8. Separate Accounts, Death Benefits, Other Insurance Benefit Features and Embedded Product Derivatives (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Notes to Financial Statements
Debt securities	$ 369.3	$ 395.5
Equity funds	1,516.3	1,537.7
Other	49.7	58.3
Total	$ 1,935.3	$ 1,991.5