Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows From Operating Activities
Net Income	$ 478	$ 358
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	39	38
Realized investment gains, net	(110)	(101)
Stock-based compensation	16	15
Interest credited to contract holders'	32	35
Deferred income tax expense	7	21
Changes in:
Investment income receivable	4	2
Premiums and reinsurance receivable	(96)	(105)
Deferred policy acquisition costs	(20)	(32)
Other assets	0	0
Loss and loss expense reserves	215	124
Life policy reserves	70	104
Unearned premiums	133	152
Other liabilities	(11)	(30)
Current income tax receivable/payable	(2)	52
Net cash provided by operating activities	755	633
Cash Flows From Investing Activities
Sale of fixed maturities	25	26
Call or maturity of fixed maturities	961	675
Sale of equity securities	241	225
Purchase of fixed maturities	(1,397)	(974)
Purchase of equity securities	(379)	(294)
Purchase of short-term investments	(75)	0
Investment in finance receivables	(10)	(13)
Collection of finance receivables	22	23
Investment in buildings and equipment, net	(7)	(6)
Change in other invested assets, net	(1)	7
Net cash used in investing activities	(620)	(331)
Cash Flows From Financing Activities
Payment of cash dividends to shareholders	(218)	(208)
Purchase of treasury shares	(41)	(21)
Payments of note payable	(14)	(55)
Proceeds from stock options exercised	14	14
Contract holders' funds deposited	62	66
Contract holders' funds withdrawn	(101)	(108)
Excess tax benefits on stock-based compensation	4	2
Other	(13)	(13)
Net cash used in financing activities	(307)	(323)
Net change in cash and cash equivalents	(172)	(21)
Cash and cash equivalents at beginning of year	591	433
Cash and cash equivalents at end of period	419	412
Supplemental Disclosures of Cash Flow Information:
Interest paid	26	27
Income taxes paid	179	52
Noncash Activities:
Conversion of securities	0	7
Equipment acquired under capital lease obligations	16	10
Cashless exercise of stock options	$ 11	$ 11