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			53
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			119			34
Stockholders' Equity, Other				(10)
Net Income (Loss) Available to Common Stockholders, Basic	$ (18)			(11)
Dividends, Common Stock				(1,552)
Other Comprehensive Income (Loss), Net of Tax	$ 305				305
Treasury Stock, Value, Acquired, Cost Method							(125)
Common Stock, Dividends, Per Share, Declared	$ 2.10
Total equity		8	7,431	16,017	(10,225)	(69)	(625)
Stock Issued During Period, Value, New Issues and Treasury Stock Reissued			23
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			43			12
Stockholders' Equity, Other				(2)
Net Income (Loss) Available to Common Stockholders, Basic	$ (28)			(25)
Dividends, Common Stock				(518)
Other Comprehensive Income (Loss), Net of Tax	$ 284				284
Treasury Stock, Value, Acquired, Cost Method							0
Common Stock, Dividends, Per Share, Declared	$ 0.70
Dow Inc.’s stockholders’ equity	$ 12,354
Noncontrolling interests	578
Total equity	12,932	8	7,497	15,472	(9,941)	(57)	(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			211
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			182			25
Stockholders' Equity, Other				(18)
Net Income (Loss) Available to Common Stockholders, Basic	4,552			4,575
Dividends, Common Stock				(1,561)
Other Comprehensive Income (Loss), Net of Tax	$ 1,190				1,190
Treasury Stock, Value, Acquired, Cost Method							(600)
Common Stock, Dividends, Per Share, Declared	$ 2.10
Total equity		8	7,898	18,200	(9,676)	(32)	(825)
Stock Issued During Period, Value, New Issues and Treasury Stock Reissued			11
APIC, Share-based Payment Arrangement, Increase for Cost Recognition			79			8
Stockholders' Equity, Other				(8)
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,675			1,683
Dividends, Common Stock				(518)
Other Comprehensive Income (Loss), Net of Tax	$ 11				11
Treasury Stock, Value, Acquired, Cost Method							(400)
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)