CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net income	$ 1,459	$ 1,912
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and other non-cash items	246	293
Realized capital gains and losses	(452)	(123)
Loss on extinguishment of debt	489
Loss (gain) on disposition of operations	644	(15)
Interest credited to contractholder funds	973	959
Changes in:
Policy benefits and other insurance reserves	(787)	(769)
Unearned premiums	670	421
Deferred policy acquisition costs	(208)	13
Premium installment receivables, net	(300)	(178)
Reinsurance recoverables, net	294	(139)
Income taxes	455	669
Other operating assets and liabilities	(412)	(425)
Net cash provided by operating activities	3,071	2,618
Proceeds from sales
Fixed income securities	15,354	13,952
Equity securities	2,231	1,345
Limited partnership interests	676	1,067
Mortgage loans	20	11
Other investments	93	104
Investment collections
Fixed income securities	4,879	3,892
Mortgage loans	783	682
Other investments	213	70
Investment purchases
Fixed income securities	(16,645)	(16,809)
Equity securities	(2,565)	(385)
Limited partnership interests	(911)	(1,232)
Mortgage loans	(423)	(472)
Other investments	(880)	(275)
Change in short-term investments, net	(544)	(1,284)
Change in other investments, net	92	(6)
Purchases of property and equipment, net	(116)	(176)
(Acquisition) disposition of operations	(24)	13
Net cash provided by investing activities	2,233	497
Cash flows from financing activities
Proceeds from issuance of long-term debt	2,267	493
Repayment of long-term debt	(2,605)	(351)
Proceeds from issuance of preferred stock	651
Contractholder fund deposits	1,608	1,571
Contractholder fund withdrawals	(5,458)	(3,938)
Dividends paid on common stock	(237)	(322)
Treasury stock purchases	(1,385)	(729)
Shares reissued under equity incentive plans, net	108	60
Excess tax benefits on share-based payment arrangements	33	7
Other	(10)	(40)
Net cash used in financing activities	(5,028)	(3,249)
Transfer of cash to held for sale	(13)
Net increase (decrease) in cash	263	(134)
Cash at beginning of period	806	776
Cash at end of period	$ 1,069	$ 642