Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		$ 0	$ 138	$ 3,338	$ (1,561)
Net income attributable to Union Carbide Corporation	$ 477			477
Dividends, Common Stock				(922)
Stockholders' Equity, Other				(1)
Other Comprehensive Income (Loss), Net of Tax	(44)				44
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		0	138	2,882	(1,532)
Net income attributable to Union Carbide Corporation	122			122
Dividends, Common Stock				(112)
Stockholders' Equity, Other				0
Other Comprehensive Income (Loss), Net of Tax	(15)				15
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,513	0	138	2,892	(1,517)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,398	0	141	2,922	(1,665)
Net income attributable to Union Carbide Corporation	273			273
Dividends, Common Stock				(187)
Stockholders' Equity, Other				0
Other Comprehensive Income (Loss), Net of Tax	(62)				62
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		0	141	2,974	(1,623)
Net income attributable to Union Carbide Corporation	59			59
Dividends, Common Stock				(25)
Stockholders' Equity, Other				0
Other Comprehensive Income (Loss), Net of Tax	(20)				20
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,546	$ 0	$ 141	$ 3,008	$ (1,603)