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Leases and Restricted Cash - Estimated Future Minimum Rental Payments to be Received and Paid Under the Lease Contracts (Parenthetical) (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Operating Leased Assets [Line Items] |  |
Deferred Head Lease receipts | $ 19,608 | $ 16,565
Teekay Tangguh Joint Venture [Member] |  |
Operating Leased Assets [Line Items] |  |
Head Lease receipts | 228,800 |
Sublease payments | 163,700 |
Deferred Head Lease receipts | 3,800 |
Teekay Tangguh Joint Venture [Member] | Other Noncurrent Liabilities [Member] |  |
Operating Leased Assets [Line Items] |  |
Deferred Head Lease receipts | $ 40,400 |

X
- Definition Amount of head lease payments received from the date of inception. + References No definition available. + Details
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Namespace Prefix: | tgp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Sublease Payments Made + References No definition available. + Details
Name: | tgp_SubleasePaymentsMade
Namespace Prefix: | tgp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A + Details
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Balance Type: | credit
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- Definition This element represents revenue received, but not recognized for financial reporting purposes, which is anticipated to be recognized for financial reporting purposes more than one year from the reporting date or one operating cycle, if longer. Such deferred revenue may consist of and include amounts paid in advance by lessees and purchase price adjustments for leases acquired in a business combination or other transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.26) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |