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Assets Sold under Agreements to Repurchase, Fair Value

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Available-for-sale Securities, Maturity of Securities Included in Continuous Loss Position, Minimum

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Available-for-sale securities mortgage loans average debt service coverage ratio.

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Carrying value of mortgage loans associated with the valuation allowance.

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Cash Collateral for Loaned Securities, Collateral Received as Percentage of Securities Loaned, Minimum

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Certain loans acquired in transfer held-for-sale accounted for as debt securities carrying amount net.

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Certain loans and debt securities acquired in transfer held for sale allowance for credit losses due to subsequent impairment.

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Current weighted average loan to value ratio of commercial mortgage loan.

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Financing receivable recorded investment delinquency period.

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Gross gains and losses on sales and impairments reported in AOCI.

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Amount of invested assets supporting other policyholder fund liabilities under a modified coinsurance agreement.

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Maximum gain loss on discontinuation of cash flow hedge due to forecasted transaction probable of not occurring net.

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Number of securities included in AFS securities in unrealized loss position.

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Number of years to maturity for securities concentrated in the financial services sector.

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Original weighted average loan to value ratio of commercial mortgage loan.

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Percentage of gross unrealized losses depressed less than twenty percent of cost or amortized cost.

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Percent of fair value of securities transferred for collateral obtained on repurchase agreement

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Securities depressed to cost or amortized cost lower limit.

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Securities Sold under Agreements to Repurchase, Collateral, Right to Reclaim Securities

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Securities Sold under Agreements to Repurchase, Gross

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The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any gains (losses) realized during the period from the sale of investments accounted for under the cost method of accounting.

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Aggregate notional amount of all interest rate derivatives designated as hedging instruments in fair value hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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The amount of the valuation allowance recorded as of the balance sheet date pertaining to the specified deferred tax asset for which an assessment was made that it is more likely than not that all or a portion of such deferred tax asset will not be realized through related deductions on future tax returns.

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Investments and Derivative Instruments (Details Textual 3) (USD $)	3 Months Ended		6 Months Ended		9 Months Ended
	Jun. 30, 2013 Security	Jun. 30, 2012	Jun. 30, 2013 Security	Jun. 30, 2012	Sep. 30, 2011	Dec. 31, 2012
Carrying value of mortgage loans associated with the valuation allowance	$ 128,000,000		$ 128,000,000			$ 189,000,000
Invested Assets Suppoting Modco	1,300,000,000		1,300,000,000
Net realized capital losses, excluding net OTTI losses recognized in earnings	(603,000,000)	719,000,000	(707,000,000)	(522,000,000)
Additional Investments and Derivative Instruments (Textual) [Abstract]
Gross gains and losses on sales and impairments previously reported as unrealized losses in AOCI	13,000,000	13,000,000	2,000,000	57,000,000
Proceeds from sales of AFS securities	4,000,000,000	5,600,000,000	8,800,000,000	14,200,000,000
Number of securities included in AFS securities in an unrealized loss position, primarily related to municipal securities	1,999		1,999
Percentage of gross unrealized losses depressed	93.00%		93.00%
Securities Depressed to Cost or Amortized Cost Lower Limit	20.00%		20.00%
Minimum maturity of securities included in continuous loss position			10 years
Number of years to maturity for securities concentrated in the financial services sector			10 years
Valuation allowances on mortgage loans held for sale	3,000,000		3,000,000			3,000,000
Mortgage loans held for sale, carrying value	46,000,000		46,000,000			47,000,000
Current weighted average loan to value ratio of commercial mortgage loan	57.00%		57.00%
Original weighted average loan to value ratio of commercial mortgage loan	63.00%		63.00%
Avg. Debt-Service Coverage Ratio	2.00		2.00
Collateral received as percentage of fair value of securities loaned			95.00%
Percent of fair value of securities transferred for collateral obtained on repurchase agreement			at least 95%
Fair value of securities transferred	0		0			1,600,000,000
Agreement to repurchase securities	0		0			1,600,000,000
Gross amount of recognized liability	913,000,000		913,000,000			923,000,000
Financial collateral pledged	913,000,000		913,000,000			923,000,000
Notional amount of interest rate swaps in offsetting relationships	4,500,000,000		4,500,000,000			5,100,000,000
Deferred net gains on derivative instruments before tax to be reclassified to earnings during next twelve months			53,000,000
Maximum amount of net reclassifications from AOCI to earnings				0	0
Commercial [Member]
Financing Receivable Recorded Investment Delinquency Period			90 days or more
Retirement Plans and Individual Life Businesses [Member]
Net realized capital losses, excluding net OTTI losses recognized in earnings			1,500,000,000
Gain (Loss) on Derivative Instruments, Net, Pretax			100,000,000
Commercial [Member]
Carrying value of mortgage loans associated with the valuation allowance	4		4
Valuation Allowance, Amount	$ 1		$ 1
Additional Investments and Derivative Instruments (Textual) [Abstract]
Avg. Debt-Service Coverage Ratio	2.00		2.00			2.34