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

Related Party Transactions - LNG Terminal Capacity Agreements (Details)

Related Party Transactions - LNG Terminal Capacity Agreements (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) MMBTU Cargo	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Accounts receivable—affiliate	$ 184,000,000	$ 105,000,000
LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
SPL [Member] \| Affiliated Entity [Member] \| Facility Swap Agreement [Member]
Related Party Transaction [Line Items]
LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
SPL [Member] \| Cheniere Marketing [Member] \| Cheniere Marketing SPA [Member]
Related Party Transaction [Line Items]
LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
LNG Volume, Purchase Price Per MMBtu	$ 3.00
SPL [Member] \| Cheniere Marketing [Member] \| 2021 Letter Agreement [Member]
Related Party Transaction [Line Items]
LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
LNG Volume, Purchase Price Per MMBtu	$ 0.728
SPL [Member] \| Cheniere Marketing [Member] \| 2021 Letter Agreement [Member] \| Maximum [Member]
Related Party Transaction [Line Items]
Contract Cargoes \| Cargo	30
SPL [Member] \| Cheniere Marketing [Member] \| 2020 Letter Agreement
Related Party Transaction [Line Items]
LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
LNG Volume, Purchase Price Per MMBtu	$ 1.67
SPL [Member] \| Cheniere Marketing [Member] \| 2020 Letter Agreement \| Maximum [Member]
Related Party Transaction [Line Items]
Contract Cargoes \| Cargo	43
SPL [Member] \| Cheniere Marketing [Member] \| 2019 Letter Agreement
Related Party Transaction [Line Items]
LNG Volume, Purchase Price Percentage of Henry Hub	115.00%
LNG Volume, Purchase Price Per MMBtu	$ 2.00
SPL [Member] \| Cheniere Marketing [Member] \| 2019 Letter Agreement \| Maximum [Member]
Related Party Transaction [Line Items]
Contract Cargoes \| Cargo	20
Contract Volumes \| MMBTU	70,000,000