Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement of Comprehensive Income [Abstract]
Net Income Attributable to Union Carbide Corporation	$ 167	$ 80	$ 242	$ 132
Other Comprehensive Income, Net of Tax [Abstract]
Translation adjustments	(1)	0	(1)	0
Pension and other postretirement benefit plans adjustments	10	15	20	29
Total other comprehensive income	9	15	19	29
Comprehensive Income Attributable to Union Carbide Corporation	$ 176	$ 95	$ 261	$ 161