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SEGMENT INFORMATION Part 2 (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Additives And Functional Products [Member] | Coatings and Inks Additives Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	23.00%	23.00%	24.00%
Additives And Functional Products [Member] | Adhesives Resins Product Line Member
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	16.00%	18.00%	21.00%
Additives And Functional Products [Member] | Tire Additives Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	17.00%	17.00%	17.00%
Additives And Functional Products [Member] | Care Chemicals Product LIne [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	17.00%	17.00%	15.00%
Additives And Functional Products [Member] | Specialty Fluids Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	13.00%	13.00%	11.00%
Additives And Functional Products [Member] | Animal Nutrition and Crop Protection [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	14.00%	12.00%	12.00%
Advanced Materials [Member] | Specialty Plastics Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	49.00%	51.00%	50.00%
Advanced Materials [Member] | Advanced Interlayers Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	33.00%	33.00%	34.00%
Advanced Materials [Member] | Performance Films Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	18.00%	16.00%	16.00%
Chemical Intermediates [Member] | Intermediates product line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	60.00%	64.00%	65.00%
Chemical Intermediates [Member] | Plasticizers Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	20.00%	19.00%	20.00%
Chemical Intermediates [Member] | Functional Amines Product Line [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	20.00%	17.00%	15.00%
Fibers [Member] | Acetate Tow Product Line Member
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	69.00%	77.00%	80.00%
Fibers [Member] | Acetyl Chemical Products [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	15.00%	15.00%	13.00%
Fibers [Member] | Acetate Yarn [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	10.00%	8.00%	7.00%
Fibers [Member] | Nonwovens [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	6.00%	0.00%	0.00%
Geographic Concentration Risk [Member] | North America [Member] | Additives And Functional Products [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	36.00%	35.00%	37.00%
Geographic Concentration Risk [Member] | North America [Member] | Advanced Materials [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	35.00%	36.00%	37.00%
Geographic Concentration Risk [Member] | North America [Member] | Chemical Intermediates [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	64.00%	68.00%	69.00%
Geographic Concentration Risk [Member] | North America [Member] | Fibers [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	26.00%	22.00%	21.00%
Geographic Concentration Risk [Member] | Asia Pacific [Member] | Additives And Functional Products [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	24.00%	23.00%	21.00%
Geographic Concentration Risk [Member] | Asia Pacific [Member] | Advanced Materials [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	33.00%	33.00%	32.00%
Geographic Concentration Risk [Member] | Asia Pacific [Member] | Chemical Intermediates [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	15.00%	14.00%	12.00%
Geographic Concentration Risk [Member] | Asia Pacific [Member] | Fibers [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	33.00%	37.00%	44.00%
Geographic Concentration Risk [Member] | EMEA [Member] | Additives And Functional Products [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	34.00%	36.00%	35.00%
Geographic Concentration Risk [Member] | EMEA [Member] | Advanced Materials [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	27.00%	26.00%	26.00%
Geographic Concentration Risk [Member] | EMEA [Member] | Chemical Intermediates [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	15.00%	12.00%	13.00%
Geographic Concentration Risk [Member] | EMEA [Member] | Fibers [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	37.00%	37.00%	29.00%
Geographic Concentration Risk [Member] | Latin America [Member] | Additives And Functional Products [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	6.00%	6.00%	7.00%
Geographic Concentration Risk [Member] | Latin America [Member] | Advanced Materials [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	5.00%	5.00%	5.00%
Geographic Concentration Risk [Member] | Latin America [Member] | Chemical Intermediates [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	6.00%	6.00%	6.00%
Geographic Concentration Risk [Member] | Latin America [Member] | Fibers [Member]
Revenue from External Customer [Line Items]
Sales Revenue product line percentage of total segment revenue	4.00%	4.00%	6.00%

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