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Supplemental Cash Flow Information (Tables)
 9 Months Ended
Sep. 30, 2015
Supplemental Cash Flow Elements [Abstract]  
Net Changes In Components Of Operating Assets And Liabilities
The following table provides information regarding the net changes in components of operating assets and liabilities.
 
 
Nine Months Ended
September 30,
 
2015
 
2014
(Increase) decrease in:
 
 
 
Accounts receivable
$
72,372

 
$
43,591

Inventories
(1,481
)
 
(14,060
)
Deferred charges
(7,256
)
 
—

Other current assets
(7,014
)
 
48,582

Increase (decrease) in:
 
 
 
Accounts payable
(70,980
)
 
(8,576
)
Accrued liabilities
21,740

 
(30,487
)
Net changes in components of operating assets and liabilities
7,381

 
39,050