Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net income	$ 258	$ 601
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	(100)	67
Cumulative translation adjustments	(163)	(31)
Pension and other postretirement benefit plans	142	141
Derivative instruments	(162)	(75)
Total other comprehensive income (loss)	(283)	102
Comprehensive income (loss)	(25)	703
Comprehensive income attributable to noncontrolling interests, net of tax	19	51
Comprehensive income (loss) attributable to The Dow Chemical Company	(44)	652
The Dow Chemical Company [Domain]
Net income	258	601
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	(100)	67
Cumulative translation adjustments	(163)	(31)
Pension and other postretirement benefit plans	142	141
Derivative instruments	(162)	(75)
Total other comprehensive income (loss)	(283)	102
Comprehensive income (loss)	(25)	703
Comprehensive income attributable to noncontrolling interests, net of tax	19	51
Comprehensive income (loss) attributable to The Dow Chemical Company	$ (44)	$ 652