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			97
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			119			15
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(24)
Net Income (Loss) Available to Common Stockholders, Basic	$ 3,213			3,230
Dividends, Common Stock				(1,018)
Stockholders' Equity, Other				(8)
Other Comprehensive Income (Loss), Net of Tax	$ (227)				(227)
Treasury Stock, Value, Acquired, Cost Method							(1,400)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							24
Common Stock, Dividends, Per Share, Declared	$ 1.40
Total equity		8	8,217	21,672	(8,796)	0	(2,221)
Stock Issued During Period, Value, Common Stock			62
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			84			0
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(20)
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,652			1,661
Dividends, Common Stock				(505)
Stockholders' Equity, Other				(1)
Other Comprehensive Income (Loss), Net of Tax	$ (408)				(408)
Treasury Stock, Value, Acquired, Cost Method							(800)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							20
Common Stock, Dividends, Per Share, Declared	$ 0.70
Dow Inc.’s stockholders’ equity	$ 18,973
Noncontrolling interests	534
Total equity	19,507	8	8,343	22,827	(9,204)	0	(3,001)
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			55
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			140			0
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(74)
Net Income (Loss) Available to Common Stockholders, Basic	386			392
Dividends, Common Stock				(989)
Stockholders' Equity, Other				(13)
Other Comprehensive Income (Loss), Net of Tax	$ 72				72
Treasury Stock, Value, Acquired, Cost Method							(378)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							74
Common Stock, Dividends, Per Share, Declared	$ 1.40
Total equity		8	8,607	22,584	(7,065)	0	(3,953)
Stock Issued During Period, Value, Common Stock			0
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			84			0
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			(30)
Net Income (Loss) Available to Common Stockholders, Basic	$ 482			485
Dividends, Common Stock				(493)
Stockholders' Equity, Other				(6)
Other Comprehensive Income (Loss), Net of Tax	$ (2)				(2)
Treasury Stock, Value, Acquired, Cost Method							(252)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							30
Common Stock, Dividends, Per Share, Declared	$ 0.70
Dow Inc.’s stockholders’ equity	$ 19,997
Noncontrolling interests	512
Total equity	$ 20,509	$ 8	$ 8,661	$ 22,570	$ (7,067)	$ 0	$ (4,175)