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Leases and Restricted Cash - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Property Subject to Operating Lease [Member]
   
Capital Lease Obligations [Line Items]    
Minimum scheduled future revenues, 2013 340,300,000  
Minimum scheduled future revenues, 2014 319,000,000  
Minimum scheduled future revenues, 2015 313,100,000  
Minimum scheduled future revenues, 2016 288,900,000  
Minimum scheduled future revenues, 2017 288,000,000  
Security for debt in equity method investment [Member] | Teekay Lng-Marubeni Joint Venture [Member]
   
Capital Lease Obligations [Line Items]    
Restricted cash on deposit 30,000,000  
Number of Carriers 6  
Drydocking and repairs [Member]
   
Capital Lease Obligations [Line Items]    
Restricted cash on deposit 4,100,000 2,600,000
Long-term Debt [Member]
   
Capital Lease Obligations [Line Items]    
Restricted cash on deposit 19,000,000 16,900,000
Teekay Nakilat Corporation [Member]
   
Capital Lease Obligations [Line Items]    
Ownership interest held by partnership 70.00%  
Teekay Tangguh Borrower LLC [Member]
   
Capital Lease Obligations [Line Items]    
Ownership interest held by partnership 99.00%  
Tax indemnification 9.4 9.9
Teekay BLT Corporation [Member]
   
Capital Lease Obligations [Line Items]    
Percentage of ownership interest held by Teekay Tangguh Borrower LLC in Teekay BLT Corporation 70.00%  
Teekay Tangguh Joint Venture [Member]
   
Capital Lease Obligations [Line Items]    
Ownership interest held by partnership 69.00%  
Term of Head Lease and the Sublease 20 year  
Head Lease receipts 149,000,000  
Sublease payments 90,600,000  
Deferred Head Lease receipts 39,100,000  
Tangguh LNG Carrier [Member]
   
Capital Lease Obligations [Line Items]    
Capital lease arrangement period 20-year  
2013 39,100,000  
2014 39,100,000  
2015 39,100,000  
2016 39,100,000  
2017 39,100,000  
RasGas II LNG Carriers [Member]
   
Capital Lease Obligations [Line Items]    
Percentage of partnership's in joint ventures partner's share 30.00%  
Capital lease arrangement period 30-year  
Tax Indemnification 15,500,000  
Tax indemnification end period The tax indemnification is for the duration of the lease contract with the third party plus the years it would take for the lease payments to be statute barred, and ends in 2041  
Weighted average interest rate on lease 5.20%  
Approximate capital leases future minimum payments due 977,100,000  
Interest expenses included in capital lease payment obligation 505,000,000  
Year of commencement of lease payments covering interest and principal portion 2024  
Lease payments to cover interest expense 5 years  
Number of Carriers 3  
Restricted cash on deposit 475,500,000 476,100,000
Weighted-average interest rates earned on deposits 0.40% 0.30%
Suezmax Tankers [Member]
   
Capital Lease Obligations [Line Items]    
Weighted average interest rate on lease 7.40%  
Approximate capital leases future minimum payments due 190,500,000  
Interest expenses included in capital lease payment obligation 25,000,000  
Number of Carriers 5  
Description of capital leases, vessels During 2012, the lessor extended the term of one of the five leases and has forfeited their option to sell all five vessels to the Partnership until 2014.  
Number Of vessel expected to be sold to third party 2