Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows From Operating Activities
Net Income	$ 188	$ 128
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12	14
Realized investment gains, net	(61)	(47)
Stock-based compensation	7	7
Interest credited to contract holders'	13	12
Deferred income tax expense	12	0
Changes in:
Investment income receivable	8	0
Premiums and reinsurance receivable	(23)	(22)
Deferred policy acquisition costs	(9)	2
Other assets	(12)	4
Loss and loss expense reserves	86	138
Life policy reserves	22	20
Unearned premiums	47	27
Other liabilities	(98)	(100)
Current income tax receivable/payable	65	32
Net cash provided by operating activities	257	215
Cash Flows From Investing Activities
Sale of fixed maturities	14	13
Call or maturity of fixed maturities	368	267
Sale of equity securities	132	67
Purchase of fixed maturities	(496)	(348)
Purchase of equity securities	(129)	(67)
Purchase of short-term investments	0	(25)
Investment in finance receivables	(6)	(3)
Collection of finance receivables	8	8
Investment in buildings and equipment, net	(3)	(1)
Change in other invested assets, net	4	1
Net cash used in investing activities	(108)	(88)
Cash Flows From Financing Activities
Payment of cash dividends to shareholders	(74)	(71)
Proceeds from stock options exercised	9	7
Contract holders' funds deposited	26	20
Contract holders' funds withdrawn	(39)	(33)
Excess tax benefits on stock-based compensation	2	3
Other	(4)	(4)
Net cash used in financing activities	(80)	(78)
Net change in cash and cash equivalents	69	49
Cash and cash equivalents at beginning of year	544	591
Cash and cash equivalents at end of period	613	640
Supplemental Disclosures of Cash Flow Information:
Income taxes (refunded) paid	(1)	11
Noncash Activities
Conversion of securities	3	0
Equipment acquired under capital lease obligations	9	3
Cashless exercise of stock options	$ 5	$ 5