Condensed 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
Earned premiums	$ 954	$ 877	$ 1,885	$ 1,716
Investment income, net of expenses	131	132	259	263
Total realized investment gains, net	14	6	55	19
Fee revenues	3	2	4	3
Other revenues	2	3	4	5
Total revenues	1,104	1,020	2,207	2,006
BENEFITS AND EXPENSES
Insurance losses and policyholder benefits	631	687	1,199	1,269
Underwriting, acquisition and insurance expenses	307	287	607	561
Interest expense	14	13	27	27
Other operating expenses	4	4	9	8
Total benefits and expenses	956	991	1,842	1,865
INCOME BEFORE INCOME TAXES	148	29	365	141
PROVISION (BENEFIT) FOR INCOME TAXES
Current	37	6	91	26
Deferred	1	(9)	10	(3)
Total provision (benefit) for income taxes	38	(3)	101	23
NET INCOME	$ 110	$ 32	$ 264	$ 118
PER COMMON SHARE
Net income-basic (in USD per share)	$ 0.67	$ 0.20	$ 1.62	$ 0.73
Net income-diluted (in USD per share)	$ 0.66	$ 0.20	$ 1.60	$ 0.72