Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Net income attributable to Union Carbide Corporation	$ 110	$ 306	$ 355	$ 471
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax	0	1	0	1
Pension and other postretirement benefit plans	14	17	29	33
Other Comprehensive Income (Loss), Net of Tax	14	18	29	34
Comprehensive income attributable to Union Carbide Corporation	$ 124	$ 324	$ 384	$ 505