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Related Party Transactions - Successful Acquisition of 50% Interest in Exmar - Additional Information (Detail) - USD ($)
$ in Millions
1 Months Ended
Mar. 31, 2013
Feb. 28, 2013
Dec. 31, 2015
Jun. 30, 2015
Nov. 01, 2012
Related Party Transaction [Line Items]          
Equity method investment ownership percentage     100.00%    
Exmar LPG Joint Venture [Member]          
Related Party Transaction [Line Items]          
Equity method investment ownership percentage   50.00% 50.00% 50.00% 50.00%
Teekay Corporation [Member] | Exmar LPG Joint Venture [Member]          
Related Party Transaction [Line Items]          
One-time fee to Teekay Corporation for its support in Partnership's successful acquisition $ 2.7 $ 2.7      
Equity method investment ownership percentage 50.00%