Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities
Net income	$ 676	$ 618
Adjustments to reconcile net income to net cash flows provided by operating activities:
Deferred income tax expense	125	112
Trading portfolio activity	8	0
Net realized investment gains	(62)	(26)
Equity method investees	89	265
Net amortization of investments	(30)	(17)
Depreciation and amortization	66	57
Changes in:
Receivables, net	18	(311)
Accrued investment income	(31)	(30)
Deferred acquisition costs	(34)	(24)
Insurance reserves	248	464
Other assets	(121)	(96)
Other liabilities	(106)	61
Other, net	48	47
Total adjustments	218	502
Net cash flows provided by operating activities	894	1,120
Dispositions:
Fixed maturity securities - sales	4,167	4,234
Fixed maturity securities - maturities, calls and redemptions	2,635	2,263
Equity securities	22	79
Limited partnerships	160	200
Mortgage loans	22	137
Purchases:
Fixed maturity securities	(6,877)	(7,472)
Equity securities	(18)	(1)
Limited partnerships	(85)	(222)
Mortgage loans	(153)	(88)
Change in other investments	(2)	10
Change in short term investments	(29)	241
Purchases of property and equipment	(80)	(94)
Disposals of property and equipment	0	107
Other, net	20	2
Net cash flows used by investing activities	(218)	(604)
Cash Flows from Financing Activities
Dividends paid to common stockholders	(761)	(746)
Proceeds from the issuance of debt	496	498
Repayment of debt	(391)	(358)
Other, net	(17)	1
Net cash flows used by financing activities	(673)	(605)
Effect of foreign exchange rate changes on cash	9	(8)
Net change in cash	12	(97)
Cash, beginning of year	271	387
Cash, end of period	$ 283	$ 290