Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net income attributable to Union Carbide Corporation	$ 245	$ 165
Other comprehensive income, net of tax
Pension and other postretirement benefit plans	15	16
Other Comprehensive Income (Loss), Net of Tax	15	16
Comprehensive income attributable to Union Carbide Corporation	$ 260	$ 181