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Related Party Transactions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Related party transactions excluding expenses allocated to Partnership as part of result of Dropdown Predecessor
Voyage revenues	$ 96,354	$ 92,247	$ 195,570	$ 185,466
Vessel operating expenses	20,104	23,388	40,635	44,195
General and administrative	6,506	6,535	13,622	12,861
Affiliated Entity [Member]
Related party transactions excluding expenses allocated to Partnership as part of result of Dropdown Predecessor
Voyage revenues	9,592	8,441	19,183	17,786
Vessel operating expenses	8,029	8,506	17,011	16,079
General and administrative	$ 4,737	$ 4,492	$ 9,793	$ 8,754

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- Details

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- Definition

Under all types of charters and contracts for the Partnership's vessels, except for bareboat charters, vessel operating expenses, include crewing, repairs and maintenance, insurance, stores, lube oils and communication expenses.

+ References

No definition available.

+ Details

Name:	tgp_VesselOperatingExpenses
Namespace Prefix:	tgp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Definition

Voyage revenues currently include revenues only from time- charters accounted for under operating and direct financing leases. Voyage revenues are affected by hire rates and the number of calendar-ship-days a vessel operates. Voyage revenues are also affected by the mix of business between time and voyage charters. Hire rates for voyage charters are more volatile, as they are typically tied to prevailing market rates at the time of a voyage.

+ References

No definition available.

+ Details

Name:	tgp_VoyageRevenues
Namespace Prefix:	tgp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- Definition

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.4)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

+ Details

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Balance Type:	debit
Period Type:	duration