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CONSOLIDATED STATEMENTS OF CHANGES IN TOTAL EQUITY (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2010
Offering cost from follow-on public offer	$ 15,000	$ 6,900	$ 100
Percentage Interest on Sale	1.00%

X

- Definition

Percentage of ownership interest sold in subsidiaries.

+ References

No definition available.

+ Details

Name:	tgp_PercentageOfOwnershipInterestSoldInSubsidiaries
Namespace Prefix:	tgp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Costs incurred in connection with the offering and selling of additional partner interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 10

-Section S99

-Paragraph 4

-Subparagraph (SAB TOPIC 5.D.Q1)

-URI http://asc.fasb.org/extlink&oid=6488002&loc=d3e600348-122990



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section D

+ Details

Name:	us-gaap_OfferingCostsPartnershipInterests
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant