ACCUMULATED OTHER COMPREHENSIVE (LOSS) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended											6 Months Ended						6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Accumulated Other Comprehensive Income (Loss) [Member]	Dec. 31, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Jun. 30, 2013 Accumulated Other Comprehensive Income (Loss) [Member]	Dec. 31, 2012 Accumulated Other Comprehensive Income (Loss) [Member]	Jun. 30, 2014 Accumulated Translation Adjustment [Member]	Dec. 31, 2013 Accumulated Translation Adjustment [Member]	Jun. 30, 2013 Accumulated Translation Adjustment [Member]	Dec. 31, 2012 Accumulated Translation Adjustment [Member]	Jun. 30, 2014 Accumulated Defined Benefit Plans and Other Post Retirement Adjustment [Member]		Jun. 30, 2013 Accumulated Defined Benefit Plans and Other Post Retirement Adjustment [Member]		Dec. 31, 2013 Accumulated Defined Benefit Plans and Other Post Retirement Adjustment [Member]	Dec. 31, 2012 Accumulated Defined Benefit Plans and Other Post Retirement Adjustment [Member]	Jun. 30, 2014 Impact to Sundry income (expense) [Domain]	Jun. 30, 2013 Impact to Sundry income (expense) [Domain]
Translation adjustments	$ (1)	$ 0	$ (1)	$ 0
Reclassification to earnings - Sundry income (expense) - net																				(1)	0
Adjustments to pension and other postretirement benefit plans	10	15	20	29										20	[1],[2]	29	[1],[2]
Adjustments to pension and other postretirement benefit plans, tax														(12)	[1]	(18)	[1]
Union Carbide Corporation's stockholder's equity	$ 3,315		$ 3,315		$ 3,709	$ (1,026)	$ (1,045)	$ (1,316)	$ (1,345)	$ (79)	$ (78)	$ (56)	$ (56)	$ (947)		$ (1,260)		$ (967)	$ (1,289)

[1] Tax amounts are included in "Provision for income taxes" in the consolidated statements of income.

[2] Included in "Net periodic benefit cost." See Note 8 for additional information.