Dow Consolidated Statements of Equity Statement - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Unearned ESOP Shares [Member]	Treasury Stock [Member]
Total equity		$ 8	$ 7,325	$ 17,045	$ (10,246)	$ (91)	$ (500)
Stock Issued During Period, Value, New Issues and Treasury Stock Reissued			30
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			76			22
Stockholders' Equity, Other				(8)
Net Income (Loss) Available to Common Stockholders, Basic	$ 10			14
Dividends, Common Stock				(1,034)
Other Comprehensive Income (Loss), Net of Tax	$ 21				21
Treasury Stock, Value, Acquired, Cost Method							(125)
Common Stock, Dividends, Per Share, Declared	$ 1.40
Total equity		8	7,370	16,763	(10,529)	(81)	(625)
Stock Issued During Period, Value, New Issues and Treasury Stock Reissued			14
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			47			12
Stockholders' Equity, Other				(5)
Net Income (Loss) Available to Common Stockholders, Basic	$ (227)			(225)
Dividends, Common Stock				(516)
Other Comprehensive Income (Loss), Net of Tax	$ 304				304
Treasury Stock, Value, Acquired, Cost Method							0
Common Stock, Dividends, Per Share, Declared	$ 0.70
Dow Inc.’s stockholders’ equity	$ 12,537
Noncontrolling interests	560
Total equity	13,097	8	7,431	16,017	(10,225)	(69)	(625)
Dow Inc.’s stockholders’ equity	12,435
Noncontrolling interests	570
Total equity	13,005	8	7,595	16,361	(10,855)	(49)	(625)
Stock Issued During Period, Value, New Issues and Treasury Stock Reissued			200
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			103			17
Stockholders' Equity, Other				(10)
Net Income (Loss) Available to Common Stockholders, Basic	2,877			2,892
Dividends, Common Stock				(1,043)
Other Comprehensive Income (Loss), Net of Tax	$ 1,179				1,179
Treasury Stock, Value, Acquired, Cost Method							(200)
Common Stock, Dividends, Per Share, Declared	$ 1.40
Total equity		8	7,743	16,829	(9,913)	(39)	(625)
Stock Issued During Period, Value, New Issues and Treasury Stock Reissued			73
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			82			7
Stockholders' Equity, Other				(8)
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,891			1,901
Dividends, Common Stock				(522)
Other Comprehensive Income (Loss), Net of Tax	$ 237				237
Treasury Stock, Value, Acquired, Cost Method							(200)
Common Stock, Dividends, Per Share, Declared	$ 0.70
Dow Inc.’s stockholders’ equity	$ 15,573
Noncontrolling interests	580
Total equity	$ 16,153	$ 8	$ 7,898	$ 18,200	$ (9,676)	$ (32)	$ (825)