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Supplemental Cash Flows Information
9 Months Ended
Sep. 30, 2012
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flows Information Text Block

13. Supplemental Cash Flows Information:

 

          Three Months Ended September 30, Nine Months Ended September 30,
          2012 2011 2012 2011
           (In millions)
                     
Non-cash items excluded from the statement of cash flows:            
 Increase in accrued capital expenditures $ (35) $(38) $ (101) $(48)
 Increase in asset retirement costs   (9)  (2)   (14)  (10)