COMMITMENTS AND CONTINGENT LIABILITIES (Guarantees) (Table and Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Mar. 31, 2017	Dec. 31, 2016
Guarantees [Member]
Guarantor Obligations [Line Items]
Final expiration	2021	2021
Guarantor obligations, maximum future payments	$ 5,102	$ 5,096
Guarantor obligations, recorded liability	$ 57	$ 86
Residual Value Guarantees [Member]
Guarantor Obligations [Line Items]
Final expiration	2027	2027
Guarantor obligations, maximum future payments	$ 951	$ 947
Guarantor obligations, recorded liability	132	134
Total Guarantees [Member]
Guarantor Obligations [Line Items]
Guarantor obligations, maximum future payments	6,053	6,043
Guarantor obligations, recorded liability	$ 189	220
Sadara [Member]
Guarantor Obligations [Line Items]
Equity Method Investment, Ownership Percentage	35.00%
Sadara [Member] \| Guarantee of Indebtedness of Others [Member]
Guarantor Obligations [Line Items]
Guarantor obligations, maximum future payments	$ 4,400
Total Project Financing [Member] \| Sadara [Member] \| Long Term Debt entered into by Equity Method Investee
Guarantor Obligations [Line Items]
Project Financing, Maximum Borrowing Capacity	12,500
Construction Loans [Member] \| Sadara [Member] \| Long Term Debt entered into by Equity Method Investee
Guarantor Obligations [Line Items]
Amount Drawn, Total Project Financing	$ 12,400	$ 12,400

Amount Drawn, Total Project Financing

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- Definition

Final expiration year of guarantees of the reporting entity.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under project financing facility for Sadara project.

+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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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

No definition available.

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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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