Intangible Assets (Estimated VOBA Amortization Expense For The Next Five Years) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011
Intangible Assets [Abstract]
2012	$ 96
2013	86
2014	77
2015	70
2016	65
Total	$ 394

The aggregate estimated amortization expense for succeeding fiscal years for intangible assets subject to amortization.

No definition available.

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- Definition

Estimated amount of the remaining balance as of the most recent fiscal year-end of the intangible assets arising from insurance contracts acquired in a business combination to be reduced through amortization in the first year following that balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 20

-Section S99

-Paragraph 2

-Subparagraph (3)

-URI http://asc.fasb.org/extlink&oid=6784649&loc=d3e569990-122904

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