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Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Intangible Assets [Abstract]

Schedule of expected amortization expense

The estimated aggregate amortization expense for the years ending December 31, 2013 through December 31, 2017 is as follows (in millions):

	Amortization Expense
2013	$	21
2014	21
2015	21
2016	18
2017	7

X

- Definition

Tabular disclosure of the estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275

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