BUSINESS OPTIMIZATION CHARGES - Components of Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 32	$ 26	$ 67	$ 58
COGS
Restructuring Cost and Reserve [Line Items]
Restructuring charges	22	5	51	20
SG&A
Restructuring Cost and Reserve [Line Items]
Restructuring charges	10	20	16	39
R&D
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	0	(1)
Employee termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	19	20	49	42
Employee termination costs | COGS
Restructuring Cost and Reserve [Line Items]
Restructuring charges	11	4	35	9
Employee termination costs | SG&A
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8	15	14	34
Employee termination costs | R&D
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	0	(1)
Contract termination and other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	4	2	6
Contract termination and other costs | COGS
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	1	0	3
Contract termination and other costs | SG&A
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	3	2	3
Contract termination and other costs | R&D
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	0	0
Asset impairments
Restructuring Cost and Reserve [Line Items]
Restructuring charges	11	2	16	10
Asset impairments | COGS
Restructuring Cost and Reserve [Line Items]
Restructuring charges	11	0	16	8
Asset impairments | SG&A
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	2	0	2
Asset impairments | R&D
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 0	$ 0	$ 0