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Supplemental Cash Flow Information (Tables)
 9 Months Ended
Sep. 30, 2017
Supplemental Cash Flow Information [Abstract]  
Supplemental Cash Flow Information [Table Text Block]
Supplemental Cash Flow Information
 
Nine Months Ended September 30,
(In millions)
2017
 
2016
Net cash (used in) operating activities:
 
 
 
Interest paid (net of amounts capitalized)
$
(269
)
 
$
(243
)
Income taxes paid to taxing authorities
(101
)
 
(68
)
Noncash investing activities, related to continuing operations:
 

 
 

Changes in asset retirement costs
$
(94
)
 
$
3

Asset retirement obligations assumed by buyer
14

 
86

Increase in capital expenditure accrual
207

 
—

Notes receivable for disposal of assets
745

 
—