REPOSITIONING AND OTHER CHARGES 4 (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) Employees	Dec. 31, 2017 USD ($) Employees	Dec. 31, 2016 USD ($) Employees
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 520	$ 491	$ 260
Net repositioning and other charges Paragraph Details [Abstract]
Gross Repositioning Charge	$ 530	$ 507	$ 369
Number Of Employees Severed | Employees	6,486	7,096	6,585
Severance Costs [Member]
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 289	$ 305	$ 283
Tangible And Intangible Asset Impairments [Member]
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	162	142	43
Exit Costs [Member]
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	79	60	43
Reserve Adjustments [Member]
Net Repositioning And Other Charges [Line Items]
Restructuring and Related Cost, Incurred Cost	$ (10)	$ (16)	$ (109)