Dow Consolidated Statements of Income Statement - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 10,730	$ 14,115	$ 34,001	$ 45,043
Cost of sales	9,592	12,381	30,096	37,682
Research and development expenses	197	191	616	626
Selling, general and administrative expenses	380	356	1,216	1,289
Amortization of intangibles	81	83	243	256
Restructuring and asset related charges - net	0	0	549	186
Equity in earnings (losses) of nonconsolidated affiliates	(7)	(58)	(112)	311
Sundry income (expense) - net	92	69	202	292
Interest income	44	41	186	105
Interest expense and amortization of debt discount	192	155	549	487
Income before income taxes	417	1,001	1,008	5,225
Provision for income taxes	90	241	253	1,232
Net income	327	760	755	3,993
Net income attributable to noncontrolling interests	25	21	61	24
Net income available for The Dow Chemical Company common stockholder	$ 302	$ 739	$ 694	$ 3,969
Earnings per common share - basic	$ 0.43	$ 1.03	$ 0.97	$ 5.45
Earnings per common share - diluted	$ 0.42	$ 1.02	$ 0.97	$ 5.41
Weighted-average common shares outstanding - basic	704.0	714.3	706.4	724.9
Weighted-average common shares outstanding - diluted	707.5	718.1	709.7	729.8