Commitments and Contingencies (Polyester Staple Antitrust Litigation Narrative) (Details)	Mar. 31, 2013 Domination Agreement and Squeeze-Out [Member]	Feb. 28, 2013 Polyester Staple Antitrust Litigation [Member]	Dec. 31, 2008 Polyester Staple Antitrust Litigation [Member]	Sep. 30, 2006 Polyester Staple Antitrust Litigation [Member]
Loss Contingencies [Line Items]
Number of legal actions	2			2
Number of tolling arrangements			4
Number of legal actions participants			1
Number of tolling arrangement participants making demand but no claim		1