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Related Party Transactions - Additional Information (Detail) (USD $) | 12 Months Ended |  | 12 Months Ended | 0 Months Ended | 1 Months Ended | 12 Months Ended |  | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Oct. 27, 2011 Vessel | Dec. 31, 2012 Affiliated Entity [Member] | Dec. 31, 2011 Affiliated Entity [Member] | Dec. 31, 2010 Affiliated Entity [Member] | Jun. 15, 2011 Skaugen Multigas Subsidiary [Member] Vessel | Jul. 31, 2008 Skaugen Multigas Subsidiary [Member] m3 Vessel | Dec. 31, 2012 Skaugen Multigas Subsidiary [Member] | Dec. 31, 2011 Skaugen Multigas Subsidiary [Member] Teekay Corporation [Member] | Dec. 31, 2012 Toledo Spirit [Member] | Dec. 31, 2011 Toledo Spirit [Member] | Dec. 31, 2010 Toledo Spirit [Member] | Dec. 31, 2010 LPG Carriers [Member] Interest rate swap agreements [Member] | Dec. 31, 2008 Kenai LNG [ Member] Carriers | Dec. 31, 2011 Three Angola Carriers [Member] | Jan. 31, 2012 Fourth Angola Carrier [Member] | Feb. 28, 2012 Marubeni Corporation [Member] Carriers | Dec. 31, 2012 Angola LNG Carrier [Member] m3 Carriers | Dec. 31, 2007 Angola LNG Carrier [Member] Carriers m3 | Dec. 31, 2007 Angola LNG Carrier [Member] Teekay Corporation [Member] | Mar. 17, 2010 Conventional Tankers [Member] Tanker | Dec. 31, 2010 Conventional Tankers [Member] Vessel | Mar. 17, 2010 Conventional Tankers [Member] Secured Debt [Member] | Mar. 17, 2010 Conventional Tankers [Member] Line of Credit [Member]
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of tankers acquired |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 | 3 |  |
Acquisition cost of vessels and associated fixed-rate contracts |  |  |  |  |  |  |  | $ 114,500,000 |  |  |  |  |  |  |  |  | $ 57,300,000 | $ 19,100,000 |  |  |  |  | $ 160,000,000 |  |  |
Cash financed by partnership for acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |  |  | 24,000,000
Equity distribution to parent in form of excess of purchase price over book value of assets |  |  | 49,376,000 |  |  |  |  | 8,200,000 |  |  |  |  |  |  | 1,500,000 |  | 46,200,000 | 15,900,000 |  |  |  |  | 3,600,000 |  |  |
Debt assumed by acquiring company |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 193,800,000 | 64,800,000 |  |  |  |  |  |  | 126,000,000 |
Working capital acquired in exchange for a short-term vendor loan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15,000,000 |  |  |
General and administrative expenses attributable to the operations of the subsidiaries | 27,149,000 | 24,120,000 | 23,247,000 |  | 19,710,000 | 15,468,000 | 14,919,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 |  |
Interest expenses net | 54,211,000 | 49,880,000 | 49,019,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 |  |
Number of LNG carriers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  | 6 | 4 |  |  |  |  |  |
Crewing and manning costs payables to the subsidiaries of Teekay Corporation |  |  |  |  | 0 | 4,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-interest bearing advances to affiliates | 13,864,000 | 11,922,000 |  |  | 13,864,000 | 11,922,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-interest bearing advances from affiliates | 12,083,000 | 17,400,000 |  |  | 12,083,000 | 17,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining term of the time-charter contract |  |  |  |  |  |  |  |  |  |  |  | 13 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Partnership losses |  |  |  |  |  |  |  |  |  |  |  | 900,000 | (100,000) | (1,900,000) |  |  |  |  |  |  |  |  |  |  |  |
Carriers owned |  |  |  |  |  |  |  | 2 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Carriers volume |  |  |  |  |  |  |  |  | 12,000 |  |  |  |  |  |  |  |  |  |  | 160,400 | 160,400 |  |  |  |  |
Fixed rate time characters service period for project |  |  |  |  |  |  |  | 15 years |  |  |  |  |  |  |  |  |  | 20 years |  |  | 20 years |  |  |  |  |
Acquisition percent of interest In LNG carriers |  |  |  |  |  |  |  | 100.00% |  | 100.00% |  |  |  |  |  |  |  |  | 52.00% |  |  |  |  |  |  |
Notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,000,000 |  |  |  |  |  |  |  |  |  |  |
Percentage interest sold in Skaugen Multigas subsidiaries and Skaugen LPG carriers |  |  |  |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale price of interest sold in Skaugen Multigas subsidiaries and Skaugen LPG carriers |  |  |  |  |  |  |  |  |  |  | 1,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of new chartered carriers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |
Cost to construct carriers |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 906,200,000 | 299,000,000 |  |  |  |
Equity method investment ownership percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33.00% | 33.00% |  | 33.00% |  | 33.00% |  |  |  |
One-time fee to Teekay Corporation for its support in partnership's successful acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,000,000 |  |  |  |  |  |  |

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- Definition The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 22 -Article 12 + Details
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