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, Common
Total equity		$ 8	$ 8,151	$ 20,623	$ (8,977)	$ (15)	$ (1,625)
Stock Issued During Period, Value, Common Stock			99
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			198			15
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(52)
Net Income (Loss) Available to Common Stockholders, Basic	$ 3,948			3,969
Dividends, Common Stock				(1,511)
Stockholders' Equity, Other				(13)
Other Comprehensive Income (Loss), Net of Tax	$ (605)				(605)
Treasury Stock, Value, Acquired, Cost Method							(2,200)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							52
Common Stock, Dividends, Per Share, Declared	$ 2.10
Total equity		8	8,343	22,827	(9,204)	0	(3,001)
Stock Issued During Period, Value, Common Stock			2
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			79			0
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(28)
Net Income (Loss) Available to Common Stockholders, Basic	$ 735			739
Dividends, Common Stock				(493)
Stockholders' Equity, Other				(5)
Other Comprehensive Income (Loss), Net of Tax	$ (378)				(378)
Treasury Stock, Value, Acquired, Cost Method							(800)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							28
Common Stock, Dividends, Per Share, Declared	$ 0.70
Dow Inc.’s stockholders’ equity	$ 18,117
Noncontrolling interests	512
Total equity	18,629	8	8,396	23,068	(9,582)	0	(3,773)
Dow Inc.’s stockholders’ equity	20,718
Noncontrolling interests	529
Total equity	21,247	8	8,540	23,180	(7,139)	0	(3,871)
Stock Issued During Period, Value, Common Stock			63
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			217			0
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(98)
Net Income (Loss) Available to Common Stockholders, Basic	686			694
Dividends, Common Stock				(1,481)
Stockholders' Equity, Other				(17)
Other Comprehensive Income (Loss), Net of Tax	$ (122)				(122)
Treasury Stock, Value, Acquired, Cost Method							(505)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							98
Common Stock, Dividends, Per Share, Declared	$ 2.10
Total equity		8	8,661	22,570	(7,067)	0	(4,175)
Stock Issued During Period, Value, Common Stock			8
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			77			0
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(24)
Net Income (Loss) Available to Common Stockholders, Basic	$ 300			302
Dividends, Common Stock				(492)
Stockholders' Equity, Other				(4)
Other Comprehensive Income (Loss), Net of Tax	$ (194)				(194)
Treasury Stock, Value, Acquired, Cost Method							(127)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							24
Common Stock, Dividends, Per Share, Declared	$ 0.70
Dow Inc.’s stockholders’ equity	$ 19,567
Noncontrolling interests	513
Total equity	$ 20,080	$ 8	$ 8,722	$ 22,376	$ (7,261)	$ 0	$ (4,278)