Dow Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	$ (13)	$ 8	$ (45)	$ (16)
Cumulative translation adjustments	(157)	91	(345)	(9)
Pension and other postretirement benefit plans	149	147	1,432	430
Derivative instruments	32	38	148	(100)
Total other comprehensive income	11	284	1,190	305
Comprehensive income	1,717	283	5,834	345
Comprehensive income attributable to noncontrolling interests, net of tax	23	24	69	51
Comprehensive income attributable to The Dow Chemical Company	1,694	259	5,765	294
Net income (loss)	$ 1,706	$ (1)	$ 4,644	$ 40