Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows From Operating Activities
Net Income	$ 403	$ 491
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	40	34
Realized investment gains, net	(156)	(161)
Share-based compensation	19	18
Interest credited to contract holders'	36	36
Deferred income tax expense	32	20
Changes in:
Investment income receivable	6	8
Premiums and reinsurance receivable	(66)	(111)
Deferred policy acquisition costs	(44)	(31)
Other assets	(34)	(32)
Loss and loss expense reserves	265	273
Life policy reserves	71	75
Unearned premiums	168	187
Other liabilities	(46)	11
Current income tax receivable/payable	52	17
Net cash provided by operating activities	746	835
Cash Flows From Investing Activities
Sale of fixed maturities	20	15
Call or maturity of fixed maturities	815	1,160
Sale of equity securities	290	311
Purchase of fixed maturities	(1,155)	(1,465)
Purchase of equity securities	(399)	(396)
Investment in finance receivables	(21)	(13)
Collection of finance receivables	17	24
Investment in buildings and equipment, net	(14)	(9)
Change in other invested assets, net	(12)	(13)
Net cash used in investing activities	(459)	(386)
Cash Flows From Financing Activities
Payment of cash dividends to shareholders	(239)	(229)
Shares acquired - share repurchase authorization	(70)	(2)
Payments of note payable	(3)	(15)
Proceeds from stock options exercised	10	17
Contract holders' funds deposited	60	71
Contract holders' funds withdrawn	(119)	(118)
Excess tax benefits on stock-based compensation	0	4
Other	(29)	(21)
Net cash used in financing activities	(390)	(293)
Net change in cash and cash equivalents	(103)	156
Cash and cash equivalents at beginning of year	777	544
Cash and cash equivalents at end of period	674	700
Supplemental Disclosures of Cash Flow Information:
Interest paid	26	26
Income taxes paid	44	152
Noncash Activities
Conversion of securities	5	4
Equipment acquired under capital lease obligations	10	18
Cashless exercise of stock options	6	10
Other assets and other liabilities	$ 74	$ 29