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Lease Liabilities (Tables)
 9 Months Ended
Sep. 30, 2020
Lease liabilities [abstract]  
Detailed Information About In Lease Liabilities Included In Consolidated Balancesheet
Total lease liabilities included in the Consolidated Balance Sheets are as follows:
 
   
Nine months ended
September 30, 2020
   Year ended
December 31, 2019		 
Balance, beginning of period
  
$
114
 
  $136 
Additions (terminations)
  
 
(97
) 
   1 
Unwinding of discount on lease liabilities
  
 
1
 
   7 
Lease payments
  
 
(5
) 
   (30) 
  
 
 
   
 
 
 
Balance, end of period
  
$
13
 
  $114 
  
 
 
   
 
 
 
Current portion
  
$
5
 
  $29 
Long-term portion
  
$
8
 
  $85 
  
 
 
   
 
 
 
Detailed information About In Maturity Lease Payments
The following table sets out a maturity analysis of lease payments, disclosing the undiscounted balance after September 30, 2020:
 
   
2020
   2021   2022   2023   2024   Thereafter   Total 
Transportation
  
$
1
 
  $3   $2   $—     $—     $—     $6 
Vehicle
  
 
—  
 
   2    1    1    —      —      4 
Surface
  
 
—  
 
   —      —      —      —      6    6 
  
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
   
 
 
 
Total
  
$
1
 
  $5   $3   $1   $—     $6   $16