82% | ||||||||||||||||||||||||||||
| Bar Chart, Year to Date Return, Date | Jun. 30, 2025 | ||||||||||||||||||||||||||||
| Highest Quarterly Return, Label [Optional Text] | Highest Quarterly Return: | ||||||||||||||||||||||||||||
| Highest Quarterly Return | 19.94% | ||||||||||||||||||||||||||||
| Highest Quarterly Return, Date | Jun. 30, 2020 | ||||||||||||||||||||||||||||
| Lowest Quarterly Return, Label [Optional Text] | Lowest Quarterly Return: | ||||||||||||||||||||||||||||
| Lowest Quarterly Return | (24.32%) | ||||||||||||||||||||||||||||
| Lowest Quarterly Return, Date | Mar. 31, 2020 |