CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows from Operating Activities
Net income	$ 365	$ 248
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation, amortization and accretion, net	58	56
Deferred income tax expense (benefit)	41	(56)
Share-based compensation	33	32
Net realized investment gains	(4)	(3)
Net unrealized trading losses		1
Income from equity method investments	(1)	(9)
Other-than-temporary impairments and provision for loan losses	3	7
Net losses (gains) of consolidated investment entities	(26)	5
Changes in operating assets and liabilities:
Restricted and segregated cash and investments	264	(85)
Deferred acquisition costs	(3)	(51)
Other investments, net	(6)	2
Future policy benefits and claims, net	(237)	370
Receivables	(77)	(7)
Brokerage deposits	(227)	23
Accounts payable and accrued expenses	(193)	(165)
Derivatives collateral, net	(121)	(526)
Cash held by consolidated investment entities	(302)	(92)
Investment properties of consolidated investment entities	(45)	78
Other operating assets and liabilities of consolidated investment entities, net	(62)	19
Other, net	74	328
Net cash provided by (used in) operating activities	(466)	175
Available-for-Sale securities:
Proceeds from sales	169	100
Maturities, sinking fund payments and calls	1,249	1,174
Purchases	(1,187)	(1,529)
Proceeds from sales, maturities and repayments of commercial mortgage loans	79	46
Funding of commercial mortgage loans	(94)	(72)
Proceeds from sales of other investments	67	53
Purchase of other investments	(86)	(76)
Purchase of investments by consolidated investment entities	(531)	(324)
Proceeds from sales, maturities and repayments of investments by consolidated investment entities	690	468
Purchase of land, buildings, equipment and software	(14)	(61)
Change in consumer loans, net	50	(14)
Other, net	(3)	1
Net cash provided by (used in) investing activities	389	(234)
Investment certificates and banking time deposits:
Proceeds from additions	589	185
Maturities, withdrawals and cash surrenders	(393)	(254)
Change in other banking deposits		149
Policyholder and contractholder account values:
Consideration received	303	392
Net transfers to separate accounts	(36)	(9)
Surrenders and other benefits	(321)	(335)
Deferred premium options, net	(98)	(76)
Change in short-term borrowings, net	(1)
Dividends paid to shareholders	(92)	(62)
Repurchase of common shares	(406)	(292)
Exercise of stock options	48	40
Excess tax benefits from share-based compensation	51	15
Borrowings by consolidated investment entities	467	4
Repayments of debt by consolidated investment entities	(291)	(90)
Noncontrolling interests investments in subsidiaries	76	4
Distributions to noncontrolling interests	(9)	(88)
Other, net	(1)
Net cash used in financing activities	(114)	(417)
Effect of exchange rate changes on cash	(20)	7
Net decrease in cash and cash equivalents	(211)	(469)
Cash and cash equivalents at beginning of period	2,371	2,781
Cash and cash equivalents at end of period	2,160	2,312
Supplemental Disclosures:
Interest paid before consolidated investment entities	35	37
Income taxes paid (received), net	10	(79)
Non-cash investing activity:
Affordable housing partnership commitments not yet remitted	$ 10