8. Separate Accounts, Death Benefits and Other Insurance Benefit Features and Embedded Product Derivatives (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2011 As restated and amended [Member]
Debt securities	$ 377.6	$ 395.5
Equity funds	1,553.9	1,537.7
Other	52.5	58.3
Total	$ 1,984.0	$ 1,991.5