Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Net income attributable to Union Carbide Corporation	$ 165	$ 173
Other comprehensive income, net of tax
Cumulative translation adjustments	0	1
Pension and other postretirement benefit plans	16	12
Other comprehensive income	16	13
Comprehensive income attributable to Union Carbide Corporation	$ 181	$ 186

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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