Commitments and Contingencies (Restricted Assets) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Loss Contingencies [Line Items]
Other fixed maturities-state deposits	$ 13.4		$ 13.1
Securities pledged	236.4	[1]	140.1	[1]
Total restricted assets	249.8		153.2
Fair value of loaned securities	177.3		97.6
Securities pledged as collateral	$ 236.4		$ 140.1

[1] Includes the fair value of loaned securities of $177.3 and $97.6 as of June 30, 2014 and December 31, 2013, respectively, which is included in Securities pledged on the Condensed Consolidated Balance Sheets. In addition, as of June 30, 2014 and December 31, 2013, the Company delivered securities as collateral of $59.1 and $42.5, respectively, which is included in Securities pledged on the Condensed Consolidated Balance Sheets.