Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows from Operating Activities
Net Income	$ 1,217	$ 988
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	406	252
Realized investment gains	(20)	(56)
Deferred income taxes	67	182
Gains on sale of businesses (excluding discontinued operations)	(14)	(20)
Net changes in assets and liabilities, net of non-operating effects:
Premiums, accounts and notes receivable	(20)	(133)
Reinsurance recoverables	50	8
Deferred policy acquisition costs	(106)	(106)
Other assets	166	(292)
Insurance liabilities	75	380
Accounts payable, accrued expenses and other liabilities	(394)	293
Current income taxes	141	(202)
Other, net	(11)	(51)
Net cash provided by operating activities	1,557	1,243
Proceeds from investments sold:
Fixed maturities	439	452
Equity securities	8	5
Commercial mortgage loans	325	166
Other (primarily short-term and other long-term investments)	649	999
Investment maturities and repayments:
Fixed maturities	1,030	943
Commercial mortgage loans	311	274
Investments purchased:
Fixed maturities	(1,907)	(2,309)
Equity securities	(8)	(18)
Commercial mortgage loans	(314)	(279)
Other (primarily short-term and other long-term investments)	(600)	(1,169)
Property and equipment purchases	(329)	(291)
Acquisitions and dispositions. net	(3,468)	1
Net cash used in investing activities	(3,864)	(1,226)
Cash Flows from Financing Activities
Deposits and interest credited to contractholder deposit funds	999	1,002
Withdrawals and benefit payments from contractholder deposit funds	(927)	(895)
Change in cash overdraft position	19	(57)
Net change in short-term debt	123	(222)
Issuance of long-term debt	0	587
Repayment of long-term debt	(326)	(2)
Repurchase of common stock	(85)	(225)
Issuance of common stock	58	100
Common dividends paid	(11)	(11)
Net cash provided by financing activities	(150)	277
Effect of foreign currency rate changes on cash and cash equivalents	3	3
Net increase (decrease) in cash and cash equivalents	(2,454)	297
Cash and cash equivalents, January 1,	4,690	1,605
Cash and cash equivalents, June 30,	2,236	1,902
Supplemental Disclosure of Cash Information:
Income taxes paid, net of refunds	414	466
Interest paid	$ 186	$ 124