Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net income (loss)	$ 1,932	$ (217)	$ 2,938	$ 41
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	17	76	(32)	(24)
Cumulative translation adjustments	65	63	(188)	(100)
Pension and other postretirement benefit plans	149	141	1,283	283
Derivative instruments	6	24	116	(138)
Total other comprehensive income	237	304	1,179	21
Comprehensive income	2,169	87	4,117	62
Comprehensive income attributable to noncontrolling interests, net of tax	31	8	46	27
Comprehensive income attributable to The Dow Chemical Company	2,138	79	4,071	35
The Dow Chemical Company
Net income (loss)	1,945	(217)	2,943	41
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	17	76	(32)	(24)
Cumulative translation adjustments	65	63	(188)	(100)
Pension and other postretirement benefit plans	149	141	1,283	283
Derivative instruments	6	24	116	(138)
Total other comprehensive income	237	304	1,179	21
Comprehensive income	2,182	87	4,122	62
Comprehensive income attributable to noncontrolling interests, net of tax	31	8	46	27
Comprehensive income attributable to The Dow Chemical Company	$ 2,151	$ 79	$ 4,076	$ 35