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CONDENSED CONSOLIDATED BALANCE SHEETS PARENTHETICAL (USD $)	Mar. 31, 2013	Dec. 31, 2012
Condensed Consolidated Balance Sheets Parentheticals [Abstract]
Available for Sale at Fair value - Amortized cost	$ 19,838,949,000	$ 19,559,432,000
Preferred stock par value	$ 0.01	$ 0.01
Preferred stock shares authorized	10,000,000	10,000,000
Common stock par value	$ 0.01	$ 0.01
Common stock shares authorized	140,000,000	140,000,000
Common stock shares issued	79,137,758	79,137,758
Common stock shares outstanding	73,300,797	73,927,331
Treasury Shares Held	5,836,961	5,210,427
Allowances for Loan and Lease Losses, Real Estate	$ 9,924,000	$ 11,580,000

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The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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