Consolidated Statements of Equity (USD $) In Millions, unless otherwise specified	Total	Union Carbide Corporation's Stockholder's Equity [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss), Net of Tax [Member]	Noncontrolling Interest [Member]
Union Carbide Corporation's stockholder's equity at Dec. 31, 2012			$ 0	$ 312	$ 4,355	$ (1,345)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	132				132
Dividends declared					(169)
Other comprehensive income	29					29
Union Carbide Corporation's stockholder's equity at Jun. 30, 2013		3,314	0	312	4,318	(1,316)
Total Equity at Jun. 30, 2013	3,316
Noncontrolling interests at Jun. 30, 2013							2
Union Carbide Corporation's stockholder's equity at Dec. 31, 2013	3,709		0	312	4,442	(1,045)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	242				242
Dividends declared					(655)
Other comprehensive income	19					19
Union Carbide Corporation's stockholder's equity at Jun. 30, 2014	3,315	3,315	0	312	4,029	(1,026)
Total Equity at Jun. 30, 2014	3,315
Noncontrolling interests at Jun. 30, 2014	$ 0						$ 0