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Consolidated Balance Sheet Parentheticals (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Consolidated Balance Sheet        
Fixed maturities, available for sale, amortized cost $ 62,196 $ 60,829    
Equity securities, available for sale, cost $ 686 $ 462    
Common stock, shares authorized 1,750.0 1,750.0    
Common stock, shares issued 353.5 377.4    
Common stock, shares outstanding 353.5 377.4 392.8 434.6
Treasury stock, at cost, shares 401.5 372.3