RESTRUCTURING, GOODWILL IMPAIRMENT AND ASSET RELATED CHARGES - NET (2020 Restructuring Program) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended	12 Months Ended			15 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2021	Sep. 29, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net						$ 6	$ 708	$ 3,219
Restructuring Charges						69	718	3,219
Packaging & Specialty Plastics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net						8	30	439
Restructuring Charges						8	30	439
Industrial Intermediates & Infrastructure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net						1	22	1,175
Restructuring Charges						1	22	1,175
Performance Materials & Coatings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net						10	192	1,076
Restructuring Charges						10	192	1,076
Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net						(13)	464	529
Restructuring Charges						50	474	$ 529
2020 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
restructuring and related cost, percentage										6.00%
Restructuring, goodwill impairment and asset related charges - net		$ 573		$ 575
Restructuring Reserve, Accrual Adjustment						12
Restructuring Reserve, Settled without Cash		(201)				(12)
Payments for Restructuring		(8)				(196)
Restructuring Reserve	$ 168	364	$ 364		$ 364	168	364		$ 168
Restructuring Charges									585
2020 Restructuring Program [Member] | Accrued and Other Current Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	112	227	227		227	112	227		112
2020 Restructuring Program [Member] | Other Noncurrent Obligations
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	56	137	137		137	56	137		56
2020 Restructuring Program [Member] | Packaging & Specialty Plastics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		11
Restructuring Reserve, Accrual Adjustment						8
2020 Restructuring Program [Member] | Industrial Intermediates & Infrastructure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		22
Restructuring Reserve, Accrual Adjustment						1
2020 Restructuring Program [Member] | Performance Materials & Coatings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		177
Restructuring Reserve, Accrual Adjustment						10
2020 Restructuring Program [Member] | Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		363
Restructuring Reserve, Accrual Adjustment						(7)
2020 Restructuring Program [Member] | Asset Write-downs and Write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		196		197			196
Restructuring Reserve, Accrual Adjustment			(1)			12
Restructuring Reserve, Settled without Cash					(196)	(12)
Payments for Restructuring					0	0
Restructuring Reserve	0	0	0		0	0	0		0
Restructuring Charges									208
2020 Restructuring Program [Member] | Asset Write-downs and Write-offs | Packaging & Specialty Plastics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		11					11
Restructuring Reserve, Accrual Adjustment						0
2020 Restructuring Program [Member] | Asset Write-downs and Write-offs | Industrial Intermediates & Infrastructure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		22					22
Restructuring Reserve, Accrual Adjustment						1
2020 Restructuring Program [Member] | Asset Write-downs and Write-offs | Performance Materials & Coatings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		116					116
Restructuring Reserve, Accrual Adjustment						8
2020 Restructuring Program [Member] | Asset Write-downs and Write-offs | Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		47					47
Restructuring Reserve, Accrual Adjustment						3
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		80		81
Restructuring Reserve, Accrual Adjustment			(1)			10
Restructuring Reserve, Settled without Cash					(5)	0
Payments for Restructuring		0				(21)
Restructuring Reserve	64	75	75		75	64	75		64
Restructuring Charges									90
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		19
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Environmental Remediation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		56
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Packaging & Specialty Plastics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		0
Restructuring Reserve, Accrual Adjustment						8
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Industrial Intermediates & Infrastructure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		0
Restructuring Reserve, Accrual Adjustment						0
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Performance Materials & Coatings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		61
Restructuring Reserve, Accrual Adjustment						2
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Performance Materials & Coatings [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		9
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Performance Materials & Coatings [Member] | Environmental Remediation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		52
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		19
Restructuring Reserve, Accrual Adjustment						0
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Corporate Segment [Member] | Contract Termination [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		10
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Corporate Segment [Member] | Environmental Remediation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		4
2020 Restructuring Program [Member] | Costs Associated with Exit and Disposal Activities [Member] | Corporate Segment [Member] | Pension Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net					5
2020 Restructuring Program [Member] | Severance and Related Benefit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		297		$ 297
Restructuring Reserve, Accrual Adjustment	(10)					(10)
Restructuring Reserve, Settled without Cash					0	0
Payments for Restructuring					(8)	(175)
Restructuring Reserve	$ 104	289	$ 289		$ 289	104	$ 289		104
Restructuring Charges									$ 287
2020 Restructuring Program [Member] | Severance and Related Benefit Costs | Packaging & Specialty Plastics [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		0
Restructuring Reserve, Accrual Adjustment						0
2020 Restructuring Program [Member] | Severance and Related Benefit Costs | Industrial Intermediates & Infrastructure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		0
Restructuring Reserve, Accrual Adjustment						0
2020 Restructuring Program [Member] | Severance and Related Benefit Costs | Performance Materials & Coatings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		0
Restructuring Reserve, Accrual Adjustment						0
2020 Restructuring Program [Member] | Severance and Related Benefit Costs | Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring, goodwill impairment and asset related charges - net		$ 297
Restructuring Reserve, Accrual Adjustment						$ (10)