Commitments and Contingencies (Purchase Obligations Narrative) (Details) (Acetyl Intermediates [Member], USD $) In Millions, unless otherwise specified	1 Months Ended		6 Months Ended
	Apr. 30, 2011	Mar. 31, 2011	Jun. 30, 2011
Acetyl Intermediates [Member]
Recorded Unconditional Purchase Obligation [Line Items]
Commercial dispute resolutions, bankrupt supplier	$ 1	$ 16	$ 17