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Right of Use Assets (Tables)
12 Months Ended
Dec. 31, 2022
Disclosure of leases [Abstract]  
Disclosure of quantitative information about right-of-use assets
A reconciliation of the changes in the carrying amount of the right-of-use assets is as follows:
LandBuildingsVehiclesEquipmentPipelineTotal
As at Dec. 31, 2020
58 24 16 42 141 
Additions— — — — 
Acquisitions (Note 4)
13 — — — — 13 
Depreciation(3)(5)— (2)(1)(11)
Disposal of assets— — — — (41)(41)
Transfers— — — (8)— (8)
As at Dec. 31, 202168 20 — 95 
Additions36  1 3  40 
Depreciation(4)(5) (2) (11)
Change in foreign exchange
  rates
2     2 
As at Dec. 31, 2022102 15 2 7  126