Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities
Net Income	$ 491	$ 478
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34	39
Realized investment gains, net	(161)	(110)
Stock-based compensation	18	16
Interest credited to contract holders'	36	32
Deferred income tax expense	20	7
Changes in:
Investment income receivable	8	4
Premiums and reinsurance receivable	(111)	(96)
Deferred policy acquisition costs	(31)	(20)
Other assets	(32)	0
Loss and loss expense reserves	273	215
Life policy reserves	75	70
Unearned premiums	187	133
Other liabilities	0	(11)
Current income tax receivable/payable	17	(2)
Net cash provided by operating activities	824	755
Cash Flows From Investing Activities
Sale of fixed maturities	15	25
Call or maturity of fixed maturities	1,160	961
Sale of equity securities	311	241
Purchase of fixed maturities	(1,465)	(1,397)
Purchase of equity securities	(396)	(379)
Purchase of short-term investments	0	(75)
Investment in finance receivables	(13)	(10)
Collection of finance receivables	24	22
Investment in buildings and equipment, net	(9)	(7)
Change in other invested assets, net	(13)	(1)
Net cash used in investing activities	(386)	(620)
Cash Flows From Financing Activities
Payment of cash dividends to shareholders	(229)	(218)
Payments for Repurchase of Common Stock	(2)	(41)
Repayments of Notes Payable	(15)	(14)
Proceeds from stock options exercised	17	14
Contract holders' funds deposited	71	62
Contract holders' funds withdrawn	(118)	(101)
Excess tax benefits on stock-based compensation	4	4
Other	(10)	(13)
Net cash used in financing activities	(282)	(307)
Net change in cash and cash equivalents	156	(172)
Cash and cash equivalents at beginning of year	544	591
Cash and cash equivalents at end of period	700	419
Supplemental Disclosures of Cash Flow Information:
Interest Paid, Net	26	26
Income taxes paid	152	179
Noncash Activities
Conversion of securities	4	0
Equipment acquired under capital lease obligations	18	16
Cashless exercise of stock options	10	11
Liabilities Assumed	$ 29	$ 0