Consolidated Statements of Comprehensive Loss - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income (loss)	$ (1,272)	$ 4,775	$ 595
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	115	(67)	(46)
Cumulative translation adjustments	(32)	(225)	900
Pension and other postretirement benefit plans	(899)	(40)	391
Derivative instruments	(338)	75	(14)
Total other comprehensive income (loss)	(1,154)	(257)	1,231
Comprehensive income (loss)	(2,426)	4,518	1,826
Comprehensive income attributable to noncontrolling interests, net of tax	99	97	172
Comprehensive income (loss) attributable to The Dow Chemical Company	(2,525)	4,421	1,654
The Dow Chemical Company
Net income (loss)	(1,150)	4,775	595
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	115	(67)	(46)
Cumulative translation adjustments	(32)	(225)	900
Pension and other postretirement benefit plans	(899)	(40)	391
Derivative instruments	(338)	75	(14)
Total other comprehensive income (loss)	(1,154)	(257)	1,231
Comprehensive income (loss)	(2,304)	4,518	1,826
Comprehensive income attributable to noncontrolling interests, net of tax	99	97	172
Comprehensive income (loss) attributable to The Dow Chemical Company	$ (2,403)	$ 4,421	$ 1,654

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