Westlake Chemical Partners LP (Reconciliation of Proceeds from IPO) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Aug. 04, 2014 Westlake Chemical Partners LP [Member] IPO [Member] Subsidiaries [Member]	Aug. 04, 2014 Limited Partner [Member] Westlake Chemical Partners LP [Member] IPO [Member] Subsidiaries [Member]	Aug. 04, 2014 Cash Reserve Turnaround [Member] Westlake Chemical OpCo LP [Member] IPO [Member] Subsidiaries [Member]
Total proceeds from the initial public offering				$ 310,500
Less: Offering Costs				24,412
Net proceeds from issuance of Westlake Chemical Partners LP common units	286,088	0		286,088
Less: Cash retained by OpCo					55,419
Net proceeds distributed to the Company from the initial public offering			$ 230,669