Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
NET INCOME	$ 154	$ 86
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	9	11
Realized gains on investments, net	(41)	(13)
Stock-based compensation	5	4
Interest credited to contract holders	11	9
Deferred income tax expense	9	6
Changes in:
Investment income receivable	(2)	3
Premiums and reinsurance receivable	(82)	(19)
Deferred policy acquisition costs	(19)	(14)
Other assets	(2)	(5)
Loss and loss expense reserves	10	8
Life policy reserves	13	15
Unearned premiums	83	47
Other liabilities	(88)	(10)
Current income tax receivable/payable	(3)	20
Net cash provided by operating activities	57	148
CASH FLOWS FROM INVESTING ACTIVITIES
Sale of fixed maturities	12	6
Call or maturity of fixed maturities	221	195
Sale of equity securities	98	99
Purchase of fixed maturities	(325)	(304)
Purchase of equity securities	(108)	(96)
Investment in buildings and equipment, net	(1)	(2)
Investment in finance receivables	(8)	(9)
Collection of finance receivables	7	9
Change in other invested assets, net	2	2
Net cash used in investing activities	(102)	(100)
CASH FLOWS FROM FINANCING ACTIVITIES
Payment of cash dividends to shareholders	(65)	(64)
Purchase of treasury shares	0	0
Increase in notes payable	0	0
Proceeds from stock options exercised	6	1
Contract holders' funds deposited	24	31
Contract holders' funds withdrawn	(31)	(28)
Excess tax benefits on stock-based compensation	8	1
Other	(4)	(3)
Net cash used in financing activities	(62)	(62)
Net change in cash and cash equivalents	(107)	(14)
Cash and cash equivalents at beginning of year	487	438
Cash and cash equivalents at end of period	380	424
Supplemental disclosures of cash flow information:
Interest paid	0	0
Income taxes paid	54	0
Non-cash activities:
Conversion of securities	43	3
Equipment acquired under capital lease obligations	12	6
Cashless exercise of stock options	$ 9	$ 0