Cheniere Energy Partners, L.P. Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - LNG Terminal Capacity Agreements (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Revenues—affiliate	$ 2,958,000us-gaap_RevenueFromRelatedParties	$ 2,940,000us-gaap_RevenueFromRelatedParties	$ 8,137,000us-gaap_RevenueFromRelatedParties
Sabine Pass Liquefaction [Member] \| Sabine Pass LNG, LP [Member] \| LNG Terminal Capacity Agreements [Member]
Related Party Transaction [Line Items]
Regasification capacity, in Bcf/d	2.0
Related Party Transaction, Committed Annual Fee	250,000,000
Related Party Agreement Term	20 years
Terminal Use Agreement Maintenance Expense	26,100,000	26,600,000	10,100,000
Cheniere Marketing, LLC [Member] \| Cheniere Energy Investments, LLC [Member] \| LNG Terminal Capacity Agreements [Member]
Related Party Transaction [Line Items]
Proceeds (Payments) of Gross Margin Earned, Percentage	80.00%
Revenues—affiliate	$ 0	$ 0	$ 4,900,000
Cheniere Marketing, LLC [Member] \| Sabine Pass Liquefaction [Member] \| LNG Sale and Purchase Agreement [Member]
Related Party Transaction [Line Items]
Incremental LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
Incremental LNG Volume, Purchase Price Per MMBtu	3.00