Statement of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash Flows from Operating Activities
Net Income	$ 371	$ 414
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	126	83
Realized investment gains	(13)	(26)
Deferred income taxes	46	143
Gains on sale of businesses (excluding discontinued operations)	(5)	(5)
Net changes in assets and liabilities, net of non-operating effects:
Premiums, accounts and notes receivable	(215)	(129)
Reinsurance recoverables	(30)	(2)
Deferred policy acquisition costs	(47)	(48)
Other assets	155	41
Insurance liabilities	637	77
Accounts payable, accrued expenses and other liabilities	(166)	(366)
Current income taxes	105	(87)
Other, net	(23)	(44)
Net cash provided by operating activities	941	51
Proceeds from investments sold:
Fixed maturities	221	155
Equity securities	0	0
Commercial mortgage loans	165	28
Other (primarily short-term and other long-term investments)	300	221
Investment maturities and repayments:
Fixed maturities	317	319
Commercial mortgage loans	36	75
Investments purchased:
Fixed maturities	(831)	(790)
Equity securities	0	(8)
Commercial mortgage loans	(180)	(18)
Other (primarily short-term and other long-term investments)	(167)	(213)
Property and equipment purchases	(81)	(73)
Acquisitions and dispositions. net	(3,199)	(12)
Net cash used in investing activities	(3,419)	(316)
Cash Flows from Financing Activities
Deposits and interest credited to contractholder deposit funds	261	321
Withdrawals and benefit payments from contractholder deposit funds	(231)	(303)
Change in cash overdraft position	22	6
Net change in short-term debt	123	(222)
Issuance of long-term debt	0	591
Repayment of long-term debt	(326)	(2)
Repurchase of common stock	0	(152)
Issuance of common stock	45	66
Common dividends paid	0	0
Net cash provided by financing activities	(106)	305
Effect of foreign currency rate changes on cash and cash equivalents	5	11
Net increase (decrease) in cash and cash equivalents	(2,579)	51
Cash and cash equivalents, January 1,	4,690	1,605
Cash and cash equivalents, March 31,	2,111	1,656
Supplemental Disclosure of Cash Information:
Income taxes paid, net of refunds	22	106
Interest paid	$ 54	$ 27