Goodwill and Intangible Assets, Net - Components of Intangible Assets with Definite Lives (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	6 years 9 months 18 days
Gross Carrying Amount	$ 202	$ 36
Accumulated Amortization	(18)	(14)
Intangible assets with definite lives, net	184us-gaap_FiniteLivedIntangibleAssetsNet	22us-gaap_FiniteLivedIntangibleAssetsNet
Trade Names and Trademarks
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	9 years 4 months 24 days
Gross Carrying Amount	52	18
Accumulated Amortization	(5)	(7)
Intangible assets with definite lives, net	47	11
Customer Lists and Supplier Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	6 years 9 months 18 days
Gross Carrying Amount	77
Accumulated Amortization	(5)
Intangible assets with definite lives, net	72
Subscriber Relationships
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	4 years 8 months 12 days
Gross Carrying Amount	31	14
Accumulated Amortization	(4)	(6)
Intangible assets with definite lives, net	27	8
Technology and Other
Finite Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	5 years
Gross Carrying Amount	42	4
Accumulated Amortization	(4)	(1)
Intangible assets with definite lives, net	$ 38	$ 3

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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