CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues
Premiums Earned	$ 2,995	$ 2,983	$ 5,999	$ 5,934
Investment Income	368	390	740	791
Other Revenues	9	3	12	5
Realized Investment Gains (Losses), Net
Total Other-Than-Temporary Impairment Losses on Investments	(5)	(30)	(7)	(35)
Other-Than-Temporary Impairment Losses on Investments Recognized in Other Comprehensive Income		(1)		(2)
Other Realized Investment Gains, Net	184	78	324	140
Total Realized Investment Gains, Net	179	47	317	103
Total Revenues	3,551	3,423	7,068	6,833
Losses and Expenses
Losses and Loss Expenses	1,694	1,860	3,262	3,567
Amortization of Deferred Policy Acquisition Costs	617	607	1,204	1,183
Other Insurance Operating Costs and Expenses	358	351	717	717
Investment Expenses	13	10	26	21
Other Expenses	11	3	17	6
Corporate Expenses	62	65	130	133
Total Losses and Expenses	2,755	2,896	5,356	5,627
Income Before Federal and Foreign Income Tax	796	527	1,712	1,206
Federal and Foreign Income Tax	217	123	477	296
Net Income	$ 579	$ 404	$ 1,235	$ 910
Net Income Per Share
Basic	$ 2.22	$ 1.49	$ 4.72	$ 3.33
Diluted	$ 2.21	$ 1.48	$ 4.69	$ 3.31
Dividends Declared Per Share	$ 0.44	$ 0.41	$ 0.88	$ 0.82