Investments and Derivative Instruments (Details Textual 3) (USD $)	3 Months Ended
	Mar. 31, 2014 securities		Mar. 31, 2013		Dec. 31, 2013
Security Owned and Pledged as Collateral, Fair Value	$ 107,000,000				$ 347,000,000
Recovery of previous counterparty losses	7,000,000
Derivative Asset, Fair Value, Gross Asset	1,522,000,000				1,948,000,000
Net realized capital gains (losses), excluding net OTTI losses recognized in earnings	(64,000,000)		53,000,000
Other liabilities	50,000,000
Collateral pledged	50,000,000
Notional amount	141,307,000,000				159,441,000,000
Percent of fair value of securities transferred for collateral obtained on repurchase agreement	at least 95%
Gain (loss) on derivative, net	(80,000,000)		(432,000,000)
Carrying value of mortgage loans associated with the valuation allowance	198,000,000				191,000,000
Valuation allowance amount	4,000,000
Loss on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring	0
Cash Collateral Received	235,000,000				180,000,000
Securities Received as Collateral	184,000,000				243,000,000
Fair Value of Securities Received as Collateral that Can be Resold or Repledged	136,000,000				191,000,000
Securities Received as Collateral, Amount Repledged and Sold	0		39,000,000
Additional Investments and Derivative Instruments (Textual) [Abstract]
Gross gains and losses on sales and impairments previously reported as unrealized losses in AOCI	0		1,600,000,000
Proceeds from sales of AFS securities	8,600,000,000		8,700,000,000
Number of securities included in AFS securities in an unrealized loss position, primarily related to municipal securities	2,713
Percentage of gross unrealized losses depressed	94.00%
Securities Depressed to Cost or Amortized Cost Lower Limit	20.00%
Number of years to maturity for securities concentrated in the financial services sector	10 years
Valuation allowances on mortgage loans held for sale	1,000,000				3,000,000
Mortgage loans held for sale, carrying value	48,000,000				61,000,000
Current weighted average loan to value ratio of commercial mortgage loan	58.00%
Original weighted average loan to value ratio of commercial mortgage loan	63.00%
Avg. Debt-Service Coverage Ratio	2.35
Deferred net gains on derivative instruments before tax to be reclassified to earnings during next twelve months	78,000,000
Maximum Term Over for Hedging Exposure to Variability of Future Cash Flows	2 years
Derivative fair value reported as liabilities	900,000,000				1,300,000,000
Policyholder Behavior Assumptions [Member]
Gain (loss) on derivative, net	0		1,000,000
International Program Hedging Instruments [Member]
Derivative Asset, Fair Value, Gross Asset	542,000,000				866,000,000
Notional amount	61,528,000,000				73,048,000,000
Retirement Plans and Individual Life Businesses [Member]
Net realized capital gains (losses), excluding net OTTI losses recognized in earnings			1,500,000,000
Gain (loss) on derivative instruments, net, pretax	71,000,000
Fixed Maturities [Member]
Security Owned and Pledged as Collateral, Fair Value	1,100,000,000				1,300,000,000
Other Investments [Member]
Derivative Asset, Fair Value, Gross Asset	1,488,000,000				1,845,000,000
Derivative Asset, Fair Value, Gross Liability	1,212,000,000				1,463,000,000
Derivative Assets	249,000,000	[1]			442,000,000	[1]
Derivative, Collateral, Obligation to Return Cash	(27,000,000)	[2]			(60,000,000)	[2]
Derivative Asset, Fair Value of Collateral	184,000,000	[3]			242,000,000	[3]
Derivative Asset, Fair Value, Amount Offset Against Collateral	92,000,000				140,000,000
Interest Rate Swap [Member]
Notional amount	6,900,000,000
JAPAN
Foreign Currency Transaction Gain (Loss), before Tax	(11,000,000)		134,000,000
JAPAN | Fixed Annuity Hedging Instruments [Member]
Gain (loss) on derivative, net	12,000,000	[4]	(101,000,000)	[4]
FX revaluation - Japan fixed annuity product [Member] | JAPAN | Fixed Annuity Hedging Instruments [Member]
Foreign Currency Transaction Gain (Loss), before Tax	$ (30,000,000)		$ 151,000,000

[1] cluded in other invested assets in the Company's Condensed Consolidated Balance Sheets.[

[2] cluded in other assets in the Company's Condensed Consolidated Balance Sheets and is limited to the net derivative receivable associated with each counterparty.[

[3] cludes collateral associated with exchange-traded derivative instruments.C

[4] he associated liability is adjusted for changes in foreign exchange spot rates through realized capital gains and was $(30) and $151 for the three months ended March 31, 2014 and 2013, respectively. [