Dow Consolidated Statements of Income Statement - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Net sales	$ 14,115	$ 14,837	$ 45,043	$ 40,604
Cost of sales	12,381	11,611	37,682	32,413
Research and development expenses	191	210	626	632
Selling, general and administrative expenses	356	403	1,289	1,209
Amortization of intangibles	83	100	256	301
Restructuring and asset related charges - net	0	0	186	22
Equity in earnings (losses) of nonconsolidated affiliates	(58)	249	311	751
Sundry income (expense) - net	69	(350)	292	(225)
Interest income	41	14	105	35
Interest expense and amortization of debt discount	155	178	487	561
Income before income taxes	1,001	2,248	5,225	6,027
Provision for income taxes	241	542	1,232	1,383
Net income	760	1,706	3,993	4,644
Net income attributable to noncontrolling interests	21	23	24	69
Net income available for The Dow Chemical Company common stockholder	$ 739	$ 1,683	$ 3,969	$ 4,575
Earnings per common share - basic	$ 1.03	$ 2.25	$ 5.45	$ 6.11
Earnings per common share - diluted	$ 1.02	$ 2.23	$ 5.41	$ 6.06
Weighted-average common shares outstanding - basic	714.3	744.5	724.9	745.4
Weighted-average common shares outstanding - diluted	718.1	750.0	729.8	750.9