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

Related Party Transactions - LNG Terminal Capacity Agreements (Details) MMBTU in Millions	1 Months Ended	9 Months Ended
	May 31, 2019 USD ($) MMBTU Cargo	Sep. 30, 2019 USD ($) bcf / d	Dec. 31, 2018 USD ($)
Related Party Transaction [Line Items]
Accounts receivable—affiliate		$ 67,000,000	$ 114,000,000
Terminal Use Agreement [Member] \| SPLNG [Member] \| SPL [Member]
Related Party Transaction [Line Items]
Regasification Capacity \| bcf / d		2.0
Related Party Transaction, Committed Annual Fee		$ 250,000,000
LNG Sale and Purchase Agreement [Member] \| Cheniere Marketing [Member] \| SPL [Member]
Related Party Transaction [Line Items]
LNG Volume, Purchase Price Percentage of Henry Hub		115.00%
LNG Volume, Purchase Price Per MMBtu		$ 3.00
Letter Agreement [Member] \| Cheniere Marketing [Member] \| SPL [Member]
Related Party Transaction [Line Items]
Contract Volumes \| MMBTU	70
LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
LNG Volume, Purchase Price Per MMBtu	$ 2.00
Letter Agreement [Member] \| Cheniere Marketing [Member] \| SPL [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Contract Cargoes \| Cargo	20