Cheniere Energy, Inc. Annual report pursuant to Section 13 and 15(d)

Customer Concentration - Schedule of Revenue from External Customers by Country (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Revenues from External Customers	$ 2,787	$ 1,460	$ 2,402	$ 2,709	$ 3,007	$ 2,170	$ 2,292	$ 2,261	$ 9,358	$ 9,730	$ 7,987
Geographic Concentration Risk [Member] \| Ireland
Concentration Risk [Line Items]
Revenues from External Customers									1,130	989	1,098
Geographic Concentration Risk [Member] \| Spain
Concentration Risk [Line Items]
Revenues from External Customers									1,034	598	0
Geographic Concentration Risk [Member] \| India
Concentration Risk [Line Items]
Revenues from External Customers									1,021	1,160	1,048
Geographic Concentration Risk [Member] \| South Korea
Concentration Risk [Line Items]
Revenues from External Customers									942	1,207	1,517
Geographic Concentration Risk [Member] \| United States
Concentration Risk [Line Items]
Revenues from External Customers									687	2,807	1,911
Geographic Concentration Risk [Member] \| United Kingdom
Concentration Risk [Line Items]
Revenues from External Customers									678	559	155
Geographic Concentration Risk [Member] \| Singapore
Concentration Risk [Line Items]
Revenues from External Customers									646	533	417
Geographic Concentration Risk [Member] \| Other countries
Concentration Risk [Line Items]
Revenues from External Customers									$ 3,220	$ 1,877	$ 1,841