Consolidated Balance Sheet Parentheticals (Parentheticals) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Fixed maturities securities at amortized cost	$ 37,335	$ 39,311
Equity securities at cost	210	179
Allowance for uncollectible reinsurance receivables	48	71
Allowance for uncollectible insurance receivables	61	84
Accumulated depreciation on property and equipment	364	365
Due to Related Parties	$ 153	$ 197
Common stock, par value	$ 0	$ 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	269,980,202	269,717,583
Treasury stock, shares	3,060,041	3,322,660