Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Amortized Cost of Fixed Maturity Securities	$ 4,312.7	$ 4,370.5
Available for sale Securities, Equity Securities, Cost	562.1	530.0
Fair Value of Notes Payable	$ 826.3	$ 667.1
Common Stock, Par Value	$ 0.1	$ 0.1
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Shares Issued	55,408,431	55,653,437
Common Stock, Shares, Outstanding	55,408,431	55,653,437