Derivative Financial Instruments (Details Textuals) (USD $) In Millions	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Derivative Financial Instruments (Textuals) [Abstract]
Maximum Amount of Future Payments under Credit Default Swaps	$ 6,490		$ 6,490		$ 5,089
Estimated Fair Value of Credit Default Swaps	58		58		62
Potential future recoveries available to offset maximum amount of future payments under credit default swaps	105		105		120
Cash collateral received for collateral arrangements and obligated to return	3,498		3,498		2,625
Fair Value of Securities Received as Collateral that Can be Resold or Repledged	1,578		1,578		984
Securities Received as Collateral, Amount Repledged and Sold			0
Estimated fair value of over-the-counter derivatives with credit-contingent provisions in gross liability position	1,034		1,034
Estimated fair value of securities collateral provided for over-the-counter derivatives with credit-contingent provisions in gross liability position	404		404
Additional Collateral Required for Derivatives in Gross Liability Position	630		630
Gross derivative asset for which the Company has the contractual right of offset	341		341
Securities owned and pledged as collateral for exchange-traded futures	40		40		40
Cash collateral owned and pledged as collateral for exchange-traded futures	518		518		662
Amount recognized in net derivatives gains (losses) on the ineffective portion of all cash flow hedges			0	0
Net amounts reclassified into net derivatives gains (losses) on discontinued cash flow hedges	(1)	0	(14)	0
Hedging exposure to variability in future cash flows for specific length of time	10 years		10 years		7 years
Cumulative foreign currency translation gain (loss) recorded in accumulated other comprehensive income (loss) for net investment in foreign operations hedges	(259)		(259)		(223)
Adjustment for nonperformance risk recorded in net derivatives gains (losses) related to guaranteed minimum benefits	108	776	34	690
Amount of cash collateral provided by Company	0		0		0
Refinement for estimating nonperformance risk in fair value measurements recorded in net derivatives gains (losses) related to guaranteed minimum benefits					(955)
Cash Flow Hedges
Cash Flow Hedges
Deferred net gains (losses) expected to be reclassified to earnings	(39)		(39)
Derivatives and non-derivative hedging instruments in net investment hedging relationships [Member]
Cash Flow Hedges
Amount and Location of Gains (Losses) Reclassified from Accumulated Other Comprehensive Income (Loss) into Income (Loss) (Effective Portion)		$ 0	$ (71)	$ 0

The aggregate fair value of additional collateral that would be required to be provided for derivative instruments that contain credit-risk-related contingent features that are in a gross liability position at the end of the reporting period in the unlikely event that both: (i) the Company's credit rating is downgraded to a level that triggers full overnight collateralization or termination of all derivative positions; and (ii) the Company's netting agreements are deemed to be legally unenforceable.

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- Definition

This item represents the adjustment for nonperformance risk recorded in net derivatives gains (losses) related to guaranteed minimum benefits.

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Amount And Location Of Gains Losses Reclassified From Accumulated Other Comprehensive Income Loss Into Income Loss Effective Portion On Net Investment In Foreign Operation Hedges.

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- Definition

This amount represents the gains or (losses) recognized in net derivatives gains (losses) related to the ineffective portion of all cash flow hedges.

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- Definition

Carrying amount as of the balance sheet date of cash collateral provided for exchange-traded futures, for which the right to reclaim the collateral is included in premiums, reinsurance and other receivables on the consolidated balance sheets.

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- Definition

The estimated fair value of cash collateral provided by the Company related to over-the-counter derivatives in a net liability position.

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- Definition

This caption represents the amount of cash collateral received by the Company under collateral arrangements in connection with its derivative instruments and for which the Company was obligated to return.

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- Definition

Cash Flow Hedges

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- Definition

This caption represents the maximum amount of potential future recoveries related to purchased protection credit default swaps available to offset the maximum amount of potential future exposure on written credit default swaps on identical referenced entities.

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- Definition

Cumulative foreign currency translation gain (loss) recorded in accumulated other comprehensive income (loss) related to hedges of net investments in foreign operations.

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- Definition

The amount of deferred net gains (losses) on cash flow hedges expected to be reclassified in the next 12 months to earnings from accumulated other comprehensive income.

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Derivative Financial Instruments Textuals Abstract.

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- Definition

Estimated Fair Value of Collateral Provided for OTC Derivatives With Credit Contingent Provisions in Gross Liability Position Included in Debt Securities.

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- Definition

The fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a gross liability position at the end of the reporting period.

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- Definition

This caption presents the amount of gross derivative assets for which the Company has the contractual right of offset with respect to the gross derivative liabilities.

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- Definition

Cash flow hedges disclosure that discloses the maximum number of years the Company is hedging its exposure to variability in future cash flows for forecasted transactions.

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- Definition

The amount of net gains (losses) on discontinued cash flow hedges reclassified in the current period to net derivatives gains (losses) from accumulated other comprehensive income because the forecasted transactions did not occur on the anticipated date or within two months of that date.

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- Definition

This item represents a refinement for estimating nonperformance risk in fair value measurements recorded in net derivatives gains (losses) related to guaranteed minimum benefits.

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- Definition

The fair value as of the balance sheet date of financial securities owned by the entity and pledged to counterparties as collateral for exchange-traded futures. This collateral is included in fixed maturity securities on the consolidated balance sheets, and the counterparties are permitted by contract to sell or repledge this collateral.

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- Definition

Discloses the fair value of the credit derivative (or each group of similar credit derivatives) as of the date of the statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44DD
-Subparagraph c

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- Definition

This is the fair value as of the date of each statement of financial position presented of the collateral that is permitted by contact or custom to sell or re-pledge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph a(3)

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- Definition

Maximum amount the entity would be obligated to pay on the credit risk derivatives upon occurrence of a credit event.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 107
-Paragraph 15A, 15B, 15C, 15D

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The fair value of collateral received that has been sold or re-pledged and is owed to the transferee upon settlement of the related contractual obligation under which it was received.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS140-4 and FIN46(R)-8
-Paragraph B6
-Subparagraph c

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 17
-Subparagraph a(3)

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