
SERIES J (Prospectus Summary): \| SERIES J
Series J (Mid Cap Growth Series)
SBL Fund One Security Benefit Place Topeka, Kansas 66636-0001 Supplement Dated July 14, 2011 to the Prospectus Dated May 1, 2011
The Lowest Quarter Return in the Performance Information section of the Summary for Series J is removed and replaced with the following:
Lowest Quarter Return 4Q 2008 -28.87% Please Retain This Supplement For Future Reference

If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.

Reference 1: 1
-Publisher SEC
-Name Form
-Number N-1A
-Chapter A
-Section 4
-Paragraph 2
-Subparagraph ii
-Subsection b

Name:	rr_BarChartClosingTextBlock
Namespace Prefix:	rr
Data Type:	us-types:textBlockItemType
Balance Type:	na
Period Type:	duration