Goodwill and Intangible Assets, Net Definite-lived and Indefinite-lived Intangible Assets Table (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Definite-lived intangible assets: [Abstract]
Definite-lived intangible assets, Gross Carrying Amount	$ 1,372	$ 1,305
Definite-lived intangible assets, Accumulated Amortization	(534)	(512)
Definite-lived intangible assets, Net Carrying Value	838us-gaap_FiniteLivedIntangibleAssetsNet	793us-gaap_FiniteLivedIntangibleAssetsNet
Indefinite-lived intangible assets: [Abstract]
Indefinite-lived intangible assets, Net Carrying Value	295	295
Intangible assets, net	1,133	1,088
Trademarks and brand names
Indefinite-lived intangible assets: [Abstract]
Indefinite-lived intangible assets, Net Carrying Value	257	257
Gaming licenses
Indefinite-lived intangible assets: [Abstract]
Indefinite-lived intangible assets, Net Carrying Value	38	38
Customer relationships
Definite-lived intangible assets: [Abstract]
Definite-lived intangible assets, Gross Carrying Amount	1,006	957
Definite-lived intangible assets, Accumulated Amortization	(360)	(345)
Definite-lived intangible assets, Net Carrying Value	646	612
Developed technology
Definite-lived intangible assets: [Abstract]
Definite-lived intangible assets, Gross Carrying Amount	138	120
Definite-lived intangible assets, Accumulated Amortization	(81)	(77)
Definite-lived intangible assets, Net Carrying Value	57	43
In-place leases
Definite-lived intangible assets: [Abstract]
Definite-lived intangible assets, Gross Carrying Amount	121	121
Definite-lived intangible assets, Accumulated Amortization	(65)	(63)
Definite-lived intangible assets, Net Carrying Value	56	58
Gasification technology license
Definite-lived intangible assets: [Abstract]
Definite-lived intangible assets, Gross Carrying Amount	60	60
Definite-lived intangible assets, Accumulated Amortization	(7)	(7)
Definite-lived intangible assets, Net Carrying Value	53	53
Other
Definite-lived intangible assets: [Abstract]
Definite-lived intangible assets, Gross Carrying Amount	47	47
Definite-lived intangible assets, Accumulated Amortization	(21)	(20)
Definite-lived intangible assets, Net Carrying Value	$ 26	$ 27

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- Definition

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

+ 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)(1)

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- Definition

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

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

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ 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 (b)

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

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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