REPOSITIONING AND OTHER CHARGES 4 (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) employee	Mar. 31, 2018 USD ($) employee
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 58	$ 85
Net repositioning and other charges Paragraph Details [Abstract]
Gross Repositioning Charge	$ 60	$ 86
Number of employees severed | employee	1,047	1,153
Severance
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 31	$ 31
Asset impairments
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	11	47
Exit costs
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	18	8
Reserve adjustments
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ (2)	$ (1)