Separate Accounts, Death Benefits and Other Insurance Benefit Features and Embedded Product Derivative - Narrative (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Insurance [Abstract]
Assets Supporting Fixed Indexed Annuities, Fair Value	$ 2,100,000,000		$ 2,000,000,000
Fair value of embedded derivatives	97,200,000		78,900,000
Embedded derivatives gains and (losses) recognized in earnings	$ (11,700,000)	$ (600,000)