Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 56,902	$ 54,968	$ 38,542
Cost of sales	48,338	44,191	33,346
Research and development expenses	851	857	768
Selling, general and administrative expenses	1,675	1,645	1,471
Amortization of intangibles	336	388	401
Restructuring and asset related charges - net	118	6	708
Integration and separation costs	0	0	239
Equity in earnings (losses) of nonconsolidated affiliates	268	975	(18)
Sundry income (expense) - net	727	(35)	1,269
Interest income	173	55	38
Interest expense and amortization of debt discount	662	731	827
Income before income taxes	6,090	8,145	2,071
Provision for income taxes	1,450	1,740	777
Net income (loss)	4,640	6,405	1,294
Net income attributable to noncontrolling interests	58	94	69
Net income available for The Dow Chemical Company common stockholder	$ 4,582	$ 6,311	$ 1,225
Earnings per common share - basic	$ 6.32	$ 8.44	$ 1.64
Earnings per common share - diluted	$ 6.28	$ 8.38	$ 1.64
Weighted-average common shares outstanding - basic	721.0	743.6	740.5
Weighted-average common shares outstanding - diluted	725.6	749.0	742.3