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REPOSITIONING AND OTHER CHARGES 4 (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
USD ($)
Employees
Sep. 30, 2017
USD ($)
Employees
Sep. 30, 2018
USD ($)
Employees
Sep. 30, 2017
USD ($)
Employees
Net Repositioning And Other Charges [Line Items]        
Restructuring and Related Cost, Incurred Cost $ 74 $ 101 $ 220 $ 247
Net repositioning and other charges Paragraph Details [Abstract]        
Gross Repositioning Charge $ 73 $ 108 $ 222 $ 254
Number of employees severed | Employees 816 1,700 2,700 4,224
Severance Costs [Member]        
Net Repositioning And Other Charges [Line Items]        
Restructuring and Related Cost, Incurred Cost $ 39 $ 75 $ 100 $ 177
Tangible And Intangible Asset Impairment [Member]        
Net Repositioning And Other Charges [Line Items]        
Restructuring and Related Cost, Incurred Cost 26 22 74 57
Exit Costs [Member]        
Net Repositioning And Other Charges [Line Items]        
Restructuring and Related Cost, Incurred Cost 8 11 48 20
Restructuring Reserve Accrual Adjustments [Member]        
Net Repositioning And Other Charges [Line Items]        
Restructuring and Related Cost, Incurred Cost $ 1 $ (7) $ (2) $ (7)