Separate Accounts, Death Benefits and Other Insurance Benefit Features and Embedded Product Derivatives Non-Insurance Guaranteed Product Features (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Account Value	$ 929.0	$ 935.2
Average Attained Age of Annuitant	64 years	64 years
GMWB
Account Value	551.1	547.4
Average Attained Age of Annuitant	64 years	63 years
GMAB
Account Value	370.9	379.5
Average Attained Age of Annuitant	59 years	58 years
COMBO
Account Value	$ 7.0	$ 8.3
Average Attained Age of Annuitant	63 years	61 years