Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

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- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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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.

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- Definition

The estimated net amount of unrealized gains or losses on foreign currency cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
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- Definition

Amount of unrealized gain (loss) included in earnings related to the fair value of the hedged item in an interest rate fair value hedge, offset by the gain (loss) on the hedging instrument to the extent that the fair value hedge is determined to be effective.

+ 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 (a)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-Section 50
-Paragraph 4A
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- Definition

Amount of unrealized gain (loss) related to the fair value of interest rate derivatives designated as fair value hedging instruments, as offset by the gain (loss) on the hedged item to the extent that the fair value hedge is determined to be effective.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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- Definition

Maximum period of time the entity is hedging its exposure to variability in future cash flows for forecasted transactions, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Excludes forecasted transactions related to payment of variable interest on existing financial instruments.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (d)
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Derivative instruments (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Derivative Instruments Gain Loss [Line Items]
Length of time hedged in foreign currency contracts			3 years
Interest expense, net [Member]
Derivative Instruments Gain Loss [Line Items]
Unrealized gain (loss) on the hedged debt	$ (49)	$ 83	$ (198)	$ (6)
Unrealized gain (loss) on interest rate swaps	49	$ (83)	198	$ 6
Foreign currency forward contracts [Member] \| Derivatives designated as hedging instrument [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative, notional amount	3,500		3,500		$ 3,300
Foreign currency forward contracts [Member] \| Derivatives not designated as hedging instrument [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative, notional amount	727		727		911
Foreign currency option contracts [Member] \| Derivatives designated as hedging instrument [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative, notional amount	225		225		225
Forward interest rate contracts [Member]
Derivative Instruments Gain Loss [Line Items]
Amounts expected to be reclassified from AOCI into earnings over the next 12 months	(1)		(1)
Forward interest rate contracts [Member] \| Cash flow hedge [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative, notional amount	500		500
Foreign currency and cross currency swap contracts [Member]
Derivative Instruments Gain Loss [Line Items]
Amounts expected to be reclassified from AOCI into earnings over the next 12 months	124		124
Interest rate swap [Member] \| Derivatives designated as hedging instrument [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative, notional amount	$ 6,650		$ 6,650		$ 6,650
Rate adjustment to LIBOR on interest rate swap agreements [Member] \| LIBOR [Member] \| Minimum [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative, variable interest rate	0.40%		0.40%
Rate adjustment to LIBOR on interest rate swap agreements [Member] \| LIBOR [Member] \| Maximum [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative, variable interest rate	2.00%		2.00%