Investments.

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- Definition

Mortgage backed securities average useful life.

+ Details

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- Definition

Non-credit related portion of other-than-temporary impairment charges taken for securities still owned.

+ Details

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- Definition

Number of Available For Sale Securities In An Unrealized Loss Position.

+ Details

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- Definition

Number Of Residential Mbs That Have Been In Unrealized Loss Position For 12 Months Or More.

+ Details

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- Definition

Percentage (based on fair value) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade.

+ Details

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- Definition

Percentage based on unrealized loss of available for sale fixed maturities that are in an unrealized loss position and rated investment grade.

+ Details

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- Definition

Percentage Of Gross Unrealized Loss On Available For Sale Fixed Maturity.

+ Details

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- Definition

Realized gain (loss) from mark to market of certain mortgage backed securities.

+ Details

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- Definition

Rmbs Unrealized Losses For 12 Months Or More As Percentage Of Available For Sale Fixed Maturity Unrealized Losses For 12 Months Or More.

+ Details

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- Definition

This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

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- Definition

The amount of other than temporary impairment losses on investments in debt and equity securities categorized as Available-for-sale which have been recognized in earnings during the period. Such impairment losses consist of other than temporary impairments (OTTI) on equity securities, credit losses on investments in debt securities, and when the entity intends to sell an impaired debt security or it is more likely than not that the entity will be required to sell the impaired debt security before recovery of its amortized cost basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 7
-Footnote 2
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 15C
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Staff Position (FSP)
-Number FAS115-1/124-1
-Paragraph 15D
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Investments (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Investments (Textuals) [Abstract]
Number of available for sale securities in an unrealized loss position			900
Percentage (based on amount of unrealized loss) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade			49.00%
Percentage (based on fair value) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade			79.00%
Number of Residential MBS that have been in an unrealized loss position for 12 months or more			237
RMBS unrealized losses for 12 months or more as a percentage of total AFS fixed maturity unrealized losses for 12 months or more			90.00%
Other than temporary impairment charges	$ 21	$ 16	$ 31	$ 37
Average life of MBS			4 years
Realized gain (loss) from the mark-to-market of certain MBS	(1)	9	(3)	26
Residential Mortgage Backed Securities [Member]
Investments (Textuals) [Abstract]
Non-credit related portion of other-than-temporary impairment charges taken for securities still owned	238		238		258
Gross unrealized losses on fixed maturities	117		117		128
Percentage (based on amount of unrealized loss) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade			35.00%
Percentage (based on fair value) of available for sale fixed maturities that are in an unrealized loss position and rated investment grade			51.00%
Percentage of gross unrealized losses on the available for sale fixed maturity portfolio			73.00%
Other than temporary impairment charges			34
Commercial Mortgage Backed Securities [Member]
Investments (Textuals) [Abstract]
Gross unrealized losses on fixed maturities	2		2		2
Fixed Maturity Securities [Member]
Investments (Textuals) [Abstract]
Gross unrealized losses on fixed maturities	161		161		216
Other than temporary impairment charges	26	22	37	50
All other corporate [Member]
Investments (Textuals) [Abstract]
Gross unrealized losses on fixed maturities	0		0
Other than temporary impairment charges			$ 2