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Supplemental Cash Flows Information
 12 Months Ended
Dec. 31, 2016
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flows Information Text Block
Supplemental Cash Flows Information

The following table presents information about supplemental cash flows for each of the years in the three-year period ended December 31: 
 
 
2016
 
2015
 
2014
 
 
(In millions)
Cash Payments:
 
 
 
 
 
 
  Interest payments
 
$
97

 
$
119

 
$
144

Income tax payments
 
17

 
25

 
4

Non-cash investing and financing activities excluded from the statement of cash flows:
 
 
 
 
 
 
(Increase) decrease in receivables for property sales
 
$
6

 
$
6

 
$
(17
)
(Increase) decrease in accrued capital expenditures
 
33

 
225

 
(1
)
(Increase) decrease in asset retirement costs
 
46

 
(4
)
 
(56
)