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Total Capital and Net Income Per Unit - Issuance of Common Units (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 1 Months Ended 12 Months Ended
Sep. 30, 2012
Nov. 30, 2011
Apr. 30, 2011
Nov. 30, 2010
Jul. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Capital Unit [Line Items]                
Number of Common Stock Units Issued, Private placement         1,713,502      
Number of Common Stock Units Issued, Acquisitions       1,052,749        
Number of Common Stock Units Issued,Sold in public 4,825,863 5,500,000 4,251,800          
Gross Proceeds, Private placement         $ 51,000      
Gross Proceeds, Acquisitions       38,070       38,324
Gross Proceeds, Sold in public 189,243 187,449 168,684          
Net Proceeds, Common limited partners         50,921     50,921
Net Proceeds, Acquisitions       38,070       38,324
Net Proceeds, Sold in public $ 182,316 $ 179,523 $ 161,655     $ 182,316 $ 341,178  
Offering Price 38.43 33.40 38.88 35.44 29.18      
Teekay Corporation's Ownership After the Offering 37.45% 40.09% 43.62% 46.83% 47.70%      
Use of Proceeds Prepayment of revolving credit facilities Prepayment of revolving credit facilities Prepayment of revolving credit facilities Acquisition of Excelsior and Excalibur Joint Ventures Prepayment of revolving credit facilities and general corporate purposes