Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows From Operating Activities
Net Income	$ 739	$ 403
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	48	40
Gain (Loss) on Sale of Investments	(367)	(156)
Share-based compensation	22	19
Interest credited to contract holders'	37	36
Deferred income tax expense	130	32
Changes in:
Investment income receivable	5	6
Premiums and reinsurance receivable	(114)	(66)
Deferred policy acquisition costs	(53)	(44)
Other assets	(22)	(34)
Loss and loss expense reserves	305	265
Life policy and investment contract reserves	68	71
Unearned premiums	187	168
Other liabilities	(37)	(46)
Current income tax receivable/payable	(122)	52
Net cash provided by operating activities	826	746
Cash Flows From Investing Activities
Sale of fixed maturities	6	20
Call or maturity of fixed maturities	920	815
Sale of equity securities	293	290
Purchase of fixed maturities	(1,250)	(1,155)
Purchase of equity securities	(311)	(399)
Investment in finance receivables	(25)	(21)
Collection of finance receivables	18	17
Investment in buildings and equipment	(14)	(14)
Change in other invested assets, net	(17)	(12)
Net cash used in investing activities	(380)	(459)
Cash Flows From Financing Activities
Payment of cash dividends to shareholders	(251)	(239)
Shares acquired - share repurchase authorization	(125)	(70)
Changes in note payable	6	(3)
Proceeds from stock options exercised	7	10
Contract holders' funds deposited	62	60
Contract holders' funds withdrawn	(133)	(119)
Other	(53)	(29)
Net cash used in financing activities	(487)	(390)
Net change in cash and cash equivalents	(41)	(103)
Cash and cash equivalents at beginning of year	657	777
Cash and cash equivalents at end of period	616	674
Supplemental Disclosures of Cash Flow Information:
Interest paid	27	26
Income taxes paid	82	44
Noncash Activities
Conversion of securities	0	5
Equipment acquired under capital lease obligations	14	10
Cashless exercise of stock options	4	6
Other assets and other liabilities	$ 38	$ 74