REVENUE (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from External Customer [Line Items]
Contract with Customer, Liability, Revenue Recognized	$ 250	$ 295	$ 145
Contract with Customer, Asset, Reclassified to Receivable	15	35
Trade (net of allowance for doubtful receivables - 2022: $110; 2021: $54)	5,611	6,841
Contract assets - current	48	34
Contract assets - noncurrent	16	26
Contract liabilities - current	275	209
Contract liabilities - noncurrent	1,725	1,925
The Dow Chemical Company
Revenue from External Customer [Line Items]
Trade (net of allowance for doubtful receivables - 2022: $110; 2021: $54)	5,611	6,841
U.S.& Canada [Member]
Revenue from External Customer [Line Items]
Revenues	20,945	19,613	13,582
Europe, Middle East, Africa and India
Revenue from External Customer [Line Items]
Revenues	19,631	19,746	12,969
Asia Pacific [Member]
Revenue from External Customer [Line Items]
Revenues	10,344	10,043	8,165
Latin America [Member]
Revenue from External Customer [Line Items]
Revenues	5,982	5,566	3,826
Corporate Segment [Member]
Revenue from External Customer [Line Items]
Revenues	272	317	269
Hydrocarbons & Energy [Member] | Packaging & Specialty Plastics [Member] [Domain]
Revenue from External Customer [Line Items]
Revenues	9,414	8,149	4,271
Packaging and Specialty Plastics [Member] | Packaging & Specialty Plastics [Member] [Domain]
Revenue from External Customer [Line Items]
Revenues	19,846	19,979	14,030
Industrial Solutions [Member] | Industrial Intermediates & Infrastructure [Member]
Revenue from External Customer [Line Items]
Revenues	5,682	5,139	3,929
Polyurethanes & Construction Chemicals | Industrial Intermediates & Infrastructure [Member]
Revenue from External Customer [Line Items]
Revenues	10,907	11,700	8,080
Other [Member] | Industrial Intermediates & Infrastructure [Member]
Revenue from External Customer [Line Items]
Revenues	17	12	12
Coatings and Performance Monomers [Member] | Performance Materials & Coatings [Member]
Revenue from External Customer [Line Items]
Revenues	4,051	4,050	3,258
Consumer Solutions [Member] | Performance Materials & Coatings [Member]
Revenue from External Customer [Line Items]
Revenues	$ 6,713	$ 5,622	$ 4,693
Maximum
Revenue from External Customer [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	18 years
Product
Revenue from External Customer [Line Items]
Revenue, Percentage from Products and Service Transferred to Customers	99.00%	99.00%	99.00%
Licensing of Technology
Revenue from External Customer [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 840	$ 829