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Significant and Subsequent Events (Tables)
12 Months Ended
Dec. 31, 2020
Significant Events [Abstract]  
Details of business combinations
The fair values of the identifiable assets and liabilities of the acquired entity in the business combination as at the date of acquisition were:
As at May 19, 2020Fair value recognized
on acquisition
Assets
Net working capital
Property, plant and equipment
Intangible assets(1)
37 
Risk management liabilities (current and long-term)(5)
Decommissioning provisions(1)
Total identifiable net assets at fair value38 
Cash consideration32 
Working capital consideration6 
Total purchase consideration transferred38 
Asset Acqusition Consequently, the acquisition has been accounted for as an asset acquisition, with the following carrying amounts assigned based on relative fair values:
Working capital11 
Property, plant and equipment308 
Other assets
Other liabilities(2)
Decommissioning and other provisions(19)
Total acquisition cost301