Dow Consolidated Statements of Income Statement - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Net sales	$ 10,104	$ 10,915	$ 20,535	$ 21,680
Cost of sales	9,521	9,591	19,281	19,079
Research and development expenses	188	196	388	400
Selling, general and administrative expenses	347	390	713	832
Amortization of intangibles	63	77	139	158
Restructuring and asset related charges - net	591	0	799	45
Equity in earnings (losses) of nonconsolidated affiliates	(30)	26	(50)	43
Sundry income (expense) - net	147	76	160	137
Interest income	39	42	67	107
Interest expense and amortization of debt discount	209	197	425	396
Income (loss) before income taxes	(659)	608	(1,033)	1,057
Provision for income taxes	142	150	58	61
Net income (loss)	(801)	458	(1,091)	996
Net income attributable to noncontrolling interests	34	19	51	41
Net income (loss) available for The Dow Chemical Company common stockholder	$ (835)	$ 439	$ (1,142)	$ 955
Earnings (loss) per common share - basic	$ (1.18)	$ 0.62	$ (1.62)	$ 1.35
Earnings (loss) per common share - diluted	$ (1.18)	$ 0.62	$ (1.62)	$ 1.35
Weighted-average common shares outstanding - basic	709.5	703.8	708.2	704.1
Weighted-average common shares outstanding - diluted	709.5	705.3	708.2	705.5