CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities
Net income	$ 517	$ 1,032
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	188	179
Realized capital gains and losses	125	(247)
Gain on disposition of operations	(3)	0
Interest credited to contractholder funds	375	384
Changes in:
Policy benefits and other insurance reserves	577	526
Unearned premiums	62	244
Deferred policy acquisition costs	(72)	(132)
Premium installment receivables, net	(27)	(158)
Reinsurance recoverables, net	(120)	(144)
Income taxes	(176)	(283)
Other operating assets and liabilities	(88)	(98)
Net cash provided by operating activities	1,358	1,303
Proceeds from sales
Fixed income securities	12,589	16,012
Equity securities	2,487	2,074
Limited partnership interests	363	591
Other investments	144	132
Investment collections
Fixed income securities	2,138	2,243
Mortgage loans	150	357
Other investments	168	177
Investment purchases
Fixed income securities	(12,947)	(16,482)
Equity securities	(2,672)	(1,920)
Limited partnership interests	(703)	(563)
Mortgage loans	(264)	(509)
Other investments	(449)	(518)
Change in short-term investments, net	(669)	(391)
Change in other investments, net	(39)	(16)
Purchases of property and equipment, net	(120)	(133)
Net cash provided by investing activities	176	1,054
Cash flows from financing activities
Repayments of long-term debt	(16)	(9)
Contractholder fund deposits	522	527
Contractholder fund withdrawals	(1,013)	(1,152)
Dividends paid on common stock	(240)	(243)
Dividends paid on preferred stock	(58)	(58)
Treasury stock purchases	(904)	(1,424)
Shares reissued under equity incentive plans, net	72	109
Excess tax benefits on share-based payment arrangements	20	43
Other	34	(2)
Net cash used in financing activities	(1,583)	(2,209)
Net (decrease) increase in cash	(49)	148
Cash at beginning of period	495	657
Cash at end of period	$ 446	$ 805