Segment And Geographic Information (Capital Expenditures) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Capital expenditures	$ 679,222	$ 386,882	$ 176,843
Olefins [Member]
Segment Reporting Information [Line Items]
Capital expenditures	145,542	135,886	90,641
Vinyls [Member]
Segment Reporting Information [Line Items]
Capital expenditures	531,939	246,827	84,192
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Capital expenditures	$ 1,741	$ 4,169	$ 2,010