RESTRUCTURING, GOODWILL IMPAIRMENT AND ASSET RELATED CHARGES - NET (DowDuPont Cost Synergy Program) (Details) - USD ($) $ in Millions	12 Months Ended			52 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2021	Nov. 01, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 69	$ 718	$ 3,219
Industrial Intermediates & Infrastructure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1	22	1,175
Performance Materials & Coatings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	10	192	1,076
Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	50	474	529
DowDuPont Cost Synergy Program
Restructuring Cost and Reserve [Line Items]
Expected cost					$ 1,300
Restructuring Reserve, Accrual Adjustment			292
Restructuring Charges				$ 955
DowDuPont Cost Synergy Program | Accrued and Other Current Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	4	21		4
DowDuPont Cost Synergy Program | Other Noncurrent Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	10	13		10
DowDuPont Cost Synergy Program | Severance and Related Benefit Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment	(6)	86	123
Restructuring Charges				647
DowDuPont Cost Synergy Program | Severance and Related Benefit Costs | Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost					525
DowDuPont Cost Synergy Program | Severance and Related Benefit Costs | Maximum
Restructuring Cost and Reserve [Line Items]
Expected cost					575
DowDuPont Cost Synergy Program | Asset Write-downs and Write-offs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			143
Restructuring Charges				263
DowDuPont Cost Synergy Program | Asset Write-downs and Write-offs | Industrial Intermediates & Infrastructure [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			2
DowDuPont Cost Synergy Program | Asset Write-downs and Write-offs | Performance Materials & Coatings [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			28
DowDuPont Cost Synergy Program | Asset Write-downs and Write-offs | Corporate Segment [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment			113
DowDuPont Cost Synergy Program | Asset Write-downs and Write-offs | Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost					400
DowDuPont Cost Synergy Program | Asset Write-downs and Write-offs | Maximum
Restructuring Cost and Reserve [Line Items]
Expected cost					440
DowDuPont Cost Synergy Program | Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment	$ 0	$ 0	$ 26
Restructuring Charges				$ 45
DowDuPont Cost Synergy Program | Costs Associated with Exit and Disposal Activities [Member] | Minimum
Restructuring Cost and Reserve [Line Items]
Expected cost					290
DowDuPont Cost Synergy Program | Costs Associated with Exit and Disposal Activities [Member] | Maximum
Restructuring Cost and Reserve [Line Items]
Expected cost					$ 310