COMMITMENTS AND CONTINGENT LIABILITIES (Environmental Matters) (Narrative) (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Environmental Remediation Expense		$ 504	$ 218	$ 227
Capital expenditures for environmental protection		66	49	78
Accrual for Environmental Loss Contingencies [Roll Forward]
Accrued Obligations for Environmental Matters, beginning balance		670	706
Accrued Obligations for Environmental Matters, Additional accruals	$ 295	479	230
Accrued Obligations for Environmental Matters, Charges against reserve		(246)	(233)
Accrued Obligations for Environmental Matters, Foreign currency impact		6	(33)
Accrued Obligations for Environmental Matters, ending balance	909	909	$ 670	$ 706
Number of of Properties Remediated, City of Midland			132
Accrual For Environmental Loss Contingencies Superfund Sites [Member]
Accrual for Environmental Loss Contingencies [Roll Forward]
Accrued Obligations for Environmental Matters, beginning balance		74
Accrued Obligations for Environmental Matters, ending balance	151	151	$ 74
Accrual For Environmental Loss Contingencies Midland Offsite Matters [Member]
Accrual for Environmental Loss Contingencies [Roll Forward]
Accrued Obligations for Environmental Matters, beginning balance		62
Accrued Obligations for Environmental Matters, ending balance	$ 93	$ 93	$ 62