REPOSITIONING AND OTHER CHARGES 4 (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) Employees	Dec. 31, 2019 USD ($) Employees	Dec. 31, 2018 USD ($) Employees	Dec. 31, 2017 USD ($)
Net Repositioning And Other Charges [Line Items]
Restructuring Reserve	$ 601,000,000	$ 651,000,000	$ 566,000,000	$ 513,000,000
Repositioning Charges	565,000,000	438,000,000	530,000,000
Usage - cash	(564,000,000)	(249,000,000)	(285,000,000)
Usage - noncash	(21,000,000)	(100,000,000)	(163,000,000)
Divestitures	0	0	(14,000,000)
Adjustments	(47,000,000)	(5,000,000)	(10,000,000)
Foreign currency translation	(17,000,000)	(1,000,000)	5,000,000
Restructuring and Related Cost, Incurred Cost	518,000,000	433,000,000	520,000,000
Net repositioning and other charges Paragraph Details [Abstract]
Repositioning Charges	$ 565,000,000	$ 438,000,000	$ 530,000,000
Number Of Employees Severed | Employees	14,159	5,336	6,486
Severance [Member]
Net Repositioning And Other Charges [Line Items]
Restructuring Reserve	$ 527,000,000	$ 555,000,000	$ 489,000,000	442,000,000
Repositioning Charges	475,000,000	260,000,000	289,000,000
Usage - cash	(474,000,000)	(186,000,000)	(218,000,000)
Usage - noncash	0	0	0
Divestitures	0	0	(11,000,000)
Adjustments	(44,000,000)	(8,000,000)	(8,000,000)
Foreign currency translation	(15,000,000)	0	5,000,000
Restructuring and Related Cost, Incurred Cost	475,000,000	260,000,000	289,000,000
Net repositioning and other charges Paragraph Details [Abstract]
Repositioning Charges	475,000,000	260,000,000	289,000,000
Asset Impairments [Member]
Net Repositioning And Other Charges [Line Items]
Restructuring Reserve	0	0	0	0
Repositioning Charges	21,000,000	95,000,000	162,000,000
Usage - cash	0	0	0
Usage - noncash	(21,000,000)	(100,000,000)	(163,000,000)
Divestitures	0	0	0
Adjustments	0	5,000,000	1,000,000
Foreign currency translation	0	0	0
Restructuring and Related Cost, Incurred Cost	21,000,000	95,000,000	162,000,000
Net repositioning and other charges Paragraph Details [Abstract]
Repositioning Charges	21,000,000	95,000,000	162,000,000
Exit costs [Member]
Net Repositioning And Other Charges [Line Items]
Restructuring Reserve	74,000,000	96,000,000	77,000,000	$ 71,000,000
Repositioning Charges	69,000,000	83,000,000	79,000,000
Usage - cash	(90,000,000)	(63,000,000)	(67,000,000)
Usage - noncash	0	0	0
Divestitures	0	0	(3,000,000)
Adjustments	(3,000,000)	(2,000,000)	(3,000,000)
Foreign currency translation	(2,000,000)	(1,000,000)	0
Restructuring and Related Cost, Incurred Cost	69,000,000	83,000,000	79,000,000
Net repositioning and other charges Paragraph Details [Abstract]
Repositioning Charges	$ 69,000,000	$ 83,000,000	$ 79,000,000