CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUES
Earned premiums	$ 839	$ 782
Investment income, net of expenses	131	131
Total realized investment gains, net	13	12
Fee revenues	1	1
Other revenues	2	3
Total revenues	986	929
BENEFITS AND EXPENSES
Insurance losses and policyholder benefits	582	575
Underwriting, acquisition and insurance expenses	274	262
Interest expense	14	13
Other operating expenses	4	4
Total benefits and expenses	874	854
INCOME BEFORE INCOME TAXES	112	75
PROVISION FOR INCOME TAXES
Current	20	24
Deferred	6	(10)
Total provision (benefit) for income taxes	26	14
NET INCOME	86	61
PER COMMON SHARE
Net income-basic	$ 0.53	$ 0.38
Net income-diluted	$ 0.53	$ 0.38
OTHER COMPREHENSIVE INCOME, BEFORE TAX
Unrealized gains on investments available-for-sale	241	142
Reclassification adjustment for (gains) included in net income	(13)	(12)
Unrealized gains (losses) on other	(5)	1
Unrealized gains on investments available-for-sale and other	223	131
Amortization of actuarial loss and prior service cost	2	1
Less: amortization of prior service cost included in net income
Defined benefit pension plan	2	1
Other comprehensive income before tax	225	132
Income tax (expense) benefit related to items of other comprehensive income	(79)	(46)
Other comprehensive income, net of tax	146	86
COMPREHENSIVE INCOME	$ 232	$ 147