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Equity Financing Transactions - Additional Information (Detail) (Teekay Offshore [Member], USD $)
In Millions, unless otherwise specified
1 Months Ended 6 Months Ended
May 02, 2013
Jun. 30, 2013
Dec. 31, 2010
Teekay Offshore [Member]
     
Subsidiary or Equity Method Investee [Line Items]      
Acquisition completion date May 02, 2013    
Total purchase price $ 540.0    
Business acquisition, debt assumed 230.0    
Business acquisition, cash paid 253.0    
Business acquisition, value of common units 44.3    
Business acquisition, Fair value of common units $ 40.0    
Common units outstanding 83.6    
Ownership interest   29.90% 33.00%
Percentage of general partner interest   2.00%