DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Financial Instrument Recognized in the Consolidated Balance sheet (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Foreign Currency Note Payable, Noncurrent, after-tax	$ 90	$ 88
Foreign Currency Note Payable, Noncurrent, pre-tax	$ 634	652
Derivatives not designated as hedges
Percentage of intercompany balance sheet exposure	100.00%
Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	$ 13	8
Derivatives not designated as hedges
Derivative instruments not designated as hedging instruments, asset, at fair value	33	40
Other noncurrent assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	23	48
Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	19	22
Derivatives not designated as hedges
Derivative instruments not designated as hedging instruments, liability, at fair value	135	19
Other noncurrent liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	55	19
Currency exchange contracts [Member] \| Other current assets [Member]
Derivatives not designated as hedges
Derivative instruments not designated as hedging instruments, asset, at fair value	33	39
Currency exchange contracts [Member] \| Other current liabilities [Member]
Derivatives not designated as hedges
Derivative instruments not designated as hedging instruments, liability, at fair value	135	19
Commodity contracts [Member] \| Other current assets [Member]
Derivatives not designated as hedges
Derivative instruments not designated as hedging instruments, asset, at fair value	0	1
Commodity contracts [Member] \| Other current liabilities [Member]
Derivatives not designated as hedges
Derivative instruments not designated as hedging instruments, liability, at fair value	0	0
Derivatives designated as hedges [Member] \| Fair value hedging [Member] \| Fixed-to-floating interest rate swaps [Member]
Derivatives designated as hedges
Notional amount	2,550	2,965
Derivatives designated as hedges [Member] \| Fair value hedging [Member] \| Fixed-to-floating interest rate swaps [Member] \| Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	0	1
Derivatives designated as hedges [Member] \| Fair value hedging [Member] \| Fixed-to-floating interest rate swaps [Member] \| Other noncurrent assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	18	41
Derivatives designated as hedges [Member] \| Fair value hedging [Member] \| Fixed-to-floating interest rate swaps [Member] \| Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	1	0
Derivatives designated as hedges [Member] \| Fair value hedging [Member] \| Fixed-to-floating interest rate swaps [Member] \| Other noncurrent liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	51	17
Derivatives designated as hedges [Member] \| Cash Flow Hedging [Member] \| Currency exchange contracts [Member]
Derivatives designated as hedges
Notional amount	950	924
Derivatives designated as hedges [Member] \| Cash Flow Hedging [Member] \| Currency exchange contracts [Member] \| Other current assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	13	7
Derivatives designated as hedges [Member] \| Cash Flow Hedging [Member] \| Currency exchange contracts [Member] \| Other noncurrent assets [Member]
Derivatives designated as hedges
Derivative asset designated as hedging instrument	5	7
Derivatives designated as hedges [Member] \| Cash Flow Hedging [Member] \| Currency exchange contracts [Member] \| Other current liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	18	22
Derivatives designated as hedges [Member] \| Cash Flow Hedging [Member] \| Currency exchange contracts [Member] \| Other noncurrent liabilities [Member]
Derivatives designated as hedges
Derivative liability designated as hedging instrument	4	2
Derivatives not designated as hedges [Member] \| Currency exchange contracts [Member]
Derivatives designated as hedges
Notional amount	6,033	3,719
Derivatives not designated as hedges [Member] \| Commodity contracts [Member]
Derivatives designated as hedges
Notional amount	$ 11	$ 13
Minimum [Member] \| Derivatives designated as hedges [Member] \| Fair value hedging [Member] \| Fixed-to-floating interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	9 months	6 months
Minimum [Member] \| Derivatives designated as hedges [Member] \| Cash Flow Hedging [Member] \| Currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	1 month	1 month
Minimum [Member] \| Derivatives not designated as hedges [Member] \| Currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	1 month	1 month
Minimum [Member] \| Derivatives not designated as hedges [Member] \| Commodity contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	1 month	1 month
Maximum [Member] \| Derivatives designated as hedges [Member] \| Fair value hedging [Member] \| Fixed-to-floating interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	16 years	17 years
Maximum [Member] \| Derivatives designated as hedges [Member] \| Cash Flow Hedging [Member] \| Currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	36 months	36 months
Maximum [Member] \| Derivatives not designated as hedges [Member] \| Currency exchange contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	12 months	12 months
Maximum [Member] \| Derivatives not designated as hedges [Member] \| Commodity contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative, term of contract	12 months	12 months

Derivatives designated as hedges.

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Derivatives not designated as hedges.

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No definition available.

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- Definition

Foreign Currency Note Payable, Noncurrent, after-tax - Foreign currency denominated debt designated as a non-derivative net investment hedging instrument on an after-tax basis.

+ References

No definition available.

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Foreign Currency Note Payable, Noncurrent, pre-tax - Foreign currency denominated debt designated as non-derivative net investment hedging instrument on a pre-tax basis.

+ References

No definition available.

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- Definition

Percentage of intercompany balance sheet exposure.

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No definition available.

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- Definition

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

+ References

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

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 815
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-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313

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Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959

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- Definition

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability.

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

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.

+ References

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