SCHEDULE V - CONSOLIDATED VALUATION AND QUALIFYING ACCOUNTS (Details) (Reserve for mortgage loans on real estate [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reserve for mortgage loans on real estate [Member]
Movement in valuation allowances and reserves [Roll Forward]
Balance at Beginning -of-Year	$ 31	$ 13	$ 22
Charged to Costs Expenses	14	24	18
Charged to Other Accounts - Describe	0	0	0
Deductions - Describe	24	6	27
Balance at End-of-Year	$ 21	$ 31	$ 13

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Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 09

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690

+ Details

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- Definition

+ References

+ Details

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- Definition

+ References

+ Details

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- Definition

Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

+ References

+ Details

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