| Variable Interest Entity (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 1 Months Ended | 1 Months Ended | 8 Months Ended | 1 Months Ended | 8 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep. 30, 2011
 common units [Member] | Sep. 30, 2012
 common units [Member]
 Chenier Energy Partners, LP [Member] | Mar. 31, 2013
 common units [Member]
 Sabine Pass LNG terminal [Member]
 Chenier Energy Partners, LP [Member] | May 31, 2012
 Class B Unit [Member]
 Chenier Energy Partners, LP [Member] | Dec. 31, 2012
 Class B Unit [Member]
 Chenier Energy Partners, LP [Member] | Mar. 31, 2013
 Class B Unit [Member]
 Sabine Pass LNG terminal [Member]
 Chenier Energy Partners, LP [Member] | Mar. 31, 2013
 Subordinated Units [Member]
 Sabine Pass LNG terminal [Member]
 Chenier Energy Partners, LP [Member] | Mar. 31, 2013
 General Partner [Member]
 Sabine Pass LNG terminal [Member] | Mar. 31, 2013
 Minimum [Member]
 Chenier Energy Partners, LP [Member] | Aug. 31, 2012
 Blackstone CQP Holdco LP [Member]
 Class B Unit [Member]
 Chenier Energy Partners, LP [Member] | Dec. 31, 2012
 Blackstone CQP Holdco LP [Member]
 Class B Unit [Member]
 Chenier Energy Partners, LP [Member] | |
| Variable Interest Entity [Line Items] | |||||||||||
| Ownership Interest | 0.00% | 0.00% | |||||||||
| Common units held | 12.0 | 33.3 | 135.4 | 50.0 | |||||||
| Price per Common Unit | $ 15.25 | $ 25.07 | $ 15.00 | ||||||||
| Common units sold in private placement | 100.0 | 33.3 | 100.0 | ||||||||