Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
Cash Flows from Operating Activities
Net income (loss)	$ 859	[1]	$ 479	[1],[2]	$ 691
Adjustments to reconcile net income (loss) to net cash flows provided (used) by operating activities:
Loss on sale of subsidiaries	0		0		251
Deferred income tax expense (benefit)	136		(150)		3
Trading portfolio activity	(9)		17		16
Net Realized Investment Gains Losses Continuing And Discontinuing Operations	50		(67)		60
Equity method investees	238		195		83
Amortization of investments	(27)		17		3
Depreciation and amortization	77		84		83
Changes in:
Receivables, net	(130)		82		731
Accrued investment income	(3)		(1)		0
Deferred acquisition costs	(8)		311		44
Insurance reserves	237		241		(363)
Other assets	(95)		(79)		(48)
Other liabilities	162		126		(48)
Other, net	29		(2)		54
Total adjustments	557		908		749
Net cash flows provided (used) by operating activities	1,416		1,387		1,440
Dispositions:
Fixed maturity securities - sales	5,328		4,390		4,914
Fixed maturity securities - maturities, calls and redemptions	3,219		4,095		3,983
Equity securities	81		57		31
Limited partnerships	290		174		167
Mortgage loans	207		26		57
Purchases:
Fixed maturity securities	(9,827)		(8,675)		(9,365)
Equity securities	0		(62)		(67)
Limited partnerships	(252)		(188)		(271)
Mortgage loans	(120)		(123)		(137)
Change in other investments	7		4		15
Change in short term investments	258		34		(388)
Purchases of property and equipment	(146)		(125)		(71)
Proceeds from Sale of Property, Plant, and Equipment	107		0		0
Proceeds from sale of subsidiaries	0		0		198
Other, net	2		21		16
Net cash flows provided (used) by investing activities	(846)		(372)		(918)
Cash Flows from Financing Activities
Dividends paid to common stockholders	(813)		(811)		(541)
Proceeds from the issuance of debt	498		0		546
Repayment of debt	(358)		0		(549)
Other, net	0		4		25
Net cash flows provided (used) by financing activities	(673)		(807)		(519)
Effect of foreign exchange rate changes on cash	(13)		(11)		(8)
Net change in cash	(116)		197		(5)
Cash, beginning of year	387		190		195
Cash, end of year	$ 271		$ 387		$ 190

[1] Net income (loss) in the first quarter of 2016 and the second quarter of 2015 included a charge related to the application of retroactive reinsurance accounting to adverse reserve development ceded under the 2010 A&EP Loss Portfolio Transfer in our Corporate & Other Non-Core segment.

[2] Net income (loss) in the fourth quarter of 2015 included a charge related to recognition of a premium deficiency in our long term care business.