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			211
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			182			25
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			0
Net Income (Loss) Available to Common Stockholders, Basic	$ 4,552			4,575
Dividends, Common Stock				(1,561)
Stockholders' Equity, Other				(18)
Other Comprehensive Income (Loss), Net of Tax	$ 1,190				1,190
Treasury Stock, Value, Acquired, Cost Method							(600)
Stock Issued During Period, Value Treasury Stock Reissued - compensation and benefit plans							0
Common Stock, Dividends, Per Share, Declared	$ 2.10
Total equity		8	7,898	18,200	(9,676)	(32)	(825)
Stock Issued During Period, Value, Common Stock			11
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			79			8
APIC, Stock Issued During Period, Value, Treasury Reissued - compensation and benefit plans			0
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,675			1,683
Dividends, Common Stock				(518)
Stockholders' Equity, Other				(8)
Other Comprehensive Income (Loss), Net of Tax	$ 11				11
Treasury Stock, Value, Acquired, Cost Method							(400)
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	$ 16,439
Noncontrolling interests	589
Total equity	17,028	8	7,988	19,357	(9,665)	(24)	(1,225)
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			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)