Property, Plant and Equipment Schedule of Property, Plant and Equipment (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 5,705,567,000		$ 5,705,567,000		$ 3,282,305,000
LNG terminal costs [Member]
Property, Plant and Equipment [Line Items]
Depreciation	14,400,000	14,500,000	43,000,000	43,000,000
Interest Costs Capitalized	30,200,000	14,000,000	125,000,000
Accumulated depreciation, depletion and amortization	278,071,000		278,071,000		235,275,000
Property, plant and equipment, net	5,697,319,000		5,697,319,000		3,273,516,000
LNG terminal [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,233,748,000		2,233,748,000		2,233,595,000
LNG terminal construction-in-process [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,735,876,000		3,735,876,000		1,269,798,000
LNG site and related costs, net [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,766,000		5,766,000		5,398,000
Fixed assets [Member]
Property, Plant and Equipment [Line Items]
Depreciation	800,000	800,000	2,500,000	3,600,000
Accumulated depreciation, depletion and amortization	31,630,000		31,630,000		29,127,000
Property, plant and equipment, net	8,248,000		8,248,000		8,789,000
Computer and office equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,808,000		7,808,000		7,014,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	4,167,000		4,167,000		4,057,000
Computer Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13,125,000		13,125,000		13,012,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,226,000		7,226,000		6,989,000
Other Fixed Assets [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,552,000		$ 7,552,000		$ 6,844,000