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

Related Party Transactions - Schedule of Related Party Transactions (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
LNG revenues—affiliate	$ 662	$ 1,312	$ 1,299
Cost of sales—affiliate	77	7	0
Operating and maintenance expense—affiliate	152	138	117
Operating and maintenance expense—related party	13	0	0
General and administrative expense—affiliate	96	102	73
Other income—affiliate	2	2	0
Cheniere Marketing Agreements [Member]
Related Party Transaction [Line Items]
LNG revenues—affiliate	632	1,309	1,299
Cost of sales—affiliate	61	0	0
Contracts for Sale and Purchase of Natural Gas And LNG [Member]
Related Party Transaction [Line Items]
LNG revenues—affiliate	30	3	0
Cost of sales—affiliate	16	7	0
Service Agreements [Member]
Related Party Transaction [Line Items]
Operating and maintenance expense—affiliate	152	138	117
General and administrative expense—affiliate	96	102	73
Natural Gas Transportation and Storage Agreements [Member]
Related Party Transaction [Line Items]
Operating and maintenance expense—related party	13	0	0
Cooperative Endeavor Agreements [Member]
Related Party Transaction [Line Items]
Other income—affiliate	$ 2	$ 2	$ 0