Consolidated Balance Sheet Parentheticals (Unaudited at September 30, 2014) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Consolidated Balance Sheet (Unaudited at September 30, 2014)
Fixed maturities, available for sale, amortized cost	$ 61,043	$ 62,196
Equity securities, available for sale, cost	$ 609	$ 686
Common stock, shares authorized	1,750.0	1,750.0
Common stock, shares issued	331.4	353.5
Common stock, shares outstanding	331.4	353.5	364.1	377.4
Treasury stock, at cost, shares	427.6	401.5