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Financial Instruments - Summary of Partnership's Loan Receivables and Other Financing Receivables (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Direct financing leases $ 666,658 $ 682,495
Other receivables:    
Total loans receivables and other financing receivables 854,784 894,673
Payment Activity [Member] | Performing [Member]    
Financing Receivable, Recorded Investment [Line Items]    
Direct financing leases 666,658 682,495
Other receivables:    
Long-term receivable and accrued revenue included in accounts receivable and other assets 28,256 30,664
Other Internal Metrics [Member] | Performing [Member]    
Other receivables:    
Advances to equity accounted joint ventures (note 7) $ 159,870 $ 181,514