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Cash Flow Disclosures
6 Months Ended
Jun. 30, 2013
Supplemental Cash Flow Elements [Abstract]  
Cash Flow Disclosures

Note F – Cash Flow Disclosures

Additional disclosures regarding cash flow activities are provided below.

 

     Six Months  
     Ended June 30,  
(Thousands of dollars)    2013     2012  

Net (increase) decrease in operating working capital other than cash and cash equivalents:

    

(Increase) decrease in accounts receivable

   $ (219,802     292,226   

Increase in inventories

     (2,313     (96,612

Increase in prepaid expenses

     (116,276     (118,139

Decrease in deferred income tax assets

     72,652        22,690   

Increase (decrease) in accounts payable and accrued liabilities

     182,903        (248,040

Increase in current income tax liabilities

     147,980        44,530   
  

 

 

   

 

 

 

Total

   $ 65,144        (103,345
  

 

 

   

 

 

 

Supplementary disclosures:

    

Cash income taxes paid

   $ 196,923        326,727   

Interest paid, net of amounts capitalized

     25,010        8,657