Other (Charges) Gains, Net (Schedule of Other (Charges) Gains, Net) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017		Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Employee termination benefits	$ (2)	$ (3)	$ (4)	[1]	$ (8)
InfraServ ownership change	(4)	0	(4)		0
Asset impairments	0	(1)	0		(1)
Other plant/office closures	3	0	(50)		0
Other (charges) gains, net	$ (3)	$ (4)	(58)		$ (9)
Acetyl Intermediates [Member]
Restructuring Cost and Reserve [Line Items]
Other plant/office closures			(50)
Pension Plan [Member]
Restructuring Cost and Reserve [Line Items]
OneTimeTerminationBenefitsBookedToBenefitObligation			(1)
Contract Termination [Member] | Acetyl Intermediates [Member]
Restructuring Cost and Reserve [Line Items]
Other plant/office closures			(24)
Non-income tax receivable adjustment [Member] | Acetyl Intermediates [Member]
Restructuring Cost and Reserve [Line Items]
Other plant/office closures			$ (18)

[1] Includes $1 million of special termination benefits included in Benefit obligations in the unaudited consolidated balance sheets.