Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues
Premiums Earned	$ 12,328	$ 12,066	$ 11,838
Investment Income	1,394	1,465	1,556
Other Revenues	7	14	8
Realized Investment Gains (Losses), Net
Total Other-Than-Temporary Impairment Losses on Investments	(7)	(11)	(40)
Other-Than-Temporary Impairment Losses on Investments Recognized in Other Comprehensive Income			(5)
Other Realized Investment Gains, Net	376	413	238
Total Realized Investment Gains, Net	369	402	193
TOTAL REVENUES	14,098	13,947	13,595
Losses and Expenses
Losses and Loss Expenses	6,985	6,520	7,507
Amortization of Deferred Policy Acquisition Costs	2,548	2,454	2,411
Other Insurance Operating Costs and Expenses	1,397	1,411	1,362
Investment Expenses	42	49	38
Other Expenses	16	22	11
Corporate Expenses	249	254	270
TOTAL LOSSES AND EXPENSES	11,237	10,710	11,599
INCOME BEFORE FEDERAL AND FOREIGN INCOME TAX	2,861	3,237	1,996
Federal and Foreign Income Tax	761	892	451
NET INCOME	$ 2,100	$ 2,345	$ 1,545
Net Income Per Share
Basic	$ 8.65	$ 9.08	$ 5.73
Diluted	$ 8.62	$ 9.04	$ 5.69