Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
NET INCOME	$ 395	$ 229
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	30	32
Realized gains on investments, net	(77)	(29)
Stock-based compensation	14	12
Interest credited to contract holders	31	25
Deferred income tax expense	15	4
Changes in:
Investment income receivable	0	3
Premiums and reinsurance receivable	(148)	(129)
Deferred policy acquisition costs	(60)	(37)
Other assets	(5)	(4)
Loss and loss expense reserves	77	5
Life policy reserves	53	53
Unearned premiums	234	185
Other liabilities	15	33
Current income tax receivable	(36)	51
Net cash provided by operating activities	538	433
CASH FLOWS FROM INVESTING ACTIVITIES
Sale of fixed maturities	28	131
Call or maturity of fixed maturities	711	689
Sale of equity securities	178	165
Purchase of fixed maturities	(1,016)	(914)
Purchase of equity securities	(216)	(325)
Investment in buildings and equipment, net	(5)	(5)
Investment in finance receivables	(26)	(24)
Collection of finance receivables	22	24
Change in other invested assets, net	4	2
Net cash used in investing activities	(320)	(257)
CASH FLOWS FROM FINANCING ACTIVITIES
Payment of cash dividends to shareholders	(195)	(191)
Proceeds from stock options exercised	17	6
Contract holders' funds deposited	64	79
Contract holders' funds withdrawn	(78)	(83)
Excess tax benefits on stock-based compensation	10	1
Other	(12)	(10)
Net cash used in financing activities	(194)	(198)
Net change in cash and cash equivalents	24	(22)
Cash and cash equivalents at beginning of year	487	438
Cash and cash equivalents at end of period	511	416
Supplemental disclosures of cash flow information:
Interest paid	27	28
Income taxes paid	169	8
Non-cash activities:
Conversion of securities	59	21
Equipment acquired under capital lease obligations	21	20
Cashless exercise of stock options	$ 22	$ 7