CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities
Net income	$ 246	$ 677
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	91	87
Realized capital gains and losses	149	(139)
(Gain) loss on disposition of operations	(2)	1
Interest credited to contractholder funds	190	199
Changes in:
Policy benefits and other insurance reserves	459	115
Unearned premiums	(205)	(117)
Deferred policy acquisition costs	(7)	(35)
Premium installment receivables, net	11	(66)
Reinsurance recoverables, net	(40)	(24)
Income taxes	(26)	59
Other operating assets and liabilities	(152)	(191)
Net cash provided by operating activities	714	566
Proceeds from sales
Fixed income securities	6,216	9,453
Equity securities	1,664	1,152
Limited partnership interests	180	296
Other investments	94	47
Investment collections
Fixed income securities	949	1,213
Mortgage loans	79	114
Other investments	43	60
Investment purchases
Fixed income securities	(5,401)	(9,210)
Equity securities	(1,733)	(1,172)
Limited partnership interests	(270)	(365)
Mortgage loans	(44)	(202)
Other investments	(253)	(193)
Change in short-term investments, net	(1,357)	(63)
Change in other investments, net	(19)	2
Purchases of property and equipment, net	(52)	(59)
Net cash provided by investing activities	96	1,073
Cash flows from financing activities
Repayments of long-term debt	(16)	0
Contractholder fund deposits	261	261
Contractholder fund withdrawals	(492)	(572)
Dividends paid on common stock	(115)	(118)
Dividends paid on preferred stock	(29)	(29)
Treasury stock purchases	(456)	(1,010)
Shares reissued under equity incentive plans, net	30	64
Excess tax benefits on share-based payment arrangements	12	26
Other	31	(2)
Net cash used in financing activities	(774)	(1,380)
Net increase in cash	36	259
Cash at beginning of period	495	657
Cash at end of period	$ 531	$ 916