Consolidated Balance Sheet Parentheticals (Parentheticals) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Fixed maturities securities at amortized cost	$ 37,199	$ 37,335
Equity securities at cost	208	210
Reinsurance Recoverables, Allowance	48	48
Premiums Receivable, Allowance for Doubtful Accounts	58	61
Accumulated depreciation on property and equipment	376	364
Due to Related Parties	$ 72	$ 153
Common stock, par value	$ 2.50	$ 2.50
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued	273,040,243	273,040,243
Common stock, shares outstanding	270,259,928	269,980,202
Treasury stock, shares	2,780,315	3,060,041