Investments (Details 29) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Trading securities portfolio
Actively traded securities	$ 560	$ 463
FVO general account securities	303	131
FVO contractholder-directed unit-linked investments	18,690	17,794
FVO securities held by consolidated securitization entities	147	201
Trading and other securities, at estimated fair value (includes $560 and $463, respectively, of actively traded securities; and $359 and $387, respectively, relating to variable interest entities)	19,700	18,589
Short sale agreement liabilities at estimated fair value	(54)	(46)
Net long/short position - at estimated fair value	506	417
Short sale agreements [Member]
Assets pledged as collateral:
Investments pledged to secure short sale agreement liabilities	$ 568	$ 465

Assets Pledged As Collateral Abstract.

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This caption presents contractholder-directed unit-linked investments supporting unit-linked variable annuity type liabilities that do not qualify for presentation as separate account summary total assets and liabilities.

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This caption presents debt and equity securities at fair value held for investment by the general account to support asset and liability matching strategies for certain insurance products.

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This caption presents the net long/short position of actively traded securities and short sale liabilities at estimated fair value.

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This caption presents short sale agreement liabilities at estimated fair value that are included in other liabilities.

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This caption presents the total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition. Such financial instruments that are held as of the reporting date are measured at fair value with unrealized holding gains and losses (the difference between fair value and the previously reported carrying amount) included in earnings.

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Trading Securities Held By Consolidated Securization Entities Estimated Fair Value.

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Trading securities portfolio.

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The fair value, as of the date of each statement of financial position presented, of securities that are restricted as collateral for the payment of other debt obligations, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 140
-Paragraph 15
-Subparagraph a

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The total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition; this is the reason why the trading category of investments in debt and equity securities are bought and sold "principally" for sale in the near term. Transfers into and out of the trading category should be rare. Such financial instruments that are held as of the reporting date are measured at fair value with unrealized holding gains and losses (the difference between fair value and the previously reported carrying amount) included in earnings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 159
-Paragraph 29

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 13

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Implementation Guide (Q and A)
-Number FAS115
-Paragraph 35

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 115
-Paragraph 12
-Subparagraph a

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