REPOSITIONING AND OTHER CHARGES 4 (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($) employee	Jun. 30, 2018 USD ($) employee	Jun. 30, 2019 USD ($) employee	Jun. 30, 2018 USD ($) employee
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 84,000,000	$ 61,000,000	$ 142,000,000	$ 146,000,000
Net repositioning and other charges Paragraph Details [Abstract]
Gross Repositioning Charge	$ 86,000,000	$ 63,000,000	$ 146,000,000	$ 149,000,000
Number of employees severed | employee	1,266	731	2,313	1,884
Severance
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 75,000,000	$ 30,000,000	$ 106,000,000	$ 61,000,000
Asset impairments
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	0	1,000,000	11,000,000	48,000,000
Exit costs
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	11,000,000	32,000,000	29,000,000	40,000,000
Reserve adjustments
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ (2,000,000)	$ (2,000,000)	$ (4,000,000)	$ (3,000,000)