Consolidated Statements of 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
Income Statement [Abstract]
Net trade sales	$ 24	$ 52	$ 50	$ 92
Net sales to related companies	1,766	1,670	3,398	3,345
Total Net Sales	1,790	1,722	3,448	3,437
Cost of sales	1,534	1,630	3,059	3,202
Research and development expenses	5	5	11	13
Selling, general and administrative expenses	3	3	5	6
Equity in earnings of nonconsolidated affiliates	4	28	4	60
Sundry income (expense) - net	(3)	(11)	(12)	(27)
Interest income	3	2	6	5
Interest expense and amortization of debt discount	8	8	15	15
Income Before Income Taxes	244	95	356	239
Provision for income taxes	77	15	114	107
Net Income Attributable to Union Carbide Corporation	167	80	242	132
Depreciation	44	50	88	101
Capital Expenditures	$ 39	$ 29	$ 64	$ 47