Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Operating Activities
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 1,261	$ 416
Adjustments to reconcile net income to net cash provided by operating activities
Amortization of deferred policy acquisition costs and present value of future profits	(1,212)	(1,348)
Increase (Decrease) in Deferred Policy Acquisition Costs	(1,055)	(1,032)
Change in reserve for future policy benefits and unpaid losses and loss adjustment expenses and unearned premiums	449	405
Change in reinsurance recoverables	161	(108)
Change in receivables and other assets	(289)	(221)
Change in payables and accruals	(339)	(840)
Increase (Decrease) in Deferred Income Taxes	(254)	(43)
Realized Investment Gains (Losses)	(30)	(127)
Net decrease in equity securities, trading	0	3,992
Depreciation and amortization	245	152
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	(7)	659
Gains (Losses) on Extinguishment of Debt	(21)	0
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	(28)
Other operating activities, net	85	(54)
Net cash provided by operating activities	2,000	895
Proceeds from Sale, Maturity and Collection of Investments [Abstract]
Proceeds from Sale of Available-for-sale Securities, Debt	19,210	19,960
Proceeds from Sale and Maturity of Securities, Fair Value Option	111	378
Proceeds from Sale of Available-for-sale Securities, Equity	1,171	293
Proceeds from Sale and Collection of Mortgage Notes Receivable	613	333
Proceeds from Limited Partnership Investments	298	322
Payments for the purchase of investments [Abstract]
Fixed maturities, available-for-sale	(19,919)	(17,247)
Payments to Acquire Available-for-sale Securities, Fair Value Option	180	320
Equity securities, available-for-sale	(1,007)	(210)
Mortgage loans	(612)	(466)
Payments to Acquire Limited Partnership Interests	411	221
Proceeds from Divestiture of Businesses, Net of Cash Divested		963
Derivatives, net	64	115
Payments for (Proceeds from) Policy Loans	12	(8)
Payments to Acquire Property, Plant, and Equipment	(194)	(57)
Proceeds from Sale of Short-term Investments	1,472	(1,919)
Other investing activities, net	(1)	(13)
Net cash used for investing activities	603	1,919
Financing Activities
Additions to Contract Holders Funds	3,703	5,448
Withdrawals and other deductions from investment and universal life-type contracts	(12,935)	(18,416)
Net Change Contract Holders Funds	8,218	11,202
Repayments at maturity or settlement of consumer notes	(31)	(13)
Proceeds from (Payments for) in Securities Sold under Agreements to Repurchase	313
Repayment of long-term debt	(585)	(200)
Return of shares under incentive and stock compensation plans and other to treasury stock	(40)	(12)
Payments for Repurchase of Common Stock	(800)	(1,496)
Dividends paid on common stock	(229)	(213)
Net cash provided by (used for) financing activities	(2,306)	(3,676)
Net Receipts from to Investment Contracts Related to Policyholder Funds International Unit Linked Bonds and Pension Products	0	3,992
Foreign exchange rate effect on cash	(31)	(126)
Cash, Period Increase (Decrease)	266	(988)
Cash - beginning of period	399	1,428
Cash - end of period	665	440
Supplemental Disclosure of Cash Flow Information
Income taxes paid (received)	80	78
Interest paid	(258)	(268)
Reinsurance Loss on Dispositions [Member]
Adjustments to reconcile net income to net cash provided by operating activities
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ 28	$ 0