Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Cash Flows from Operating Activities
Net income	$ 970		$ 1,260		$ 737
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion, net	110		110		120
Deferred income tax expense (benefit)	61		513		(24)
Share-based compensation	145		158		182
Net realized investment gains	(34)		(60)		(163)
Other-than-temporary impairments and provision for loan losses	43		47		132
Net loss (income) attributable to noncontrolling interests	106		(163)		(15)
Changes in operating assets and liabilities before consolidated investment entities:
Restricted and segregated cash and investments	(11)		(186)		245
Deferred acquisition costs	126		(398)		(403)
Other investments, net	48		2		301
Future policy benefits and claims, net	(28)		383		105
Receivables	(260)		(441)		(186)
Brokerage deposits	225		222		(94)
Accounts payable and accrued expenses	(80)		195		26
Derivatives collateral, net	738		111		(1,914)
Other, net	207		(54)		86
Changes in operating assets and liabilities of consolidated investment entities, net	(188)		148		(453)
Net cash provided by (used in) operating activities	2,178		1,847		(1,318)
Available-for-Sale securities:
Proceeds from sales	888		1,519		5,630
Maturities, sinking fund payments and calls	5,206		6,404		5,855
Purchases	(7,236)		(7,502)		(17,815)
Proceeds from sales, maturities and repayments of commercial mortgage loans	224		226		294
Funding of commercial mortgage loans	(238)		(154)		(104)
Proceeds from sales of other investments	360		189		75
Purchase of other investments	(422)		(102)		(14)
Purchase of investments by consolidated investment entities	(2,871)		(1,935)
Proceeds from sales, maturities and repayments of investments by consolidated investment entities	3,399		2,005
Purchase of land, buildings, equipment and software	(250)		(131)		(83)
Acquisitions			(866)
Proceeds from sale of business	150
Change in consumer banking loans and credit card receivables, net	(349)		(372)		(218)
Other, net	(7)		(15)		7
Net cash used in investing activities	(1,146)		(734)		(6,373)
Investment certificates and banking time deposits:
Proceeds from additions	873		1,029		2,411
Maturities, withdrawals and cash surrenders	(1,243)		(1,871)		(3,177)
Change in other banking deposits	1,210		842		1,187
Policyholder and contractholder account values:
Consideration received	1,378		1,593		4,863
Net transfers from (to) separate accounts	39		(1,337)		195
Surrenders and other benefits	(1,311)		(1,338)		(1,923)
Deferred premium options, net	(254)		(182)		(82)
Proceeds from issuance of common stock					869
Issuance of debt, net of issuance costs			744		491
Repayments of debt	(20)		(354)		(550)
Change in short-term borrowings, net	107		397
Dividends paid to shareholders	(212)		(183)		(164)
Repurchase of common shares	(1,495)		(582)		(11)
Exercise of stock options	66		113		6
Excess tax benefits from share-based compensation	90		9		12
Borrowings by consolidated investment entities	163		163		234
Repayments of debt by consolidated investment entities	(603)		(287)
Noncontrolling interests investments in subsidiaries	155		77		231
Distributions to noncontrolling interests	(54)		(171)		(45)
Other, net			(5)		(2)
Net cash provided by (used in) financing activities	(1,111)		(1,343)		4,545
Effect of exchange rate changes on cash	(1)		(6)		15
Net decrease in cash and cash equivalents	(80)	[1]	(236)	[1]	(3,131)	[1]
Cash and cash equivalents at beginning of period	2,861	[1]	3,097	[1]	6,228	[1]
Cash and cash equivalents at end of period	2,781	[1]	2,861	[1]	3,097	[1]
Supplemental Disclosures:
Interest paid before consolidated investment entities	201		231		251
Income taxes paid, net	370		61		98
Non-cash investing activity:
Affordable housing partnership commitments not yet remitted	137		188
Non-cash financing activity:
Dividends declared but not paid	$ 62

[1] Cash and cash equivalents includes cash held for sale. See Note 24 for additional information.