| Average Annual Total Returns As of 2/28/2010 | Average Annual Total Returns As of 12/31/2009 | ||||||||||
| Variable Investment Subaccounts | Inception Date | YTD % | 1 Year % | 3 Years % | 5 Years % | 10 Years % | Since Inception % | 1 Year % | 5 Years % | 10 Yrs/Since Inception % | |
| Balanced: | |||||||||||
| Conservative Balanced | 01/13/84 | 0.68 | 33.26 | -0.73 | 2.02 | 2.15 | 6.77 | 18.94 | 1.80 | 1.76 | |
| Flexible Managed | 01/13/84 | 0.42 | 35.60 | -2.22 | 1.49 | 1.99 | 7.37 | 18.88 | 1.39 | 1.31 | |