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Acquisitions - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified | 6 Months Ended |  |  | 1 Months Ended |  |  | 1 Months Ended |  |  | 0 Months Ended | 1 Months Ended |  |  | 1 Months Ended |  | 1 Months Ended |  | 1 Months Ended | 0 Months Ended | 1 Months Ended | 6 Months Ended |  | 0 Months Ended |  | 0 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012 | Jan. 31, 2012 | Feb. 28, 2012 Teekay LNG-Marubeni Joint Venture [Member] | Jun. 30, 2013 Teekay LNG-Marubeni Joint Venture [Member] | Dec. 31, 2012 Teekay LNG-Marubeni Joint Venture [Member] | Feb. 28, 2012 Teekay LNG-Marubeni Joint Venture [Member] Minimum [Member] | Feb. 28, 2012 Teekay LNG-Marubeni Joint Venture [Member] Maximum [Member] | Feb. 28, 2012 Teekay LNG-Marubeni Joint Venture [Member] Secured Debt [Member] | Feb. 28, 2012 Teekay LNG-Marubeni Joint Venture [Member] Shareholders' Equity [Member] | Jul. 31, 2013 Subsequent Event [Member] Vessel | Jun. 30, 2013 Subsequent Event [Member] Teekay LNG-Marubeni Joint Venture [Member] | Nov. 01, 2012 Exmar LPG BVBA [Member] Vessel | Feb. 28, 2013 Exmar LPG BVBA [Member] | Jun. 30, 2013 Exmar LPG BVBA [Member] | Nov. 01, 2012 Exmar LPG BVBA [Member] Vessel | Nov. 01, 2012 Exmar LPG BVBA [Member] 2014 and 2016 [Member] Vessel | Nov. 01, 2012 Exmar LPG BVBA [Member] July 2013 [Member] Vessel | Feb. 28, 2012 Teekay LNG [Member] Vessel | Jun. 30, 2013 Teekay LNG [Member] | Feb. 28, 2012 Teekay LNG [Member] Teekay LNG-Marubeni Joint Venture [Member] | Feb. 28, 2012 Teekay LNG [Member] Teekay LNG-Marubeni Joint Venture [Member] Secured Debt [Member] | Feb. 28, 2012 Teekay LNG [Member] Teekay LNG-Marubeni Joint Venture [Member] Shareholders' Equity [Member] | Jun. 30, 2013 Voyageur Spirit [Member] | Apr. 13, 2013 Voyageur Spirit [Member] | May 02, 2013 Voyageur Spirit [Member] | Jun. 30, 2013 Voyageur Spirit [Member] | May 02, 2013 Voyageur Spirit [Member] | Nov. 30, 2011 Voyageur Spirit [Member] Minimum [Member] | Jun. 30, 2013 Voyageur Spirit [Member] Maximum [Member] | Nov. 30, 2011 Voyageur Spirit [Member] Maximum [Member] | Nov. 30, 2011 Voyageur Spirit [Member] Capital Addition Purchase Commitments [Member]
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition cost |  |  |  |  | $ 1,300,000,000 |  |  |  |  | $ 1,060,000,000 | $ 266,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 94,000,000
Assumed debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 230,000,000 |  |  | 230,000,000 |  |  |  |  | 230,000,000
Outstanding balance of credit facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 220,500,000
Purchase price of acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 140,000,000 |  | 150,000,000 |
Charter contract term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |
Acquisition completed date |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | May 02, 2013 |  |  |  |
Excess price paid for the carrying value of non-controlling interest acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,400,000 |  |  |  |
Business acquisition initial purchase price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 540,000,000 | 527,300,000 |  |  |  |  |
Charter rate being foregone during period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,000,000 |  |  |  |  |  |  |  |
Indemnification of revenue loss |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 54,000,000 |  |
Adjusted purchase price including assumed debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 297,300,000 |  |  | 297,300,000 |  |  |  |  |
Carrying value in excess of fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,300,000 |  |  |  |  |  |
Common units issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.4 |  |  |  |  |  |
Number of LPG carriers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 19 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of new building carriers |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  | 8 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of chartered-in LPG carriers |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership in LNG carriers |  |  |  | 50.00% | 100.00% |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  | 52.00% |  |  |  |  |  |  |  |  |  |  |  |
Investments in joint venture | 136,413,000 | 161,209,000 |  |  |  |  |  |  |  |  |  |  |  |  | 133,100,000 |  |  |  |  |  |  | 5,800,000 |  | 138,200,000 |  |  |  |  |  |  |  |  |
Pro rata share of existing debt and lease obligations |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 108,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Excess investment over the book value of net assets acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,000,000 |  |  |  |  |  |  | 303,000,000 |  |  |  |  |  |  |  |  |  |  |
Number of vessels |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |  |  |  |  |  |  |  |  |  |
Co-venturer interest in joint venture |  |  |  |  |  | 48.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of secured debt guaranteed by the Partnership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 52.00% |  |  |  |  |  |  |  |  |  |
Restricted cash deposits relating to certain term loans | 37,357,000 |  | 39,390,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |
Guarantee liability |  |  |  |  | 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carrying value of the guarantee liability |  |  |  |  |  | 200,000 | 600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | $ 5,743,109,000 |  | $ 5,559,714,000 |  |  |  |  |  |  |  |  |  | $ 963,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt facilities maturing year |  |  |  |  |  |  |  | 2017 | 2030 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant