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	$ 141	$ 3,074	$ (1,551)
Net income attributable to Union Carbide Corporation	$ 475			475
Dividends, Common Stock				(768)
Other Comprehensive Income (Loss), Net of Tax	(57)				57
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		0	141	2,909	(1,513)
Net income attributable to Union Carbide Corporation	119			119
Dividends, Common Stock				(247)
Other Comprehensive Income (Loss), Net of Tax	(19)				19
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,428	0	141	2,781	(1,494)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,344	0	141	2,605	(1,402)
Net income attributable to Union Carbide Corporation	298			298
Dividends, Common Stock				(394)
Other Comprehensive Income (Loss), Net of Tax	(30)				30
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest		0	141	2,567	(1,381)
Net income attributable to Union Carbide Corporation	86			86
Dividends, Common Stock				(144)
Other Comprehensive Income (Loss), Net of Tax	(9)				9
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,278	$ 0	$ 141	$ 2,509	$ (1,372)