Dow Inc. Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 4,640	$ 6,405	$ 1,294
Other comprehensive income (loss), net of tax
Unrealized gains (losses) on investments	(312)	(45)	40
Cumulative translation adjustments	(579)	(425)	205
Pension and other postretirement benefit plans	2,457	2,225	(778)
Derivative instruments	272	123	(76)
Total other comprehensive income (loss)	1,838	1,878	(609)
Comprehensive income	6,478	8,283	685
Comprehensive income attributable to noncontrolling interests, net of tax	58	94	69
Comprehensive income attributable to Dow Inc.	$ 6,420	$ 8,189	$ 616