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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Amortized Cost of Fixed Maturity Securities $ 4,129.5 $ 4,266.1
Available for sale Securities, Equity Securities, Cost 481.4 367.3
Fair Value of Notes Payable $ 678.5 $ 638.7
Common Stock, Par Value $ 0.1 $ 0.1
Common Stock, Shares Authorized 100,000,000 100,000,000
Common Stock, Shares Issued 58,353,230 60,248,582
Common Stock, Shares, Outstanding 58,353,230 60,248,582