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

Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Loss Contingencies [Line Items]
Restricted net assets of consolidated subsidiaries	$ 972.4
Bechtel EPC Contract - Train One And Two [Member]
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Royalty Guarantees, Amount	3,900.0
Bechtel EPC Contract - Train Three And Four [Member]
Loss Contingencies [Line Items]
Long-term Purchase Commitment, Amount	3,769
Lump sum payment, termination prior to issuance of notice to proceed	5.0
Minimum [Member] \| Bechtel EPC Contract - Train Three And Four [Member]
Loss Contingencies [Line Items]
Lump sum payment, termination prior to issuance of notice to proceed	1.0
Minimum [Member] \| Royalty Agreements [Member]
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Royalty Guarantees, Amount	2.0
Maximum [Member] \| Bechtel EPC Contract - Train One And Two [Member]
Loss Contingencies [Line Items]
Lump sum payment, termination prior to issuance of notice to proceed	30.0
Maximum [Member] \| Bechtel EPC Contract - Train Three And Four [Member]
Loss Contingencies [Line Items]
Lump sum payment, termination after issuance of notice to proceed	30.0
Lump sum payment, termination prior to issuance of notice to proceed	2.5
Maximum [Member] \| Royalty Agreements [Member]
Loss Contingencies [Line Items]
Oil and Gas Delivery Commitments and Contracts, Royalty Guarantees, Amount	$ 11.0