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	$ 1,037	$ 1,682
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	285	275
Realized capital gains and losses	92	(280)
Gain on disposition of operations	(4)	(2)
Interest credited to contractholder funds	558	578
Changes in:
Policy benefits and other insurance reserves	978	500
Unearned premiums	540	762
Deferred policy acquisition costs	(159)	(219)
Premium installment receivables, net	(236)	(290)
Reinsurance recoverables, net	(420)	(133)
Income taxes	30	(60)
Other operating assets and liabilities	41	(127)
Net cash provided by operating activities	2,742	2,686
Proceeds from sales
Fixed income securities	19,132	22,796
Equity securities	4,069	2,688
Limited partnership interests	634	795
Mortgage loans	0	6
Other investments	206	178
Investment collections
Fixed income securities	3,430	3,248
Mortgage loans	403	305
Other investments	281	254
Investment purchases
Fixed income securities	(22,282)	(22,928)
Equity securities	(4,113)	(3,238)
Limited partnership interests	(1,128)	(930)
Mortgage loans	(460)	(524)
Other investments	(674)	(743)
Change in short-term investments, net	94	(577)
Change in other investments, net	(60)	(16)
Purchases of property and equipment, net	(190)	(219)
Net cash (used in) provided by investing activities	(658)	1,095
Cash flows from financing activities
Repayments of long-term debt	(16)	(20)
Contractholder fund deposits	785	784
Contractholder fund withdrawals	(1,537)	(1,793)
Dividends paid on common stock	(364)	(365)
Dividends paid on preferred stock	(87)	(87)
Treasury stock purchases	(1,154)	(2,216)
Shares reissued under equity incentive plans, net	123	121
Excess tax benefits on share-based payment arrangements	25	44
Other	35	(1)
Net cash used in financing activities	(2,190)	(3,533)
Net (decrease) increase in cash	(106)	248
Cash at beginning of period	495	657
Cash at end of period	$ 389	$ 905