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Consolidated Balance Sheets (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Fixed Maturities, cost $ 35,398 $ 34,762
Equity Securities, cost $ 1,244 $ 1,264
Preferred Stock, shares authorized 8,000,000 8,000,000
Preferred Stock, par value $ 1 $ 1
Preferred Stock, shares issued 0 0
Common stock, shares authorized 1,200,000,000 1,200,000,000
Common Stock, par value $ 1 $ 1
Common Stock, shares issued 371,980,460 371,980,460
Treasury Stock, shares 110,217,445 99,519,509