Segment And Geographic Information (Total Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total assets	$ 4,060,909	$ 3,412,196
Olefins [Member]
Segment Reporting Information [Line Items]
Total assets	1,557,510	1,439,308
Vinyls [Member]
Segment Reporting Information [Line Items]
Total assets	1,740,595	1,030,912
Corporate And Other [Member]
Segment Reporting Information [Line Items]
Total assets	$ 762,804	$ 941,976