Derivative Financial Instruments - Schedule of The Effect of Derivative Instruments on the Consolidated Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivatives designated as hedging instruments \| Derivatives in net investment hedging relationships \| Interest Rate Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Foreign currency translation adjustment in the consolidated statements of comprehensive income (loss) (effective portion)	$ 0	$ 0	$ 0	$ 0
Derivatives designated as hedging instruments \| Derivatives in net investment hedging relationships \| Foreign Exchange Contracts
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Foreign currency translation adjustment in the consolidated statements of comprehensive income (loss) (effective portion)	30	(35)	22	32
Derivatives not designated as hedging instruments \| Interest Rate Contracts \| Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Other income (expense) in the consolidated statements of operations	(1)	(13)	(5)	(18)
Derivatives not designated as hedging instruments \| Foreign Exchange Contracts \| Other income (expense)
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Other income (expense) in the consolidated statements of operations	$ 0	$ (1)	$ 0	$ 2

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

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