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Supplemental Cash Flow Information (Tables)
 3 Months Ended
Mar. 31, 2014
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.
 
 
Three Months Ended
March 31,
 
2014
 
2013
(Increase) decrease in:
 
 
 
Accounts receivable
$
60,046

 
$
(85,915
)
Inventories
(11,700
)
 
7,947

Other current assets
41,623

 
4,736

Increase (decrease) in:
 
 
 
Accounts payable
(1,867
)
 
57,048

Accrued liabilities
(35,184
)
 
6,019

Net changes in components of operating assets and liabilities
$
52,918

 
$
(10,165
)