RESTRUCTURING AND ASSET RELATED CHARGES - NET - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2020	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ 15	$ 79	$ 3
2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 13
2020 Restructuring Program [Member] | Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	8		8
2020 Restructuring Program [Member] | Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	1		1
Employee Severance [Member] | 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	9
Asset write-downs and write-offs [Member] | 2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 4
2017 Restructuring [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			2	4	$ 3
Payments for Restructuring			$ (19)	(16)
Restructuring Reserve				1
Fair Value, Nonrecurring [Member] | Manufacturing Assets [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges		$ 75		$ 75