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Restructuring (Tables)
 9 Months Ended
Sep. 30, 2017
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs [Table Text Block]
The table below summarizes the changes in the liabilities recorded related to contract termination costs and ARO from December 31, 2016 to September 30, 2017, all of which are included in “Other current liabilities” in the unaudited Condensed Consolidated Balance Sheets.
 
Contract Termination Costs
 
Asset Retirement Obligation
 
Total
Accrued liability at December 31, 2016
$
18

 
$
13

 
$
31

Activity (1)
(15
)
 
(13
)
 
(28
)
Accrued liability at September 30, 2017
$
3

 
$
—

 
$
3


(1)         These amounts include $23 of cash payments during the nine months ended September 30, 2017 and $5 of these amounts are included in “Accounts payable” in the unaudited Condensed Consolidated Balance Sheets as of September 30, 2017.