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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Environmental Loss Contingencies by Site
The following table summarizes all probable environmental remediation, indemnification and restoration liabilities, including related legal expenses, at September 30, 2018 and December 31, 2017:
 
Liability
 
Range of Reasonably Possible Costs at September 30, 2018
Site Description
September 30, 2018
 
December 31, 2017
 
Low
 
High
Geismar, LA
$
13

 
$
14

 
$
9

 
$
22

Superfund and offsite landfills – allocated share:
 
 
 
 
 
 
 
Less than 1%
2

 
2

 
1

 
5

Equal to or greater than 1%
5

 
6

 
5

 
14

Currently-owned
4

 
4

 
2

 
8

Formerly-owned:
 
 
 
 
 
 
 
Remediation
23

 
26

 
21

 
39

Monitoring only
1

 
—

 
1

 
4

Total
$
48

 
$
52

 
$
39

 
$
92