Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows From Operating Activities
Net Income	$ 186	$ 301
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	32	27
Gain (Loss) on Sale of Investments	(90)	149
Share-based compensation	16	14
Interest credited to contract holders'	23	24
Deferred income tax expense	(33)	32
Changes in:
Investment income receivable	4	4
Premiums and reinsurance receivable	(129)	(91)
Deferred policy acquisition costs	(41)	(45)
Other assets	(14)	(37)
Loss and loss expense reserves	195	196
Life policy and investment contract reserves	47	50
Unearned premiums	174	154
Other liabilities	(85)	(82)
Current income tax receivable/payable	(1)	47
Net cash provided by operating activities	464	445
Cash Flows From Investing Activities
Sale of fixed maturities	5	12
Call or maturity of fixed maturities	674	540
Sale of equity securities	134	288
Purchase of fixed maturities	(905)	(802)
Purchase of equity securities	(149)	(352)
Investment in finance receivables	(16)	(14)
Collection of finance receivables	12	11
Investment in buildings and equipment	(9)	(9)
Change in other invested assets, net	(11)	(7)
Net cash used in investing activities	(265)	(333)
Cash Flows From Financing Activities
Payment of cash dividends to shareholders	(166)	(158)
Shares acquired - share repurchase authorization	(125)	(70)
Proceeds from (Repayments of) Notes Payable	37
Changes in note payable		(3)
Proceeds from stock options exercised	5	8
Contract holders' funds deposited	43	42
Contract holders' funds withdrawn	(88)	(83)
Other	(41)	(19)
Net cash used in financing activities	(335)	(283)
Net change in cash and cash equivalents	(136)	(171)
Cash and cash equivalents at beginning of year	657	777
Cash and cash equivalents at end of period	521	606
Supplemental Disclosures of Cash Flow Information:
Interest paid	26	26
Income taxes paid	60	23
Noncash Activities
Conversion of securities	3	5
Equipment acquired under capital lease obligations	8	6
Cashless exercise of stock options	3	4
Other assets and other liabilities	$ 28	$ 70