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	$ 255			255
Dividends, Common Stock				(225)
Other Comprehensive Income (Loss), Net of Tax	(17)				17
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,711	0	141	3,104	(1,534)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,344	0	141	2,605	(1,402)
Net income attributable to Union Carbide Corporation	45			45
Dividends, Common Stock				(135)
Other Comprehensive Income (Loss), Net of Tax	(10)				10
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,264	$ 0	$ 141	$ 2,515	$ (1,392)