CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities
Net income	$ 1,143	$ 1,189
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	180	201
Realized capital gains and losses	(493)	(195)
Loss on extinguishment of debt	480
Gain on disposition of operations	(2)	(6)
Interest credited to contractholder funds	656	744
Changes in:
Policy benefits and other insurance reserves	(607)	(377)
Unearned premiums	165	27
Deferred policy acquisition costs	(107)	6
Premium installment receivables, net	(81)	(9)
Reinsurance recoverables, net	327	27
Income taxes	283	341
Other operating assets and liabilities	(391)	(174)
Net cash provided by operating activities	1,553	1,774
Proceeds from sales
Fixed income securities	10,461	9,918
Equity securities	1,742	1,275
Limited partnership interests	438	796
Mortgage loans	20	11
Other investments	38	88
Investment collections
Fixed income securities	3,658	2,141
Mortgage loans	475	458
Other investments	171	39
Investment purchases
Fixed income securities	(10,637)	(12,345)
Equity securities	(2,010)	(290)
Limited partnership interests	(477)	(664)
Mortgage loans	(314)	(267)
Other investments	(538)	(243)
Change in short-term investments, net	(423)	(392)
Change in other investments, net	91	(57)
Purchases of property and equipment, net	(43)	(116)
Net cash provided by investing activities	2,652	352
Cash flows from financing activities
Change in short-term debt	500
Proceeds from issuance of long-term debt	1,481	493
Repayment of long-term debt	(2,540)	(351)
Proceeds from issuance of preferred stock	278
Contractholder fund deposits	1,119	1,005
Contractholder fund withdrawals	(4,273)	(2,665)
Dividends paid on common stock	(119)	(215)
Treasury stock purchases	(897)	(583)
Shares reissued under equity incentive plans, net	60	26
Excess tax benefits on share-based payment arrangements	29	4
Other	(15)	(45)
Net cash used in financing activities	(4,377)	(2,331)
Net decrease in cash	(172)	(205)
Cash at beginning of period	806	776
Cash at end of period	$ 634	$ 571