Other (Charges) Gains, Net (Schedule of Other (Charges) Gains, Net) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restructuring and Related Activities [Abstract]
Other	$ 3	$ 0	$ 3	$ 0
Employee termination benefits	(1)	(1)	(3)	(3)
Kelsterbach plant relocation	0	(2)	0	(4)
Plant/office closures	0	0	1	0
Total	$ 2	$ (3)	$ 1	$ (7)

The charge against earnings in the period for known and estimated costs of one time termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan.

No definition available.

Name:	ce_OneTimeTerminationBenefits
Namespace Prefix:	ce_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration