Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 517	$ 421	$ 164
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	50	44	42
Realized gains on investments, net	(83)	(42)	(70)
Stock-based compensation	18	16	13
Interest credited to contract holders	44	44	51
Deferred income tax (benefit) expense	19	26	(18)
Changes in:
Investment income receivable	(6)	4	0
Premiums and reinsurance receivable	(64)	(122)	(128)
Deferred policy acquisition costs	(44)	(28)	(30)
Other assets	(32)	(4)	2
Loss and loss expense reserves	81	(109)	139
Life policy reserves	84	72	76
Unearned premiums	184	159	80
Other liabilities	77	78	(49)
Current income tax receivable/payable	(49)	79	(25)
Net cash provided by operating activities	796	638	247
CASH FLOWS FROM INVESTING ACTIVITIES
Sale of fixed maturities	40	144	71
Call or maturity of fixed maturities	930	927	808
Sale of equity securities	178	216	539
Purchase of fixed maturities	(1,381)	(1,166)	(1,087)
Purchase of equity securities	(265)	(425)	(337)
Investment in buildings and equipment, net	(7)	(6)	(7)
Investment in finance receivables	(39)	(33)	(32)
Collection of finance receivables	30	34	30
Change in other invested assets, net	5	5	7
Net cash provided by investing activities	(509)	(304)	(8)
CASH FLOWS FROM FINANCING ACTIVITIES
Payment of cash dividends to shareholders	(263)	(256)	(255)
Purchase of treasury shares	(52)	0	(32)
Increase in notes payable	0	0	55
Proceeds from stock options exercised	25	10	1
Contract holders' funds deposited	86	99	172
Contract holders' funds withdrawn	(128)	(126)	(121)
Excess tax benefits on share-based compensation	5	1	5
Other	(14)	(13)	(11)
Net cash used in financing activities	(341)	(285)	(186)
Net change in cash and cash equivalents	(54)	49	53
Cash and cash equivalents at beginning of year	487	438	385
Cash and cash equivalents at end of period	433	487	438
Supplemental disclosures of cash flow information:
Interest paid	53	54	53
Income taxes paid	222	38	51
Non-cash activities:
Conversion of investment securities	0	26	0
Equipment acquired under capital lease obligations	28	23	28
Cashless exercise of stock options	$ 28	$ 12	$ 0