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	$ 7,595	$ 16,361	$ (10,855)	$ (49)	$ (625)
Stock Issued During Period, Value, Common Stock			200
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			103			17
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			0
Net Income (Loss) Available to Common Stockholders, Basic	$ 2,877			2,892
Dividends, Common Stock				(1,043)
Stockholders' Equity, Other				(10)
Other Comprehensive Income (Loss), Net of Tax	$ 1,179				1,179
Treasury Stock, Value, Acquired, Cost Method							(200)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							0
Common Stock, Dividends, Per Share, Declared	$ 1.40
Total equity		8	7,743	16,829	(9,913)	(39)	(625)
Stock Issued During Period, Value, Common Stock			73
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			82			7
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			0
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,891			1,901
Dividends, Common Stock				(522)
Stockholders' Equity, Other				(8)
Other Comprehensive Income (Loss), Net of Tax	$ 237				237
Treasury Stock, Value, Acquired, Cost Method							(200)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							0
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)
Dow Inc.’s stockholders’ equity	18,165
Noncontrolling interests	574
Total equity	18,739	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)